Diagnostic Test

WARNING: This page is about a different car, the 2011 RAM Dakota. However, it is still accessible from the selected car via links, so may be relevant.

INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, clear all FCM DTCs.
3. Turn the Wipers on.
4. With the scan tool, read the Wiper DTCs.
  Does the scan tool read: B2304-WIPER PARK SWITCH INPUT CIRCUIT LOW?
  
  Yes
  - Go To 2.
  No
  - The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
MULTIFUNCTION SWITCH
1. Turn the ignition off.
2. Disconnect the Multifunction Switch connector.
3. Measure the internal resistance of the Multifunction Switch between cavity 1 and 4 of the switch.
  Is the resistance above 5.0 Ohms?
  
  Yes
  - Replace the Multifunction Switch in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 3.
FRONT CONTROL MODULE

Fig 1: Measuring Resistance Between Ground & Front Wiper Park Switch Sense Circuit
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the Multifunction Switch connector.
3. Disconnect the FCM C1 harness connector.
4. Measure the resistance between ground and the (W7) Front Wiper Park Switch Sense circuit.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Repair the (W7) Front Wiper Park Switch Sense circuit for a short condition.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Replace the Front Control Module in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .