DTC P0510 [MZR-CD (RF Turbo)]

BME010200500W08

DTC P0510

Idle switch circuit malfunction

DETECTION CONDITION

• PCM monitors input voltage from idle switch while engine is running. If input voltage from idle switch is B+ when accelerator position sensor No.1 voltage is below 0.7 V, PCM determines idle switch circuit malfunction.

POSSIBLE CAUSE

• Idle switch malfunction
• Connector or terminal malfunction
• Open circuit in wiring between idle switch terminal B and GND
• Open circuit in wiring between idle switch terminal A and PCM terminal 31
• PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
VERIFY RELATED REPAIR INFORMATION AVAILABILITY
• Check for related Service Information availability.
• Is any related repair information available?
Yes
Perform repair or diagnosis according to available Service Information.
• If vehicle is not repaired, go to next step.
No
Go to next step.
2
INSPECT POOR CONNECTION OF IDLE SWITCH CONNECTOR
• Turn engine switch to OFF.
• Inspect for poor connection (damaged, pulled-out terminals, corrosion, etc.).
• Is there any malfunction?
Yes
Repair or replace suspected terminal, go to Step 7.
No
Go to next step.
3
INSPECT IDLE SWITCH GND CIRCUIT FOR OPEN
• Turn engine switch to OFF.
• Inspect continuity between idle switch terminal B and body GND.
• Is there continuity?
Yes
Go to next step.
No
Repair or replace harness for open, go to Step 7.
4
INSPECT IDLE SWITCH
• Inspect idle switch.
• Is there any malfunction?
Yes
Replace idle switch, go to Step 7.
No
Go to next step.
5
INSPECT POOR CONNECTION OF PCM CONNECTOR
• Turn engine switch to OFF.
• Inspect for poor connection (damaged, pulled-out terminals, corrosion, etc.).
• Is there any malfunction?
Yes
Repair or replace suspected terminal, go to Step 7.
No
Go to next step.
6
INSPECT IDLE SWITCH SIGNAL CIRCUIT FOR OPEN
• Turn engine switch to OFF.
• Inspect continuity between idle switch terminal A and PCM terminal 31.
• Is there continuity?
Yes
Go to next step.
No
Repair or replace harness for open, go to next step.
7
VERIFY TROUBLESHOOTING OF DTC P0510 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear DTC from PCM memory using WDS or equivalent.
• Start engine.
• Is same DTC present?
Yes
Replace PCM, go to next step.
No
Go to next step.
8
VERIFY AFTER REPAIR PROCEDURE
• Perform "After Repair Procedure".
• Is there any DTC present?
Yes
Go to applicable DTC inspection.
No
Troubleshooting completed.