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ON-BOARD DIAGNOSTIC [ENGINE CONTROL SYSTEM (ZM)] 01–02A–134 DTC P1512 [ZM] A3U010201083W32 Diagnostic procedure DTC P1512 Variable tumble control system (VTCS) shutter valve close stuck DETECTION CONDITION • PCM monitors air flow amount is above 30 g/s {4.0 lb/min} when the following monitoring conditions are MONITORING CONDITIONS — Engine speed is above 3,000 rpm. °°°° C {176 °°°° F}. — Throttle valve opening angle is above 75%. Diagnostic support note • This is a continuous monitor (CCM). • MIL illuminates if PCM detects the above 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. POSSIBLE CAUSE • ECT sensor malfunction • MAF sensor malfunction • IAT sensor malfunction • EGR boost sensor malfunction • TP sensor malfunction • CKP sensor malfunction • VTCS solenoid valve malfunction • VTCS shutter valve malfunction (stuck closed) • VTCS shutter valve actuator malfunction (stuck closed). • Short to ground circuit between VTCS solenoid valve terminal B and PCM terminal 19 • Short to power circuit between VTCS solenoid valve terminal B and PCM terminal 19 • PCM malfunction STEP INSPECTION ACTION 1 CHECK 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 CHECK 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. 1712-1U-01G(01-02A).fm 134 ページ 2001年6月29日 金曜日 午後2時20分 |