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 B1802-DRIVER DOOR LOCK/UNLOCK SWITCH 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 .

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 C2 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 HIGH?

   No 

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

   Yes 

   • Go to step  3

Fig 2: Checking Door Lock Switch MUX Wire Short To Voltage

Courtesy of CHRYSLER LLC

1. Disconnect the Driver Door Module C2 connector.
2. Measure the voltage between ground and the (G160) or (G161) Door Lock Switch Mux circuit in the Door Module C2 connector.

   Is there any voltage present?

   Yes 

   • Repair the (G160) or (G161) Left/Right 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

Is this vehicle equipped with the Memory System?

No 

• Replace the Driver Door Module in accordance with service information.
• Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .

Yes 

• Go to step  5

Fig 3: Checking Memory Select MUX Wire Short To Voltage

Courtesy of CHRYSLER LLC

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

   Is there any voltage present?

   Yes 

   • Repair the (P439) Memory Select Switch Mux wire 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 .