System Tests: Notes
CAUTION:
Electronic modules are sensitive to static electrical charges. Proper grounding of technician and workplace is essential to prevent damage.
NOTE:
DO NOT replace Body Control Module (BCM) unless a DTC remains current after all DTC repairs have been performed. DO NOT replace BCM if only history DTCs are set.
NOTE:
Always check module ground and power circuits prior to replacing a control module. See GROUND DISTRIBUTION and/or POWER DISTRIBUTION articles in WIRING DIAGRAMS.
SYMPTOM INDEX
| Symptom | Perform System Test |
|---|---|
| Retained Accessory Power Inoperative | A |
| Retained Accessory Power On After Time-Out | B |
| Scan Tool Does Not Communicate With Class 2 Device | C |
| Scan Tool Does Not Power Up | D |
| Power Mode Mismatch | E |