Symptom Tests: Notes
NOTE:
Tests included in this article are written specifically for New Generation Star (NGS) tester functionality. Other OBD II-compatible scan tools may be used, but may not be equipped with equal test function capabilities. Refer to scan tool manufacturer's instructions.
NOTE:
Always check module power and ground circuits prior to replacing a control module. See DATA LINK CONNECTORS, GROUND DISTRIBUTION or POWER DISTRIBUTION article in WIRING DIAGRAMS.
SYMPTOM INDEX
| Condition | Go To Test |
|---|---|
| Anti-Lock Brake Control Module Does Not Respond To Scan Tool | A |
| Powertrain Control Module Does Not Respond To Scan Tool | B |
| Transmission Control Module Does Not Respond To Scan Tool | C |
| No Module/Network Communication - Unable To Communicate With Any Module | D |
| No Module/Network Communication - No Power To DLC C2018 | E |