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DTC P0121 TP SENSOR EC-1355 [VG33ER] C D E F G H I J K L M A EC 4. RETIGHTEN GROUND SCREWS 1. Turn ignition switch OFF. 2. Loosen and retighten engine ground screws. >> GO TO 5. 5. CHECK THROTTLE POSITION SENSOR POWER SUPPLY CIRCUIT 1. Disconnect throttle position sensor harness connector. 2. Turn ignition switch ON. 3. Check voltage between sensor terminal 3 and ground with CON- OK or NG OK >> GO TO 6. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 6. CHECK THROTTLE POSITION SENSOR GROUND CIRCUIT FOR OPEN AND SHORT 1. Turn ignition switch OFF. 2. Check harness continuity between throttle position sensor terminal 1 and engine ground. 3. Also check harness for short to power. OK or NG OK >> GO TO 8. NG >> GO TO 7. 7. DETECT MALFUNCTIONING PART Check the harness for open or short between ECM and throttle position sensor. >> Repair open circuit or short to power in harness or connectors. BBIA0418E AEC638A Voltage: Approximately 5V SEF630W Continuity should exist. |