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 with the rear axle supported by jack stands. Refer to 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 8	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 14	Go to Step 5
5	Visually inspect the park brake cable connections and the cables that are accessible on the UNDERSIDE of the vehicle for disconnections and/or damage. Were any of the park brake cables disconnected and/or damaged?	Go to Step 6	Go to Step 7
6	Reconnect or replace the park brake cables as necessary. Refer to Parking Brake Cable Replacement . Did you complete the repair and/or replacement?	Go to Step 14	-
7	Is the vehicle equipped with an integral parking brake?	Go to Step 8	Go to Step 10
8	Disconnect the rear park brake cables from the equalizer and from the brake caliper piston apply levers. Refer to Parking Brake Cable Replacement . Have an assistant apply and maintain the caliper piston apply lever to apply the caliper piston. Attempt to rotate the rear wheels to check the rear brakes for a significant amount of drag. Release the caliper piston apply lever. Repeat steps 2-4 for the opposite caliper piston apply lever. 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 11	Go to Step 9
9	Replace the appropriate rear brake caliper. Refer to Rear Brake Caliper Replacement . Did you complete the replacement?	Go to Step 14	-
10	Inspect the parking brake adjustment. Did you find and correct a condition?	Go to Step 14	Go to Step 11
11	With the aid of an assistant, apply and release the parking brake while observing the cables for free movement. Did the park brake cables move freely?	Go to Step 13	Go to Step 12
12	Replace any of the park brake cables inspected that do not have free movement. Refer to Parking Brake Cable Replacement . Did you complete the replacement?	Go to Step 14	-
13	Inspect the electronic parking brake control module for proper operation and replace if necessary. Refer to Electronic Parking Brake Control Module Replacement . Did you complete the replacement?	Go to Step 14	-
14	Install or connect any components that were removed or disconnected during diagnosis. Did you complete the operation?	Park Brake System OK	-