Pinpoint Test 20: Intermittent No High Speed Controller Area Network (HS-CAN) Communication
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PINPOINT TEST 20: INTERMITTENT NO HIGH SPEED CONTROLLER AREA NETWORK (HS-CAN) COMMUNICATION - HYBRID
Normal Operation
The High-Speed Controller Area Network (HS-CAN) uses an unshielded twisted pair cable, circuits (WH/BU) and (WH). In the event that 1 of the 2 network circuits (HS-CAN + or HS-CAN -) becomes open to a module on the network, unreliable network communication to all modules on the network may result.
Possible Causes
- 4X4 control module (if equipped)
- ABS module
- Battery Control Module (BCM)
- Instrument Cluster (IC)
- Occupant Classification System Module (OCSM)
- PCM
- Power Steering Control Module (PSCM)
- Restraints Control Module (RCM)
- Transmission Control Module (TCM)
Diagnostic Procedure
CAUTION:Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
NOTE:Most faults are due to connector and/or wiring concerns. Carry out a thorough inspection and verification before proceeding with the Pinpoint Test.
NOTE:Failure to disconnect the battery when instructed will result in false resistance readings. See Battery Disconnect.
