LEMON Manuals: Even more car manuals for everyone
Home >> Chrysler >> 2011 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 497 (Power Top Control Module ( PTCM) - Electrical Diagnostics) >> DTC Troubleshooting >> B2539-Convertible Top Header Latch/Unlatch Limit Switch Correlation >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2013 Dodge Avenger and 2013 Chrysler 200. However, it is still accessible from the selected car via links, so may be relevant.
  1. TEST FOR INTERMITTENT CONDITION 
    NOTE:

    The PTCM will only set this fault code when the top operation times out. Maximum timeout is 30 seconds.

    1. Turn the ignition on.
    2. With the scan tool, record and erase all PTCM DTCs.
    3. Try to operate the Power Top Switch in the open direction for a minimum of 30 seconds.
    4. Try to operate the Power Top Switch in the closed direction for a minimum of 30 seconds.
    5. With the scan tool, read all PTCM DTCs.

      Does the scan tool display this DTC as active?

      Yes 

      • Go To  2

      No 

      • The condition that caused this symptom is currently not present. With the scan tool, check the Environmental Data to help identify the conditions in which the DTC was set. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  2. VERIFY HEADER LATCHED LIMIT SWITCH STATE 
    NOTE:

    Normal switch state with the "Header Latched" would be:

    • Header latched Limit Switch - Active. 

    NOTE:

    Normal switch state with the "Header Unlatched" would be:

    • Header latched Limit Switch - Inactive. 

    1. Using the scan tool, under "Manual Top Movement" actuate the Header Latched and observe the Header Latched Limit Switch state.
    2. Using the scan tool, under "Manual Top Movement" actuate the Header Unlatched and observe the Header latched Limit Switch state.
    3. Compare them with the Notes above.

      Did the Header latched Limit Switch toggle between "Active" and "Inactive"?

      Yes 

      • Go To  3

      No 

      • Go To  4
  3. VERIFY HEADER UNLATCH LIMIT SWITCH STATE 
    NOTE:

    Normal switch state with "Header Unlatched" would be:

    • Header Unlatched Limit Switch - Active 

    NOTE:

    Normal switch state with the "Header Latched" would be:

    • Header Unlatched Limit Switch - Inactive 

    1. Using the scan tool, under "Manual Top Movement" actuate the Header Unlatched and observe the Header Unlatched Limit Switch state.
    2. Using the scan tool, under "Manual Top Movement" actuate the Header Latched and observe the Header Unlatched Limit Switch state.
    3. Compare them with the Notes above.

      Did the Header Unlatched Limit Switch toggle between "Active" and "Inactive"?

      Yes 

      • Condition is not present at this time, refer to DIAGNOSIS AND TESTING for non-trouble code Symptom Based Diagnostics.

      No 

      • Go To  8
  4. HEADER LATCHED LIMIT SWITCH 
    1. Turn the ignition off.
    2. Disconnect the Header Latched Limit Switch harness connector.
    3. Connect an ohmmeter between the leads of the Header Latched Limit Switch
    4. Physically toggle the Header Latched Limit Switch and observe the ohmmeter.

      Does the Header latched Limit Switch change state when toggled?

      Yes 

      • Go To  5

      No 

      • Replace Header Latched Limit Switch in accordance with the service information.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  5. (Q977) HEADER LATCHED LIMIT SWITCH SIGNAL CIRCUIT SHORTED TO GROUND 
    Fig 1: Checking Header Latched Limit Switch Signal Circuit For Short To Ground
    GC0123758Courtesy of CHRYSLER GROUP, LLC
    1. Disconnect the Power Top Control Module C1 harness connector.
    2. Measure the resistance between Ground and the (Q977) Header Latched Limit Switch Signal circuit.

      Is the resistance below 10k Ohms?

      No 

      • Go To  6

      Yes 

      • Repair the (Q977) Header Latched Limit Switch Signal circuit for a short to ground.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  6. (Q977) HEADER LATCHED LIMIT SWITCH SIGNAL CIRCUIT SHORTED TO THE (Q978) HEADER UNLATCHED LIMIT SWITCH SIGNAL CIRCUIT 
    Fig 2: Checking Header Latched Limit Switch Signal Circuit
    GC0123759Courtesy of CHRYSLER GROUP, LLC
    1. Disconnect the Header Unlatched Limit Switch harness connector.
    2. Measure the resistance between the (Q977) Header Latched Limit Switch Signal circuit and the (Q978) Header Unlatched Limit Switch Signal circuit.

      Is the resistance below 10k Ohms?

      No 

      • Go To  7

      Yes 

      • Repair the (Q977) Header Latched Limit Switch Signal circuit for a short to the (Q978) Header Unlatched Limit Switch Signal circuit.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  7. TEST THE CONVERTIBLE TOP 
    1. Re-connect all switches and the PTCM module connectors.
    2. Turn the ignition on.
    3. With the scan tool, erase all PTCM DTCs.
    4. With the power top switch, operate the top to the full Open and Locked position and then the full Closed and Latched position.
    5. With the scan tool, read the DTCs.

      Does the scan tool display: B2539-CONVERTIBLE TOP HEADER LATCH/UNLATCH LIMIT SWITCH CORRELATION as "Active"?

      Yes 

      • Replace the Power Top Control Module in accordance with the Service Information.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Replace the Header latched Limit Switch in accordance with service information. In order to set this code the switch was evidently stuck but was freed when it was toggled.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  8. HEADER UNLATCHED LIMIT SWITCH 
    1. Turn the ignition off.
    2. Disconnect the Header Unlatched Limit Switch harness connector.
    3. Connect an ohmmeter between the leads of the Roof Header Unlatched Limit Switch.
    4. Physically toggle the Roof Header Unlatched limit Switch and observe the ohmmeter.

      Does the Header Unlatched Limit Switch change state when toggled?

      Yes 

      • Go To  9

      No 

      • Replace the Header Unlatched Limit Switch in accordance with the Service Information.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  9. (Q978) HEADER UNLATCHED LIMIT SWITCH SIGNAL CIRCUIT SHORTED TO GROUND 
    Fig 3: Checking Header Unlatched Limit Switch Signal Circuit For Short To Ground
    GC0123760Courtesy of CHRYSLER GROUP, LLC
    1. Disconnect the Power Top Control Module C1 harness connector.
    2. Measure the resistance between Ground and the (Q978) Header Unlatched Limit Switch Signal circuit.

      Is the resistance below 10k Ohms?

      No 

      • Go To  10

      Yes 

      • Repair the (Q978) Header Unlatched Limit Switch Signal circuit for a short to ground.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  10. (Q977) HEADER LATCHED LIMIT SWITCH SIGNAL CIRCUIT SHORTED TO THE (Q978) HEADER UNLATCHED LIMIT SWITCH SIGNAL CIRCUIT 
    Fig 4: Checking Header Latched Limit Switch Signal Circuit
    GC0123759Courtesy of CHRYSLER GROUP, LLC
    1. Disconnect the Header Latched Limit Switch harness connector.
    2. Measure the resistance between the (Q977) Header latched Limit Switch Signal circuit and the (Q978) Unlatched Header Limit Switch Signal circuit.

      Is the resistance below 10k Ohms?

      No 

      • Go To  11

      Yes 

      • Repair the (Q977) Header latched Limit Switch Signal circuit for a short to the (Q978) Unlatched Header Limit Switch Signal circuit.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  11. TEST THE CONVERTIBLE TOP 
    1. Re-connect all switches and the PTCM module connectors.
    2. Turn the ignition on.
    3. With the scan tool, erase all PTCM DTCs.
    4. Operate the top to the full Open and Locked position and then the full Closed and Latched position.
    5. With the scan tool, read DTCs.

      Does the scan tool display: B2539-CONVERTIBLE TOP HEADER LATCH/UNLATCH LIMIT SWITCH CORRELATION as "Active"?

      Yes 

      • Replace the Power Top Control Module in accordance with the Service Information.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Replace the Roof Unlatched Limit Switch in accordance with service information. In order to set this code the switch was evidently stuck but was freed when it was toggled.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
scientia non olet · About LEMON Manuals