Checking the CAN C BUS Circuits (Diesel Only)

Test 1:

Test 2 - 5:

Test 6 - 7:

SYMPTOM
CHECKING THE CAN C BUS CIRCUITS (DIESEL ONLY)

TEST NOTE
This symptom is diagnosed using the test CAN C BUS PERFORMANCE (FCM) (DIESEL ONLY).

POSSIBLE CAUSES
- CAN C BUS(+) short to CAN C BUS (-)
- CAN C BUS (+) and/or CAN C BUS (-) circuit open
- CAN C BUS (+) and/or CAN C BUS (-) circuit short to ground
- CAN C BUS (+) and/or CAN C BUS (-) circuit short to voltage
- CAN C BUS (+) and/or CAN C BUS (-) circuit short to other circuits
- ABS - CAN BUS circuit
- ECM - terminating resistor
- FCM - terminating resistor