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Home >> Fiat >> 2016 >> 500 Turbo, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 (Body Control Module (BCM) - DTCS B226A-00 To U1493-00 - 500 - Electric) >> DTC Troubleshooting >> B277C-19-Vehicle Pedestrian Alert Module High Side Driver - OVERCURRENT >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different variant/trim than selected.
  1. CHECK FOR AN ACTIVE DIAGNOSTIC TROUBLE CODE (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 QVPM FOR AN INTERNAL SHORT TO GROUND 
    1. Turn the ignition off.
    2. Disconnect the QVPM harness connector.
    3. Turn the ignition on.
    4. With the scan tool, read DTCs.

      Does the scan tool display this DTC as active?

      Yes 

      • Go To  3

      No 

  3. CHECK THE (X992) QVPM CANCEL SWITCH FOR A SHORT TO GROUND 
    1. Turn the ignition off.
    2. Disconnect the BCM C3 harness connector.
    3. Turn the ignition on.
    4. Measure the resistance between ground and the (X992) QVPM Cancel Switch circuit.

      Is the resistance above 10k Ohms?

      Yes 

      No 

      • Repair the (X992) QVPM Cancel Switch circuit for a short to ground.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .