Lexus IS250 IS220d GSE20 ALE20 - DOOR LOCK
INSPECT FRONT DOOR LOCK ASSEMBLY (DOOR LOCK MOTOR)
CHECK WIRE HARNESS (FRONT DOOR LOCK ASSEMBLY - MAIN BODY ECU RH)
POWER DOOR LOCK CONTROL SYSTEM - Driver Side Door Lock Motor Circuit
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 3Lock Battery positive (+) → Terminal 3
Battery negative (-) → Terminal 4Unlock
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
*1: w/ Double locking system
*2: w/o Double locking system
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| OK | |
| 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
*1: LHD Models
*2: RHD Models and w/ Double locking system
*2: RHD Models and w/o Double locking system
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| OK | ||
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