Test S: No Medium Speed Controller Area Network (MS-CAN) Communication, All Modules Are Not Responding

PINPOINT TEST S: NO MEDIUM SPEED CONTROLLER AREA NETWORK (MS-CAN) COMMUNICATION, ALL MODULES ARE NOT RESPONDING

S1-S2:

S2-S4:

S5-S7:

S7-S8:

S9-S12:

S12-S16:

S16-S20:

S20-S24:

S24-S27:

S27-S29:

S29-S33:

S33-S37:

S37-S41:

S41-S44:

S45-S48:

S49-S53:

S54-S56:

Normal Operation
The MS-CAN network uses an unshielded twisted pair cable, circuits VDB06 (GY/OG) and VDB07 (VT/OG) provide the network connection to all modules on the network. The smart junction box (SJB), the instrument cluster, the electronic automatic temperature control (EATC) module (if equipped), the audio unit, the THX(R) amplifier (if equipped), the satellite radio receiver (if equipped), the digital versatile disc (DVD) (if equipped), the parking aid module (if equipped), the power liftgate module (if equipped), the driver seat module (if equipped), and the climate controlled seat module (if equipped) all communicate with the scan tool using the MS-CAN network.

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- SJB
- Instrument cluster
- Audio unit
- DVD player (if equipped)
- EATC module (if equipped)
- Parking aid module (if equipped)
- Power liftgate module (if equipped)
- Satellite radio receiver (if equipped)
- THX(R) amplifier (if equipped)
- Driver seat module (DSM) (if equipped)
- Climate controlled seat module (if equipped)