DTC B1529 Memory Off Switch Short To Battery (B+)
WARNING: This page is about a different car, the 1997 Lincoln Continental. However, it is still accessible from the selected car via links, so may be relevant.
- Ensure Switch Is Not Active - Ensure MEMORY OFF switch is not pressed. Clear Diagnostic Trouble Codes (DTCs). Perform ON-DEMAND SELF-TEST. See ON-DEMAND SELF-TEST in MODULE COMMUNICATIONS NETWORK article. If DTC B1529 is not indicated, go to next step. If DTC B1529 is indicated, go to step 3).
- Ensure Switch Is Not Sticking - Connect New Generation Star (NGS) tester to Data Link Connector (DLC). Set NGS tester to read MEMSSW PID. Press and release MEMORY OFF button several times. If PID indicates that button releases within one second of when switch is released, system is operating normally. Continuous DTC would be set if MEMORY OFF switch was pressed for longer than 2 minutes. If PID indicates that button does not release within one second of when switch is released, replace memory switch and retest system.
- Circuit Test (Brown/Orange Wire) - Unplug connector C506 from Driver's Door Module (DDM). Check DDM connector C506 pin No. 15 (Brown/Orange wire) for voltage. See Fig 1 . If battery voltage exists, go to next step. If battery voltage does not exist, replace DDM and retest system.
- Switch Voltage Test - Unplug memory switch connector. Check connector C506 pin No. 15 (Brown/Orange wire) for voltage. If battery voltage exists, repair short to battery voltage in Brown/Orange wire. If battery voltage does not exist, replace memory switch and retest system.