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Home >> Acura >> 1995 >> Legend GS, Automatic >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Circuit Tests >> Code 6-1: Front Fail-Safe Relay Circuit

Code 6-1: Front Fail-Safe Relay Circuit

  1. Remove front fail-safe relay. Test relay and replace if necessary. See RELAY TEST  under DIAGNOSIS & TESTING. If relay is okay, turn ignition on. Measure voltage between Yellow/Black wire terminal of fail-safe relay and ground.
  2. If battery voltage does not exist, repair open Yellow/Black wire between fuse No. 3 (in underdash fuse/relay box) and front fail-safe relay. If battery voltage is present, turn ignition off. Disconnect modulator unit connector, located on right side of engine compartment, near shock tower.
  3. Using DVOM, check continuity between Brown/Black wire terminal of fail-safe relay and ground. If continuity does not exist, go to next step. If continuity exists, repair shorted Brown/Black wire between modulator unit connector and front fail-safe relay.
  4. Check continuity between ground and following solenoid connector terminals: Brown/Black wire and Brown/Blue wire. If continuity does not exist, go to next step. If continuity exists, replace modulator unit.
  5. Disconnect 12-pin (models without traction control) or 14-pin (models with traction control) connector from ABS control unit. Check continuity between ground and following connector (12-pin or 14-pin) terminals: Red/Black, Yellow/Black, Red/Blue and Yellow/Blue wires. If continuity does not exist, go to next step. If continuity exits, repair shorted wire(s) between modulator unit and ABS control unit connectors.
  6. Remove rear fail-safe relay from underhood fuse/relay box. Disconnect 18-pin (without traction control) or 20-pin (with traction control) connector from ABS control unit. Check continuity between Yellow/Green wire terminal of connector (18-pin or 20-pin) and ground. If continuity exists, repair shorted Yellow/Green wire between ABS control unit and front fail-safe relay. If continuity does not exist, go to next step.
  7. Reinstall front fail-safe relay. Turn ignition on. Measure voltage between Yellow/Green wire terminal of ABS control unit and ground. If battery voltage does not exist, repair open Yellow/Green wire between ABS control unit and front fail-safe relay. If battery voltage exists, check for loose ABS control unit connectors. If connectors are okay, install a known-good ABS control unit and retest.
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