Bus Failure Messages - Shorted to 5 Volts

Test 1 - 2:

Test 3 - 5:

SYMPTOM
BUS FAILURE MESSAGE - SHORT TO 5 VOLTS

POSSIBLE CAUSES
- PCM 5 volts
- BUS system module/component internally
- BUS (+) or BUS (-) circuit shorted to voltage
- Continuity between BUS(+) or (-) and 5 volt supply circuits
- DRB or DRB cable