B1D4C–MEMORY SWITCH INPUT CIRCUIT HIGH – DDM
For a complete wiring diagram Refer to Section 8W.
- When Monitored:
Continuously
- Set Condition:
If the Driver Door Module senses voltage is greater than 5.25 volts for more than 60 ms on the (P439) Memory Select Switch Mux circuit or the (G160/G161) Right/Left Door Lock Switch Mux circuit.
| Possible Causes |
| (P439) MEMORY SELECT SWITCH MUX CIRCUIT SHORTED TO VOLTAGE |
| (G161) LEFT DOOR LOCK SWITCH MUX CIRCUIT SHORTED TO VOLTAGE (LHD) |
| (G160) RIGHT DOOR LOCK SWITCH MUX CIRCUIT SHORTED TO VOLTAGE (RHD) |
| DRIVER WINDOW/DOOR LOCK SWITCH |
| DRIVER DOOR MODULE |
Diagnostic Test
1.TEST FOR INTERMITTENT CONDITIONDoes the scan tool display: B1D4C MEMORY SWITCH INPUT CIRCUIT HIGH?
Yes
- Go To 2
No
- The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
- Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
2.CHECK THE DRIVER WINDOW/DOOR LOCK SWITCH FOR A SHORT TO VOLTAGE
Does the scan tool display: B1D4C MEMORY SWITCH INPUT CIRCUIT HIGH?
Yes
- Go To 3
No
- Replace the Driver Window/Door Lock Switch in accordance with the Service Information.
- Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
3.CHECK THE (G160/G161) RIGHT/LEFT DOOR LOCK SWITCH MUX CIRCUIT FOR A SHORT TO VOLTAGE
Is the voltage above 0.2 volts?
Yes
- Repair the (G160/G161) Right/Left Door Lock Switch Mux circuit for a short to voltage.
- Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
No
- Go To 4
4.CHECK THE (P439) MEMORY SELECT SWITCH MUX CIRCUIT FOR A SHORT TO VOLTAGE
Is the voltage above 0.2 volts?
Yes
- Repair the (P439) Memory Select Switch Mux circuit for a short to voltage.
- Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).
No
- Replace the Driver Door Module in accordance with the Service Information.
- Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).