ABS Main Relay: Testing and Inspection

Valve Relay Inspection (including Harness To ABS Control Module)
1. Turn the ignition switch off and disconnect the ABS control module connector.





2. Connect the SST to the ABS control module connector.
3. Turn the ignition switch to ON.
4. Measure the voltage between the ground terminal AB and the following terminals of the ABS control module connector.
Terminal: E, Z, Y, AG, BB Voltage 0 V
5. Apply 12 V to terminal B and ground terminal AK Measure the voltage between the ground terminal AB and the following terminals of the ABS control module connector.
^ If not as specified, inspect the wiring harness and the valve relay.
Terminal:E, Z, Y, AG, BA, BB Voltage B+

Valve Relay Inspection








1. Using an ohmmeter, inspect for continuity of the relay terminals.
^ If not as specified, replace the valve relay.

Motor Relay Inspection (including Harness To ABS Control Module)
1. Turn the ignition switch off and disconnect the ABS control module connector.





2. Connect the SST to the ABS control module connector.
3. Turn the ignition switch to ON.
4. Measure the voltage between terminal X and AB of the ABS control module connector.
Voltage: 0 V
5. Apply B+ to terminal B and ground terminal G. Measure the voltage between terminal X and AB of the ABS control module connector. If not as specified, inspect the wiring harness and the motor relay.
Voltage: B+

Motor Relay Inspection








1. Inspect for continuity of the relay terminals using an ohmmeter.
^ If not as specified, replace the motor relay.