P0113
DTC P0113: IAT Sensor Circuit High Voltage1. Turn the ignition switch ON (II).
2. Check the IAT SENSOR in the DATA LIST with the HDS.
Is about -40 °F (-40 °C) or less, or 4.90 V or higher indicated?
YES - Go to step 3.
NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the IAT sensor and the ECM/PCM.
3. Turn the ignition switch OFF.
4. Disconnect the IAT sensor 2P connector.
5. Connect IAT sensor 2P connector terminals No.1 and No.2 with a jumper wire.
6. Turn the ignition switch ON (II).
7. Check the IAT SENSOR in the DATA LIST with the HDS.
Is about -40 °F ( -40 °C) or less, or 4.90 V or higher indicated?
YES - Go to step 8.
NO - Go to step 13.
8. Turn the ignition switch OFF.
9. Remove the jumper wire.
10. Turn the ignition switch ON (II).
11. Measure voltage between IAT sensor 2P connector terminal No.2 and body ground.
Is there about 5 V?
YES - Repair open in the wire between the ECM/PCM (A23) and the IAT sensor, then go to step 15.
NO - Go to step 12.
12. Measure voltage between ECM/PCM connector terminal B17 and body ground.
Is there about 5 V?
YES - Repair open in the wire between the ECM/PCM (B17) and the IAT sensor, then go to step 15.
NO - Go to step 19.
13. Turn the ignition switch OFF.
14. Replace the IAT sensor.
15. Turn the ignition switch ON (II).
16. Reset the ECM/PCM with the HDS.
17. Do the ECM/PCM idle learn procedure.
18. Check for Temporary DTCs or DTCs in the DTCs MENU with the HDS.
Are any Temporary DTCs or DTCs indicated?
YES - If DTC P0113 is indicated, check for poor connections or loose terminals at the IAT sensor and the ECM/PCM, then go to step 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC troubleshooting.
NO - Troubleshooting is complete.
19. Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM.
20. Check for Temporary DTCs or DTCs in the DTCs MENU with the HDS.
Are any Temporary DTCs or DTCs indicated?
YES - If DTC P0113 is indicated, check for poor connections or loose terminals at the IAT sensor and the ECM/PCM, then go to step 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC troubleshooting.
NO - If the ECM/PCM was updated, troubleshooting is complete If the ECM/PCM was substituted, replace the original ECM/PCM.