Pinpoint Test 6
PINPOINT TEST 6: NO MEDIUM SPEED CONTROLLER AREA NETWORK (CAN) COMMUNICATIONStep 1 - 4:
Step 5 - 8:
Step 9:
Normal Operation
The medium speed CAN has an unshielded twisted pair cable, circuits (W/O) and (P/O). The SJB and the instrument cluster are the only modules on the medium 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 medium 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 SJB and the instrument cluster share network termination responsibilities, a problem in either of these modules can result in a medium speed CAN failure.
Possible Causes
- medium speed CAN circuits (W/O) and (P/O), shorted to ground or open
- SJB power circuit (T/B) open
- SJB ground circuit (B/W) open
- DLC D-01
- SJB instrument cluster
- battery junction box (BJB) fuse 19 (40 A)