Start engine and observe ABS warning light. Light should illuminate for a few seconds. If light does not illuminate as described, turn ignition off. Disconnect ABS control module connector. Using a jumper wire, connect terminal AD of ABS control module connector to ground. See Figure . Turn ignition on.
If ABS warning light illuminates, check ABS control module. See ABS CONTROL MODULE TEST . If light does not illuminate, remove instrument cluster. Remove and check ABS warning light bulb. Replace bulb as necessary. If bulb is okay, check METER fuse and wiring harness. Repair or replace as necessary. If METER fuse and wiring harness are okay, go to next step.
Using ohmmeter, connect positive lead to terminal 2H (Black/Yellow wire) of instrument cluster and negative lead to terminal 1B (Gray wire) of instrument cluster. See Fig 1 . If continuity is not present, replace instrument cluster. If continuity is present, repair wiring harness between instrument cluster and ABS control module.

Fig 1: Identifying Instrument Cluster Connector Terminals

Courtesy of MAZDA MOTORS CORP.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Operational Test