Park Brake System Diagnosis

Step	Action	Yes	No
DEFINITION: This diagnostic table is designed to diagnose ONLY the mechanical components of the parking brake system in order to determine if the parking 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 parking brake symptom table?	Go to Step 4	Go to Step 3
3	Is the symptom related to the ability of the parking brake system to hold and / or release?	Go to Symptoms - Park Brake	Go to Symptoms - Hydraulic Brakes
4	Raise and support the vehicle with the rear axle supported by jack stands. Refer to Lifting and Jacking the Vehicle . With the parking 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 5
5	Apply the parking 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 13	Go to Step 6
6	Visually inspect the parking brake cable connections and the cables that are accessible on the UNDERSIDE of the vehicle for disconnections and / or damage. Were any of the parking brake cables disconnected and / or damaged?	Go to Step 7	Go to Step 8
7	Reconnect or replace the parking brake cables as necessary. Refer to Parking Brake Cable Replacement . Did you complete the repair and / or replacement?	Go to Step 13	-
8	Disconnect the rear parking brake cables from the equalizer and from the brake caliper apply levers. Refer to Parking Brake Cable Replacement . Have an assistant apply and maintain the caliper apply lever to apply the caliper piston. Attempt to rotate one rear wheel to check the rear brake for a significant amount of drag. Release the caliper apply lever at the rear wheel brake caliper. Repeat steps 2, 3 and 4 for the other side rear wheel brake. 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 10	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 13	-
10	With the aid of an assistant, apply and release the parking brake while observing the cables for free movement. Did the parking brake cables move freely?	Go to Step 12	Go to Step 11
11	Replace any of the parking brake cables inspected that do not have free movement. Refer to Parking Brake Cable Replacement . Did you complete the replacement?	Go to Step 13	-
12	Inspect the parking brake actuator switch for proper operation. Inspect for proper connection of parking brake actuator switch wiring harness and connect if necessary. Replace the switch if necessary. Refer to Parking Brake Actuator Switch Replacement . Inspect the parking brake control module for proper operation. Inspect for proper connection of parking brake control module wiring harness and connect if necessary. Replace the control module if necessary. Refer to Electronic Parking Brake Control Module Description . Did you complete the replacement?	Go to Step 13	-
13	Install or connect any components that were removed or disconnected during diagnosis. Did you complete the operation?	Parking Brake System OK Go to Symptoms - Park Brake	-