Diagnostic Routine H

Diagnostic Routine H

Diagnostic Overview

The Instrument Panel Cluster (IPC) Does Not Respond To The Scan Tool

Refer to Wiring Diagram Set 14 for schematic and connector information Electrical Diagrams.

Refer to Wiring Diagram Set 42 for schematic and connector information Electrical Diagrams.

Normal Operation and Fault Conditions

The IPC (Instrument Panel Cluster) communicates with the scan tool through the HS-CAN (High Speed Controller Area Network) and communicates with the other modules through the I-CAN (Infotainment Controller Area Network).

Visual Inspection and Diagnostic Pre-checks

Verify BCM (Body Control Module) fuse 11 (10A) is OK.

Pinpoint Test

1. CHECK THE IPC (Instrument Panel Cluster) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

1. Disconnect: IPC (Instrument Panel Cluster).

2. Ignition ON.

3. Measure:





Is the voltage greater than 11 volts?






2. CHECK THE IPC (Instrument Panel Cluster) GROUND CIRCUIT FOR AN OPEN

1. Ignition OFF.

2. Disconnect: Negative Battery Cable.

3. Measure:





Are the resistances less than 3 ohms?






3. CHECK THE HS-CAN (High Speed Controller Area Network) CIRCUITS BETWEEN THE IPC (Instrument Panel Cluster) AND THE DLC (Data Link Connector) FOR AN OPEN

1. Measure:





Are the resistances less than 3 ohms?






4. CHECK FOR CORRECT IPC (Instrument Panel Cluster) OPERATION

1. Ignition OFF.

2. Disconnect and inspect the IPC (Instrument Panel Cluster) connector.

3. Repair:

- corrosion (replace connector or terminals- clean module pins)
- damaged or bent pins- replace terminals/pins
- pushed-out pins- replace pins as necessary

4. Reconnect the IPC (Instrument Panel Cluster) connector. Make sure it seats and latches correctly.

5. Operate the system and verify the concern is still present.

Is the concern still present?