Diagnostic Test
- TEST FOR INTERMITTENT CONDITION
- Turn the ignition on.
- With the scan tool, record and erase DTCs.
- Press the Memory Set Switch several time in all positions.
- Cycle the ignition from on to off 3 times.
- Turn the ignition on.
- With the scan tool, read DTCs.
Does the scan tool display: B1D4C-MEMORY SWITCH INPUT CIRCUIT HIGH?
Yes
- Go to step 2
No
- The conditions that caused this code to set are not present at this time. Using the SYSTEM WIRING DIAGRAMS as a guide, inspect the wiring and connectors.
- Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
- CHECK THE DRIVER WINDOW/DOOR LOCK SWITCH FOR A SHORT TO VOLTAGE
- With the scan tool, erase DTCs.
- Turn the ignition off.
- Disconnect the Driver Window/Door Lock Switch C2 connector.
- Cycle the ignition 3 times.
- Turn the ignition on.
- With the scan tool, read DTCs.
Does the scan tool display: B1D4C-MEMORY SWITCH INPUT CIRCUIT HIGH?
Yes
- Go to step 3
No
- Replace the Driver Window/Door Lock Switch in accordance with the Service Information.
- Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
- CHECK THE (G160/G161) RIGHT/LEFT DOOR LOCK SWITCH MUX CIRCUIT FOR A SHORT TO VOLTAGE
- Turn the ignition off.
- Disconnect the Driver Door Module C2 connector.
- Turn the ignition on.
- Measure the voltage of the (G160/G161) Right/Left Door Lock Switch Mux circuit.
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 the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
No
- Go to step 4
- CHECK THE (P439) MEMORY SELECT SWITCH MUX CIRCUIT FOR A SHORT TO VOLTAGE
- Turn the ignition off.
- Disconnect the Driver Door Module C3 connector.
- Turn the ignition on.
- Measure the voltage of the (P439) Memory Select Switch Mux circuit.
Is the voltage above 0.2 volts?
Yes
- Repair the (P439) Memory Select Switch Mux circuit for a short to voltage.
- Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
No
- Replace the Driver Door Module in accordance with the Service Information.
- Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .