DTC Troubleshooting: P0113 (10)

DTC P0113: IAT Sensor Circuit High Voltage Turn the ignition switch ON (II). Check the IAT SENSOR in the DATA LIST with the HDS. Is about −40 °C (−40 °F) 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.■
Turn the ignition switch OFF. Disconnect the IAT sensor 2P connector. Connect IAT sensor 2P connector terminals No. 1 and No. 2 with a jumper wire. Turn the ignition switch ON (II). Check the IAT SENSOR in the DATA LIST with the HDS. Is about −40 °C (−40 °F) or less, or 4.90 V or higher indicated?
YES | - | Go to Step 8 .
NO | - | Go to Step 18 .
Turn the ignition switch OFF. Remove the jumper wire from the IAT sensor 2P connector. Turn the ignition switch ON (II). |

Measure voltage between IAT sensor 2P connector terminal No. 2 and body ground. Is there about 5 V?
YES | - | Go to Step 12 .
NO | - | Go to Step 17 .
Turn the ignition switch OFF. Jump the SCS line with the HDS. Disconnect ECM/PCM connector A (31P). |

Connect IAT sensor 2P connector terminal No. 1 to body ground with a jumper wire. |

Check for continuity between ECM/PCM connector terminal A23 and body ground. Is there continuity?
YES | - | Go to Step 21 .
NO | - | Repair open in the wire between the ECM/PCM (A23) and the IAT sensor, then go to Step 20 .

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 20 .
NO | - | Go to Step 25 .
Turn the ignition switch OFF. Replace the IAT sensor. Reconnect all connectors. Turn the ignition switch ON (II). Reset the ECM/PCM with the HDS. Do the ECM/PCM idle learn procedure. Check for Temporary DTCs or DTCs 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's troubleshooting.
NO | - | Troubleshooting is complete.■
Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM. Check for Temporary DTCs or DTCs 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's troubleshooting.
NO | - | If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, replace the original ECM/PCM. ■