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Home >> Chrysler >> 2011 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 497 (Power Top Control Module ( PTCM) - Electrical Diagnostics) >> DTC Troubleshooting >> B18D2-Convertible Top Retracted Position Sensor Circuit Low >> 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 
    1. Turn the ignition on.
    2. With the scan tool, record and erase all PTCM DTCs.
    3. Try to operate the Power Top Switch.
    4. Wait 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. CONVERTIBLE TOP RETRACTED SENSOR 
    1. Turn the ignition off.
    2. Disconnect the Convertible Top Retracted Sensor harness connector.
    3. Turn the ignition on.
    4. With the scan tool, erase all PTCM DTCs.
    5. With the scan tool, check for active PTCM DTCs.

      Does the scan tool display this DTC as active?

      Yes 

      • Go To  3

      No 

      • Replace the Convertible Top Retracted Sensor in accordance with the Service Information.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  3. (Q988) CONVERTIBLE TOP RETRACTED SIGNAL CIRCUIT SHORTED TO GROUND 
    Fig 1: Checking Convertible Top Retracted Signal Circuit For Short To Ground
    GC0123683Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Disconnect the Power Top Module C1 harness connector.
    3. Measure the resistance between Ground and the (Q988) Convertible Top Retracted Signal circuit at the PTCM C1 connector.

      Is the resistance below 10k Ohms?

      No 

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

      Yes 

      • Repair the (Q988) Convertible Top Retracted Signal circuit for a short to ground.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
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