Diagnostic Test

TEST FOR INTERMITTENT CONDITION
1. Turn the ignition on.
2. Clear all Instrument Cluster DTCs.
3. Turn the Courtesy Lamps on.
4. Using the scan tool, read DTCs.
  Does the scan tool read: B161A-COURTESY/DOME LAMP CONTROL CIRCUIT?
  
  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 (M22) COURTESY LAMPS DRIVER CIRCUIT FOR A SHORT TO GROUND

Fig 1: Checking Courtesy Lamps Driver Circuit For A Short To Ground
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the Instrument Cluster C2 harness connector.
3. Measure the resistance between the (M22) Courtesy Lamp Driver circuit and ground.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Repair the (M22) Courtesy Lamp Driver 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 3
CHECK THE (M22) COURTESY LAMPS DRIVER CIRCUIT FOR AN OPEN

Fig 2: Checking Courtesy Lamps Driver Circuit For An Open
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the Instrument Cluster C2 harness connector.
3. Turn the ignition on.
4. Measure the voltage of the (M22) Courtesy Lamp Driver circuit.
  Is the voltage below 10.0 Volts?
  
  Yes
  - Repair the (M22) Courtesy Lamp Driver circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
  No
  - Replace the Instrument Cluster in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .