Defect Code 12
Defect Code 12:
*D* Defect code memory: 12 Keypad:
Possible cause: Short to ground
Effect of defect: Keypad signal is ignored
Troubleshooting: Check wire from control unit connector X 18131 Pin 9 via connector memory X 678 B Pin 12 to keypad (memory switch) and repair if necessary; if wire is OK, check keypad (memory switch) and repair if necessary.