GSIC - Global Service Information Center

# POWER DOOR LOCK CONTROL SYSTEM > TERMINALS OF ECU

CHECK INSTRUMENT PANEL JUNCTION BLOCK (INTEGRATION RELAY)

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

2. Measure the voltage and resistance of the wire harness side connector.

   Symbols (Terminal No.) | Wiring Color | Terminal Description | Condition | Specified Condition
   BECU (2L-12) - Body ground | L - Body ground | +B (BECU) power supply | Always | 10 to 14 V
   ALTB (2H-4) - Body ground | LG - Body ground | +B (power system, generator system) power supply | Always | 10 to 14 V
   GND (2D-9, 18) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω
   L1 (2A-4) - Body ground | L - Body ground | Door control switch lock input | Door control switch OFF | 10 kΩ or higher
   L1 (2A-4) - Body ground | L - Body ground | Door control switch lock input | Door control switch LOCK | Below 1 Ω
   UL1 (2D-4) - Body ground | L-W - Body ground | Door control switch unlock input | Door control switch OFF | 10 kΩ or higher
   UL1 (2D-4) - Body ground | L-W - Body ground | Door control switch unlock input | Door control switch UNLOCK | Below 1 Ω

   1. If the result is not as specified, there may be a malfunction on the wire harness side.

3. Reconnect the 2A, 2D, 2H and 2L junction block connectors.

4. Measure the voltage of the connectors.

Symbols (Terminal No.) | Wiring Color | Terminal Description | Condition | Specified Condition
ACT+ (2R-28) - Body ground | L - Body ground | Door lock motor LOCK drive output (driver door and rear LH door*1 or rear RH door*2) | Door control switch or driver door key cylinder OFF | Below 1 V
ACT+ (2R-28) - Body ground | L - Body ground | Door lock motor LOCK drive output (driver door and rear LH door*1 or rear RH door*2) | Door control switch or driver door key cylinder LOCK | 10 to 14 V
ACT+ (2K-11) - Body ground | L - Body ground | Door lock motor LOCK drive output (passenger door and rear RH door*1 or rear LH door*2) | Door control switch or driver door key cylinder OFF | Below 1 V
ACT+ (2K-11) - Body ground | L - Body ground | Door lock motor LOCK drive output (passenger door and rear RH door*1 or rear LH door*2) | Door control switch or driver door key cylinder LOCK | 10 to 14 V
ACT- (2R-27) - Body ground | L-Y - Body ground | Door lock motor UNLOCK drive output (driver door and rear LH door*1 or rear RH door*2) | Door control switch or driver door key cylinder OFF | Below 1 V
ACT- (2R-27) - Body ground | L-Y - Body ground | Door lock motor UNLOCK drive output (driver door and rear LH door*1 or rear RH door*2) | Door control switch or driver door key cylinder UNLOCK | 10 to 14 V
ACT- (2K-10) - Body ground | L-Y - Body ground | Door lock motor UNLOCK drive output (passenger door and rear RH door*1 or rear LH door*2) | Door control switch or driver door key cylinder OFF | Below 1 V
ACT- (2K-10) - Body ground | L-Y - Body ground | Door lock motor UNLOCK drive output (passenger door and rear RH door*1 or rear LH door*2) | Door control switch or driver door key cylinder UNLOCK | 10 to 14 V
DCTY (2O-27) - Body ground | R-B - Body ground | Driver side courtesy switch input | Driver side door closed | Below 1 V
DCTY (2O-27) - Body ground | R-B - Body ground | Driver side courtesy switch input | Driver side door open | 10 to 14 V

HINT:

  *1: LHD (Double cab)

  *2: RHD (Double cab)

1. If the result is not as specified, the junction block relay (integration relay) may have a malfunction.