Anti-Lock Relay

1. Remove the anti-lock relay.

Connector:

2. Measure the resistance between the following terminals of the anti-lock relay:

Terminals Resistance

5 and 4 60-100 ohms
3 and 1 Greater than 10,000 ohms
3 and 6 Less than 5 ohms
6 and 8 50-90 ohms
3 and 8 50-90 ohms
1 and 2 Greater than 10,000 ohms


3. Apply battery voltage to terminal 5 and ground to terminal 4 on the anti-lock relay.
4. Measure the resistance between the following terminals of the anti-lock relay:

Terminals Resistance

1 and 6 Less than 5 ohms
3 and 6 Greater than 10,000 ohms

5. Apply battery voltage to terminal 7 and ground to terminal 8 on the anti-lock relay.
6. Measure the resistance between the following terminals of the anti-lock relay:

Terminals Resistance

1 and 2 Less than 5 ohms

7. Remove the battery voltage and ground from the anti-lock relay terminals.
8. Place the Rotunda 73 Digital Multimeter 105-00051 or equivalent on diode check mode.
9. Measure the continuity between the following terminals of the anti-lock relay:

Terminals Continuity

6 (-) and 7 (+) Yes
6 (+) and 7 (-) No

NOTE: (+) and (-) refer to the digital multimeter test leads.

10. If the anti-lock relay fails any of the above checks, replace the anti-lock relay. Otherwise, return to the Pinpoint Tests.