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Home >> Fiat >> 2019 >> 500 Lounge, Automatic Trans >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Body Control Module (BCM) - DTCS B10AD-19 To U1749-87 - 500 - Except Electric >> DTC Troubleshooting >> U1703-86-Implausible Data Received From IPC >> Diagnostic Test

Diagnostic Test

  1. CHECK FOR AN ACTIVE DTC 
    1. With the scan tool, read DTCs.

      Is the DTC active?

      Yes 

      • Go To  2

      No 

      • Test complete.
  2. CHECK THE CAN LINE WIRING BETWEEN THE IPC AND THE ORC 
    1. Check the CAN connections and in particular that there are no open or short circuit problems.
    2. Check that the connector is correctly connected to the control units and there are no faulty connections in the intermediate joint.

      Was there a fault detected?

      Yes 

      • Reconnect the connectors or repair circuit faults according to service procedures.

      No 

      • Go To  3
  3. TEST THE POWER AND GROUND CIRCUITS TO THE IPC AND THE ORC 
    1. Check the related power and ground circuits the IPC and the ORC.

      Was there a fault found in any of the power or ground circuits?

      No 

      • Go To. Refer to  4.

      Yes 

      • Repair affected circuits according to service procedures.
  4. CHECK IPC AND ORC OPERATION 
    1. Check the operation of both modules.

      Was a fault detected?

      Yes 

      • Replace the affect module.
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