Diagnostic Tests: Notes
CAUTION:
When using scan tool, exit all scan tool tests before cycling ignition switch from LOCK to RUN position unless scan tool instructions indicate otherwise. Follow all scan tool manufacturer's instructions, or DTCs (actual or false) may set, vehicle systems may malfunction or scan tool may malfunction.
CAUTION:
Electronic modules are sensitive to static electrical charges. Proper grounding of technician and workplace is essential to prevent damage.
CAUTION:
BCM Brown 24-pin connector C1 contains power and ground sources. When removing BCM, always turn ignition switch to LOCK position. Always disconnect connector C1 first before disconnecting connectors C2 (Light Blue) and C3 (Purple). When installing BCM, always reconnect connectors C2 and C3, then connector C1 last.
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 DATA LINK CONNECTORS, GROUND DISTRIBUTION and/or POWER DISTRIBUTION articles in WIRING DIAGRAMS.
NOTE:
For component locations, see COMPONENT LOCATIONS
. For wiring circuit identification, see WIRING DIAGRAMS
.