GSIC - Global Service Information Center

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

## DESCRIPTION

The door control relay drives the door lock motors according to switch signals from the door control switch of the power window regulator master switch and the driver side door key cylinder.
However, the driver side door key-linked lock / unlock function will not operate when the seat belt is fastened.

## WIRING DIAGRAM

## INSPECTION PROCEDURE

1.CHECK DOOR LOCK / UNLOCK OPERATION

1. Proceed to the next step according to the system listed in the table below.

   Symptom | Proceed to
   All doors cannot be locked / unlocked at once using door control switch on master switch (switch operation) | A
   All doors cannot be locked / unlocked at once using door key cylinder on driver side (key operation) | B
   Only one door cannot be locked / unlocked | C
   All symptoms listed above are present | D

| B |

Go to step 4

| C |

Go to step 7

| D |

Go to step 9

A |

2.INSPECT POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY (DOOR CONTROL SWITCH)

1. Measure the resistance of the door control switch.

   Standard resistance:
     Double cab:

     Tester Connection | Switch Condition | Specified Condition
     3 - 5 | Lock | Below 1 Ω
     3 - 5, 3 - 8 | OFF | 10 kΩ or higher
     3 - 8 | Unlock | Below 1 Ω

     LHD (Extra cab, Single cab):

     Tester Connection | Switch Condition | Specified Condition
     1 - 2 | Lock | Below 1 Ω
     1 - 2, 1 - 5 | OFF | 10 kΩ or higher
     1 - 5 | Unlock | Below 1 Ω

     RHD (Extra cab, Single cab):

     Tester Connection | Switch Condition | Specified Condition
     3 - 10 | Lock | Below 1 Ω
     3 - 10, 4- 10 | OFF | 10 kΩ or higher
     4 - 10 | Unlock | Below 1 Ω

| NG |

REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY

OK |

3.CHECK WIRE HARNESS (POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (INTEGRATION RELAY) AND BODY GROUND)

1. Disconnect the P4 switch connector.

1. Disconnect the 2A and 2D junction block connectors.

1. Measure the resistance of the wire harness side connectors.

   Standard resistance:
     Double cab:

     Tester Connection | Specified Condition
     P4-5 - 2A-4 (L1) | Below 1 Ω
     P4-8 - 2D-4 (UL1) | Below 1 Ω
     P4-3 - Body ground | Below 1 Ω
     P4-5 or 2A-4 (L1) - Body ground | 10 kΩ or higher
     P4-8 or 2D-4 (UL1) - Body ground | 10 kΩ or higher

     LHD (Extra cab, Single cab):

     Tester Connection | Specified Condition
     P4-2 - 2A-4 (L1) | Below 1 Ω
     P4-5 - 2D-4 (UL1) | Below 1 Ω
     P4-1 - Body ground | Below 1 Ω
     P4-2 or 2A-4 (L1) - Body ground | 10 kΩ or higher
     P4-5 or 2D-4 (UL1) - Body ground | 10 kΩ or higher

     RHD (Extra cab, Single cab):

     Tester Connection | Specified Condition
     P4-3 - 2A-4 (L1) | Below 1 Ω
     P4-4 - 2D-4 (UL1) | Below 1 Ω
     P4-10 - Body ground | Below 1 Ω
     P4-3 or 2A-4 (L1) - Body ground | 10 kΩ or higher
     P4-4 or 2D-4 (UL1) - Body ground | 10 kΩ or higher

| NG |

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK |

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (INTEGRATION RELAY)

4.INSPECT FRONT DOOR LOCK ASSEMBLY (DRIVER SIDE (DOOR LOCK MOTOR, DOOR LOCK AND UNLOCK SWITCH))

1. Apply battery voltage to the door lock and check operation of the door lock motor.

   OK:

     Measurement Condition | Specified Condition
     Battery positive (+) → Terminal 4 Battery negative (-) → Terminal 1 | Lock
     Battery positive (+) → Terminal 1 Battery negative (-) → Terminal 4 | Unlock

1. Measure the resistance of the door lock and unlock switch.

   Standard resistance:
     LHD:

     Tester Connection | Door Lock Condition | Specified Condition
     7 - 9 | Lock | Below 1 Ω
     7 - 9, 7 - 10 | OFF | 10 kΩ or higher
     7 - 10 | Unlock | Below 1 Ω

     RHD:

     Tester Connection | Door Lock Condition | Specified Condition
     6 - 8 | Lock | Below 1 Ω
     5 - 8, 6- 8 | OFF | 10 kΩ or higher
     5 - 8 | Unlock | Below 1 Ω

1. w/ Wireless door lock system:
   Measure the resistance of the position switch.

   Standard resistance:

     Tester Connection | Switch Condition | Specified Condition
     7 - 8 | Lock | 10 kΩ or higher
     7 - 8 | Unlock | Below 1 Ω

| NG |

REPLACE FRONT DOOR LOCK ASSEMBLY (DRIVER SIDE)

OK |

5.INSPECT FRONT SEAT INNER BELT ASSEMBLY (DRIVER SIDE)

1. Measure the resistance of the buckle switch.

   Standard resistance:

     Tester Connection | Condition | Specified Condition
     1 - 2 | Seat belt is unfastened | Below 1 Ω
     1 - 2 | Seat belt is fastened | 1 MΩ or higher

| NG |

REPLACE FRONT SEAT INNER BELT ASSEMBLY (DRIVER SIDE)

OK |

6.CHECK WIRE HARNESS (FRONT DOOR LOCK ASSEMBLY DRIVER SIDE - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (INTEGRATION RELAY) AND BODY GROUND)

1. Disconnect the D6 door lock connectors.

1. Disconnect the 2A, 2D and 2R junction block connector.

1. Measure the resistance of the wire harness side connectors.

   Standard resistance:
     LHD:

     Tester Connection | Condition | Specified Condition
     D6-1 - 2R-27 (ACT-) | Always | Below 1 Ω
     D6-4 - 2R-28 (ACT+) | Always | Below 1 Ω
     D6-10 - 2D-4 (UL1) | Always | Below 1 Ω
     D6-9 - 2A-4 (L1) | Always | Below 1 Ω
     D6-7 - Body ground | Driver seat belt is not fastened | Below 1 Ω
     D6-1 or 2R-27 (ACT-) - Body ground | Always | 10 kΩ or higher
     D6-4 or 2R-28 (ACT+) - Body ground | Always | 10 kΩ or higher
     D6-10 or 2D-4 (UL1) - Body ground | Always | 10 kΩ or higher
     D6-9 or 2A-4 (L1) - Body ground | Always | 10 kΩ or higher

     RHD:

     Tester Connection | Condition | Specified Condition
     D6-1 - 2R-27 (ACT-) | Always | Below 1 Ω
     D6-4 - 2R-28 (ACT+) | Always | Below 1 Ω
     D6-5 - 2D-4 (UL1) | Always | Below 1 Ω
     D6-6 - 2A-4 (L1) | Always | Below 1 Ω
     D6-7 - 2D-7 (LSWD)* | Always | Below 1 Ω
     D6-8 - Body ground | Driver seat belt is not fastened | Below 1 Ω
     D6-1 or 2R-27 (ACT-) - Body ground | Always | 10 kΩ or higher
     D6-4 or 2R-28 (ACT+) - Body ground | Always | 10 kΩ or higher
     D6-5 or 2D-4 (UL1) - Body ground | Always | 10 kΩ or higher
     D6-6 or 2A-4 (L1) - Body ground | Always | 10 kΩ or higher
     D6-7 or 2D-7 (LSWD) - Body ground* | Always | 10 k Ω or higher

   HINT:
     *: w/ Wireless door lock system

| NG |

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK |

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (INTEGRATION RELAY)

7.INSPECT DOOR LOCK ASSEMBLY (DRIVER SIDE, PASSENGER SIDE, REAR LH AND REAR RH)

1. Apply battery voltage to the door lock and check operation of the door lock motor.

   OK:

     Measurement Condition | Specified Condition
     Battery positive (+) → Terminal 4 Battery negative (-) → Terminal 1 | Lock
     Battery positive (+) → Terminal 1 Battery negative (-) → Terminal 4 | Unlock

| NG |

REPLACE DOOR LOCK ASSEMBLY

OK |

8.CHECK WIRE HARNESS (DOOR LOCK ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (INTEGRATION RELAY) AND BODY GROUND)

1. Disconnect the D6, D7, D8* or D9* door lock connector.

1. Disconnect the 2K or 2R junction block connector.

1. Measure the resistance of the wire harness side connectors.

   Standard resistance:
     LHD:

     Tester Connection | Specified Condition
     D6-4 - 2R-28 (ACT+) | Below 1 Ω
     D6-1 - 2R-27 (ACT-) | Below 1 Ω
     D7-4 - 2K-11 (ACT+) | Below 1 Ω
     D7-1 - 2K-10 (ACT-) | Below 1 Ω
     D8-4 - 2R-28 (ACT+)* | Below 1 Ω
     D8-1 - 2R-28 (ACT-)* | Below 1 Ω
     D9-4 - 2K-11 (ACT+)* | Below 1 Ω
     D9-1 - 2K-10 (ACT-)* | Below 1 Ω
     D6-4 or 2R-28 (ACT+) - Body ground | 10 kΩ or higher
     D6-1 or 2R-27 (ACT-) - Body ground | 10 kΩ or higher
     D7-4 or 2K-11 (ACT+) - Body ground | 10 kΩ or higher
     D7-1 or 2K-10 (ACT-) - Body ground | 10 kΩ or higher
     D8-4 or 2R-28 (ACT+) - Body ground* | 10 kΩ or higher
     D8-1 or 2R-27 (ACT-) - Body ground* | 10 kΩ or higher
     D9-4 or 2K-11 (ACT+) - Body ground* | 10 kΩ or higher
     D9-1 or 2K-10 (ACT-) - Body ground* | 10 kΩ or higher

     RHD:

     Tester Connection | Specified Condition
     D6-4 - 2R-28 (ACT+) | Below 1 Ω
     D6-1 - 2R-27 (ACT-) | Below 1 Ω
     D7-4 - 2K-11 (ACT+) | Below 1 Ω
     D7-1 - 2K-10 (ACT-) | Below 1 Ω
     D8-4 - 2K-11 (ACT+)* | Below 1 Ω
     D8-1 - 2K-10 (ACT-)* | Below 1 Ω
     D9-4 - 2R-28 (ACT+)* | Below 1 Ω
     D9-1 - 2R-27 (ACT-)* | Below 1 Ω
     D6-4 or 2R-28 (ACT+) - Body ground | 10 kΩ or higher
     D6-1 or 2R-27 (ACT-) - Body ground | 10 kΩ or higher
     D7-4 or 2K-11 (ACT+) - Body ground | 10 kΩ or higher
     D7-1 or 2K-10 (ACT-) - Body ground | 10 kΩ or higher
     D8-4 or 2K-11 (ACT+) - Body ground* | 10 kΩ or higher
     D8-1 or 2K-10 (ACT-) - Body ground* | 10 kΩ or higher
     D9-4 or 2R-28 (ACT+) - Body ground* | 10 kΩ or higher
     D9-1 or 2R-28 (ACT-) - Body ground* | 10 kΩ or higher

| NG |

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK |

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

9.INSPECT FUSE (ECU-B, DCC, DOOR)

1. Remove the ECU-B and DCC fuses from the engine room relay block.

1. Remove the DOOR fuse from the No. 3 relay block.

1. Measure the resistance of the fuses.

   Standard resistance:
     Below 1 Ω

| NG |

REPLACE FUSE

OK |

10.CHECK WIRE HARNESS (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (INTEGRATION RELAY) - BATTERY AND BODY GROUND)

1. Disconnect the 2D, 2H and 2L junction block connectors.

1. Measure the voltage and resistance of the wire harness side connectors.

   Standard voltage:

     Tester Connection | Specified Condition
     2L-12 (BECU) - Body ground | 10 to 14 V
     2H-4 (ALTB) - Body ground | 10 to 14 V

   Standard resistance:

     Tester Connection | Specified Condition
     2D-9 (GND) - Body ground | Below 1 Ω
     2D-18 (GND) - Body ground | Below 1 Ω

| NG |

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK |

11.CHECK WIRE HARNESS (POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (INTEGRATION RELAY) AND BODY GROUND)

1. Disconnect the P4 switch connector.

1. Disconnect the 2A and 2D junction block connectors.

1. Measure the resistance of the wire harness side connectors.

   Standard resistance:
     Double cab:

     Tester Connection | Specified Condition
     P4-5 - 2A-4 (L1) | Below 1 Ω
     P4-8 - 2D-4 (UL1) | Below 1 Ω
     P4-3 - Body ground | Below 1 Ω
     P4-5 or 2A-4 (L1) - Body ground | 10 kΩ or higher
     P4-8 or 2D-4 (UL1) - Body ground | 10 kΩ or higher

     LHD (Extra cab, Single cab):

     Tester Connection | Specified Condition
     P4-2 - 2A-4 (L1) | Below 1 Ω
     P4-5 - 2D-4 (UL1) | Below 1 Ω
     P4-1 - Body ground | Below 1 Ω
     P4-2 or 2A-4 (L1) - Body ground | 10 kΩ or higher
     P4-5 or 2D-4 (UL1) - Body ground | 10 kΩ or higher

     RHD (Extra cab, Single cab):

     Tester Connection | Specified Condition
     P4-3 - 2A-4 (L1) | Below 1 Ω
     P4-4 - 2D-4 (UL1) | Below 1 Ω
     P4-10 - Body ground | Below 1 Ω
     P4-3 or 2A-4 (L1) - Body ground | 10 kΩ or higher
     P4-4 or 2D-4 (UL1) - Body ground | 10 kΩ or higher

| NG |

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK |

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (INTEGRATION RELAY)