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Diagnosis And Testing - Dimmer Switch

WARNING: This page is about a different car, the 2014 Dodge Journey. However, it is still accessible from the selected car via links, so may be relevant.
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 battery negative (ground) cable, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to take the proper precautions could result in accidental airbag deployment.

Fig 1: Dimmer Switch Connector End View
GC0144602Courtesy of CHRYSLER GROUP, LLC
  1. Remove the dimmer module from the instrument panel. Refer to SWITCH, DIMMER, REMOVAL .
  2. Disconnect the instrument panel wire harness connector from the back of the dimmer module.
  3. Using an ohmmeter, test the resistance between the terminals of the module as shown in the Dimmer Module Tests table.
    DIMMER MODULE TESTS TABLE

    DIMMER MODULE TESTS
    SWITCH POSITION (PINS) RESISTANCE RANGE (OHMS)
    DOME DEFEAT (1 and 4) 8645 - 9555
    PANEL DIMMER 1 (1 and 4) 2565 - 2835
    PANEL DIMMER 2 (1 and 4) 1140 - 1260
    PANEL DIMMER 3 (1 and 4) 646 - 714
    PANEL DIMMER 4 (1 and 4) 417.78 - 426.22
    PANEL DIMMER 5 (1 and 4) 256.5 - 283.5
    PANEL DIMMER 6 (1 and 4) 180.18 - 183.82
    PARADE MODE (1 and 4) 135.63 - 138.37
    DOME ON (1 and 4) 172.26 - 175.74
    AMBIENT DOME DEFEAT (1 and 5) 8645 - 9555
    AMBIENT DIMMER 1 (1 and 5) 2565 - 2835
    AMBIENT DIMMER 2 (1 and 5) 1140 - 1260
    AMBIENT DIMMER 3 (1 and 5) 646 - 714
    AMBIENT DIMMER 4 (1 and 5) 417.78 - 426.22
    AMBIENT DIMMER 5 (1 and 5) 256.5 - 283.5
    AMBIENT DIMMER 6 (1 and 5) 494.01 - 503.99
    HEADLAMP LEVELING 0 (7 and 8) 172.26 - 175.74
    HEADLAMP LEVELING 1 (7 and 8) 198 - 202
    HEADLAMP LEVELING 2 (7 and 8) 575.19 - 586.81
    SWITCH ILLUMINATION (2 and 3) LEDs - SET MULTIMETER TO DIODE MODE - CONNECT PIN 3 TO PLUS (+), CONNECT PIN 2 TO MINUS (-) - LEDs SHOULD BARELY GLOW
  4. If the module fails any of the tests, replace the ineffective dimmer module as required.
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