P1192

DTC Troubleshooting: P1192

DTC P1192: FTP Sensor Circuit Low Voltage

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information. Initial Inspection and Diagnostic Overview

1. Turn the ignition switch to ON (II).

2. Check the FTP SENSOR in the DATA LIST with the HDS.

Is there about 0.23 V or less?
YES - Go to step 3.

NO - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the FTP sensor and the PCM.


3. Turn the ignition switch to LOCK (0).

4. Disconnect the FTP sensor 3P connector.

5. Turn the ignition switch to ON (II).

6. Check the FTP SENSOR in the DATA LIST with the HDS.

Is there about 0.23 V or less?
YES - Go to step 8.

NO - Go to step 7.


7. Measure the voltage between FTP sensor 3P connector terminals No. 1 and No. 2.

Is there about 5 V?
YES - Go to step 17.

NO - Go to step 12.






8. Turn the ignition switch to LOCK (0).

9. Jump the SCS line with the HDS.

10. Disconnect PCM connector A (44P).

11. Check for continuity between FTP sensor 3P connector terminal No. 3 and body ground.

Is there continuity?
YES - Repair short in the wire between the PCM (A26) and the FTP sensor, then go to step 19.

NO - Go to step 24.






12. Turn the ignition switch to LOCK (0).

13. Jump the SCS line with the HDS.

14. Disconnect PCM connector A (44P).

15. Connect FTP sensor 3P connector terminal No. 2 to body ground with a jumper wire.






16. Check for continuity between PCM connector terminal A19 and body ground.

Is there continuity?
YES - Go to step 24.

NO - Repair open in the wire between the PCM (A19) and the FTP sensor, then go to step 19.






17. Turn the ignition switch to LOCK (0).

18. Replace the FTP sensor. Service and Repair

19. Reconnect all connectors.

20. Turn the ignition switch to ON (II).

21. Reset the PCM with the HDS.

22. Do the PCM idle learn procedure. ECM/PCM Idle Learn Procedure

23. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P1192 indicated?
YES - Check for poor connections or loose terminals at the FTP sensor and the PCM, then go to step 1.

NO - Troubleshooting is complete. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.


24. Reconnect all connectors.

25. Update the PCM if it does not have the latest software, PCM Update or substitute a known-good PCM. Initial Inspection and Diagnostic Overview

26. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P1192 indicated?
YES - Check for poor connections or loose terminals at the FTP sensor and the PCM. If the PCM was updated, substitute a known-good PCM, Initial Inspection and Diagnostic Overview then recheck. If the PCM was substituted, go to step 1.

NO - If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM. Service and Repair If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.