POWER DOOR LOCK CONTROL SYSTEM All Doors LOCK/UNLOCK Functions do not Operate Via Master Switch, Driver Side Door Key Cylinder

DESCRIPTION

The main body ECU receives switch signals from the door control switches and driver door key cylinder, and activates the door lock motor on each door according to these signals.

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. INSPECT FUSE (DR LOCK)

   
   

   1. Remove the DR LOCK fuse from the passenger side junction block assembly*1 or driver side junction block assembly*2.

      
      

      • *1: for RHD

      • *2: for LHD

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

      Standard Resistance
      Tester Connection Condition Specified Condition DR LOCK fuse Always Below 1 Ω

   
   

   NG

   REPLACE FUSE

   OK

2. CHECK DOOR LOCK OPERATION (ALL DOORS LOCK / UNLOCK)

   
   

   1. All doors can be locked/unlocked at the same time using the following:

      
      

      • Door control switch on the driver side (switch operation)

      • Door key cylinder linked with door lock on the driver side (key operation)

   2. Proceed to the next step according to symptom if all the doors cannot be locked/unlocked at the same time.

      Result
      Result Proceed to All doors cannot be locked/unlocked at the same time by using door control switch. A All doors cannot be locked/unlocked at the same time by using driver door key cylinder. B

   
   

   B

   READ VALUE USING INTELLIGENT TESTER (DOOR KEY LINKED LOCK AND UNLOCK SWITCH (DRIVER SIDE)) Click here

   A

3. READ VALUE USING INTELLIGENT TESTER (DOOR CONTROL SWITCH (DRIVER SIDE))

   
   

   1. Connect the intelligent tester to the DLC3.

   2. Turn the engine switch on (IG).

   3. Turn the intelligent tester on.

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

   5. Read the Data List according to the display on the intelligent tester.

      Master Switch (Multiplex Network Master Switch Assembly)

      Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
      Door Lock Switch Status	Driver side door control switch lock signal/ON or OFF	ON: Door control switch is pushed to lock position OFF: Door control switch is not pushed to lock position	-
      Door Unlock Switch Status	Driver side door control switch unlock signal/ON or OFF	ON: Door control switch is pushed to unlock position OFF: Door control switch is not pushed to unlock position	-

      OK
      The intelligent tester indicates ON or OFF according to the switch operation as shown in the table.

   
   

   NG

   REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY Click here

   OK

   REPLACE MAIN BODY ECU Click here

4. READ VALUE USING INTELLIGENT TESTER (DOOR KEY LINKED LOCK AND UNLOCK SWITCH (DRIVER SIDE))

   
   

   1. Connect the intelligent tester to the DLC3.

   2. Turn the engine switch on (IG).

   3. Turn the intelligent tester on.

   4. Enter the following menus: Body / Main Body / Data List.

   5. Read the Data List according to the display on the intelligent tester.

      Main Body (Main Body ECU)

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

      OK
      The intelligent tester indicates ON or OFF according to the switch operation as shown in the table.

   
   

   NG

   INSPECT FRONT DOOR LOCK ASSEMBLY (DRIVER SIDE) Click here

   OK

   REPLACE MAIN BODY ECU Click here

5. INSPECT FRONT DOOR LOCK ASSEMBLY (DRIVER SIDE)

   
   

   1. Remove the front door lock assembly (for Driver Side) Click here.

   2. 

      Text in Illustration

      *a	Component without harness connected Front Door Lock Assembly (for Driver Side)
      *1	Lock
      *2	Unlock

      for RHD:

      
      

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

         Standard Resistance
         Tester Connection Switch Condition Specified Condition 6 (L) - 8(E) ON (Door lock set to LOCK) Below 1 Ω 6 (L) - 8(E) 5 (UL) - 8(E) OFF (Free) 10 kΩ or higher 5 (UL) - 8(E) ON (Door lock set to UNLOCK) Below 1 Ω

   3. 

      Text in Illustration

      *a	Component without harness connected Front Door Lock Assembly (for Driver Side)
      *1	Lock
      *2	Unlock

      for LHD:

      
      

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

         Standard Resistance
         Tester Connection Switch Condition Specified Condition 9 (L) - 7(E) ON (Door lock set to LOCK) Below 1 Ω 9 (L) - 7(E) 10 (UL) - 7(E) OFF (Free) 10 kΩ or higher 10 (UL) - 7(E) ON (Door lock set to UNLOCK) Below 1 Ω

   
   

   NG

   REPLACE FRONT DOOR LOCK ASSEMBLY (DRIVER SIDE) Click here

   OK

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

   
   

   1. for RHD:

      
      

      1. Disconnect the 4A junction block connector.

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

         Standard Resistance
         Tester Connection Condition Specified Condition I5-6 (L) - 4A-11 (L2) Always Below 1 Ω I5-5 (UL) - 4A-25 (UL2) Always Below 1 Ω I5-8 (E) - Body ground Always Below 1 Ω I5-6 (L) - Body ground Always 10 kΩ or higher I5-5 (UL) - Body ground Always 10 kΩ or higher

   2. for LHD:

      
      

      1. Disconnect the 4A junction block connector.

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

         Standard Resistance
         Tester Connection Condition Specified Condition J5-9 (L) - 4A-11 (L2) Always Below 1 Ω J5-10 (UL) - 4A-25 (UL2) Always Below 1 Ω J5-7 (E) - Body ground Always Below 1 Ω J5-9 (L) - Body ground Always 10 kΩ or higher J5-10 (UL) - Body ground Always 10 kΩ or higher

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

   REPLACE MAIN BODY ECU Click here