Diagnosis Procedure
Regarding Wiring Diagram information, refer to "WIRING DIAGRAM ".
- CHECK DTC
Check "Self diagnostic result" for BCM with CONSULT.
Are other DTCs detected?
YES: Check the DTC.
NO: GO TO 2
- CHECK PARK POSITION SWITCH SIGNAL
- Turn ignition switch ON.
- Select "DETENT SW" in "Data Monitor" mode with CONSULT.
- Check detention switch signal under the following condition.
Monitor item Condition Status DETENT SW A/T selector lever P position OFF Other than above ON Is the status normal?
YES: A/T shift selector (park position switch) circuit is OK.
NO: GO TO 3
- CHECK A/T SHIFT SELECTOR (PARK POSITION SWITCH) HARNESS
- Turn ignition switch OFF.
- Disconnect A/T shift selector and driver seat control unit.
- Check continuity between driver seat control unit connector B202 (A) terminal 21 and A/T shift selector connector M203 (B) terminal 6
6 - 21: Continuity should exist.
- Check continuity between driver seat control unit connector B202 (A) terminal 21 and ground.
21 - Ground: Continuity should not exist.
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Is the inspection result normal?
YES: GO TO 4
NO: Repair or replace harness.
- CHECK PARK POSITION SWITCH
Check continuity between A/T shift selector (park position switch) terminals as follows.
Terminals Condition Continuity 5 6 P position Yes Other than P position No Is the inspection result normal?
YES: GO TO 5
NO: Replace A/T shift selector. Refer to "A/T SHIFT SELECTOR REMOVAL AND INSTALLATION ".
- CHECK INTERMITTENT INCIDENT
Refer to "INTERMITTENT INCIDENT ".
Is the inspection result normal?
YES: Replace driver seat control unit. Refer to "REMOVAL AND INSTALLATION ".
NO: Repair or replace the malfunctioning part.