Diagnosis And Testing - Headlamp 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: Terminals Of The Switch

Courtesy of CHRYSLER GROUP, LLC

Remove the headlamp switch from the instrument panel. Refer to SWITCH, HEADLAMP, REMOVAL .
Disconnect the instrument panel wire harness connector from the back of the headlamp switch.

Using an ohmmeter, test the resistance between the terminals of the switch as shown in the Headlamp Switch Tests table.

HEADLAMP SWITCH TESTS TABLE

HEADLAMP SWITCH TESTS
SWITCH POSITION (PINS)	*RESISTANCE RANGE (OHMS)
AUTO (3 and 6)	4028.0 - 4452.0
OFF (3 and 6)	1938.0 - 2142.0
PARK (3 and 6)	1073.5 - 1186.5
HEADLAMP (3 and 6)	627.0 - 693.0
FOG LAMP - AUTO (3 and 6)	347.2 - 383.8
FOG LAMP - OFF (3 and 6)	317.7 - 351.1
FOG LAMP - PARK (3 and 6)	280.6 - 310.1
FOG LAMP - HEADLAMP (3 and 6)	236.6 - 261.5
SWITCH ILLUMINATION (4 and 5)	LEDs - SET MULTIMETER TO DIODE MODE - CONNECT PIN 4 TO PLUS (+), CONNECT PIN 5 TO MINUS (-) - LEDs SHOULD BARELY GLOW
*All resistance values are plus or minus 5%.

If the switch fails any of the tests, replace the ineffective headlamp switch as required.