Driver Side Door Lock Motor Circuit
Circuit diagnosis
DESCRIPTION
The driver's door lock motor is built into the driver's door lock assembly.The main body ECU RH controls the driver's door lock motor to lock/unlock the driver's door. This ECU applies current from terminal ACT+ to terminal ACTD to operate the motor to lock the door. It reverses the direction of the current flow to operate the motor to unlock the door.
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1. INSPECT FRONT DOOR LOCK ASSEMBLY (DOOR LOCK MOTOR) |
LHD Models:
Remove the front door lock assembly LH.
Apply battery voltage and check operation of the door lock motor.
- OK:
Measurement Condition
Specified Condition
Battery positive (+) → Terminal 4
Battery negative (-) → Terminal 3
Lock
Battery positive (+) → Terminal 3
Battery negative (-) → Terminal 4
Unlock
RHD Models:
Remove the front door lock assembly RH.
Apply battery voltage and check operation of the door lock motor.
- OK:
Measurement Condition
Specified Condition
Battery positive (+) → Terminal 2
Battery negative (-) → Terminal 1 (*1)
Lock
Battery positive (+) → Terminal 1
Battery negative (-) → Terminal 2 (*1)
Unlock
Battery positive (+) → Terminal 4
Battery negative (-) → Terminal 1 (*2)
Lock
Battery positive (+) → Terminal 1
Battery negative (-) → Terminal 4 (*2)
Unlock
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| OK | |
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| 2. CHECK WIRE HARNESS (FRONT DOOR LOCK ASSEMBLY - MAIN BODY ECU RH) |
Disconnect the front door lock assembly connector.
Disconnect the ECU (cowl side J/B RH) connector.
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Tester Connection
(Symbols)
Condition
Specified Condition
M2-4 (L) - RJ-9 (*1)
Always
Below 1 Ω
M2-3 (UL) - P1-4 (ACTD) (*1)
Always
Below 1 Ω
L8-2 (L) - RJ-9 (*2)
Always
Below 1 Ω
L8-1 (UL) - P1-4 (ACTD) (*2)
Always
Below 1 Ω
L8-2 (L) - RJ-9 (*3)
Always
Below 1 Ω
L8-1 (UL) - P1-4 (ACTD) (*3)
Always
Below 1 Ω
RJ-9 - Body ground
Always
10 kΩ or higher
P1-4 (ACTD) - Body ground
Always
10 kΩ or higher
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| OK | ||
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