P2128
DTC P2128: APP Sensor B (Throttle Position Sensor E) Circuit High Voltage1. Turn the ignition switch ON (II).
2. Check the APP SENSOR B in the DATA LIST with the HDS.
Is there about 4.8 V or more?
YES - Go to step 3.
NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the APP sensor B and at the PCM.
3. Turn the ignition switch OFF.
4. Disconnect APP sensor A/B 6P connector.
5. Turn the ignition switch ON (II).
6. At the wire harness side, measure voltage between APP sensor A/B 6P connector terminals No.1 and No.2.
Is there about 5 V?
YES - Go to step 11.
NO - Go to step 7.
7. Turn the ignition switch OFF.
8. Jump the SCS line with the HDS.
9. Disconnect PCM connector A (44P).
10. Check for continuity between PCM connector terminal A35 and APP sensor A/B 6P connector terminal No.2.
Is there continuity?
YES - Go to step 18.
NO - Repair open in the wire between APP sensor B and the PCM (A35), then go to step 13.
11. Turn the ignition switch OFF.
12. Replace the APP sensor.
13. Reconnect all connectors.
14. Turn the ignition switch ON (II).
15. Reset the PCM with the HDS.
16. Do the PCM idle learn procedure.
17. Check for Temporary DTCs or DTCs with the HDS.
Are any Temporary DTCs or DTCs indicated?
YES - If DTC P2128 is indicated, check for poor connections or loose terminals at APP sensor B and the PCM, then go to step 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.
NO - Troubleshooting is complete.
18. Update the PCM if it does not have the latest software, or substitute a known-good PCM.
19. Check for Temporary DTCs or DTCs with the HDS.
Are any Temporary DTCs or DTCs indicated?
YES - If DTC P2128 is indicated, check for poor connections or loose terminals at APP sensor B and the PCM, then go to step 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.
NO - If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM.