LEMON Manuals: Even more car manuals for everyone
Home >> Acura >> 1994 >> Integra GS-R, 4D Sedan >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Trouble Codes >> Code 7-4, Rear Solenoid

Code 7-4, Rear Solenoid

  1. Start engine. If ANTI-LOCK light does not go off, go to next step. If light goes off, system is okay at this time. Check connectors and wire harness between control unit, fail-safe relay and modulator.
  2. Check for ABS trouble codes. If Code 7-4 is not set, perform appropriate trouble code test. If Code 7-4 is set, disconnect rear fail-safe relay connector. Measure voltage between White wire terminal of fail-safe relay connector and ground.
  3. If battery voltage is not present, repair open White wire between underhood ABS fuse/relay box and rear fail-safe relay. If continuity exists, test rear fail-safe relay and replace if necessary. See RELAY TEST under DIAGNOSIS & TESTING.
    NOTE: Modulator 14-pin connector has more than one Blue/Black wires. Ensure appropriate Blue/Black wire is tested.
  4. Disconnect modulator 14-pin connector. Connect jumper wire between White wire and Blue/Black wire terminals of rear fail-safe relay. Measure voltage between modulator 14-pin harness connector terminal No. 6 and ground. See Figure .
  5. If battery voltage is not present, repair open in appropriate Blue/Black wire between fail-safe relay and modulator. If battery voltage is present, measure voltage between 14-pin harness connector terminal No. 9 and ground.
  6. If battery voltage is not present, repair open in appropriate Blue/Black wire between fail-safe relay and modulator. If battery voltage is present, measure resistance between Yellow/White wire and Gray/White wire terminals of modulator.
  7. If resistance is not 2.5-2.9 ohms, inspect modulator wire harness. If wire harness is okay, replace modulator. If resistance is 2.5-2.9 ohms, check continuity between Yellow/White wire terminal of modulator and ground.
  8. If continuity exists, inspect modulator wire harness. If wire harness is okay, replace modulator. If continuity does not exist, measure resistance between White wire and Red/White wire terminals of modulator.
  9. If resistance is not 2.5-2.9 ohms, inspect modulator wire harness. If wire harness is okay, replace modulator. If resistance is 2.5-2.9 ohms, check continuity between Red/White wire terminal of modulator and ground.
  10. If continuity exists, inspect modulator wire harness. If wire harness is okay, replace modulator. If continuity does not exist, check continuity between Yellow/White wire and Red/White wire terminals of modulator. If continuity does not exist, go to next step. If continuity exists, replace modulator wire harness.
  11. Check continuity between following modulator terminals: Red/White wire and Red/Black wire; Red/White wire and Yellow/Black wire; Red/White wire and Red/Blue wire; Red/White wire and Yellow/Blue wire.
  12. If continuity exists, replace modulator wire harness. If continuity does not exist, check continuity between following modulator terminals: Yellow/White wire and Red/Black wire; Yellow/White wire and Yellow/Black wire; Yellow/White wire and Red/Blue wire; Yellow/White wire and Yellow/Blue wire.
  13. If continuity exists, replace modulator wire harness. If continuity does not exist, disconnect control unit 26-pin connector. Check continuity between Yellow/White wire terminal of 26-pin connector and ground.
  14. If continuity exists, Yellow/White wire between control unit and modulator is shorted to ground. If continuity does not exist, check continuity between Red/White wire terminal of 26-pin connector and ground.
  15. If continuity exists, Red/White wire between control unit and modulator is shorted to ground. If continuity does not exist, check continuity between Red/White wire and Yellow/White wire terminals of 26-pin connector.
  16. If continuity exists, repair shorted Yellow/White wire and Red/White wire between control unit and modulator. If continuity does not exist, check continuity between following terminals of 26-pin connector: Red/White wire and Red/Black wire; Red/White wire and Yellow/Black wire; Red/White wire and Red/Blue wire; Red/White wire and Yellow/Blue wire.
  17. If continuity exists, repair shorted wire(s) between control unit and modulator. If continuity does not exist, check continuity between following terminals of 26-pin connector: Yellow/White wire and Red/Black wire; Yellow/White wire and Yellow/Black wire; Yellow/White wire and Red/Blue wire; Yellow/White wire and Yellow/Blue wire.
  18. If continuity exists, repair shorted wire(s) between control unit and modulator. If continuity does not exist, Reconnect modulator 14-pin connector. Measure voltage between Yellow/White wire terminal of 26-pin connector and ground.
  19. If battery voltage is not present, repair open Yellow/White wire between control unit and modulator. If battery voltage is present, measure voltage between Red/White wire terminal of 26-pin connector and ground.
  20. If battery voltage is not present, repair open Red/White wire between control unit and modulator. If battery voltage is present, check continuity between Black wire terminal of 22-pin connector and ground.
  21. If continuity does not exist, check ground connection. If ground connection is okay, repair open Black wire between control unit and ground. If continuity exists, disconnect control unit 22-pin connector. Connect jumper wire between Yellow/Green wire terminal of 22-pin connector and ground.
  22. Remove jumper wire from rear fail-safe relay. Disconnect front fail-safe relay connector. Check continuity between Yellow/Green wire terminal of rear fail safe relay connector and ground.
  23. If continuity does not exist, repair open Yellow/Green wire control unit and rear fail-safe relay. If continuity exists, remove jumper wire from Yellow/Green wire terminal of control unit 22-pin connector.
  24. Check continuity between Black wire terminal of rear fail-safe relay connector and ground. If continuity does not exist, check ground connection. If ground connection is okay, repair open Black wire between rear fail-safe relay and ground.
  25. If continuity exists, check for loose control connectors. If connectors are okay, install known-good control unit and retest.
scientia non olet · About LEMON Manuals