F3 Check Anti-Lock Brake Warning Indicator

- Remove breakout box and anti-lock brake module adapter cable.

- Reconnect hydraulic control unit. Make sure all connections are clean and tight.

- Start engine and observe anti-lock brake warning indicator.

- Is anti-lock brake warning indicator illuminated?

YES -- Replace anti-lock brake relay. Go to F4. F4 Check Anti-Lock Brake Control Module

NO -- The fault was intermittent. The ABS and traction control system should be considered operational at this time and no further action required. Clear all DTCs.