Diagnostic Test

WARNING: This page is about a different car, the 2005 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

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 DTC's. To Initialize the ABM, using the scan tool, select ECU VIEW, select ABS, select MISCELLANEOUS, select INITIALIZE ECU, and 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.

NOTE: If the vehicle is equipped with ESP (Electronic Stability Program) the Steering Angle Sensor must be calibrated anytime an ABS component or the battery is disconnected. To calibrate the Steering Angle Sensor, start the engine and center the steering wheel. Turn the steering wheel all the way to the left until it stops, turn the steering wheel all the way to the right until it stops and bring the steering wheel back to center.

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.

CAUTION: Ensure braking capability is available before road testing.

5. Turn the ignition off and wait 5 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 appropriate test and trouble shoot new or recurring symptom.

NOTE: For Sensor Signal and Pump Motor faults, the CAB must sense all 4 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 5 minutes. Perform several antilock braking stops.

8. Again, with the scan tool read DTC's. If any DTC's are present, return to appropriate test.

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 test.

Repair is complete.