Pinpoint Test 7
PINPOINT TEST 7: NO HIGH SPEED CONTROLLER AREA NETWORK (CAN) COMMUNICATIONStep 1 - 4:
Step 5 - 8:
Step 9 - 12:
Step 13 - 14:
Normal Operation
The high speed CAN has an unshielded twisted pair cable, circuits (W) and (B). The PCM, ABS module, 4WD control module and the instrument cluster are all on the high speed CAN. Total network resistance values 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 D-01, damage to one of the network module connectors, or damage to an in-line connector. Since both the PCM and the instrument cluster share network termination responsibilities, a problem in either of these modules can result in a high speed CAN failure.
Possible Causes
- high speed CAN circuits (W) and (B) shorted to ground or open
- PCM
- instrument cluster
- ABS module
- 4WD control module