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ON-BOARD DIAGNOSTIC [ENGINE CONTROL SYSTEM (ZM)] 01–02A–42 End Of Sie DTC P0122 [ZM] A3U010201084W43 4 CLASSIFY ECT SENSOR OR HARNESS • Measure resistance between ECT sensor • Is resistance within 0.111—25.403 kilohms? Yes Go to next step. No Replace ECT sensor, then go to Step 10. 5 INSPECT ECT SENSOR SIGNAL CIRCUIT FOR • Turn ignition key to ON (Engine OFF). • Measure voltage between ECT sensor terminal • Is there voltage B+? Yes Repair or replace harness for short to power, then go to Step 10. No Go to next step. 6 INSPECT PCM CONNECTOR FOR POOR • Disconnect PCM connector. • Check for poor connection at terminals 38 and • Is there malfunction? Yes Repair or replace terminal, then go to Step 10. No Go to next step. 7 INSPECT ECT SENSOR SIGNAL CIRCUIT FOR • Connect breakout box with PCM disconnected. • Check for continuity between ECT sensor • Is there continuity? Yes Go to next step. No Repair or replace harness for open, then go to Step 10. 8 INSPECT ECT SENSOR GROUND CIRCUIT • Check for continuity between ECT sensor • Is there continuity? Yes Go to next step. No Repair or replace harness for open, then go to next step. 9 VERIFY TROUBLESHOOTING OF DTC P0118 • Make sure to reconnect all disconnected • Clear DTC from PCM memory using WDS or • Start engine. • Is same DTC present? Yes Replace PCM, then go to next step. No No concern is detected. Go to next step. 10 VERIFY AFTER REPAIR PROCEDURE • Perform “After Repair Procedure”. • Is there any DTC present? Yes Go to applicable DTC inspection. (See 01–02A–15 DTC TABLE [ZM].) No Troubleshooting completed. STEP INSPECTION ACTION DTC P0122 TP circuit low input DETECTION CONDITION • If PCM detects TP sensor voltage at PCM terminal 89 below 0.10 V after engine start, PCM determines Diagnostic support note • This is a continuous monitor (CCM). • MIL illuminates if PCM detects the above malfunction conditions during first drive cycle. Therefore, • FREEZE FRAME DATA is available. • DTC is stored in PCM memory. POSSIBLE CAUSE • TP sensor malfunction • Connector or terminal malfunction • Open circuit between TP sensor terminal C and PCM terminal 89 • Short to ground circuit between TP sensor terminal C and PCM terminal 89 • Open circuit between TP sensor terminal A and PCM terminal 90 • Short to ground circuit between TP sensor terminal A and PCM terminal 90 • PCM malfunction 1712-1U-01G(01-02A).fm 42 ページ 2001年6月29日 金曜日 午後2時20分 |