D3 Check Relay Operation

- Key OFF.

- Locate and disconnect the anti-lock brake control module.

- Key ON.

- Connect the "BK/BL" wire at the anti-lock brake control module connector to ground.

- Does the anti-lock relay click when the wire is grounded?
YES -- Go to D4. D4 Check Warning Indicator Diode

NO -- Inspect "BK/BL" wire from anti-lock relay to anti-lock brake control module. If OK, go to D6. D6 Check ABS Relay