ABS Main Relay: Testing and Inspection

FAIL SAFE RELAY INSPECTION INCLUDING HARNESS TO ABS CM
1. Turn the ignition switch to OFF and disconnect the ABS control module connector.
2. Turn the ignition switch to ON.





3. Connect terminal 2J [2B for ABS/TCS] of the control module connector to a ground.





4. Check the above points.
5. If not as specified, inspect the wiring harness and the fail-safe relay.

FAIL SAFE RELAY INSPECTION





1. Measure resistance between terminals C and D of ABS relay connector.

Resistance 60-100 ohms





2. Check for continuity between the terminals.
3. If not as specified, replace the ABS relay.

MOTOR RELAY AND HARNESS TO ABS CM
1. Inspect the fail-safe relay.
2. Turn the ignition switch to OFF and disconnect the ABS control module connector.
3. Turn the ignition switch to ON.
4. Connect terminal 2J [2B for ABS/TCS] to a ground.





5. Connect terminal 2H [2A for ABS/TCS] to a ground.





6. Check the above points: Allowing the motor to operate for more than two seconds will damage the motor.
7. If not as specified, inspect the wiring harness and the motor relay.

MOTOR RELAY





1. Measure the resistance between terminals E and H. or between a and h of the ABS relay connector.

Resistance 50-90 ohms





2. Check for continuity between terminals B and F.
3. If not as specified, replace the ABS relay.