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Home >> Ford >> 2007 >> Mustang V8-4.6L VIN H >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Information Bus >> Testing and Inspection >> Pinpoint Tests >> Test J: No High Speed Controller Area Network (HS-CAN) Communication, All Modules Are Not Responding
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Test J: No High Speed Controller Area Network (HS-CAN) Communication, All Modules Are Not Responding

PINPOINT TEST J: NO HIGH SPEED CONTROLLER AREA NETWORK (HS-CAN) COMMUNICATION, ALL MODULES ARE NOT RESPONDING


J1-J2:






J3-J4:






J5-J6:






J7-J8:






J8-J10:






J10-J13:






J13-J16:






J16-J18:






J19-J20:






Normal Operation
The HS-CAN uses an unshielded twisted pair cable, circuits 1827 (WH/LG) and 1828 (PK/LG). The powertrain control module (PCM), the anti-lock brake system (ABS) module (if equipped) and the instrument cluster all communicate with the scan tool using the HS-CAN.

Possible Causes
- Fuse
- Circuit 1827 (WH/LG) open, short to ground or voltage (HS-CAN +)
- Circuit 1828 (PK/LG) open, short to ground or voltage (HS-CAN -)
- Circuit 1827 (WH/LG) (HS-CAN +) and circuit 1828 (PK/LG) (HS-CAN -) shorted together
- PCM
- Instrument cluster
- ABS module (if equipped)
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