Park Brake System Diagnosis

Step	Action	Yes	No
DEFINITION: This diagnostic table is designed to diagnose ONLY the mechanical components of the PARK brake system in order to determine if the PARK brake system is operating properly. You will be directed by the appropriate Symptom table to go to other brake system diagnostic tables as appropriate.
1	Were you sent here from a Hydraulic Brake Symptom table?	Go to Step 4	Go to Step 2
2	Were you sent here from a Park Brake Symptom table?	Go to Step 4	Go to Step 3
3	Raise and support the vehicle. Lifting and Jacking the Vehicle With the park brake RELEASED, attempt to rotate the rear wheels to check the rear brakes for a significant amount of drag. Do the rear brakes have a significant amount of drag?	Go to Step 5	Go to Step 4
4	Apply the park brake. Attempt to rotate the rear wheels to check the rear brakes for a significant amount of drag. Do the rear brakes have a significant amount of drag?	Go to Step 8	Go to Step 5
5	Have an assistant apply the brakes. Attempt to rotate the rear wheels to check the rear brakes for a significant amount of drag. Repeat steps 1-2 for the opposite rear wheel. Rotate the rear wheels to check the brake for a significant reduction of drag. Did the brake calipers apply and release properly?	Go to Step 7	Go to Step 6
6	Replace the appropriate rear brake caliper. Rear Brake Caliper Replacement Did you complete the replacement?	Go to Step 8	-
7	Inspect the rear parking brake actuators for proper operation and replace if necessary. Rear Parking Brake Actuator Replacement Did you complete the replacement?	Go to Step 8	-
8	Connect any components that were disconnected during diagnosis. Did you complete the operation?	Park Brake System OK	-