P1188
DTC P1188: FTT Sensor Circuit High Voltage1. Reset the PCM.
2. Turn the ignition switch ON (II).
Is DTC P1183 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 FTT sensor and at the PCM.
3. Turn the ignition switch OFF.
4. Disconnect the FTT sensor 2P connector.
5. Measure resistance between FTT sensor 2P connector terminals No.1 and No.2.
Is the resistance OK (see the graph)?
YES - Go to step 6.
NO - Replace the FTT sensor.
6. Turn the ignition switch OFF.
7. Disconnect PCM connector E (31 P).
8. Connect FTT sensor 2P connector terminals No.1 and No.2 with a jumper wire.
9. Check for continuity between PCM connector terminals E4 and E21.
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 - Go to step 10.
10. Connect FTT sensor 2P connector terminal No.1 to body ground with a jumper wire.
11. Check for continuity between PCM terminal E4 and body ground.
Is there continuity?
YES - Repair open in the wire between the PCM (E21) and the FTT sensor.
NO - Repair open in the wire between the PCM (E4) and the FTT sensor.