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

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

G1-G3:

G3-G5:

G6-G8:

G9-G10:

G11-G12:

G13-G16:

G17:

Normal Operation
The high speed CAN has an unshielded twisted pair cable, circuits 1827 (WH/LG) and 1828 (PK/LG). The anti-lock brake system (ABS) module, the instrument cluster and the powertrain control module (PCM) are all on the high speed CAN. The total resistance values from the module to the data link connector (DLC) must not be more than 5 ohms. If the resistance is more than 5 ohms there is an open in one of the high speed 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 1827 (WH/LG) short to voltage, short to ground or open
- high speed CAN circuit 1828 (PK/LG) short to voltage, short to ground or open
- DLC C251
- ABS module C135
- instrument cluster C220
- PCM C175b
- ABS module
- instrument cluster
- PCM