ABS Verification Test
ABS VERIFICATION TEST - VER 1NOTE: If the ABM (Anti-Lock Brake Module) was replaced, it must be initialized using the scan tool. If not initialized, the ABS indicator will flash continuously with no DTC's. To initialize the ABM, follow the directions on the scan tool.
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. 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 two minutes and fully operate the system that was malfunctioning.
NOTE: After Steering Angle Sensor replacement use the scan tool, perform ECU Initialization and follow the directions on the scan tool.
NOTE: The test drive requires a 90° turn.
CAUTION: Ensure braking capability is available before road testing.
5. Turn the ignition off and wait five seconds. Turn the ignition on and using the scan tool, read DTC's 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 CAB must sense all four wheels at 25 km/h (15 mph) before it will extinguish the ABS Indicator.
CAUTION: Ensure braking capability is available before road testing.
7. If there are no DTC's present after turning ignition on, road test the vehicle for at least five minutes. Perform several antilock braking stops.
8. Again, with the scan tool read DTC's. If any DTC's are present, return to Symptom list.
9. If there are no Diagnostic Trouble Codes (DTC's) present, and the customer's concern can no longer be duplicated, the repair is complete.
Are any DTC's present or is the original concern still present?
Yes >>Repair is not complete, refer to appropriate symptom.
No >>Repair is complete.