P2122
DTC P2122: APP Sensor A (Throttle Position Sensor D) Circuit Low Voltage1. Turn the ignition switch ON (II).
2. Check APP SENSOR A in the DATA LIST with the HDS.
Is there about 0.2 V or less?
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 A 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.2 and No.3.
Is there about 5 V?
YES - Go to step 7.
NO - Go to step 16.
7. Turn the ignition switch OFF.
8. Jump the SCS fine with the HDS.
9. Disconnect PCM connector A (44P).
10. At the wire harness side, check for continuity between the APP sensor A/B 6P connector terminal No.1 and body ground.
Is there continuity?
YES - Repair short in the wire between APP sensor A and the PCM (A17), then go to step 21.
NO - Go to step 11.
11. Check for continuity between the PCM connector terminal A17 and APP sensor A/B 6P connector terminal No.1.
Is there continuity?
YES - Go to step 12.
NO - Repair open in the wire between APP sensor A and the PCM (A17), then go to step 21.
12. Reconnect PCM connector A (44P).
13. At the wire harness side, connect APP sensor A/B 6P connector terminal No.3 and No.1 with a jumper wire.
14. Turn the ignition switch ON (II).
15. Check APP SENSOR A in the DATA LIST with the HDS.
Is there 0.2 V or less?
YES - Go to step 26.
NO - Go to step 20.
16. Turn the ignition switch OFF.
17. Jump the SCS line with the HDS.
18. Disconnect PCM connector A (44P).
19. Check for continuity between PCM connector terminal A24 and APP sensor A/B 6P connector terminal No.3.
Is there continuity?
YES - Go to step 26.
NO - Repair open in the wire between APP sensor A and the PCM (A24), then go to step 21.
20. Replace accelerator pedal.
21. Reconnect all connectors.
22. Turn the ignition switch ON (II).
23. Reset the PCM with the HDS.
24. Do the PCM idle learn procedure.
25. Check for Temporary DTCs or DTCs with the HDS.
Are any Temporary DTCs or DTCs indicated?
YES - If DTC P2122 is indicated, check for poor connections or loose terminals at the APP sensor A 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.
26. Update the PCM if it does not have the latest software, or substitute a known-good PCM.
27. Check for Temporary DTCs or DTCs with the HDS.
Are any Temporary DTCs or DTCs indicated?
YES - If DTC P2122 is indicated, check for poor connections or loose terminals at APP sensor A 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.