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• When Monitored: • Set Condition: Possible Causes RESISTANCE IN THE (K22) TP SENSOR NO.1 OR (K122) TP SENSOR NO.2 SIGNAL CIRCUIT RESISTANCE IN (F855) 5-VOLT SUPPLY CIRCUIT RESISTANCE IN THE (K922) SENSOR RETURN CIRCUIT (K22) TP SENSOR NO.1 SIGNAL CIRCUIT SHORTED TO (K122) TP SENSOR NO.2 SIGNAL CIRCUIT THROTTLE POSITION SENSOR/THROTTLE BODY PCM Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - Diagnostic Test 1. ACTIVE DTC NOTE: Diagnose any other TP Sensor DTC(s) before continuing. NOTE: The throttle plate should be free from binding and carbon build up, make sure the throttle plate is at NOTE: Inspect the engine for vacuum leaks, repair before continuing. Is the DTC active at this time? Yes >> Go To 2 No >> Go To 8 2. THROTTLE POSITION SENSOR Turn the ignition off. Connect the PCM harness connectors. Ignition on, engine not running. With a scan tool, monitor the TP Sensor No.1 and No.2 voltage. Connect a jumper wire between the (K922) Sensor Return circuit and NOTE: TP Sensor No.1 voltage should change from approximately NOTE: TP Sensor No.2 voltage should change from approximately Is the voltage reading within the listed specification when the Yes >> Replace the Throttle Body Assembly. Disconnect the Bat- tery when replacing the Throttle Body Assembly. After 9 - 88 ENGINE ELECTRICAL DIAGNOSTICS LX |