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ON-BOARD DIAGNOSTIC [AW6A-EL, AW6AX-EL] 05-02–21 05-02 Diagnostic procedure POSSIBLE CAUSE • VSS malfunction • Open circuit between VSS terminal B and TCM terminal B19 • Open circuit between VSS terminal A and TCM terminal B20 • Short to ground in wiring harness between VSS terminal B and TCM terminal B19 • Short to ground in wiring harness between VSS terminal A and TCM terminal B20 • Short to power in wiring harness between VSS terminal B and TCM terminal B19 • Short to power in wiring harness between VSS terminal A and TCM terminal B20 • Damaged connector between VSS and TCM • TCM malfunction STEP INSPECTION ACTION 1 VERIFY FREEZE FRAME DATA HAS BEEN • Has the FREEZE FRAME DATA been recorded? Yes Go to the next step. No Record the FREEZE FRAME DATA on the repair order, 2 VERIFY RELATED REPAIR INFORMATION • Verify related Service Bulletins and/or on-line repair information availability. • Is any related repair information available? Yes Perform repair or diagnosis according to the available • If the vehicle is not repaired, go to the next step. No Go to the next step. 3 INSPECT TERMINAL COUPLE COMPONENT • Turn the ignition switch to the LOCK position. • Remove the TCM. (See 05-17-25 TCM REMOVAL/ • Inspect for poor connection (such as damaged/ pulled-out pins, corrosion). • Are terminals normal? Yes Go to the next step. No Replace the couple component, then go to Step 8. DTC P0722 Vehicle speed sensor (VSS) circuit malfunction (open circuit/short circuit) B A B19 B20 A B VSS VSS WIRING HARNESS-SIDE CONNECTOR 7 6 3 4 5 5 3 7 6 TCM COUPLE COMPONENT CONNECTOR COUPLE COMPONENT B20 B19 (+) (-) 1871-1U-06B(05-02).fm 21 ページ 2006年3月15日 水曜日 午前11時18分 |