Bus Bias Level Too Low

Test 1 - 3:

Test 4 - 5:

SYMPTOM
BUS BIAS LEVEL TOO LOW

TEST NOTE
This symptom is diagnosed using the test BUS BIAS LEVEL TOO HIGH.

POSSIBLE CAUSES
- DRB bus bias too high/low
- CCD bus (+) or bus (-) circuit open
- CCD bus(+)/(-) circuit shorted to ground
- Instrument cluster ground circuit open
- Instrument cluster bus bias level too high/low