Code 7-1, Right Front Solenoid
- 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.
- Check for ABS trouble codes. If Code 7-1 is not set, perform appropriate trouble code test. If Code 7-1 is set, disconnect modulator 14-pin connector. Remove front fail-safe relay. Connect jumper wire between White/Green wire and Brown/Black wire terminals of fail-safe relay harness connector.NOTE: Modulator 14-pin connector has more than one Brown/Black wires. Ensure appropriate wire is tested.
- Measure voltage between modulator terminal No. 5 and ground. See Fig 1 . If battery voltage is present, go to next step. If battery voltage is not present, repair open Brown/Black wire between front fail-safe relay and modulator.
- Measure voltage between modulator terminal No. 8 and ground. If battery voltage is present, go to next step. If battery voltage is not present, repair open Brown/Black wire between front fail-safe relay and modulator.
- Measure resistance between modulator connector terminals No. 1 and 3. See Fig 1 . If resistance is 2.5-2.9 ohms, go to next step. If resistance is not 2.5-2.9 ohms, inspect modulator wire harness. If wire harness is okay, replace modulator
- Check continuity between modulator connector terminal No. 1 and ground. If continuity does not exist, go to next step. If continuity exists, inspect modulator wire harness. If wire harness is okay, replace modulator.
- Measure resistance between modulator connector terminals No. 8 and 13. If resistance is 2.5-2.9 ohms, go to next step. If resistance is not 2.5-2.9 ohms, inspect modulator wire harness. If wire harness is okay, replace modulator
- Check continuity between modulator connector terminal No. 12 and ground. If continuity does not exist, go to next step. If continuity exists, inspect modulator wire harness. If wire harness is okay, replace modulator.
- Check continuity between modulator connector terminals No. 1 and 12. If continuity does not exist, go to next step. If continuity exists, replace modulator wire harness.
- Disconnect control unit 26-pin connector. Check continuity between Yellow/Black wire terminal of 26-pin connector and ground. If continuity is not present, go to next step. If continuity is present, Yellow/Black wire between control unit and modulator is shorted to ground.
- Check continuity between Red/Black wire terminal of 26-pin connector and ground. If continuity is not present, go to next step. If continuity is present, Red/Black wire between control unit and modulator is shorted to ground.
- Check continuity between Red/Black wire and Yellow/Black wire terminals of 26-pin connector. If continuity is not present, go to next step. If continuity is present, repair shorted Red/Black wire Yellow/Black wire between control unit.
- Reconnect modulator 14-pin connector. Measure voltage between Yellow/Black wire terminal of control unit 26-pin connector and ground. If battery voltage exists, go to next step. If battery voltage is not present, repair open Yellow/Black wire between control unit and modulator.
- Measure voltage between Red/Black wire terminal of control unit 26-pin connector and ground. If battery voltage exists, go to next step. If battery voltage is not present, repair open Red/Black wire between control unit and modulator.
- Check continuity between Black wire terminal of 26-pin connector and ground. If continuity is not present, check ground connection. If ground connection is okay, repair open Black wire between control unit and ground.
- If continuity is present, check for loose control unit connectors. If connectors are okay, install a known-good control unit and retest.