P1192
DTC P1192: FTP Sensor Circuit Low Voltage1. Reset the PCM.
2. Start the engine.
Is DTC P1192 indicated?
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 at the PCM.
3. Turn the ignition switch OFF.
4. Disconnect PCM connector E (31P).
5. Disconnect the FTP sensor 3P connector.
6. Check for continuity between FTP sensor 3P connector terminal No.3 and body ground.
Is there continuity?
YES - Repair short in the wire between PCM (E19) and FTP sensor.
NO - Go to step 7.
7. Reconnect PCM connector E (31P).
8. Turn the ignition switch ON (II).
9. Measure voltage between FTP sensor 3P connector terminals No.1 and No.2.
Is there about 5 V?
YES - Go to step 14.
NO - Go to step 10.
10. Turn the ignition switch OFF.
11. Disconnect PCM connector E (31P).
12. Connect the PCM connector terminal E5 to body ground with a jumper wire.
13. Check for continuity between FTP sensor 3P connector terminal No.2 and body ground.
Is there continuity?
YES - Update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck.
If the symptom/indication goes away with a known-good PCM, replace the original PCM.
NO - Repair open in the wire between PCM (E5) and FTP sensor.
14. Substitute a known-good FTP sensor and recheck.
Is DTC P1192 indicated?
YES - Update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck.
If the symptom/indication goes away with a known-good PCM, replace the original PCM.
NO - Replace the original FTP sensor.