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All Doors Fail To Lock From Any Switch

  1. Ensure driver's door ajar switch is operational. For diagnosis, see ILLUMINATION/INTERIOR LIGHTS article. Ensure parking lights are operational. For diagnosis, see EXTERIOR LIGHTS article. If driver's door ajar switch and parking lights are operational, go to next step.
  2. Connect scan tool to Data Link Connector (DLC), under lower left side of instrument panel. Remove ignition key. Select KEY-IN-IGNITION status. If scan tool displays CLOSED, go to next step. If scan tool does not display CLOSED, go to step  6 .
  3. Disconnect Black 14-pin ignition switch connector. See Figure . Using scan tool, select KEY-IN-IGNITION status. If scan tool displays CLOSED, go to next step. If scan tool does not display CLOSED, replace ignition switch. See STEERING COLUMN SWITCHES - DAKOTA & DURANGO article.
  4. Disconnect Gray 26-pin Central Timer Module (CTM) connector C1. CTM is located behind left side kick panel. Using DVOM, measure resistance between ground and Gray 26-pin CTM connector C1 terminal No. 19 (Light Blue wire). See Figure . If resistance is more than 1000 ohms, go to next step. If resistance is 1000 ohms or less, repair short to ground in Light Blue wire between Gray 26-pin CTM connector C1 terminal No. 19 and Black 14-pin ignition switch connector terminal No. 5. See Figure .
  5. Replace CTM. See CENTRAL TIMER MODULE  under REMOVAL & INSTALLATION.
  6. Disconnect Gray 16-pin CTM connector C2. Using DVOM, measure resistance between ground and Gray 16-pin CTM connector C2 terminal No. 4 (Orange/Black wire). See Figure . If resistance is more than 100 ohms, go to step  5 . If resistance is 100 ohms or less, repair short to ground in Orange/Black wire between Gray 16-pin CTM connector C2 terminal No. 4 and door lock motors.
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