Diagnostic Tests: Notes
WARNING:
Vehicles are equipped with Supplemental Inflatable Restraint (SIR) system. Before attempting any repairs involving steering column, instrument panel or related components, see SERVICE PRECAUTIONS and DISABLING & ACTIVATING AIR BAG SYSTEM in appropriate AIR BAG RESTRAINT SYSTEMS article.
CAUTION:
When using scan tool, exit all scan tool tests before cycling ignition switch from OFF 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.
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
.
NOTE:
Use adapter from Terminal Test Adapter Kit (J-35616-A) connected to DVOM when making all measurements.