POWER DOOR LOCK CONTROL SYSTEM > All Doors cannot be Locked / Unlocked Simultaneously

for Preparation Click here


DESCRIPTION

The main body ECU receives switch signals from the power window regulator master switch, and driver side door key cylinder switch signals from the front door lock. The main body ECU activates the door lock motor on each door according to these signals.

WIRING DIAGRAM


B215944E01


INSPECTION PROCEDURE

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

HINT:
Since the power door lock control system has functions that use LIN communication, first confirm that there is no malfunction in the communication system by inspecting the LIN communication functions in accordance with How to Proceed with Troubleshooting. Then conduct the following troubleshooting procedure.

1.CHECK DOOR LOCK OPERATION

Result 
Result
Proceed to
All doors cannot be locked through power window regulator master switch and driver side door key cylinder
A
All doors cannot be locked through power window regulator master switch
B
All doors cannot be locked through driver side door key cylinder
C


B
Go to step 5

C
Go to step 6
A


2.CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK - BATTERY AND BODY GROUND)

B215945E01


Text in Illustration 
*1
Front view of wire harness connector
(to Instrument Panel Junction Block)

  1. Disconnect the 3A, 3B and 3D junction block connectors.

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

    Standard Voltage :
    Tester Connection
    		Condition
    		Specified Condition
    3A-1 (ALTB) - Body ground
    		Always
    		11 to 14 V
    3B-37 (ECUB) - Body ground
    		Always
    		11 to 14 V

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    3D-5 (GND1) - Body ground
    		Always
    		Below 1 Ω



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.REPLACE MAIN BODY ECU

  1. Temporarily replace the main body ECU with a new or normally functioning one (Click here).


NEXT


4.CHECK POWER DOOR LOCK OPERATION

  1. When the door control switch on the master switch assembly is operated, check that the locked doors unlock (Click here).

    OK:
    Locked doors unlock.



NG
REPLACE INSTRUMENT PANEL JUNCTION BLOCK
OK

END (MAIN BODY ECU IS DEFECTIVE) 

5.READ VALUE USING INTELLIGENT TESTER (DOOR LOCK SWITCH STATUS AND DOOR UNLOCK SWITCH STATUS)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the tester on.

  1. Enter the following menus: Body Electrical / Master Switch / Data List.

  1. According to the display on the intelligent tester, read the Data List.

    Master Switch  
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Door Lock Switch Status
    		Driver door lock switch signal/ ON or OFF
    		ON: Driver door lock switch is turned to LOCK
    OFF: ON: Driver door lock switch is not turned
    		-
    Door Unlock Switch Status
    		Driver door unlock switch signal/ ON or OFF
    		ON: Driver door unlock switch is turned to UNLOCK
    OFF: ON: Driver door unlock switch is not turned
    		-

OK:
The display is as specified in the normal condition column.



NG
REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY (Click here)
OK

REPLACE MAIN BODY ECU (Click here)  

6.READ VALUE USING INTELLIGENT TESTER (DOOR KEY LINKED LOCK AND UNLOCK SWITCH)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the tester on.

  1. Enter the following menus: Body Electrical / Main Body / Data List.

  1. According to the display on the intelligent tester, read the Data List.

    Main Body 
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Door Key Linked Lock SW
    		Door key linked lock switch signal / ON or OFF
    		ON: Driver side door key cylinder turned to lock position
    OFF: Driver side door key cylinder not turned
    		-
    Door Key Linked Unlock SW
    		Door key linked unlock switch signal / ON or OFF
    		ON: Driver side door key cylinder turned to unlock position
    OFF: Driver side door key cylinder not turned
    		-

    OK:
    The display is as specified in the normal condition column.



NG
Go to step 7
OK

REPLACE MAIN BODY ECU (Click here)  

7.CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK - MAIN BODY ECU AND BODY GROUND)


    B215946E02

  1. for LHD:

    1. Disconnect the F5 door lock connector.

    2. Disconnect the D42 main body ECU connectors.

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

      Standard Resistance:
      Tester Connection
      		Condition
      		Specified Condition
      F5-10 (UL) - D42-12 (UL2)
      		Always
      		Below 1 Ω
      F5-9 (L) - D42-11 (L2)
      		Always
      		Below 1 Ω
      F5-7 (E) - Body ground
      		Always
      		Below 1 Ω
      F5-10 (UL) - Body ground
      		Always
      		10 kΩ or higher
      F5-9 (L) - Body ground
      		Always
      		10 kΩ or higher

      Text in Illustration 
      *1
      		Front view of wire harness connector
      (to Main Body ECU)
      *2
      		Front view of wire harness connector
      (to Front Door Lock)



    B215946E03

  1. for RHD:

    1. Disconnect the E5 door lock connector.

    2. Disconnect the D42 main body ECU connectors.

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

      Standard Resistance:
      Tester Connection
      		Condition
      		Specified Condition
      E5-5 (UL) - D42-12 (UL2)
      		Always
      		Below 1 Ω
      E5-6 (L) - D42-11 (L2)
      		Always
      		Below 1 Ω
      E5-8 (E) - Body ground
      		Always
      		Below 1 Ω
      E5-5 (UL) - Body ground
      		Always
      		10 kΩ or higher
      E5-6 (L) - Body ground
      		Always
      		10 kΩ or higher

      Text in Illustration 
      *1
      		Front view of wire harness connector
      (to Main Body ECU)
      *2
      		Front view of wire harness connector
      (to Front Door Lock)



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


8.INSPECT FRONT DOOR LOCK ASSEMBLY (DOOR KEY LINKED LOCK AND UNLOCK SWITCH)


  1. for LHD:


    B184437E09


    Text in Illustration 
    *1
    		Component without harness connected
    (Front Door Lock LH)

    1. Remove the front door lock LH (Click here).

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

      Standard Resistance:
      Tester Connection
      		Condition
      		Specified Condition
      9 (L) - 7 (E)
      		Lock
      		Below 1 Ω
      9 (L) - 7 (E)
      		Off
      		10 kΩ or higher
      10 (UL) - 7 (E)
      		Unlock
      		Below 1 Ω
      10 (UL) - 7 (E)
      		Off
      		10 kΩ or higher



  1. for RHD (w/o Double Locking Function):


    B144104E04


    Text in Illustration 
    *1
    		Component without harness connected
    (Front Door Lock RH)

    1. Remove the front door lock RH (Click here).

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

      Standard Resistance:
      Tester Connection
      		Condition
      		Specified Condition
      5 (UL) - 8 (E)
      		Unlock
      		Below 1 Ω
      5 (UL) - 8 (E)
      		Off
      		10 kΩ or higher
      6 (L) - 8 (E)
      		Lock
      		Below 1 Ω
      6 (L) - 8 (E)
      		Off
      		10 kΩ or higher



  1. for RHD (w/ Double Locking Function):


    B144105E03


    Text in Illustration 
    *1
    		Component without harness connected
    (Front Door Lock RH)

    1. Remove the front door lock RH (Click here).

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

      Standard Resistance:
      Tester Connection
      		Condition
      		Specified Condition
      5 (UL) - 8 (E)
      		Unlock
      		Below 1 Ω
      5 (UL) - 8 (E)
      		Off
      		10 kΩ or higher
      6 (L) - 8 (E)
      		Lock
      		Below 1 Ω
      6 (L) - 8 (E)
      		Off
      		10 kΩ or higher



NG
REPLACE FRONT DOOR LOCK (Click here)
OK

REPLACE MAIN BODY ECU (Click here)