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Test A: Abs Indicator Does Not Come On

  1. Turn the ignition switch on, and watch the ABS indicator. Does the ABS indicator come on? If yes, the system is okay at this time. If no, go to next step.
  2. Apply the parking brake. Does the brake system indicator come on? If yes, go to next step. If no, repair open in the indicator power source circuit. If necessary, substitute a known-good ABS modulator-control unit, and recheck.
  3. Turn the ignition switch off.
  4. Disconnect the ABS control unit 31-pin connector.
  5. Turn the ignition switch on. Does the ABS indicator come on? If yes, check for loose terminals in the ABS control unit 31-pin connector. If necessary, substitute a known-good ABS modulator-control unit, and recheck. If no, go to next step.
  6. Turn the ignition switch off.
  7. Remove the gauge assembly.
  8. Disconnect 14-pin gauge assembly connector "C".
  9. Check for continuity between gauge assembly connector "C", terminal No. 14 and body ground. Is there continuity? If yes, repair short to body ground in the wire between the gauge assembly and the ABS control unit. If no, go to next step.
  10. Check for continuity between gauge assembly connector "C", terminal No. 9 and body ground. Is there continuity? If yes, check for loose terminals in the gauge assembly connectors. If the connectors are okay, replace the gauge assembly. If no, repair open in the wire between the gauge assembly and body ground.
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