ABS Verification Test

ABS VERIFICATION TEST - VER 1.

WARNING: Ensure braking capability is available before road testing the vehicle.

NOTE: Always initialize the Anti-Lock Brakes Module after replacing it. Failure to do so will cause the ABS and ESP indicators to flash continuously, even though no DTCs are set in the module.

NOTE: For Sensor Signal and Pump Motor faults, the Anti-Lock Brakes Module must sense all 4 wheels at 25 km/h (15 mph) before it will extinguish the ABS Indicator.

1. Turn the ignition off.
2. Connect all previously disconnected components and connectors.
3. Ensure all accessories are turned off and the battery is fully charged.
4. Turn the ignition on.
5. With the scan tool, erase all Diagnostic Trouble Codes (DTCs) from All modules.
6. If the Anti-Lock Brakes Module was replaced, use the scan tool to perform ECU Initialization (which includes Drive Test). Follow directions on the scan tool. Note: The ECU Initialization process must include driving the vehicle into a 90° turn.
7. If the Dynamics Sensor was replaced, test drive the vehicle by turning the vehicle left or right in a curving manner at a velocity between 10 and 25 km/h (6 and 15 mph).
8. Start the engine and allow it to run for 2 minutes and fully operate the system that was malfunctioning.
9. Turn the ignition off, wait 5 seconds, then turn the ignition on.
10. Using the scan tool, read DTCs from all modules. If any DTCs are present, refer to the applicable diagnostic test procedure and troubleshoot the new or recurring symptom.
11. If there are no DTCs present, cycle the ignition switch, and road test the vehicle for at least 5 minutes. Perform several anti-lock braking stops.
12. With the scan tool read DTCs.

Are any DTCs present or is the original concern still present?
Yes >> Repair is not complete, refer to appropriate symptom.
No >> Repair is complete.