Test G: No High Speed Controller Area Network (CAN) Communication

PINPOINT TEST G: NO HIGH SPEED CONTROLLER AREA NETWORK (CAN) COMMUNICATION

G1-G3:

G3-G4:

G5-G8:

G9-G11:

Normal Operation
The high speed CAN has an unshielded twisted pair cable, circuits 1847 (WH/OG) and 1848 (PK/OG). The powertrain control module (PCM), instrument cluster, and the anti-lock brake system (ABS) module are all on the high speed CAN. The total resistance values from the data link connector (DLC) C251 must not be more than 5 ohms. If the resistance is more than 5 ohms there is an open in one of the CAN circuits, damage to the DLC C251, damage to one of the communications network module connectors, or damage to an in-line connector.

Possible Causes
- high speed CAN circuit 1847 (WH/OG) open, short to ground, or short to voltage
- high speed CAN circuit 1848 (PK/OG) open, short to ground, or short to voltage
- DLC C251
- PCM
- PCM C175
- instrument cluster
- instrument cluster C220
- ABS module
- ABS module C135