Diagnostic Test

1. With the scan tool, record and erase the DTCs.
2. Operate the Driver Door Lock Switch in both positions several times.
3. Cycle the ignition from on to off three times.
4. Turn the ignition on.
5. With the scan tool, read the DTCs.

   Does the scan tool display B1804-DRIVER DOOR LOCK/UNLOCK SWITCH CIRCUIT STUCK UNLOCK?

   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 .

Fig 1: Checking Driver Door Lock Switch Shorted To Voltage

Courtesy of CHRYSLER LLC

1. With the scan tool, erase the DTCs.
2. Disconnect the Driver Window/Door Lock Switch connector.
3. Turn the ignition on.
4. With the scan tool, read the DTCs.

   Does the scan tool display DRIVER DOOR LOCK/UNLOCK SWITCH CIRCUIT STUCK UNLOCK?

   Yes 

   • Go to step  3

   No 

   • Replace the Driver Window/Door Lock Switch.
   • Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .

Fig 2: Checking Door Lock Switch MUX Wire Shorted To Ground

Courtesy of CHRYSLER LLC

1. Turn the ignition off.
2. Disconnect the Driver Door Module C2 connector.
3. Measure the resistance between ground and the (G161/LHD) or (G160/RHD) Door Lock Switch Mux circuit in the Driver Door Module connector.

   Is the resistance below 10,000 Ohms?

   Yes 

   • Repair the (G161/LHD) or (G160/RHD) Door Lock Switch Mux circuit for a short to ground.
   • Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .

   No 

   • Go to step  4

Is this vehicle equipped with the Memory System?

Yes 

• Go To  5

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 .

Fig 3: Checking Memory Select MUX Wire Shorted To Ground

Courtesy of CHRYSLER LLC

1. Disconnect the Driver Door Module C3 connector.
2. Measure the resistance between ground and the (P439) Memory Select Switch Mux circuit.

   Is the resistance below 10,000 Ohms?

   Yes 

   • Repair the (P439) Memory Select Switch Mux wire for a short to ground.
   • Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .

   No 

   • Go To  6

Fig 4: Checking Memory Select Switch MUX Circuit Shorted

Courtesy of CHRYSLER LLC

1. Measure the resistance between the (P439) Memory Select Switch Mux circuit and the (G920) Memory Select Switch Return circuit in the Driver Door Module C3 connector.

   Is the resistance below 10,000 Ohms?

   Yes 

   • Go to step  7

   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 .

Fig 5: Checking Memory Select Switch MUX Circuit Shorted

Courtesy of CHRYSLER LLC

1. Disconnect the Memory Selector Switch connector.
2. Measure the resistance between the (P439) Memory Select Switch Mux circuit and the (G920) Memory Select Switch Return circuit in the Driver Door Module C3 connector.

   Is the resistance below 10,000 Ohms?

   Yes 

   • Repair the (P439) Memory Select Switch Mux circuit for a short to the (G920) Memory Select Switch Return circuit.
   • Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .

   No 

   • Replace the Memory Selector Switch.
   • Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .