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Home >> Dodge and Ram >> 2015 >> Durango SXT, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 203 (Body Control Module (BCM) - DTCS B2119-15 To U1433-24) >> DTC Troubleshooting >> U0231-00- Lost Communication With Light Rain Sensing Module >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2016 Dodge Durango. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FOR AN ACTIVE DTC 
    1. Turn the ignition on.
    2. With the scan tool, read DTCs.

      Does the scan tool display this DTC as active?

      Yes 

      • Go To  2

      No 

      • Test complete. The condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and correct pin tension.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  2. CHECK THE (F982) FUSED IGNITION (RUN/ACC) CIRCUIT FOR AN OPEN 
    1. Turn the ignition off.
    2. Disconnect the Light Rain Sensing Module (LRSM) harness connector.
    3. Turn the ignition on.
    4. Using a 12 - volt test light connected to ground, check the (F982) Fused Ignition (Run/Acc) circuit.

      Does the test light illuminate brightly?

      Yes 

      • Go To  3

      No 

      • Repair the open or short to ground in the (F982) Fused Ignition (Run/Acc) circuit.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  3. CHECK THE (Z912) GROUND CIRCUIT FOR AN OPEN 
    1. Turn the ignition off.
    2. Using a 12 - volt test light connected to 12 - volts, check the (Z912) Ground circuit.

      Does the test light illuminate brightly?

      Yes 

      • Go To  4

      No 

      • Repair the open in the (Z912) Ground circuit.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  4. CHECK THE (D402) LIN BUS CIRCUIT FOR AN OPEN 
    1. Turn the ignition on.
    2. Measure the voltage between ground and the (D402) LIN BUS circuit.

      Is the voltage above 5.0 volts?

      Yes 

      No 

      • Repair the open in the (D402) LIN Bus circuit.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .