Diagnosis Procedure

TILT SWITCH


Description

ADP steering switch is equipped to the steering column. The operation signal is input to the automatic drive positioner control unit when the ADP steering switch is operated.




TILT SWITCH


Diagnosis Procedure

Regarding Wiring Diagram information, Automatic Drive Positioner Control Unit.
1. CHECK ADP STEERING SWITCH SIGNAL





1. Turn ignition switch OFF.
2. Check voltage between automatic drive positioner control unit connector and ground.





Is the inspection result normal?
YES - GO TO 4
NO - GO TO 2
2. CHECK ADP STEERING SWITCH HARNESS CONTINUITY





1. Disconnect automatic drive positioner control unit and ADP steering switch.
2. Check continuity between automatic drive positioner control unit connector M33 terminals 1, 17 and ADP steering switch connector M16 terminals 2, 3.

1 - 2 : Continuity should exist.
17 - 3 : Continuity should exist.

3. Check continuity between automatic drive positioner control unit connector M33 terminals 1, 17 and ground.

1 - Ground : Continuity should not exist.
17 - Ground : Continuity should not exist.

Is the inspection result normal?
YES - GO TO 3
NO - Repair or replace harness.
3. CHECK ADP STEERING SWITCH GROUND CIRCUIT





Check continuity between ADP steering switch connector M16 terminal 1 and ground.

1 - Ground : Continuity should exist.

Is the inspection result normal?
YES - Check the condition of the harness and connector.
NO - Replace or replace harness.
4. CHECK TILT SWITCH
Component Inspection.
Is the inspection result normal?
YES - GO TO 5
NO - Replace ADP steering switch. Service and Repair.
5. CHECK INTERMITTENT INCIDENT
Intermittent Incident.
Is the inspection result normal?
YES - Replace automatic drive positioner control unit. Removal and Replacement.
NO - Repair or replace the malfunctioning part.