Brake Lamp Switch

Fig 1: Testing Brake Lamp Switch In Released Position

Courtesy of CHRYSLER LLC

NOTE: Before proceeding with this diagnostic test, verify the adjustment lever on the back of the switch is in the adjusted position. If the lever is in the non-adjusted (diagonal) position it may have never been adjusted. For adjustment, see Electrical/Lamps/Lighting - Exterior/SWITCH, Stop Lamp - Installation .

If the electrical circuit has been tested and the brake lamp switch is suspected of being damaged or inoperative, it can be tested using the following method.

Remove the brake lamp switch from the vehicle. See Electrical/Lamps/Lighting - Exterior/SWITCH, Stop Lamp - Removal .
With the switch in the released position (plunger extended), use an ohmmeter to test each of the three internal switches as shown in Fig 1. You should achieve the results as listed in the figure.

Fig 2: Testing Brake Lamp Switch In Depressed Position
Courtesy of CHRYSLER LLC
Gently push the plunger on the brake lamp switch in until it stops.
With the switch in this depressed position (plunger pushed in), use an ohmmeter to test each of the three internal switches as shown in Fig 2. You should achieve the results as listed in the figure.

If you do not achieve the results as listed in both figures, the switch must be replaced. Refer to Removal .

If the switch is found to be operating properly, it may require adjustment. Do not remove the switch. For adjustment, see Electrical/Lamps/Lighting - Exterior/SWITCH, Stop Lamp - Installation .