Diagnosis Procedure

PARK/NEUTRAL POSITION SWITCH CIRCUIT


Description

Park/neutral position switch signals is input to ECM. The signals are transmitted from ECM to ICC sensor integrated unit via CAN communication.
ICC sensor integrated unit performs the following controls via park/neutral position switch.
- Rejects any attempt to set ICC system when shift knob is set at neutral position.
- Cancels ICC system when shift knob is shifted to neutral position.




PARK/NEUTRAL POSITION SWITCH CIRCUIT


Diagnosis Procedure

1.CHECK FUSES
Check if any of the following fuses are blown:





Is the inspection result normal?
YES - GO TO 2.
NO - Replace the blown fuse after repairing the affected circuit if a fuse is blown.
2.CHECK PARK/NEUTRAL POSITION SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect the park/neutral position switch connector.
3. Turn ignition switch ON.
4. Check voltage between park/neutral position switch harness connector and ground.





Is the inspection result normal?
YES - GO TO 3.
NO - Repair the harnesses or connectors.
3.CHECK HARNESS BETWEEN PARK/NEUTRAL POSITION SWITCH AND ECM
1. Turn ignition switch OFF.
2. Disconnect the ECM connector.
3. Check for continuity between the park/neutral position switch harness connector and ECM harness connector.





Is the inspection result normal?
YES - GO TO 4.
NO - Repair the harnesses or connectors.
4.CHECK PARK/NEUTRAL POSITION SWITCH
Check the park/neutral position switch. Component Inspection.
Is the inspection result normal?
YES - GO TO 5.
NO - Replace the park/neutral position switch.
5.PERFORM SELF-DIAGNOSIS OF ECM
1. Connect connectors of park/neutral position switch and ECM.
2. Perform "All DTC Reading".
3. Check if any DTC is detected in "Self Diagnostic Result" of "ENGINE".
Is any DTC detected?
YES - Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Testing and Inspection.
NO - Replace the ICC sensor integrated unit. Exploded View.