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Diagnostic Test

  1. CHECK FOR AN ACTIVE DTC 
    1. With the scan tool, read ESL DTCs and record on the repair order.
    2. Record the Environmental Data.
    3. With the scan tool, erase DTCs.
    4. Using the recorded Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
    5. With the scan tool, read ESL DTCs.

      Did the DTC return?

      Yes 

      • Go To  2

      No 

      • Go To  9
  2. CHECK FOR BCM DTCS 
    1. With the scan tool, check for BCM DTCs.

      Are any BCM voltage related DTCs set?

      Yes 

      No 

      • Go To  3
  3. CHECK F49 FUSE IN BCM 
    1. Turn the ignition off.
    2. Check the F49 fuse in BCM for an open.

      Is the fuse open?

      Yes 

      • Go To  6

      No 

      • Go To  4
  4. CHECK KL15 (IGNITION FEED) CIRCUIT VOLTAGE 
    1. If necessary, reinstall the F49 Fuse in the BCM.
    2. Disconnect the ESL Module harness connector.
    3. Turn the ignition on.
    4. Measure the voltage between ground and the (KL15) Ignition Feed circuit at the ESL Module harness connector.

      Is the voltage above 9.5 volts?

      Yes 

      • Go To  5

      No 

      • Go To  8
  5. CHECK (KL15) IGNITION FEED CIRCUIT FOR A SHORT TO ANOTHER CIRCUIT 
    1. Turn the ignition off.
    2. Disconnect the BCM harness connector.
    3. Check for continuity between the ESL (KL15) Ignition Feed circuit and all other circuits at the BCM harness connector.

      Is there continuity between the (KL15) Ignition Feed circuit and any other circuit?

      Yes 

      • Repair the (KL15) Ignition Feed circuit for a short to another circuit.
      • Perform the ESL VERIFICATION TEST. Refer to STANDARD PROCEDURES .

      No 

      • Go To  10
  6. CHECK (KL15) IGNITION FEED CIRCUIT FOR A SHORT TO GROUND 
    1. Disconnect the ESL Module harness connector.
    2. Remove the F49 Fuse from the BCM.
    3. Check for continuity between ground and the (KL15) Ignition Feed circuit at the ESL harness connector.

      Is there continuity between ground and the (KL15) Ignition Feed circuit?

      Yes 

      • Repair the (KL15) Ignition Feed circuit for a short to ground and replace the Fuse.
      • Perform the ESL VERIFICATION TEST. Refer to STANDARD PROCEDURES .

      No 

      • Go To  7
  7. CHECK FOR A SHORTED BCM 
    1. Install a new F49 Fuse in the BCM.
    2. Turn the ignition on.
    3. Check the F49 fuse for an open.

      Is the fuse open?

      Yes 

      • Go To  11

      No 

      • Go To  10
  8. CHECK (KL15) IGNITION FEED CIRCUIT FOR AN OPEN OR HIGH RESISTANCE 
    1. Turn the ignition off.
    2. Disconnect the BCM harness connector.
    3. Measure the resistance of the (KL15) Ignition Feed circuit between the ESL Module harness connector and the BCM harness connector.

      Is the resistance below 3.0 Ohms?

      Yes 

      • Go To  11

      No 

      • Repair the (KL15) Ignition Feed circuit for an open or high resistance.
      • Perform the ESL VERIFICATION TEST. Refer to STANDARD PROCEDURES .
  9. CHECK WIRING AND CONNECTORS 
    1. The conditions necessary to set the DTC are not present at this time.
    2. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
    3. Wiggle the wires while checking for shorted and open circuits.
    4. Check for any Service Bulletins that may apply.

      Were there any problems found?

      Yes 

      No 

      • Test complete.
  10. CHECK ESL RELATED HARNESS CONNECTIONS 
    1. Disconnect all Electronic Steering Lock (ESL) harness connectors.
    2. Disconnect all related in-line harness connections (if equipped).
    3. Disconnect the related component harness connectors.
    4. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
      • Proper connector installation.
      • Damaged connector locks.
      • Corrosion.
      • Other signs of water intrusion.
      • Weather seal damage (if equipped).
      • Bent terminals.
      • Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
      • Terminals that have been pushed back into the connector cavity.
      • Perform a terminal drag test on each connector terminal to verify proper terminal tension.

      Repair any conditions that are found.

    5. Reconnect all ESL harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
    6. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
    7. Reconnect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
    8. With the scan tool, erase DTCs.
    9. Using the recorded Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
    10. With the scan tool, read ESL DTCs.

      Did the DTC return?

      Yes 

      • Replace the Electronic Steering Lock (ESL) in accordance with the Service Information.
      • Perform the ESL VERIFICATION TEST. Refer to STANDARD PROCEDURES .

      No 

  11. CHECK BCM RELATED HARNESS CONNECTIONS 
    1. Disconnect all BCM harness connectors.
    2. Disconnect all related in-line harness connections (if equipped).
    3. Disconnect the related component harness connectors.
    4. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
      • Proper connector installation.
      • Damaged connector locks.
      • Corrosion.
      • Other signs of water intrusion.
      • Weather seal damage (if equipped).
      • Bent terminals.
      • Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
      • Terminals that have been pushed back into the connector cavity.
      • Perform a terminal drag test on each connector terminal to verify proper terminal tension.

      Repair any conditions that are found.

    5. Reconnect all BCM harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
    6. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
    7. Reconnect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
    8. With the scan tool, erase DTCs.
    9. Using the recorded Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
    10. With the scan tool, read BCM DTCs.

      Did the DTC return?

      Yes 

      No 

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