DTC P084F-29: Park/Neutral Switch Output Circuit - Signal signal invalid: Action
- Prioritized steps to perform:
- Check startup battery charge and condition and record values
- Using the Jaguar Land Rover approved diagnostic equipment, read all DTCs and investigate any DTCs relating to startup battery voltage supply. Rectify as required
- Check the security and integrity of the transmission ground point and check the resistance from the transmission ground to the vehicle ground. Rectify as required
- Check the transmission VBATT and IGN circuits to confirm an appropriate voltage supply to transmission connector. Rectify as required
- Refer to the electrical circuit diagrams and check the P-SIGNAL circuit at the transmission connector for short circuit to ground, short circuit to power and rectify as required
- Check the transmission connector(s) for damage and/or water ingress and rectify as required
- Check the transmission control switch connector for damage and/or water ingress and rectify as required
- Compare the voltage output of the P-SIGNAL circuit with the engine running and the transmission set in and out of Park
- Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and retest
- If the fault persists, raise a Technical Assist (TA) for further support