Test E: Delayed Accessory Feature Does Not Operate Properly
- Using New Generation Star (NGS) tester, monitor Driver's Door Module (DDM) PIDs D_DR_DD and P_DR_DD. Open and close doors several times. If PIDs agree with door positions, go to next step. If PIDs do not agree with door positions, go to step 5 .
- Test accessory delay/power window relay. See ACCESSORY DELAY/POWER WINDOW RELAY under COMPONENT TESTS. If relay is okay, go to next step. If relay is defective, replace relay.
- Using NGS tester, perform Lighting Control Module (LCM) self-test. Retrieve and record LCM continuous DTCs. If no LCM DTCs are retrieved, go to next step. If any LCM DTCs are retrieved, perform appropriate test. See LIGHTING CONTROL MODULE DTC INDEX table under DIAGNOSTIC TROUBLE CODE DEFINITIONS in MODULE COMMUNICATIONS NETWORK - TOWN CAR article.
- Disconnect DDM 4-pin harness connector C522. DDM is located behind door panel, in upper front corner of driver door. Remove accessory delay/power window relay from central junction box. Measure resistance between ground and accessory delay/power window relay harness connector terminal No. 86 (Pink wire). See Figure . Wait 10 minutes. If resistance is 10 k/ohms or more after 10 minutes, replace DDM. If resistance is less than 10 k/ohms after 10 minutes, replace LCM.
- Remove passenger's and driver's door ajar switches. Measure resistance between door ajar switch terminals with switch in open and closed positions. Resistance should be 10 k/ohms or more with switch in closed position and less than 5 ohms with switch in open position. If resistance is as specified, replace DDM. If resistance is not as specified, replace appropriate door ajar switch.