DTC    P0351    Ignition Coil "A" Primary / Secondary Circuit

DTC    P0352    Ignition Coil "B" Primary / Secondary Circuit

DTC    P0353    Ignition Coil "C" Primary / Secondary Circuit

DTC    P0354    Ignition Coil "D" Primary / Secondary Circuit

for Preparation Click here


DESCRIPTION

HINT:
  1. These DTCs indicate malfunctions relating to the primary circuit.
  2. If DTC P0351 is set, check the No. 1 ignition coil circuit.
  3. If DTC P0352 is set, check the No. 2 ignition coil circuit.
  4. If DTC P0353 is set, check the No. 3 ignition coil circuit.
  5. If DTC P0354 is set, check the No. 4 ignition coil circuit.

A Direct Ignition System (DIS) is used on this vehicle.
The DIS is an ignition system in which each cylinder is ignited by its own ignition coil and spark plug. The secondary wiring of each ignition coil generates a powerful voltage which is applied directly to each spark plug. The spark passes from the center electrode of the spark plug to the ground electrode.
The ECM determines the ignition timing and transmits the ignition (IGT) signals to each cylinder. Using the IGT signal, the ECM turns the power transistor inside the igniter on and off. The power transistor, in turn, switches on and off the current to the primary coil. When the current to the primary coil is cut off, a powerful voltage is generated in the secondary coil. This voltage is applied to the spark plugs, causing them to spark inside the cylinders. As the ECM cuts the current to the primary coil, the igniter sends back an ignition confirmation (IGF) signal to the ECM, for each cylinder ignition.

A205454E03


DTC No.
DTC Detection Condition
Trouble Area
P0351
P0352
P0353
P0354
No IGF signal to ECM while engine running
(1 trip detection logic)
  1. Ignition system
  2. Open or short in IGF1 or IGT circuit (1 to 4) between ignition coil and ECM
  3. No. 1 to No. 4 ignition coil assemblies
  4. ECM

  1. A122717E17
  2. Reference: Inspection using an oscilloscope.
  3. While cranking or idling the engine, check the waveform between terminals IGT (1 to 4) and E1, and IGF1 and E1 of the ECM connector.
    ECM Terminal Name
    		Between IGT (1 to 4) and E1
    Between IGF1 and E1
    Tester Range
    		2 V/DIV, 20 ms/DIV
    Condition
    		Idling

WIRING DIAGRAM


A187738E01


INSPECTION PROCEDURE

NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT:
Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

1.CHECK HARNESS AND CONNECTOR (IGNITION COIL - BODY GROUND)


    A200905E08

  1. Disconnect the ignition coil assembly connectors.

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

    Standard Resistance (Check for Open):
    Tester Connection
    		Condition
    		Specified Condition
    C4-4 (GND) - Body ground
    		Always
    		Below 1 Ω
    C5-4 (GND) - Body ground
    		Always
    		Below 1 Ω
    C6-4 (GND) - Body ground
    		Always
    		Below 1 Ω
    C9-4 (GND) - Body ground
    		Always
    		Below 1 Ω

    Text in Illustration 
    *1
    		Front view of wire harness connector
    (to Ignition Coil Assembly)

  1. Reconnect the ignition coil assembly connectors.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


2.INSPECT IGNITION COIL ASSEMBLY (POWER SOURCE)


    A200905E09

  1. Disconnect the ignition coil assembly connectors.

  1. Turn the ignition switch to ON.

  1. 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

    Text in Illustration 
    *1
    		Front view of wire harness connector
    (to Ignition Coil Assembly)

  1. Reconnect the ignition coil assembly connectors.



NG
Go to step 5
OK


3.CHECK HARNESS AND CONNECTOR (IGNITION COIL - ECM)

  1. Disconnect the ignition coil assembly connectors.

  1. Disconnect the ECM connector.

  1. 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
    C4-3 (IGT) - 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
    C4-2 (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
    C4-3 (IGT) 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

  1. Reconnect the ECM connector.

  1. Reconnect the ignition coil assembly connectors.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK WHETHER DTC OUTPUT RECURS (DTC P0351, P0352, P0353 OR P0354)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the tester on.

  1. Clear the DTCs (Click here).

  1. Shuffle arrangement of the ignition coils with igniters (among No. 1 to No. 4 cylinders).

    NOTICE:
    Do not shuffle the connectors.

  1. Perform a simulation test.

  1. Enter the following menus: Powertrain / Engine and ECT / DTC.

  1. Read the DTCs.
    Result 
    Result
    		Proceed to
    Same DTC output
    		A
    Different ignition coil DTC output
    		B



B
REPLACE IGNITION COIL ASSEMBLY (Click here)
A

REPLACE ECM (Click here)  

5.CHECK HARNESS AND CONNECTOR (IGNITION COIL - INTEGRATION RELAY)

  1. Disconnect the ignition coil assembly connectors.

  1. Remove the integration relay.

  1. Disconnect the integration relay connector.

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

    Standard Resistance (Check for Open):
    Tester Connection
    		Condition
    		Specified Condition
    C4-1 (+B) - 1E-4
    		Always
    		Below 1 Ω
    C5-1 (+B) - 1E-4
    		Always
    		Below 1 Ω
    C6-1 (+B) - 1E-4
    		Always
    		Below 1 Ω
    C9-1 (+B) - 1E-4
    		Always
    		Below 1 Ω

    Standard Resistance (Check for Short):
    Tester Connection
    		Condition
    		Specified Condition
    C4-1 (+B) or 1E-4 - Body ground
    		Always
    		10 kΩ or higher
    C5-1 (+B) or 1E-4 - Body ground
    		Always
    		10 kΩ or higher
    C6-1 (+B) or 1E-4 - Body ground
    		Always
    		10 kΩ or higher
    C9-1 (+B) or 1E-4 - Body ground
    		Always
    		10 kΩ or higher

  1. Reconnect the integration relay connector.

  1. Reinstall the integration relay.

  1. Reconnect the ignition coil assembly connectors.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

CHECK ECM POWER SOURCE CIRCUIT (Click here)