Pretest Inspection
WARNING: This page is about a different car, the 1992 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
Before proceeding with diagnosis, the following precautions must be followed:
- Vehicle must have a fully charged battery and functional charging system.
- Only perform test steps indicated. It is NOT necessary to perform all steps in a test.
- VEHICLE COMMUNICATIONS tests should only be used when instructed to do so by another test. Always start at TEST 1A: BLANK DRB-II MESSAGE SCREEN.
- Always perform VERIFICATION TEST after repairs are made.
- At the end of each test step, reconnect all wires and install any components removed for testing.
- Use extreme care when connecting or disconnecting wiring during testing to prevent accidental grounding or shorting.
- DO NOT use a test light in place of a voltmeter.
- Always disconnect DRB-II after use.
- Always disconnect DRB-II before charging battery.