#
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. (See IDLE SWITCH INSPECTION [MZR-CD (RF Turbo)].) • Is there any malfunction? | Yes | Replace idle switch, go to Step 7. (See ACCELERATOR PEDAL COMPONENT DISASSEMBLY/ASSEMBLY [MZR-CD (RF Turbo)].)
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. (See PCM REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)
No | Go to next step.
8 | VERIFY AFTER REPAIR PROCEDURE • Perform "After Repair Procedure". (See AFTER REPAIR PROCEDURE [MZR-CD (RF Turbo)].) • Is there any DTC present? | Yes | Go to applicable DTC inspection. (See DTC TABLE [MZR-CD (RF Turbo)].)
No | Troubleshooting completed.