DTC P0122: TP Sensor Circuit Low Voltage Turn the ignition switch ON (II). Check the throttle position with the scan tool. Is there about 10% or 0.5 V when the throttle is fully closed and about 90% or 4.5 V when the throttle is fully opened? YES - Intermittent failure, system is OK at this time. Check for poor connections or loose wires at the TP sensor and at 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). Measure voltage between the TP sensor 3P connector terminals No. 1 and No. 3. TP SENSOR 3P CONNECTOR Wire side of female terminals Is there about 5 V? YES - Go to step 7. NO - Go to step 14. Turn the ignition switch OFF.

At the sensor side, measure resistance between the TP sensor 3P connector terminals No. 1 and No. 3 with the throttle fully closed. TP SENSOR 3P CONNECTOR Terminal side of male terminals Is there about 0.5-0.9 k ohms? YES - Go to step 9. NO - Replace the throttle body. Measure resistance between the TP sensor 3P connector terminals No. 1 and No. 2 with the throttle fully closed. TP SENSOR 3P CONNECTOR Terminal side of male terminals Is there about 4.5k ohms? YES - Go to step 10. NO - Replace the throttle body. Disconnect ECM/PCM connector A (31P).