Diagnosis Procedure

PEDAL ADJUSTING SWITCH


Description

Pedal adjusting switch is on the instrument panel. The operation signal is input to the driver seat control unit when the pedal adjusting switch is operated. The pedal adjusting switch signal is sent to the automatic drive positioner control unit via UART communication.





PEDAL ADJUSTING SWITCH


Diagnosis Procedure

1. CHECK PEDAL ADJUSTING SWITCH SIGNAL





1. Turn ignition switch OFF.
2. Check voltage between driver seat control unit harness connector and ground.





Is the inspection result normal?
YES - GO TO 5
NO - GO TO 2
2. CHECK PEDAL ADJUSTING SWITCH CIRCUIT





1. Disconnect driver seat control unit and pedal adjusting switch.
2. Check continuity between driver seat control unit harness connector and pedal adjusting switch harness connector.





3. Check continuity between driver seat control unit harness connector and ground.





Is the inspection result normal?
YES - GO TO 3
NO - Repair or replace harness.
3. CHECK DRIVER SEAT CONTROL UNIT OUTPUT





1. Connect the driver seat control unit.
2. Turn ignition switch OFF.
3. Check voltage between driver seat control unit harness connector and ground.





Is the inspection result normal?
YES - GO TO 4
NO - Replace driver seat control unit. Refer to Driver Seat Control Unit.
4. CHECK PEDAL ADJUSTING SWITCH
Refer to Component Inspection.
Is the inspection result normal?
YES - GO TO 5
NO - Replace pedal adjusting switch. Refer to .
5. CHECK PEDAL ADJUSTING SWITCH GROUND CIRCUIT





Check continuity between pedal adjusting switch connector M96 terminal 1 and ground.

1 - Ground : Continuity should exist.

Is the inspection result normal?
YES - GO TO 6
NO - Repair or replace harness.
6. CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident.
Is the inspection result normal?
YES - Replace automatic drive positioner control unit. Refer to Automatic Drive Positioner Control Unit.
NO - Repair or replace the malfunctioning part.