System Precautions

CAUTION: See ANTI-LOCK BRAKE SAFETY PRECAUTIONS article in the GENERAL INFORMATION section.

Before proceeding with diagnosis, read and observe following precautions:

Ensure battery is fully charged and charging system is functional.
Probe Controller Anti-Lock Brake (CAB) connector from pin side. DO NOT backprobe CAB connector. Probe connector terminal carefully. DO NOT spread terminal, as this could cause intermittent problem.
DO NOT cause short circuits when performing electrical tests. This will set additional fault messages, making diagnosis of original problem more difficult.
DO NOT unplug or plug CAB connector with ignition on.
Use DRB voltmeter unless instructed to use external voltmeter.
DO NOT use test light in place of voltmeter.
Use DRB ohmmeter unless instructed to use external ohmmeter.
Always perform TEST VER-1A: SYSTEM VERIFICATION TEST under SELF-DIAGNOSTIC TESTS after repairs are made.
Always disconnect DRB when done.
Always disconnect DRB before charging battery.