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Step
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Action
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Yes
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No
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DEFINITION: This diagnostic table is designed to diagnose ONLY the 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.
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1
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Were you sent here from a Hydraulic Brake Symptom Table?
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Go to
Step 3
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Go to
Step 2
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2
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Were you sent here from a Park Brake Symptom Table?
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Go to
Step 3
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Go to
Diagnostic Starting Point - Vehicle
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3
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2.
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Shift the transmission into NEUTRAL.
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3.
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With the park brake RELEASED, attempt to rotate the rear wheels to check the rear brakes for a significant amount of drag.
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Do the rear brakes have a significant amount of drag?
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Go to
Step 8
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Go to
Step 4
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4
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1.
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Shift the transmission into NEUTRAL.
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3.
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Attempt to rotate the rear wheels to check the rear brakes for a significant amount of drag.
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Do the rear brakes have a significant amount of drag?
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Go to
Step 17
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Go to
Step 5
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5
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Visually check the park brake cable connections and the cables that are accessible on the UNDERSIDE of the vehicle for disconnections and/or damage.
Were any or the park brake cables disconnected and/or damaged?
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Go to
Step 6
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Go to
Step 7
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6
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Reconnect or replace the park brake cables as necessary. Refer to the following procedures as necessary:
Did you complete the repair and/or replacement?
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Go to
Step 17
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-
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7
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Check the adjustment of the park brake and adjust as necessary. Refer to
Parking Brake Adjustment
.
Did you find and correct the condition?
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Go to
Step 17
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Go to
Step 8
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8
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Warning
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Do not depress the brake pedal with the brake rotors and/or the brake drums removed, or with the brake calipers repositioned away from the brake rotors, or damage to the brake system may result.
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2.
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Inspect the park brake shoe hardware for looseness, damaged, broken or missing components.
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3.
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Check the park brake actuators for a seized condition.
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Does the park brake hardware and/or the park brake actuators require replacement?
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Go to
Step 9
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Go to
Step 10
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9
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Did you complete the replacement?
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Go to
Step 17
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-
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10
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With the aid of an assistant, apply and release the parking brake while observing the cables for free movement.
Do the park brake cables move freely?
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Go to
Step 11
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Go to
Step 13
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11
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Check the adjustment of the park brake and adjust as necessary. Refer to
Parking Brake Adjustment
.
Did you find and correct the condition?
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Go to
Step 17
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Go to
Step 12
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12
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1.
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With the transmission still in NEUTRAL, apply the park brake.
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2.
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Attempt to rotate the rear wheels to check the rear brakes for a significant amount of drag.
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3.
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Release the park brake.
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4.
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Rotate the rear wheels to check the rear brakes for a significant reduction of drag.
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Did the park brake apply and release properly?
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Go to
Step 17
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Go to
Symptoms - Park Brake
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13
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Disconnect the park brake cable connections that are accessible on the UNDERSIDE of the vehicle one at a time and check each cable for free movement.
Do any of the park brake cables accessible on the underside of the vehicle require replacement?
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Go to
Step 14
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Go to
Step 15
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14
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Replace any of the park brake cables that do not have free movement (not releasing properly). Refer to the following procedures as necessary:
Did you complete the replacement?
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Go to
Step 17
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-
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15
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Inspect the electronic parking brake control module for proper operation and replace as necessary. Refer to
Electronic Parking Brake Control Module Replacement
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Did you find and correct the condition?
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Go to
Step 17
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Go to
Step 16
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16
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Did you complete the replacement and adjustment?
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Go to
Step 17
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Go to
Symptoms - Park Brake
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17
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Install or connect any components that were removed or disconnected during diagnosis.
Did you complete the operation?
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Park Brake System OK
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Go to
Symptoms - Park Brake
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