No Bus Bias

SYMPTOM
* NO BUS BIAS

POSSIBLE CAUSES
- Test fail due to ignition OFF
- Fused ignition switch output circuit open
- BCM ground circuit open
- Fused B(+) voltage low
- DRB or DRB cable failure
- CCD bus (+) circuit open
- CCD bus (-) circuit open
- PCM CCD bus resistance failure
- BCM CCD bus resistance failure
- BCM ground faulty