Diagnosis And Testing - Lock Switch
WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
- Remove the power switch module and bezel unit from the front door trim panel. Refer to SWITCH, LOCK, REMOVAL .
- Disconnect the door wire harness connector from the power switch module.
- Using an ohmmeter, test the resistance between the terminals of the front door power lock or power window switch as shown in the Power Lock or Power Window
SWITCH TESTS table.NOTE:
The switches in the driver front door switch module not listed in the SWITCH TESTS Tables provide inputs to the Driver Door Module (DDM) over a Local Interface Network (LIN) data bus and cannot be resistance tested. The use of a diagnostic scan tool and the appropriate diagnostic information is required for further testing of those switches.
SWITCH TESTSPOWER LOCK SWITCH TESTS - PASSENGER DOOR SWITCH POSITION (PINS) RESISTANCE RANGE (OHMS) LOCK (4 and 8) 326 - 341 UNLOCK (4 and 8) 99 - 103 NEUTRAL (4 and 8) >1 megohm POWER WINDOW SWITCH TESTS - DRIVER DOOR SWITCH POSITION (PINS) RESISTANCE (OHMS) MASTER LEFT REAR WINDOW UP SWITCH - NEUTRAL (2 and 5) >1 megohm UP SWITCH - UP (2 and 5) <2 DOWN SWITCH - NEUTRAL (2 and 7) >1 megohm DOWN SWITCH - DOWN (2 and 7) <2 MASTER RIGHT REAR WINDOW UP SWITCH - NEUTRAL (2 and 12) >1 megohm UP SWITCH - UP (2 and 12) <2 DOWN SWITCH - NEUTRAL (2 and 14) >1 megohm DOWN SWITCH - DOWN (2 and 14) <2 POWER WINDOW SWITCH TESTS - PASSENGER DOOR SWITCH POSITION (PINS) RESISTANCE RANGE (OHMS) UP (4 and 9) 990 - 1022 AUTO UP (4 and 9) 329 - 349 DOWN (4 and 9) 2970 - 3042 AUTO DOWN (4 and 9) 0 - 12 NEUTRAL (4 and 9) >1 megohm - If a switch fails any of the tests, replace the ineffective front door power switch module and bezel unit as required.