Note. Idle Switch is built into Throttle Position (TP) sensor and they share same harness connector.
Note. Before performing any diagnostic test, refer toWARNINGS, CAUTIONS and NOTES under DIAGNOSTIC TESTS .
Note. Testing individual components does not isolate shorts or opens. Perform all voltage tests using a Digital Volt-Ohmmeter Meter (DVOM) with a minimum 10-megohm input impedance, unless stated otherwise in test procedure. Use ohmmeter to isolate wiring harness shorts or opens.
Diagnostic Aids
Malfunction code enable criteria not available from manufacturer. Check for following possible problems
- Open or short between Idle Switch in TP sensor and Engine Control Module (ECM).
- Faulty Idle Switch in TP sensor.