Diagnostic Procedure

Verify Related Repair Information Availability - Turn ignition off. Connect scan tool to DLC-2. See Figure. Turn ignition on, engine off. Monitor for FREEZE FRAME DATA and ensure data has been recorded. Check service bulletins for repair information related to this DTC. If repair information is not available, go to next step. If repair information is available, perform diagnosis and repair as necessary. After repair, go to step 6.
Inspect HO2S (Front) Terminals - Turn ignition off. Disconnect front HO2S 4-pin harness connector. See Figure. Check for poor connection due to damaged, pulled-out pins, corrosion, etc. If connector terminals are okay, go to next step. If connector terminals are found faulty, repair or replace as necessary. After repair, go to step 6.
Inspect HO2S Heater (Front) - Measure resistance between front HO2S connector terminals "C" and "D". Resistance reading should be 5.0-6.8 ohms. If resistance reading is as specified, go to next step. If resistance reading is not a specified, replace front HO2S. After repair, go to step 6.
Inspect PCM Terminal - Disconnect PCM 24-pin harness connector. See Figure. Check for poor connection at terminal "3J" due to damaged, pulled-out pins, corrosion, etc. If connector terminals are okay, go to next step. If connector terminals are faulty, repair or replace as necessary. After repair, go to step 6.
Inspect HO2S (Front) Heater Control Circuit For Short To Power Circuit - Turn ignition on, engine off. Measure voltage between ground and front HO2S 4-pin harness connector terminal "D" (Black/Orange wire). Voltage should not be present. If voltage is not present, go to next step. If voltage is present, repair short circuit to voltage in Black/Orange wire between front HO2S 4-pin harness connector terminal "D" and PCM 24-pin harness connector terminal 3J". After repair, go to next step.
Verify Troubleshooting Of DTC P0032 Completed - Return vehicle to original condition. Using scan tool, clear DTCs from PCM memory. See CLEARING DIAGNOSTIC TROUBLE CODES under SELF-DIAGNOSTIC SYSTEM. Start engine and let idle until normal operating temperature is reached. Monitor for DTCs. If same DTC is not present, go to next step. If same DTC P0032 is present, replace PCM. For PCM removal and installation, see POWERTRAIN CONTROL MODULE under COMPUTERIZED ENGINE CONTROLS in REMOVAL, OVERHAUL & INSTALLATION article. After repair, go to next step.
Verify After Repair Procedure - Using scan tool, perform After Repair Procedure. See AFTER REPAIR PROCEDURE . If no other DTCs are present, testing is complete. If any other DTC is present, follow appropriate DTC diagnostic procedure. See DIAGNOSTIC TROUBLE CODE DEFINITIONS .