M/T
DTC Troubleshooting: P0113, P0113
DTC P0113:
IAT Sensor Circuit High Voltage
NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information How to Troubleshoot the Fuel and Emissions Systems.
1. Turn the ignition switch to ON (II).
2. Check the IAT SENSOR in the DATA LIST with the HDS.
Is about -40 °F (-40 °C) or less, or 4.92 V or more 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 MAF sensor/IAT sensor and the ECM/PCM.
3. Turn the ignition switch to LOCK (0).
4. Disconnect the MAF sensor/IAT sensor 5P connector.
5. Connect MAF sensor/IAT sensor 5P connector terminals No. 4 and No. 5 with a jumper wire.
6. Turn the ignition switch to ON (II).
7. Check the IAT SENSOR in the DATA LIST with the HDS.
Is about -40 °F (-40 °C) or less, or 4.92 V or more indicated?
YES -
Go to step 8.
NO -
Go to step 20.
8. Turn the ignition switch to LOCK (0).
9. Remove the jumper wire from the MAF sensor/IAT sensor 5P connector.
10. Turn the ignition switch to ON (II).
11. Measure the voltage between MAF sensor/IAT sensor 5P connector terminal No. 5 and body ground.
Is there about 5 V?
YES -
Go to step 12.
NO -
Go to step 16.
12. Turn the ignition switch to LOCK (0).
13. Jump the SCS line with the HDS.
14. Disconnect ECM/PCM connector B (49P).
15. Check for continuity between MAF sensor/IAT sensor 5P connector terminal No. 4 and ECM/PCM connector terminal B34.
Is there continuity?
YES -
Go to step 27.
NO -
Repair an open in the wire between the ECM/PCM(B34) and the MAF sensor/IAT sensor, then go to step 22.
16. Turn the ignition switch to LOCK (0).
17. Jump the SCS line with the HDS.
18. Disconnect ECM/PCM connector B (49P).
19. Check for continuity between MAF sensor/IAT sensor 5P connector terminal No. 5 and ECM/PCM connector terminal B32.
Is there continuity?
YES -
Go to step 27.
NO -
Repair an open in the wire between the ECM/PCM(B32) and the MAF sensor/IAT sensor, then go to step 22.
20. Turn the ignition switch to LOCK (0).
21. Replace the MAF sensor/IAT sensor Service and Repair.
22. Reconnect all connectors.
23. Turn the ignition switch to ON (II).
24. Reset the ECM/PCM with the HDS.
25. Do the ECM/PCM idle learn procedure ECM/PCM Idle Learn Procedure (M/T).
26. Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0113 indicated?
YES -
Check for poor connections or loose terminals at the MAF sensor/IAT sensor and the ECM/PCM, then go to step 1.
NO -
Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.
27. Reconnect all connectors.
28. Update the ECM/PCM if it does not have the latest software ECM/PCM Update (M/T), or substitute a known-good ECM/PCM.
29. Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0113 indicated?
YES -
Check for poor connections or loose terminals at the MAF sensor/IAT sensor and the ECM/PCM. If the ECM/PCM was updated, substitute a known-good ECM/PCM, then recheck. If the ECM/PCM was substituted, go to step 1.
NO -
If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, replace the original ECM/PCM Service and Repair. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.