After Warming Up, Idle Speed Drops When Steering Wheel Is Turned (MIL Works OK, No DTCs Set)

After warming up, idle speed drops when steering wheel is turned (MIL works OK, no DTCs set)

Diagnostic Procedure:

1. Do the PCM idle learn procedure. PCM Idle Learn Procedure

2. Troubleshoot the PSP switch signal circuit. PSP Switch Signal Circuit Troubleshooting

3. Do the carbon accumulation check. Testing and Inspection

Also check for:

- Power steering system problem