Diagnostic Routine C

Diagnostic Routine C

Diagnostic Overview

The Temperature Gauge Is Inoperative

Normal Operation and Fault Conditions

NOTE: If DTC (Diagnostic Trouble Code) U0100:00 sets in the IPC (Instrument Panel Cluster), other observable symptoms can be an inoperative tachometer, speedometer or odometer.

REFER to Temperature Gauge .

If the BCM (Body Control Module) does not receive the engine coolant temperature message from the PCM (Powertrain Control Module) for more than 5 seconds, the BCM (Body Control Module) and IPC (Instrument Panel Cluster) set DTC (Diagnostic Trouble Code) U0100:00.

If the IPC (Instrument Panel Cluster) does not receive the engine coolant temperature message from the BCM (Body Control Module) for more than 5 seconds, the IPC (Instrument Panel Cluster) defaults the temperature gauge to cold (C).

Pinpoint Test

1. RETRIEVE THE RECORDED DTCs (Diagnostic Trouble Codes) FROM THE IPC (Instrument Panel Cluster) SELF-TEST

1. Using a scan tool, perform the IPC (Instrument Panel Cluster) self-test.

Are any DTCs (Diagnostic Trouble Codes) recorded?







2. RETRIEVE THE RECORDED DTCs (Diagnostic Trouble Codes) FROM THE PCM (Powertrain Control Module) KOEO (Key ON Engine OFF) SELF-TEST

1. Using a scan tool, perform the PCM (Powertrain Control Module) KOEO (Key ON Engine OFF) self-test.

Are any DTCs (Diagnostic Trouble Codes) recorded?







3. RETRIEVE THE RECORDED DTCs (Diagnostic Trouble Codes) FROM THE BCM (Body Control Module) SELF-TEST

1. Using a scan tool, perform the BCM (Body Control Module) self-test.

Are any DTCs (Diagnostic Trouble Codes) recorded?







4. CHECK THE TEMPERATURE GAUGE OPERATION USING THE DEALER TEST MODE

1. Ignition ON.

2. Monitor the temperature gauge.

3. Ignition OFF.

4. Enter the Dealer Test Mode. REFER to Dealer Test Mode .

5. Scroll to gauge sweep.

6. Monitor the temperature gauge when the gauge sweep initiates.

Does the temperature gauge start at cold (C), move to full hot (H) and return to cold (C)?