DTC P0507: Idle Control System RPM Higher Than Expected
- Turn the ignition switch ON (II).
- Clear the DTC with the HDS.
- Start the engine. Hold the engine speed at 3,000 RPM (min-1 ) without load (in Park or neutral) until the radiator fan comes on, then let it idle for at least 20 seconds.
- Monitor the OBD STATUS for DTC P0507 in the DTCs MENU with the HDS.
Does the screen indicate FAILED?
YES -Go to step 5.
NO -If the screen indicates PASSED, intermittent failure, the system is OK at this time. If the screen indicates EXECUTING, keep idling until a result comes on. If the screen indicates OUT OF CONDITION, recheck with different load conditions (electrical, A/C, gear position, etc.), then go to step 3.
- Check for vacuum leaks at these parts:
- PCV valve
- PCV hose
- EVAP canister purge valve
- Throttle body
- Intake manifold
- Brake booster hose
- Brake booster
Are there any leaks?
YES -Repair or replace the leaking part(s), then go to step 6.
NO -Go to step 6.
- Turn the ignition switch ON (II).
- Reset the ECM/PCM with the HDS.
- Do the ECM/PCM idle learn procedure (see ECM/PCM IDLE LEARN PROCEDURE ).
- Start the engine. Hold the engine speed at 3,000 RPM (min-1 ) without load (in Park or neutral) until the radiator fan comes on, then let it idle for at least 20 seconds.
- Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0507 indicated?
YES -Go to step 12.
NO -Go to step 11.
- Monitor the OBD STATUS for DTC P0507 in the DTCs MENU with the HDS.
Does the screen indicate PASSED?
YES -Troubleshooting is complete. If any other Temporary DTCs or DTCs were indicated in step 10, go to the INDICATED DTC'S TROUBLESHOOTING .
NO -If the screen indicates FAILED, check for poor connections or loose terminals at the throttle body and the ECM/PCM, then go to step 1. If the screen indicates EXECUTING, keep idling until a result comes on. If the screen indicates OUT OF CONDITION, recheck with different load conditions (turn on the headlights, blower motor, or A/C; change the gear position, etc.), then go to step 9.
- Update the ECM/PCM if it does not have the latest software (see UPDATING THE ECM/PCM ), or substitute a known- good ECM/PCM (see SUBSTITUTING THE ECM/PCM ).
- Start the engine. Hold the engine speed at 3,000 RPM (min-1 ) without load (in Park or neutral) until the radiator fan comes on, then let it idle.
- Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0507 indicated?
YES -Check for poor connections or loose terminals at the throttle body and the ECM/PCM. If the ECM/PCM was updated, substitute a known- good ECM/PCM (see SUBSTITUTING THE ECM/PCM ), then go to step 13. If the ECM/PCM was substituted, go to step 1.
NO -Go to step 15.
- Monitor the OBD STATUS for DTC P0507 in the DTCs MENU with the HDS.
Does the screen indicate PASSED?
YES -If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, replace the original ECM/PCM (see ECM/PCM REPLACEMENT ). If any other Temporary DTCs or DTCs were indicated in step 14, go to the INDICATED DTC'S TROUBLESHOOTING .
NO -If the screen indicates FAILED, check for poor connections or loose terminals at the throttle body and the ECM/PCM. If the ECM/PCM was updated, substitute a known-good ECM/PCM (see SUBSTITUTING THE ECM/PCM ), then go to step 13. If the ECM/PCM was substituted, go to step 1. If the screen indicates EXECUTING, keep idling until a result comes on. If the screen indicates OUT OF CONDITION, go to step 13.