Stop Lamp Switch

WARNING: This page is about a different car, the 2006 Dodge Magnum, 2006 Dodge Charger, and 2006 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Before proceeding with this diagnostic test, verify the adjustment of the stop lamp switch to rule out misadjustment. (Refer to ELECTRICAL/LAMPS/LIGHTING - EXTERIOR/STOP LAMP SWITCH - ADJUSTMENTS)

If the electrical circuit has been tested and the stop lamp switch is suspected of being faulty, it can be tested using the following method.

Remove the switch from the vehicle. (Refer to ELECTRICAL/LAMPS/LIGHTING - EXTERIOR/STOP LAMP SWITCH - REMOVAL)

Fig 1: Switch Test - Released
Courtesy of DAIMLERCHRYSLER CORP.
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 indicated in the figure.

Fig 2: Switch Test - Depressed Position
Courtesy of DAIMLERCHRYSLER CORP.
Gently push the plunger on the stop lamp switch in until it stops.
With the switch in the 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 indicated in the figure.
If you do not achieve the results as indicated in both figures, the switch is faulty and must be replaced.
Install the switch in the vehicle. (Refer to ELECTRICAL/LAMPS/LIGHTING - EXTERIOR/STOP LAMP SWITCH - INSTALLATION)