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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 >> C2312-23-Esp Off Switch-Signal Stuck Low >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different variant/trim than selected.
  1. TEST FOR INTERMITTENT CONDITION 
    1. Turn the ignition on.
    2. With the scan tool, record and erase the DTCs.
    3. Activate the Electronic Stability Control (ESC) Switch several times.
    4. Wait 30 seconds.
    5. With the scan tool, read the 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 FOR A STUCK ESC SWITCH 
    1. Check the ESC Switch for anything that may cause a sticking condition. Repair if necessary and check if DTC displays stored. If a sticking condition for the ESC Switch is not found, continue testing.
    2. Turn the ignition off.
    3. Disconnect the ESC Switch connector.
    4. Turn the ignition on.
    5. With the scan tool, read the active DTCs.

      Does the scan tool display this DTC as active?

      Yes 

      • Go To  3

      No 

      • Replace the ESC Switch in accordance with the Service Information.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  3. CHECK THE (S53) ESC SWITCH OFF COMMAND CIRCUIT FOR A SHORT TO GROUND 
    1. Turn the ignition off.
    2. Disconnect the BCM C4 harness connector.
    3. Measure the resistance between ground and the (S53) ESC Switch Off Command circuit.

      Is the resistance below 10K Ohms?

      Yes 

      • Repair the short to ground in the (S53) ESC Switch Off Command circuit.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

      No