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ON-BOARD DIAGNOSTIC [ENGINE CONTROL SYSTEM (FS)] 01–02B–64 Diagnostic procedure End Of Sie DTC P0140 [FS] A3U010201084W26 STEP INSPECTION ACTION 1 VERIFY FREEZE FRAME DATA HAS BEEN • Has FREEZE FRAME DATA been recorded? Yes Go to next step. No Record FREEZE FRAME DATA on repair order, then go to 2 VERIFY RELATED REPAIR INFORMATION • Check for related Service Bulletins availability. • Is any related repair information available? Yes Perform repair or diagnosis according to available repair information. • If vehicle is not repaired, go to next step. No Go to next step. 3 VERIFY RELATED PENDING OR STORED • Turn ignition key to OFF, then Start engine. • Verify pending codes or stored DTCs using • Is other DTC present? Yes Go to appropriate DTC troubleshooting procedures. (See 01–02B–15 DTC TABLE [FS].) No Go to next step. 4 IDENTIFY TRIGGER DTC FOR FREEZE FRAME • Is DTC P0138 on FREEZE FRAME DATA? Yes Go to next step. No Go to troubleshooting procedures for DTC on FREEZE 5 INSPECT HO2S (REAR) SIGNAL CIRCUIT FOR • Turn ignition key to OFF. • Disconnect HO2S (rear) connector. • Turn ignition key to ON (Engine OFF). • Measure voltage between HO2S (rear) • Is any voltage reading? Yes Replace short to power supply circuit, then go to Step 7. No Go to next step. 6 VERIFY CURRENT INPUT SIGNAL STATUS • Start engine. • Access O2S12 PID using WDS or equivalent. • Verify PID while racing engine at least 10 • Does PID reading stay above 0.45 V? Yes Replace HO2S (rear), then go to next step. No Go to next step. 7 VERIFY TROUBLESHOOTING OF DTC P0138 • Make sure to reconnect all disconnected • Turn ignition key to ON (Engine OFF). • Clear DTC from memory using WDS or • Run OBD-II DRIVE MODE 1 and 3. • Is PENDING CODE of same DTC present? Yes Replace PCM, then go to next step. No Go to next step. 8 VERIFY AFTER REPAIR PROCEDURE • Perform “After Repair Procedure”. • Is there any DTC present? Yes Go to applicable DTC inspection. (See 01–02B–15 DTC TABLE [FS].) No Troubleshooting completed. DTC P0140 HO2S (rear) circuit no activity detected DETECTION CONDITION • PCM monitors input voltage from HO2S (rear) when the following monitoring conditions are met. If input MONITORING CONDITIONS — Drive mode 3 • Engine speed is above 1,500 rpm. • Engine coolant temperature is above 70 °°°° C {158 °°°° F}. Diagnostic support note • This is a continuous monitor (CCM). • MIL illuminates if PCM detects the above malfunction condition in two consecutive drive cycles. • PENDING CODE is available if PCM detects the above malfunction condition during first drive cycle. • FREEZE FRAME DATA is available. • DTC is stored in PCM memory. 1712-1U-01G(01-02B).fm 64 ページ 2001年6月29日 金曜日 午後3時24分 |