DTC P0123: TP Sensor Circuit High Voltage Turn the ignition switch ON (II). Check the TP SENSOR in the DATA LIST with the HDS. Is there about 0.5 V when the throttle is fully closed and about 4.5 V when the throttle is fully opened?
YES | - | Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the TP sensor and the ECM/PCM.■
NO | - | Go to Step 3 .
Turn the ignition switch OFF. Disconnect the TP sensor 3P connector. Turn the ignition switch ON (II). At wire harness side, measure voltage between TP sensor 3P connector terminals No. 1 and No. 3. Is there about 5 V?
YES | - | Go to Step 8 .
NO | - | Go to Step 7 .