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P0223-THROTTLE POSITION SENSOR 2 CIRCUIT HIGH (CONTINUED) For the Engine circuit diagram (Refer to 9 - ENGINE - SCHEMATICS AND DIAGRAMS). For a complete wiring diagram Refer to Section 8W. • When Monitored: • Set Condition: Possible Causes (K122) TP SENSOR NO.2 SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE (K122) TP SENSOR NO.2 SIGNAL CIRCUIT SHORTED TO THE (F855) 5-VOLT SUPPLY CIRCUIT (K922) SENSOR RETURN CIRCUIT OPEN 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: If a 5-Volt supply DTC has also set, diagnose the 5-Volt DTC before continuing. With a scan tool, read DTCs. Is the DTC active at this time? Yes >> Go To 2 No >> Go To 7 2. THROTTLE POSITION SENSOR Turn the ignition off. Disconnect the Throttle Body Assembly harness connector. Ignition on, engine not running. With the scan tool monitor the TP Sensor No.2 voltage. Is the voltage below 0.5 volt? Yes >> Disconnect the Battery when replacing the Throttle Body Assembly. Replace the Throttle Body Assem- bly. After installation is complete, with the scan tool select the ETC RELEARN function. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) No >> Go To 3 HB ENGINE ELECTRICAL DIAGNOSTICS 9 - 303 |