DTC    P1604    Startability Malfunction

for Preparation Click here

DESCRIPTION

1. *1: CVT
   
2. *2: Manual Transaxle
   

WIRING DIAGRAM

INSPECTION PROCEDURE

HINT:

1. In contrast to normal malfunction diagnosis for components, circuits and systems, DTC P1604 is used to determine the malfunctioning area from the problem symptoms and freeze frame data when the user mentions problems such as starting difficulty.
   As the DTC can be stored as a result of certain user actions, even if the DTC is output, if the customer makes no mention of problems, clear the DTC without performing any troubleshooting and return the vehicle to the customer.
   
2. If any other DTCs are output, perform troubleshooting for those DTCs first.
   
3. When the Data List item "Immobiliser Fuel Cut" is ON, the engine cannot be started.
   
4. Read freeze frame data using the intelligent tester. Freeze frame data records engine conditions when a malfunction occurs. This information can be useful when troubleshooting.
   
5. When confirming the freeze frame data, be sure to check all 5 sets of freeze frame data (Click here).
   
6. When confirming freeze frame data, if there are multiple items related to the cause of the malfunction, perform troubleshooting for all related items.
   
7. Try to start the engine under the conditions recorded in the freeze frame data which were present when the malfunction occurred. Confirm the data at this time and compare it with the freeze frame data.
   
8. If the malfunction does not reoccur, carefully check the vehicle conditions from when the malfunction occurred using freeze frame data.
   
9. When performing inspections, jiggle the relevant wire harness and connectors in an attempt to reproduce malfunctions that do not always occur.
   
10. If the same inspection or replacement procedure appears 2 times when performing an inspection procedure, it is not necessary to repeat the procedure the second time.
    

1. Freeze frame data exists, but the malfunction has not reoccurred and the malfunction conditions are unknown.
   
   

   1. The engine speed recorded in the freeze frame data is 0 rpm (the engine does not crank).
      
      

      HINT:

      One of the following problems may be present: battery depletion, excess engine friction, a starter malfunction or a crankshaft position sensor malfunction.

      1. If the battery voltage is less than 6 V during cranking, there is a high probability that engine friction is abnormal.
         
      2. If the battery voltage drops to 5 V or less when starting the engine, the battery may be malfunctioning.
         
      3. If the battery voltage fluctuates while cranking the engine, it can be concluded that cranking is being performed. When the engine speed is 0 rpm, the crankshaft position sensor and/or an ECM may be malfunctioning.
         

      
      

      
      

   2. All engine speeds recorded in the freeze frame data are between 60 and 250 rpm (the engine cranks but there is no combustion).
      

      HINT:

      If the engine speed is between 60 and 250 rpm (no initial combustion), there may be a wiring problem or a complete failure of an ignition or fuel system part.

      
      
      1. Due to a engine coolant temperature sensor malfunction, the fuel injection volume is extremely high or low and the engine may not be able to be started.
         
         
         
         
         
         

   3. The engine speed recorded in the freeze frame data is 250 rpm or higher (the initial combustion and starter turnoff occur late).
      

      HINT:

      If the engine speed is 250 rpm or higher (combustion occurs but the initial combustion and starter turnoff timing is too late), the fuel injection volume is often incorrect (too low or too high) and determining the cause of the malfunction is often difficult.

      1. Due to an engine coolant temperature sensor malfunction, the fuel injection volume is extremely high or low and engine starting trouble may occur.
         
      2. If Long FT is incorrect, there may be a fuel supply problem due to the injectors or fuel pump being clogged, etc.
         
      
      
      3. If the engine cranking speed is high, compression loss may have occurred due to carbon interfering with the valve operation.
         
         
         
         
         
         

2. When the malfunction (starting difficulty) can be reproduced, or malfunction conditions are known, perform the following inspections ("Problem symptoms" and "Systems to inspect").
   
   

   1. Problem symptoms
      

      1. The engine does not crank
         

         HINT:

         The starter is normal if a noise that indicates the starter pinion gear is extending is heard. The battery may be fully depleted or there may be excess engine friction.

      2. The engine cranking speed is abnormal.
         

         HINT:

         If the engine cranking speed is high, compression loss may have occurred because carbon interfered with valve operation, etc.

      3. There is no initial combustion
         

         HINT:

         If there is no initial combustion, there is probably a wiring problem or an ignition or fuel system part malfunction.

      4. The engine stalls after starter turnoff.
         

         HINT:

         If the engine stalls after starter turnoff, the air-fuel ratio may be incorrect or the VVT may have a problem returning.

      5. The initial combustion and starter turnoff occur late
         

         HINT:

         1. If the initial combustion and starter turnoff occur late, the fuel injection volume is probably incorrect (too low or too high).
            
         2. Causes of fuel system malfunctions according to conditions present at the time of the malfunction.
            
         1. When 2 to 3 minutes have elapsed after stopping the engine: Fuel pressure loss due to the pressure regulator failing to maintain the fuel pressure.
            
         2. When 15 to 120 minutes have elapsed after stopping the engine: Problem with injector fuel seal.
            
         3. When a long time has elapsed after stopping the engine: pressure regulator is stuck open.
            

   2. Systems to inspect.
      

      1. Intake system
         
      2. Ignition system
         
      3. Fuel system
         

1. Freeze frame data exists, but the malfunction has not reoccurred and the malfunction conditions are unknown.
   
   

   Freeze Frame Data Item	Result	Suspected Area	Procedure
   Engine Speed	0 rpm (no engine cranking at all)	Battery fully depleted Engine assembly (excess friction) Starter Immobiliser system Crankshaft position sensor ECM	4 to 9
   	60 to 250 rpm (engine cranks but no initial combustion*1)	Fuel pump control system Ignition system Engine coolant temperature sensor Fuel injection system	10 to 14
   	250 rpm or higher (combustion occurs but initial combustion and starter turnoff*2 occur late)	Engine assembly (compression loss) Fuel injection system Fuel pump control system	15 to 23

   HINT:

   1. *1: First combustion after cranking begins.
      
   2. *2: Condition when engine speed increases and starter can be turned off.
      

2. When vehicle conditions can be reproduced, or when malfunction conditions are known.
   
   

   1. Problem symptoms
      
      

      Problem Symptom	Suspected Area	Suspected Component	Procedure
      The engine does not crank	Battery malfunction	Battery fully depleted	26 to 31
      	Starting system	Starter (includes pinion ring wear or tooth damage) Starter
      	Immobiliser system	Immobiliser system
      	Engine assembly	Engine assembly (excess friction) Drive plate wear or tooth damage*1 Flywheel wear or tooth damage*2
      Cranking speed too low	Battery malfunction	Battery fully depleted	32 to 34
      	Starting system	Starter
      	Engine assembly	Engine assembly (excess friction)
      Cranking speed too high	Engine assembly	Engine assembly (compression loss)
      There is no initial combustion	Fuel supply problem	Maintenance of fuel pressure by pressure regulator Fuel injector leak Fuel leak from fuel line Fuel pump control system Fuel pump	35 to 50
      	Ignition system malfunction	Spark plug Crankshaft position sensor Ignition coil
      Engine stalls after starter turnoff	Air suction	Intake system connections	51 to 59
      	Deposits in throttle body	Throttle body
      	VVT valve does not return properly	Camshaft timing oil control valve assembly
      	Mass air flow meter malfunction	Mass air flow meter
      	EGR valve does not close properly	EGR valve
      The initial combustion and starter turnoff occur late	Engine coolant temperature sensor malfunction	Engine coolant temperature sensor	60 to 73
      	Mass air flow meter malfunction	Mass air flow meter
      	Abnormal A/F learning value	Air fuel ratio sensor
      	Deviation from fuel injection characteristics	Fuel injector
      	Wet-fouled or dry-fouled spark plug	Spark plug
      	Lack of fuel pressure	Pressure regulator Fuel pump Fuel pump control system

      1. *1: for CVT
         
      2. *2: for Manual Transaxle
         

   2. Systems to inspect
      
      

      Problem Symptom	Suspected Area	Suspected Components	Procedure
      Fuel system troubleshooting A	Abnormal A/F learning value	Fuel injector	89 to 96 97 to 104
      	Rough idling	Crankshaft position sensor
      	Abnormal fuel pressure	Fuel Fuel leak from fuel line Fuel pump Pressure regulator
      Fuel system troubleshooting B	Abnormal concentration of HC in surge tank	Purge VSV system Fuel injector	105 to 107
      Fuel system troubleshooting C	Injection signal system malfunction	Fuel injector Crankshaft position sensor Camshaft position sensor ECM	75 to 79
      Intake system troubleshooting	Difference between ISC target value and opening angle when idling	Engine assembly (compression loss) Valve timing Engine coolant temperature sensor ECM	86 to 88 108 to 110
      Ignition system troubleshooting	Camshaft and/or crankshaft position sensor signal malfunction	Crankshaft position sensor system (including sensor installation) Camshaft position sensor system (including sensor installation) ECM	80 to 85 111 to 116

1. Connect the intelligent tester to the DLC3.
   

2. Turn the ignition switch to ON.
   

3. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
   

4. Read the DTCs and record the Freeze Frame Data.
   

   HINT:

   1. This freeze frame data shows the actual engine conditions when engine starting trouble occurred.
      
   2. When confirming the freeze frame data, be sure to check all 5 data sets of freeze frame data.
      
   3. The fourth set of freeze frame data is the data recorded when then the DTC is stored.
      

      Result 

      Result	Proceed to
      Only DTC P1604 is output	A
      DTCs other than P1604 are output	B

B	GO TO DTC CHART (Click here)

A

1. Connect the Intelligent tester to the DLC3.
   

2. Turn the ignition switch to ON.
   

3. Turn the tester on.
   

4. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Immobiliser Fuel Cut.
   

5. Read the value displayed on the intelligent tester.
   

   OK:

   Immobiliser Fuel Cut is OFF
   

   HINT:

   If the engine is cranked immediately after reconnecting the battery cable (key verification for immobiliser system not completed), the engine cannot be started. Key verification needs to wait for several seconds after turning the ignition switch to ON.

   Result 

   Result	Proceed to
   OK	A
   NG (w/ entry and start system)	B
   NG (w/o entry and start system)	C

B	REPAIR ENGINE IMMOBILISER SYSTEM (Click here)
C	REPAIR ENGINE IMMOBILISER SYSTEM (Click here)

A

1. Confirm the problem symptoms.
   

   Result 

   Result	Proceed to
   Freeze frame data exists, but the problem symptoms cannot be reproduced and the malfunction conditions are unknown	A
   The problem symptoms can be reproduced, or the malfunction conditions are known	B

B	Go to step 25

A

1. Connect the intelligent tester to the DLC3.
   

2. Turn the ignition switch to ON.
   

3. Using the intelligent tester, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).
   
   

   Result 

   Freeze Frame Data Item for DTC P1605		Suspected Area	Proceed to
   Engine Speed	Battery Voltage
   All 0 rpm (no engine cranking at all)	Minimum voltage is less than 5 V	Battery fully depleted	A
   	Minimum voltage is 5 V or higher	Starter malfunction Crankshaft position sensor system Excess engine friction Immobiliser system ECM	B
   60 to 250 rpm (engine cranks but no initial combustion)	-	Fuel pump control system Ignition system Engine coolant temperature sensor Immobiliser system Fuel injection system	C
   250 rpm or higher (combustion occurs but initial combustion and starter turnoff occur late)	-	Engine assembly Fuel injection system Fuel pump control system	D

   HINT:

   When DTC P1604 is stored, either "Engine Start Hesitation"*1 or "Low Rev for Eng Start"*2 in the Freeze Frame Data will be ON. If "Low Rev for Eng Start" is ON, Proceed to E.

   1. *1: This value turns ON when the engine speed does not reach a certain value for a certain period of time when starting the engine.
      
   2. *2: This value turns ON when the engine stalls immediately after starting the engine. If "Low Rev for Eng Start" is ON, as there is a possibility that the low engine speed or engine stall was caused by the user, confirm the following freeze frame data items.
      
   1. Immobilizer Fuel Cut
      
   2. Engine Speed (Starter OFF)
      
   3. Shift SW Status (R, D Range)
      

B	Go to step 5
C	Go to step 10
D	Go to step 15
E	Go to step 51

A
CHARGE OR REPLACE BATTERY

1. Connect the intelligent tester to the DLC3.
   

2. Turn the ignition switch to ON.
   

3. Using the intelligent tester, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).
   
   

   Result 

   Freeze Frame Data Item	Result	Suspected Area	Proceed to
   Battery Voltage	Minimum voltage is 6 V or higher and voltage does not fluctuate*1	Starter system	A
   	Minimum voltage is 6 V or higher and voltage fluctuates*2, *3	Crankshaft position sensor system ECM	B
   	Minimum voltage is 5 to 6 V*4	Excess engine friction Battery fully depleted	C

   HINT:

   
   
   1. *1: The 5 sets of freeze frame data show approximately the same battery voltage.
      
   2. *2: The 5 sets of freeze frame data show different battery voltages.
      
   3. *3: If the voltage fluctuates, it can be determined that cranking is being performed normally. When the engine speed is 0 rpm, the crankshaft position sensor system and/or the ECM may be malfunctioning.
      
   4. *4: There may be excess engine friction. Make sure that the crankshaft rotates smoothly when turning it by hand. Excess engine friction may have occurred temporarily. Remove the cylinder head cover and oil pan, and check for foreign matter such as iron fragments. If there is a malfunction or signs of a malfunction present, perform a detailed inspection by disassembling all the parts.
      

B	Go to step 6
C	CHECK AND REPAIR ENGINE OR BATTERY

A
CHECK STARTER SIGNAL CIRCUIT (Click here)

1. Check the tightening and installation condition of the crankshaft position sensor bolt.
   

2. Check the connection of the crankshaft position sensor connector.
   

   Result 

   Result	Proceed to
   Normal	A
   Abnormal	B

B	SECURELY REINSTALL CRANKSHAFT POSITION SENSOR (Click here)

A

1. Disconnect the crankshaft position sensor connector.
   

2. Check for oil on the connector terminals.
   

   OK:

   No oil on the terminals.
   

3. Reconnect the crankshaft position sensor connector.
   

NG	REPLACE CRANKSHAFT POSITION SENSOR (Click here)

OK

1. Disconnect the crankshaft position sensor connector.
   

2. Disconnect the ECM connector.
   

3. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance (Check for Open):

   Tester Connection	Condition	Specified Condition
   B54-1 (NE+) - B8-93 (NE+)	Always	Below 1 Ω
   B54-2 (NE-) - B8-117 (NE-)	Always	Below 1 Ω
   B54-3 (VC) - B8-116 (VCNE)	Always	Below 1 Ω

   Standard Resistance (Check for Short):

   Tester Connection	Condition	Specified Condition
   B54-1 (NE+) or B8-93 (NE+) - Body ground	Always	10 kΩ or higher
   B54-2 (NE-) or B8-117 (NE-) - Body ground	Always	10 kΩ or higher
   B54-3 (VC) or B8-116 (VCNE) - Body ground	Always	10 kΩ or higher

   HINT:

   1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      
   2. Make sure there is not an excessive amount of force applied to the wire harness.
      

4. Reconnect the ECM connector.
   

5. Reconnect the crankshaft position sensor connector.
   

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

1. Replace the crankshaft position sensor (Click here).
   

2. Check the engine start operation.
   

   OK:

   Malfunction has been repaired successfully.
   

NG	REPLACE ECM (Click here)

OK
END (CRANKSHAFT POSITION SENSOR IS DEFECTIVE)

1. Connect the intelligent tester to the DLC3.
   

2. Turn the ignition switch to ON.
   

3. Using the intelligent tester, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).
   
   

   Result 

   Freeze Frame Data Item			Suspected Area	Proceed to
   Coolant Temp, Ambient Temperature, Intake Air	Coolant Temp, Ambient Temperature	Fuel Pump/Speed Status
   Difference between Coolant Temp, Ambient Temperature and Intake Air is 10°C (18°F) or more*1	Coolant Temp is 125°C (257°F) or more, or lower than Ambient Temperature by 15°C (27°F) or more	-	Engine coolant temperature sensor	A
   	Other than above	All 5 sets of freeze frame data are ON	-	B
   		At least 1 of the 5 sets of freeze frame data is OFF	Fuel pump control system	C
   Difference between Coolant Temp, Ambient Temperature and Intake Air is less than 10°C (18°F)*2	-	At least 1 of the 5 sets of freeze frame data is OFF	Fuel pump control system	C
   		All 5 sets of freeze frame data are ON	-	B

   HINT:

   1. *1: A long time had not elapsed after stopping the engine.
      
   2. *2: A long time had elapsed after stopping the engine.
      

B	Go to step 11
C	CHECK FUEL PUMP CONTROL SYSTEM (Click here)

A
REPLACE ENGINE COOLANT TEMPERATURE SENSOR (Click here)

1. Connect the intelligent tester to the DLC3.
   

2. Disconnect the connector from the fuel suction tube.
   

3. Turn the ignition switch to ON.
   

4. Turn the tester on.
   

5. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump/Speed.
   

6. Measure the voltage according to the value(s) in the table below.
   

   Standard Voltage:

   Tester Connection	Condition	Specified Condition
   L1-4 - Body ground	Active Test is being performed	11 to 14 V

   Text in Illustration 

   *1	Front view of wire harness connector (to Fuel Pump)

   HINT:

   1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      
   2. Make sure there is not an excessive amount of force applied to the wire harness.
      

NG	CHECK FUEL PUMP CONTROL SYSTEM (Click here)

OK

1. Disconnect the fuel injector connector.
   

2. Turn the ignition switch to ON.
   

3. Measure the voltage according to the value(s) in the table below.
   

   Standard Voltage:

   Tester Connection	Switch Condition	Specified Condition
   C1-1 - Body ground	Ignition switch ON	11 to 14 V
   C2-1 - Body ground	Ignition switch ON	11 to 14 V
   C3-1 - Body ground	Ignition switch ON	11 to 14 V
   C8-1 - Body ground	Ignition switch ON	11 to 14 V

   Text in Illustration 

   *1	Front view of wire harness connector (to Fuel Injector)

   HINT:

   1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      
   2. Make sure there is not an excessive amount of force applied to the wire harness.
      

4. Reconnect the injector connector.
   

NG	CHECK FUEL INJECTOR POWER SOURCE CIRCUIT (Click here)

OK

1. Connect the intelligent tester to the DLC3.
   

2. Turn the ignition switch to ON.
   

3. Turn the tester on.
   

4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump/Speed.
   

5. When performing the Active Test, check for fuel leakage from the fuel pipes.
   

   Result 

   Result	Proceed to
   Fuel leakage or signs of fuel leakage are present	A
   No fuel leakage or signs of fuel leakage	B

   HINT:

   1. Jiggle the fuel hose and connector to increase the likelihood of detecting malfunctions that do not always occur.
      
   2. When performing the Active Test, if there is no operating noise from the fuel pump, the fuel pump system may be malfunctioning.
      
   3. Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected.
      

B	Go to step 14

A
REPAIR OR REPLACE FUEL LINE

1. Check for foreign matter such as iron particles around the fuel pump (fuel pump, fuel pump filter, and inside the fuel tank), and for signs that the fuel pump was stuck.
   

   Result 

   Result	Proceed to
   There is foreign matter or signs that fuel pump was stuck	A
   There is no foreign matter and no signs that fuel pump was stuck	B

B	Go to step 24

A
REPAIR OR REPLACE FUEL SYSTEM

1. Connect the intelligent tester to the DLC3.
   

2. Turn the ignition switch to ON.
   

3. Using the intelligent tester, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).
   
   

   Result 

   Freeze Frame Data Item				Suspected Area	Proceed to
   Coolant Temp, Ambient Temperature, Intake Air	Coolant Temp, Ambient Temperature	Long FT	Engine Speed
   Difference between Coolant Temp, Ambient Temperature and Intake Air is 10°C (18°F) or more*1	Coolant Temp is 125°C (257°F) or more, or lower than Ambient Temperature by 15°C (27°F) or more	-	-	Engine coolant temperature sensor	A
   	Other than above	-15% or less, or +15% or more	-	Fuel pump control system Fuel injector	B
   		-15 to +15%	Minimum speed is 300 rpm or more*3	Engine assembly	C
   			Minimum speed is below 300 rpm	Fuel system Intake air system	D
   Difference between Coolant Temp, Ambient Temperature and Intake Air is less than 10°C (18°F)*2	-	-15% or less, or +15% or more	-	Fuel pump control system Fuel injector	B
   		-15 to +15%	Minimum speed is 300 rpm or more*3	Engine assembly	C
   			Minimum speed is below 300 rpm	Fuel system Intake air system	D

   HINT:

   1. *1: A long time had not elapsed after stopping the engine.
      
   2. *2: A long time had elapsed after stopping the engine.
      
   3. *3: Compression loss may have occurred in the engine assembly.
      

B	Go to step 16
C	CHECK AND REPAIR ENGINE ASSEMBLY
D	Go to step 18

A
REPLACE ENGINE COOLANT TEMPERATURE SENSOR (Click here)

1. Check that no carbon is stuck to the fuel injector.
   

   OK:

   No carbon present
   

NG	REPLACE FUEL INJECTOR ASSEMBLY (Click here)

OK

1. Check for foreign matter such as iron particles around the fuel pump (fuel pump, fuel pump filter, and inside the fuel tank), and for signs that the fuel pump was stuck.
   

   Result 

   Result	Proceed to
   There is foreign matter or signs that fuel pump was stuck	A
   There is no foreign matter and no signs that fuel pump was stuck	B

B	Go to step 24

A
REPAIR OR REPLACE FUEL SYSTEM

1. Connect the intelligent tester to the DLC3.
   

2. Turn the ignition switch to ON.
   

3. Using the intelligent tester, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Click here).
   
   

   Result 

   Freeze Frame Data Item	Result	Suspected Area	Proceed to
   Coolant Temp	Engine coolant temperature is 40°C (104°F) or less*1	Pressure regulator	A
   	Engine coolant temperature is 40 to 90°C (104 to 194°F)*2	Fuel injector	B
   	Engine coolant temperature is 90°C (194°F) or more*3	Pressure regulator	A

   HINT:

   *1: If the engine coolant temperature is 40°C (104°F) or less (after stopping engine and vehicle not driven for a long period of time), the pressure regulator may be stuck open. Attach a fuel pressure gauge and check the ability to maintain fuel pressure after stopping the engine.

   *2: If the engine coolant temperature is 40 to 90°C (104 to 194°F) (15 to 120 minutes have passed after stopping the engine), there may be fuel leaking from the fuel injector.

   *3: If the engine coolant temperature is 90°C (194°F) or more (2 to 5 minutes have passed after stopping the engine), there may be a problem with the pressure regulator failing to maintain the fuel pressure. Attach a fuel pressure gauge and check the ability to maintain fuel pressure after stopping the engine.

B	Go to step 20

A

HINT:

For the fuel pressure inspection, refer to the following procedures (Click here).

1. Attach a fuel pressure gauge and check the fuel pressure after stopping the engine.
   

   Standard:

   147 kPa (1.5 kgf/cm²) or higher (5 minutes after stopping the engine)
   

   HINT:

   If the engine cannot be started, read the values after cranking the engine.

   Result 

   Result	Proceed to
   Abnormal	A
   Normal	B

B	Go to step 24

A
REPLACE FUEL PRESSURE REGULATOR ASSEMBLY (Click here)

1. Clean the inside of the surge tank with compressed air.
   

2. After stopping the engine, measure the HC concentration inside the surge tank for 15 minutes.
   

   Result 

   Result	Proceed to
   400 ppm or higher	A
   Less than 400 ppm	B

   HINT:

   If the concentration is 400 ppm or higher, the fuel injector may have a sealing problem.

B	Go to step 22

A

1. Inspect the fuel injector (Click here).
   

   Result 

   Result	Proceed to
   Abnormal	A
   Normal	B

B	Go to step 22

A
REPLACE FUEL INJECTOR ASSEMBLY (Click here)

1. Check if carbon is in the air flow passage.
   

   Result 

   Result	Proceed to
   Carbon in passage	A
   No carbon present	B

B	Go to step 23

A
REPLACE THROTTLE BODY WITH MOTOR ASSEMBLY (Click here)

1. Check the intake system for vacuum leak (Click here).
   

   OK:

   No leak from intake system.
   

NG	REPAIR OR REPLACE INTAKE SYSTEM

OK

1. Check if the engine can be started.
   

   Result 

   Result	Proceed to
   Engine can be started	A
   Engine cannot be started	B

B	Go to step 25

A
END

1. Confirm the problem symptoms.
   
   

   Result 

   Problem Symptom	Suspected Area	Proceed to
   The engine does not crank	Battery fully depleted Starter (includes pinion ring wear or teeth damage) Starter system Engine assembly (excess friction) Drive plate wear or teeth damage	A
   Abnormal cranking speed	Battery fully depleted Starter Engine assembly (excess friction, compression loss)	B
   There is no initial combustion (combustion does not occur even once)*1	Fuel pressure of pressure regulator maintained Fuel injector leak Fuel leak from fuel line Fuel pump control system Fuel pump Spark plug Crankshaft position sensor system Ignition coil system EGR valve	C
   The engine stalls after starter turnoff (engine stalls immediately after the first time the engine speed increases)*2	Intake system connections Throttle body Camshaft timing oil control valve Mass air flow meter system EGR valve	D
   The initial combustion and starter turnoff occur late*3	Engine coolant temperature sensor Mass air flow meter Air fuel ratio sensor Heated oxygen sensor Fuel injector Spark plug Pressure regulator Fuel pump Fuel pump control system	E

   HINT:

   1. If there is hesitation (cranking speed is slow and combustion occurs before passing TDC) during the initial cranking period, the battery charge may be insufficient or the starter may be malfunctioning.
      
   2. *1: If there is no initial combustion, a wire harness may be malfunctioning, or the ignition or fuel system may be malfunctioning.
      
   3. *2: If the engine stalls after starter turnoff, the air-fuel ratio may be incorrect or the Camshaft timing oil control valve may have a problem returning.
      
   4. *3: If the initial combustion and starter turnoff occur late, the fuel injection volume may be incorrect (too low or too high).
      

B	Go to step 32
C	Go to step 35
D	Go to step 51
E	Go to step 60

A

1. When cranking the engine, check for a noise indicating that the starter pinion gear is extending, and check that the starter pinion gear is not spinning freely.
   
   

   Result 

   Problem Symptom	Suspected Area	Proceed to
   A noise indicating that the starter pinion gear is extending is heard and the starter pinion gear is not spinning freely*1	Battery Excess engine friction Starter	A
   A noise indicating that the starter pinion gear is extending is heard and the starter pinion gear is spinning freely	Drive plate*2 Flywheel*3 Starter	B
   A noise indicating that the starter pinion gear is extending is not heard	Battery Starter Starter system	C

   HINT:

   1. *1: The battery may be fully depleted or there may be excess engine friction.
      
   2. *2: for CVT
      
   3. *3: for Manual Transaxle
      

B	Go to step 29
C	Go to step 30

A

1. Check the electrolyte quantity.
   

   OK:

   Electrolyte quantity is within the specified range.
   

2. Inspect the specific gravity.
   

   1. Inspect the specific gravity of each cell.
      

      Standard specific gravity:

      1.25 to 1.29 (electrolyte is at 20°C (68°F))
      

      HINT:

      1. If the result is not as specified, recharge or replace the battery.
         
      2. It is not necessary to inspect a maintenance-free battery.
         

3. Inspect the battery voltage.
   

   1. Turn the ignition switch off and turn on the headlights for 20 to 30 seconds. This will remove the surface charge from the battery.
      

   2. Measure the battery voltage.
      

      Standard voltage:

      12.5 to 12.9 V (electrolyte is at 20°C (68°F))
      

      HINT:

      If the result is not as specified, recharge or replace the battery.

   3. Measure the battery voltage when cranking the engine.
      

      Standard:

      Approximately 6 V or higher (0°C (32°F) or higher)
      

      HINT:

      When the battery is depleted, the horn becomes quieter.

NG	CHARGE OR REPLACE BATTERY

OK

1. Check that the crankshaft rotates smoothly when rotating it by hand.
   

   OK:

   Crankshaft rotates smoothly.
   

   Result 

   Result	Proceed to
   NG	A
   OK (for Manual Transaxle)	B
   OK (for CVT)	C

   HINT:

   Excess engine friction may have occurred temporarily. Remove the cylinder head cover and oil pan, and check for foreign matter such as iron fragments. If there is a malfunction or signs of a malfunction present, perform a detailed inspection by disassembling all the parts.

B	INSPECT STARTER ASSEMBLY (FOR MANUAL TRANSAXLE) (Click here)
C	INSPECT STARTER ASSEMBLY (FOR CVT) (Click here)

A
REPAIR OR REPLACE ENGINE ASSEMBLY (Click here)

1. Remove the starter.
   

   Transaxle	See page
   Manual Transaxle	Click here
   CVT	Click here

2. Check for starter pinion gear wear and damage.
   

   Standard:

   There is no wear or damage.
   

   Result 

   Result	Proceed to
   NG	A
   OK (for Manual Transaxle)	B
   OK (for CVT)	C

3. Install the starter.
   

   Transaxle	See page
   Manual Transaxle	Click here
   CVT	Click here

B	REPLACE FLYWHEEL SUB-ASSEMBLY (Click here)
C	REPLACE DRIVE PLATE AND RING GEAR (Click here)

A
REPLACE STARTER ASSEMBLY

1. Check the electrolyte quantity.
   

   OK:

   Electrolyte quantity is within the specified range.
   

2. Inspect the specific gravity.
   

   1. Inspect the specific gravity of each cell.
      

      Standard specific gravity:

      1.25 to 1.29 (electrolyte is at 20°C (68°F))
      

      HINT:

      1. If the result is not as specified, recharge or replace the battery.
         
      2. It is not necessary to inspect a maintenance-free battery.
         

3. Inspect the battery voltage.
   

   1. Turn the ignition switch off and turn on the headlights for 20 to 30 seconds. This will remove the surface charge from the battery.
      

   2. Measure the battery voltage.
      

      Standard voltage:

      12.5 to 12.9 V (electrolyte is at 20°C (68°F))
      

      HINT:

      If the result is not as specified, recharge or replace the battery.

   3. Measure the battery voltage when cranking the engine.
      

      Standard:

      Approximately 6 V or higher (0°C (32°F) or higher)
      

      HINT:

      When the battery is depleted, the horn becomes quieter.

NG	CHARGE OR REPLACE BATTERY

OK

1. Inspect the starter.
   

NG	REPLACE STARTER ASSEMBLY

OK
CHECK STARTER SIGNAL CIRCUIT (Click here)

1. Check the cranking speed.
   
   

   Result 

   Problem Symptom	Suspected Area	Proceed to
   Cranking speed is slow (100 rpm or less)	Battery Starter Excess engine friction	A
   Cranking speed is fast (300 rpm or more)*1	Engine compression loss	B

   HINT:

   *1: If the cranking speed is fast, there may be compression loss.

B	CHECK AND REPAIR ENGINE ASSEMBLY

A

1. Check the electrolyte quantity.
   

   OK:

   Electrolyte quantity is within the specified range.
   

2. Inspect the specific gravity.
   

   1. Inspect the specific gravity of each cell.
      

      Standard specific gravity:

      1.25 to 1.29 (electrolyte is at 20°C (68°F))
      

      HINT:

      1. If the result is not as specified, recharge or replace the battery.
         
      2. It is not necessary to inspect a maintenance-free battery.
         

3. Inspect the battery voltage.
   

   1. Turn the ignition switch off and turn on the headlights for 20 to 30 seconds. This will remove the surface charge from the battery.
      

   2. Measure the battery voltage.
      

      Standard voltage:

      12.5 to 12.9 V (electrolyte is at 20°C (68°F))
      

      HINT:

      If the result is not as specified, recharge or replace the battery.

   3. Measure the battery voltage when cranking the engine.
      

      Standard:

      Approximately 6 V or higher (0°C (32°F) or higher)
      

      HINT:

      When the battery is depleted, the horn becomes quieter.

NG	CHARGE OR REPLACE BATTERY

OK

1. Check that the crankshaft rotates smoothly when rotating it by hand.
   

   OK:

   Crankshaft rotates smoothly.
   

   Result 

   Result	Proceed to
   NG	A
   OK (for Manual Transaxle)	B
   OK (for CVT)	C

   HINT:

   Excess engine friction may have occurred temporarily. Remove the cylinder head cover and oil pan, and check for foreign matter such as iron fragments. If there is a malfunction or signs of a malfunction present, perform a detailed inspection by disassembling all the parts.

B	INSPECT STARTER ASSEMBLY (FOR MANUAL TRANSAXLE) (Click here)
C	INSPECT STARTER ASSEMBLY (FOR CVT) (Click here)

A
REPAIR OR REPLACE ENGINE ASSEMBLY (Click here)

1. Using a sound scope or screwdriver, check for an injector operating noise while cranking the engine.
   

   OK:

   Fuel injector operating noise is heard.
   

NG	Go to step 48

OK

1. Inspect the fuel pressure (Click here).
   

NG	Go to step 46

OK

1. Check for sparks (Click here).
   

NG	Go to step 41

OK

1. Confirm the conditions present when the malfunction occurred based on the customer problem analysis.
   
   

   Result 

   Problem Symptom	Suspected Area	Proceed to
   When the engine is stopped and a long time has passed, engine starting trouble occurs*1	Pressure regulator is stuck open	A
   When the engine is stopped and approximately 15 to 120 minutes have passed, engine starting trouble occurs*2	Fuel injector leak	B
   When the engine is stopped and approximately 2 to 3 minutes have passed, engine starting trouble occurs*3	Failure to maintain fuel pressure by Pressure regulator	A
   Condition other than above, or there is an inconsistency in the conditions present when engine starting trouble occurs	-	C*4

   HINT:

   *1: The pressure regulator may be stuck open. Attach a fuel pressure gauge and check the ability to maintain fuel pressure after stopping the engine.

   *2: Fuel may be leaking from the fuel injector.

   *3: The pressure regulator may not be able to maintain the fuel pressure. Attach a fuel pressure gauge and check the ability to maintain fuel pressure after stopping the engine.

   *4: From step 74, perform fuel system troubleshooting C (steps 75 to 79).

B	Go to step 40
C	Go to step 74

A

HINT:

For the fuel pressure inspection, refer to the following procedures (Click here).

1. Attach a fuel pressure gauge and check the fuel pressure after stopping the engine.
   

   Result 

   Result	Proceed to
   Less than 147 kPa (1.5 kgf/cm2) (5 minutes after stopping the engine)	A
   147 kPa (1.5 kgf/cm2) or higher (5 minutes after stopping the engine)	B*1

   HINT:

   1. If the engine cannot be started, check the fuel pressure after cranking the engine.
      
   2. *1: From step 74, perform fuel system troubleshooting C (steps 75 to 79).
      

B	Go to step 74

A
REPLACE FUEL PRESSURE REGULATOR ASSEMBLY (Click here)

1. After stopping the engine, measure the HC concentration inside the surge tank for 15 minutes.
   

   Result 

   Result	Proceed to
   400 ppm or higher	A
   Less than 400 ppm	B*1

   HINT:

   1. If the concentration is 400 ppm or higher, the fuel injector may have a sealing problem.
      
   2. *1: From step 74, perform fuel system troubleshooting C (steps 75 to 79).
      

B	Go to step 74

A
REPLACE FUEL INJECTOR ASSEMBLY (Click here)

1. Inspect the spark plugs (Click here).
   

   HINT:

   Even if the spark plug of only one cylinder is malfunctioning, replace the spark plugs of all cylinders.

NG	REPLACE SPARK PLUG (Click here)

OK

1. Connect the intelligent tester to the DLC3.
   

2. Turn the ignition switch to ON.
   

3. Turn the tester on.
   

4. Enter the following menus: Powertrain / Engine and ECT / Data List / Engine Speed.
   

5. Start the engine.
   

6. While running the engine, read the Engine Speed value.
   

   OK:

   A value that matches the actual engine speed is constantly output.
   

   HINT:

   1. Check the engine speed using a line graph.
      
   2. If the engine cannot be started, check the engine speed while cranking the engine.
      
   3. If the engine speed is 0 rpm, the crankshaft position sensor may have an open or short circuit.
      

NG	CHECK CRANKSHAFT POSITION SENSOR CIRCUIT

OK

1. Disconnect the ignition coil with igniter connector.
   

2. Turn the ignition switch to ON.
   

3. Measure the voltage according to the value(s) in the table below.
   

   Standard Voltage:

   Tester Connection	Switch Condition	Specified Condition
   C4-1 (+B) - C4-4 (GND)	Ignition switch ON	11 to 14 V
   C5-1 (+B) - C5-4 (GND)	Ignition switch ON	11 to 14 V
   C6-1 (+B) - C6-4 (GND)	Ignition switch ON	11 to 14 V
   C9-1 (+B) - C9-4 (GND)	Ignition switch ON	11 to 14 V

   HINT:

   1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      
   2. Make sure there is not an excessive amount of force applied to the wire harness.
      

4. Reconnect the ignition coil with igniter connector.
   

NG	CHECK POWER SOURCE CIRCUIT (Click here)

OK

1. Disconnect the ignition coil with igniter connector.
   

2. Disconnect the ECM connector.
   

3. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance (Check for Open):

   Tester Connection	Condition	Specified Condition
   C4-2 (IGF) - B8-82 (IGF1)	Always	Below 1 Ω
   C5-2 (IGF) - B8-82 (IGF1)	Always	Below 1 Ω
   C6-2 (IGF) - B8-82 (IGF1)	Always	Below 1 Ω
   C9-2 (IGF) - B8-82 (IGF1)	Always	Below 1 Ω

   Standard Resistance (Check for Short):

   Tester Connection	Condition	Specified Condition
   C4-2 (IGF) or B8-82 (IGF1) - Body ground	Always	10 kΩ or higher
   C5-2 (IGF) or B8-82 (IGF1) - Body ground	Always	10 kΩ or higher
   C6-2 (IGF) or B8-82 (IGF1) - Body ground	Always	10 kΩ or higher
   C9-2 (IGF) or B8-82 (IGF1) - Body ground	Always	10 kΩ or higher

   HINT:

   1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      
   2. Make sure there is not an excessive amount of force applied to the wire harness.
      

4. Reconnect the ignition coil with igniter connector.
   

5. Reconnect the ECM connector.
   

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

1. Disconnect the ignition coil with igniter connector.
   

2. Disconnect the ECM connector.
   

3. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance (Check for Open):

   Tester Connection	Condition	Specified Condition
   C4-3 (IGT1) - B8-109 (IGT1)	Always	Below 1 Ω
   C5-3 (IGT2) - B8-108 (IGT2)	Always	Below 1 Ω
   C6-3 (IGT3) - B8-107 (IGT3)	Always	Below 1 Ω
   C9-3 (IGT4) - B8-106 (IGT4)	Always	Below 1 Ω

   Standard Resistance (Check for Short):

   Tester Connection	Condition	Specified Condition
   C4-3 (IGT1) or B8-109 (IGT1) - Body ground	Always	10 kΩ or higher
   C5-3 (IGT2) or B8-108 (IGT2) - Body ground	Always	10 kΩ or higher
   C6-3 (IGT3) or B8-107 (IGT3) - Body ground	Always	10 kΩ or higher
   C9-3 (IGT4) or B8-106 (IGT4) - Body ground	Always	10 kΩ or higher

   HINT:

   1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      
   2. Make sure there is not an excessive amount of force applied to the wire harness.
      
   3. If the wire harness is normal, after replacing the ignition coil, check if engine starting trouble occurs again. If engine starting trouble occurs again, proceed to step 74 and perform troubleshooting for the ignition system (steps 80 to 85).
      

4. Reconnect the ignition coil with igniter connector.
   

5. Reconnect the ECM connector.
   

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK
REPLACE IGNITION COIL (Click here)

1. Connect the intelligent tester to the DLC3.
   

2. Turn the ignition switch to ON.
   

3. Turn the tester on.
   

4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump/Speed.
   

5. When performing the Active Test, check for an operating sound from the fuel pump.
   

   OK:

   Control the Fuel Pump/Speed	Specified Condition
   ON	Operating sound heard
   OFF	Operating sound not heard

   HINT:

   Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.

NG	CHECK FUEL PUMP CONTROL SYSTEM (Click here)

OK

1. Connect the intelligent tester to the DLC3.
   

2. Turn the ignition switch to ON.
   

3. Turn the tester on.
   

4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump/Speed.
   

5. When performing the Active Test, check for fuel leakage from the fuel pipes.
   

   Result 

   Result	Proceed to
   Fuel leakage or signs of fuel leakage are present	A
   No fuel leakage or signs of fuel leakage	B

   HINT:

   1. Jiggle the fuel hose and connector to increase the likelihood of detecting malfunctions that do not always occur.
      
   2. When performing the Active Test, if there is no operating noise from the fuel pump, the fuel pump system may be malfunctioning.
      
   3. Check if the vehicle ran out of fuel, as engine starting trouble due to running out of fuel is also detected.
      
   4. If there are no fuel leaks, after inspecting the fuel pump control system, check if engine starting trouble occurs again. If engine starting trouble occurs again, proceed to step 74 and perform fuel system troubleshooting (steps 75 to 79).
      

B	CHECK FUEL PUMP CONTROL SYSTEM (Click here)

A
REPAIR OR REPLACE FUEL LINE

1. Connect the intelligent tester to the DLC3.
   

2. Turn the ignition switch to ON.
   

3. Turn the tester on.
   

4. Enter the following menus: Powertrain / Engine and ECT / Data List / Engine Speed.
   

5. Start the engine.
   

6. While running the engine, read the Engine Speed value.
   

   OK:

   A value that matches the actual engine speed is constantly output.
   

   HINT:

   1. Check the engine speed using a line graph.
      
   2. If the engine cannot be started, check the engine speed while cranking the engine.
      
   3. If the engine speed is 0 rpm, the crankshaft position sensor may have an open or short circuit.
      

NG	REPLACE CRANKSHAFT POSITION SENSOR (Click here)

OK

1. Disconnect the fuel injector connector.
   

2. Turn the ignition switch to ON.
   

3. Measure the voltage according to the value(s) in the table below.
   

   Standard Voltage:

   Tester Connection	Switch Condition	Specified Condition
   C1-1 - Body ground	Ignition switch ON	11 to 14 V
   C2-1 - Body ground	Ignition switch ON	11 to 14 V
   C3-1 - Body ground	Ignition switch ON	11 to 14 V
   C8-1 - Body ground	Ignition switch ON	11 to 14 V

   HINT:

   1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      
   2. Make sure there is not an excessive amount of force applied to the wire harness.
      

4. Reconnect the injector connector.
   

NG	CHECK POWER SOURCE CIRCUIT (Click here)

OK

1. Disconnect the injector connector.
   

2. Disconnect the ECM connector.
   

3. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance (Check for Open):

   Tester Connection	Condition	Specified Condition
   C1-2 - B8-86 (#10)	Always	Below 1 Ω
   C2-2 - B8-85 (#20)	Always	Below 1 Ω
   C3-2 - B8-84 (#30)	Always	Below 1 Ω
   C8-2 - B8-83 (#40)	Always	Below 1 Ω

   Standard Resistance (Check for Short):

   Tester Connection	Condition	Specified Condition
   C1-2 or B8-86 (#10) - Body ground	Always	10 kΩ or higher
   C2-2 or B8-85 (#20) - Body ground	Always	10 kΩ or higher
   C3-2 or B8-84 (#30) - Body ground	Always	10 kΩ or higher
   C8-2 or B8-83 (#40) - Body ground	Always	10 kΩ or higher

   HINT:

   1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      
   2. Make sure there is not an excessive amount of force applied to the wire harness.
      

4. Reconnect the injector connector.
   

5. Reconnect the ECM connector.
   

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK
REPLACE ECM (Click here)

1. Inspect the mass air flow meter (Click here).
   

NG	Go to step 59

OK

1. Check for air suction in the intake system [vacuum hose disconnection, cracks, gaskets, etc.] (Click here).
   

   HINT:

   1. If the accelerator pedal is released after racing the engine, the inspection is easier to perform because the vacuum inside the intake pipes increases and the air suction noise becomes louder.
      
   2. If Short FT and Long FT are largely different from the normal values when idling (intake air volume is small) and almost the same as the normal values when racing the engine (intake air volume is high), air suction may be present.
      

   OK:

   There is no air suction.
   

NG	REPAIR OR REPLACE INTAKE SYSTEM

OK

1. Disconnect the throttle body connector.
   

   HINT:

   When the connector is disconnected, the vehicle enters fail-safe mode and the throttle valve opening angle is 4 to 7°.

2. Crank the engine and check that it starts.
   

   Result 

   Result	Proceed to
   Engine starts	A
   Engine does not start	B

3. Connect the throttle body connector.
   

   HINT:

   When this inspection is performed, the MIL may illuminate. After finishing the inspection, check and clear DTCs (Click here).

B	Go to step 55

A

1. Check if carbon is in the air flow passage.
   

   OK:

   No carbon present.
   

NG	REMOVE FOREIGN OBJECT AND CLEAN THROTTLE BODY

OK

1. Connect the intelligent tester to the DLC3.
   

2. Turn the tester on.
   

3. Warm up the engine.
   

4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT system (Bank 1).
   

   HINT:

   When performing the Active Test, make sure the A/C is on and the shift lever is in N.

5. Check the engine speed while operating the Oil Control Valve (OCV) using the intelligent tester.
   

   OK:

   Tester Operation	Specified Condition
   OFF	Normal engine speed
   ON	Engine idles roughly or stalls

   Result 

   Result	Proceed to
   NG	A
   OK	B

   HINT:

   1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      
   2. When the results of the inspection using the Active Test are normal but the valve operating noise is abnormal, check the valve for any signs of problems.
      
   3. If the camshaft timing oil control valve assembly is stuck ON, the valve overlap increases and combustion worsens due to the internal EGR which may cause the engine to stall.
      

B	Go to step 56

A
REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT) (Click here)

1. Connect the intelligent tester to the DLC3.
   

2. Turn the tester on.
   

3. Warm up the engine.
   

4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Exhaust Linear (Bank1).
   

5. Check the engine speed while operating the Oil Control Valve (OCV) using the intelligent tester.
   

   OK*1:

   Tester Operation	Specified Condition
   0%	Normal engine speed
   127%	Engine idles roughly or stalls

   HINT:

   1. *1: From step 74, perform intake system troubleshooting (steps 86 to 88). If engine starting trouble still occurs, perform fuel system troubleshooting A (steps 89 to 96).
      
   2. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      
   3. When the results of the inspection using the Active Test are normal but the valve operating noise is abnormal, check the valve for any signs of problems.
      
   4. If the camshaft timing oil control valve assembly is stuck ON, the valve overlap increases and combustion worsens due to the internal EGR which may cause the engine to stall.
      

NG	REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR EXHAUST CAMSHAFT) (Click here)

OK

1. Connect the intelligent tester to the DLC3.
   

2. Turn the ignition switch to ON.
   

3. Turn the tester on.
   

4. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or more.
   

   HINT:

   1. When performing the Active Test, make sure the shift lever is in N or neutral.
      
   2. The air conditioning switch and all accessory switches should be off.
      

5. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the EGR Step Position.
   

6. Check the MAP and Engine Speed in Date List at the idling condition while performing Active Test.
   

   OK:

   MAP and idling condition change in response to EGR step position.
   

   
   

   Standard:

   
   

   -	EGR Step Position (Active Test)
   	0 Steps	0 to 30 Steps
   Idling condition	Steady idling	Idling changes from steady to rough idling
   MAP (Data List)	MAP value is 20 to 40 kPa (150 to 300 mmHg) (EGR valve is fully closed)	MAP value is at least +10 kPa (75 mmHg) higher than when EGR valve is fully closed

   HINT:

   1. Do not leave the EGR valve open for 10 seconds or more during the Active Test.
      
   2. Be sure to return the EGR valve to step 0 when Active Test is completed.
      

   Result 

   Result	Proceed to
   NG	A
   OK	B

B	Go to step 74

A

1. Remove the EGR valve assembly (Click here).
   

2. Check if the EGR valve is stuck open.
   

   OK:

   EGR valve is tightly closed (It is not stuck open)
   

   Result 

   Result	Proceed to
   NG	A
   OK	B

3. Reinstall the EGR valve assembly (Click here).
   

B	Go to step 74

A
REPLACE EGR VALVE ASSEMBLY (Click here)

1. Disconnect the mass air flow meter connector.
   

2. Disconnect the ECM connector.
   

3. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance (Check for Open):

   Tester Connection	Condition	Specified Condition
   B53-5 (VG) - B8-69 (VG)	Always	Below 1 Ω
   B53-4 (E2G) - B8-92 (E2G)	Always	Below 1 Ω

   Standard Resistance (Check for Short):

   Tester Connection	Condition	Specified Condition
   B53-5 (VG) or B8-69 (VG) - Body ground	Always	10 kΩ or higher

   HINT:

   1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      
   2. Make sure there is not an excessive amount of force applied to the wire harness.
      
   3. If the wire harness is normal, after replacing the mass air flow meter, check if engine starting trouble occurs again. If engine starting trouble occurs again, proceed to step 74 and perform intake system troubleshooting (steps 86 to 88). If engine starting trouble still occurs, perform fuel system troubleshooting A (steps 89 to 96).
      

4. Reconnect the ECM connector.
   

5. Reconnect the mass air flow meter connector.
   

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK
REPLACE MASS AIR FLOW METER (Click here)

1. Inspect the engine coolant temperature sensor (Click here).
   

   HINT:

   If the engine coolant temperature sensor is malfunctioning, after replacing it, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 74 and perform fuel system troubleshooting A (steps 97 to 104), fuel system troubleshooting B (steps 105 to 107), intake system troubleshooting (steps 108 to 110), and ignition system troubleshooting (steps 111 to 116), in that order.

NG	REPLACE ENGINE COOLANT TEMPERATURE SENSOR (Click here)

OK

1. Disconnect the engine coolant temperature sensor connector.
   

2. Disconnect the ECM connector.
   

3. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance (Check for Open):

   Tester Connection	Condition	Specified Condition
   B38-2 - B8-64 (THW)	Always	Below 1 Ω
   B38-1 - B8-65 (ETHW)	Always	Below 1 Ω

   Standard Resistance (Check for Short):

   Tester Connection	Condition	Specified Condition
   B38-2 - B8-64 (THW) - Body ground	Always	10 kΩ or higher

   HINT:

   1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      
   2. Make sure there is not an excessive amount of force applied to the wire harness.
      
   3. If the wire harness or connector is malfunctioning, after replacing or repairing it, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 74 and perform fuel system troubleshooting A (steps 97 to 104), fuel system troubleshooting B (steps 105 to 107), intake system troubleshooting (steps 108 to 110), and ignition system troubleshooting (steps 111 to 116), in that order.
      

4. Reconnect the ECM connector.
   

5. Reconnect the water temperature sensor connector.
   

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

1. Inspect the mass air flow meter (Click here).
   

   HINT:

   If the mass air flow meter is malfunctioning, after replacing it, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 74 and perform fuel system troubleshooting A (steps 97 to 104), fuel system troubleshooting B (steps 105 to 107), intake system troubleshooting (steps 108 to 110), and ignition system troubleshooting (steps 111 to 116), in that order.

NG	REPLACE MASS AIR FLOW METER (Click here)

OK

1. Disconnect the mass air flow meter connector.
   

2. Disconnect the ECM connector.
   

3. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance (Check for Open):

   Tester Connection	Condition	Specified Condition
   B53-5 (VG) - B8-69 (VG)	Always	Below 1 Ω
   B53-4 (E2G) - B8-92 (E2G)	Always	Below 1 Ω

   Standard Resistance (Check for Short):

   Tester Connection	Condition	Specified Condition
   B53-5 (VG) or B8-69 (VG) - Body ground	Always	10 kΩ or higher

   HINT:

   1. Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      
   2. Make sure there is not an excessive amount of force applied to the wire harness.
      
   3. If the wire harness or connector is malfunctioning, after replacing or repairing it, check if engine starting trouble occurs again. If engine starting trouble occurs, replace the ECM. If engine starting trouble still occurs, proceed to step 74 and perform fuel system troubleshooting A (steps 97 to 104), fuel system troubleshooting B (steps 105 to 107), intake system troubleshooting (steps 108 to 110), and ignition system troubleshooting (steps 111 to 116), in that order.