ABS Verification Test
ABS VERIFICATION TEST - VER 1Diagnostic Test
NOTE: If the ABM (Anti-Lock Brake Module) was replaced, it must be initialized using the scan tool. If not initialized, the ABS and ESP indicators will flash continuously with no DTCs. To Initialize the ABM, follow the directions on the scan tool.
NOTE: The Sensor Cluster is the same as the Dynamics sensor.
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.
CAUTION: Ensure braking capability is available before road testing.
NOTE: After Steering Angle Sensor replacement use the scan tool, perform ECU Initialization and follow the directions on the scan tool.
NOTE: The drive test requires a 90° turn.
4. Ensure that the ignition is on, and with the scan tool, erase all Diagnostic Trouble Codes from All modules. Start the engine and allow it to run for 2 minutes and fully operate the system that was malfunctioning.
5. Turn the ignition off and wait 5 seconds. Turn the ignition on and using the scan tool, read DTCs from all modules.
6. If any Diagnostic Trouble Codes are present, return to symptom list and trouble shoot new or recurring symptom.
NOTE: For Sensor Signal and Pump Motor faults, the ABM must sense all 4 wheels at 12 km/h (7.5 mph) before it will extinguish the ABS indicator.
CAUTION: Ensure braking capability is available before road testing.
7. If there are no DTCs present after turning ignition on, road test the vehicle for at least 5 minutes. Perform several anti-lock braking stops.
8. Again, with the scan tool read DTCs. If any DTCs are present, return to Symptom list.
9. If there are no Diagnostic Trouble Codes (DTCs) present, and the customer's concern can no longer be duplicated, the repair is complete.
Are any DTCs present or is the original concern still present?
Yes >> Repair is not complete, refer to appropriate symptom.
No >> Repair is complete.