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ON-BOARD DIAGNOSTIC [ENGINE CONTROL SYSTEM (FS)] 01–02B–36 Diagnostic procedure End Of Sie DTC P0112 [FS] A3U010201084W12 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 INSPECT IAT SENSOR CONNECTOR FOR • Turn ignition key to OFF. • Disconnect IAT sensor connector. • Check for poor connection (damaged/pulled- • Is there malfunction? Yes Repair or replace terminal, then go to Step 6. No Go to next step. 4 INSPECT IAT SENSOR • Measure resistance between IAT sensor • Is resistance below 550 ohms? Yes Replace IAT sensor, then go to Step 6. No Go to next step. 5 INSPECT PCM CONNECTOR FOR POOR • Disconnect PCM connector. • Check for poor connection at terminals 39 and • Is there malfunction? Yes Repair or replace terminal, then go to Step 6. No Go to next step. 6 VERIFY TROUBLESHOOTING OF DTC P0111 • Make sure to reconnect all disconnected • Clear DTC from PCM memory using WDS or • Start engine and run engine under FREEZE • Is PENDING CODE of same DTC present? Yes Replace PCM, then go to next step. No Go to next step. 7 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 P0112 IAT circuit low input DETECTION CONDITION • PCM monitors IAT sensor signal at PCM terminal 39. If voltage at PCM terminal 39 is below 0.16 V, PCM Diagnostic support note • This is a continuous monitor (CCM). • MIL illuminates if PCM detects the above malfunction condition during first drive cycle. Therefore, • FREEZE FRAME DATA is available. • DTC is stored in PCM memory. POSSIBLE CAUSE • IAT sensor malfunction • Short to ground circuit between IAT sensor terminal A and PCM terminal 39 • IAT signal and IAT ground circuits are shorted each other. • PCM malfunction 1712-1U-01G(01-02B).fm 36 ページ 2001年6月29日 金曜日 午後3時24分 |