Pinpoint Test 13: No Medium Speed Controller Area Network (MS-CAN) Communication, All Modules Are Not Responding
PINPOINT TEST 13: NO MEDIUM SPEED CONTROLLER AREA NETWORK (MS-CAN) COMMUNICATION, ALL MODULES ARE NOT RESPONDINGNormal Operation
The medium speed controller area network (MS-CAN) uses an unshielded twisted pair cable, circuits (GY/O) and (V/O). The smart junction box (SJB), audio unit, satellite radio receiver, front display interface module (FDIM), front control interface module (FCIM), and the electronic manual temperature control (EMTC) module communicate with the scan tool using the MS-CAN network. The instrument cluster, while on the MS-CAN network, communicates with the scan tool only on the HS-CAN network.
Possible Causes
- Wiring, terminals or connectors
- Instrument cluster
- SJB
- Audio unit
- FCIM (if equipped)
- Satellite radio receiver (if equipped)
- FDIM
- EMTC module
Diagnostic Procedure
CAUTION: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
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