Durango 2WD V6-3.7L (2009)
Parking Brake Warning Switch: Testing and Inspection
PARK BRAKE SWITCH
WARNING: To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS) before
attempting any steering wheel, steering column, airbag, seat belt tensioner, impact sensor or instrument panel component
diagnosis or service. Disconnect and isolate the negative battery (ground) cable. Wait two minutes for the system capacitor to
discharge before performing further diagnosis or service. On vehicles equipped with the optional Hybrid Electric Vehicle (HEV)
system, a technician trained in proper HEV service safety procedures must also remove the high voltage service disconnect from
the high voltage battery pack. This is the only sure way to disable the SRS. Failure to take the proper precautions could result in
accidental airbag deployment. Failure to follow these instructions may result in possible serious or fatal injury.
NOTE: If the brake indicator stays ON with the ignition switch in the ON position and the park brake released, or comes ON while driving,
the brake system must be diagnosed and repaired prior to performing the following tests. See: Brakes and Traction Control/Testing and
Inspection . If no brake system problem is found, the following procedures will help to locate a shorted or open park brake switch
sense circuit, or an ineffective park brake switch.
INDICATOR ILLUMINATES DURING BULB TEST, BUT DOES NOT WHEN PARK BRAKE APPLIED
1. Disconnect and isolate the battery negative cable. On vehicles equipped with the optional Hybrid Electric Vehicle (HEV) system, a technician
trained in proper HEV service safety procedures must also remove the high voltage service disconnect from the high voltage battery pack.
Disconnect the body wire harness connector for the park brake switch from the switch terminal. Apply the parking brake. Check for continuity
between the park brake switch terminal and a good ground. There should be continuity. If OK, go to 2. If not OK, replace the ineffective park
brake switch.
2. Disconnect the instrument panel wire harness connector (Connector C1) for the instrument cluster from the cluster connector receptacle. Check for
continuity between the park brake switch sense circuit cavities of the body wire harness connector for the park brake switch and the instrument
panel wire harness connector for the instrument cluster. There should be continuity. If not OK, repair the open park brake switch sense circuit
between the park brake switch and the instrument cluster as required.
INDICATOR REMAINS ILLUMINATED - BRAKE SYSTEM CHECKS OKAY
1. Disconnect and isolate the battery negative cable. On vehicles equipped with the optional Hybrid Electric Vehicle (HEV) system, a technician
trained in proper HEV service safety procedures must also remove the high voltage service disconnect from the high voltage battery pack.
Disconnect the body wire harness connector for the park brake switch from the switch terminal. Check for continuity between the terminal of the
park brake switch and a good ground. There should be no continuity with the park brake released, and continuity with the park brake applied. If
OK, go to 2. If not OK, replace the ineffective park brake switch.
2. Disconnect the instrument panel wire harness connector (Connector C1) for the instrument cluster from the cluster connector receptacle. Check for
continuity between the park brake switch sense circuit cavity of the body wire harness connector for the park brake switch and a good ground.
There should be no continuity. If not OK, repair the shorted park brake switch sense circuit between the park brake switch and the instrument
cluster as required.
