P1193
DTC P1193: FTP Sensor Circuit High Voltage1. Reset the PCM.
2. Start the engine.
Is DTC P1193 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 the FTP sensor 3P connector.
5. Check for continuity between FTP sensor 3P connector terminal No.1 and body ground.
Is there continuity?
YES - Go to step 9.
NO - Go to step 6.
6. Disconnect PCM connector E (31P).
7. Connect the PCM connector terminal E4 to body ground with a jumper wire.
8. Check for continuity between FTP sensor 3P connector terminal No.1 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 (E4) and FTP sensor.
9. Turn the ignition switch ON (II).
10. Measure voltage between FTP sensor 3P connector terminal No.1 and No.3.
Is there about 5 V?
YES - Go to step 15.
NO - Go to step 11.
11. Turn the ignition switch OFF.
12. Disconnect PCM connector E (31P).
13. Connect the PCM connector terminal E19 to body ground with a jumper wire.
14. Check for continuity between FTP sensor 3P connector terminal No.3 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 (E19) and FTP sensor.
15. 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.