DTC B1529: Memory Set Switch Circuit Short To Battery
WARNING: This page is about a different car, the 1997 Lincoln Mark VIII. However, it is still accessible from the selected car via links, so may be relevant.
- Turn ignition on. Connect New Generation Star (NGS) tester to Data Link Connector (DLC). Set NGS tester to read Driver Door Module PID MEM_OFF. If PID MEM_OFF reads ACTIVE, go to next step. If PID MEM_OFF does not read ACTIVE, go to step 4).
- Turn ignition off. Disconnect DDM connector C456. Turn ignition on. Check voltage at connector C456 terminal No. 18 (Brown/Orange wire). If battery voltage exists, go to next step. If battery voltage does not exist, replace DDM and retest.
- Turn ignition off. Disconnect Memory Off/Recall switch connector C515. Turn ignition on. Check voltage at connector C456 terminal No. 18 (Brown/Orange wire). If battery voltage exists, repair Brown/Orange wire short to power. If battery voltage does not exist, replace Memory Off/Recall switch and retest.
- Set NGS tester to read DDM PID MEM1_SW. If PID MEM1_SW reads ON, go to next step. If PID MEM1_SW does not read ON, go to step 7).
- Turn ignition off. Disconnect DDM connector C456. Turn ignition on. Check voltage at connector C456 terminal No. 19 (Brown/Light Green wire). If battery voltage exists, go to next step. If battery voltage does not exist, replace DDM and retest.
- Turn ignition off. Disconnect Memory Off/Recall switch connector C515. Turn ignition on. Check voltage at connector C456 terminal No. 19 (Brown/Light Green wire). If battery voltage exists, repair Brown/Light Green wire short to power. If battery voltage does not exist, replace Memory Off/Recall switch and retest.
- Set NGS tester to read DDM PID MEM2_SW. If PID MEM2_SW reads ON, go to next step. If PID MEM2_SW does not read ON, go to step 10).
- Turn ignition off. Disconnect DDM connector C456. Turn ignition on. Check voltage at connector C456 terminal No. 7 (Black/Orange wire). If battery voltage exists, go to next step. If battery voltage does not exist, replace DDM and retest.
- Turn ignition off. Disconnect Memory Off/Recall switch connector C515. Turn ignition on. Check voltage at connector C456 terminal No. 7 (Black/Orange wire). If battery voltage exists, repair Black/Orange wire short to power. If battery voltage does not exist, replace Memory Off/Recall switch and retest.
- Set NGS tester to read DDM PID MEM_OFF, DDM PID MEM1_SW and DDM PID MEM2_SW. Press each button on Memory Off/Recall switch while monitoring PIDs. If each PID changes while corresponding button is pressed, and returns to normal when button is released, replace DDM and retest. If PIDs do not change properly, replace Memory Off/Recall switch and retest.