B1300
DTC B1300
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category.
DTC Descriptors
DTC B1300
- Convertible Top Header Latched Sensor Circuit
Diagnostic Fault Information
Circuit/System Description
The folding top control (FTC) module checks the circuits listed, at least once every 300 milliseconds:
* Latched switch signal of the front latched switch.
* Unlatched switch signal of the front unlatched switch.
The front latched switch will close to B+, signaling the FTC module when the front latch has latched and secured the folding top when it is in either the closed or stowed position. The front unlatched switch will close to B+, signaling the FTC module when the folding top latch is in the fully unlatched position. This happens when the folding top is between the closed and stowed positions.
Conditions for Running the DTC
The battery voltage is between 9-16 volts.
Conditions for Setting the DTC
The FTC module detects inputs from both the front latched and front unlatched switch signal circuits being active at the same time.
Action Taken When the DTC Sets
* The FTC module disables all folding top functions.
* The FTC module sends a class 2 message to the driver information center (DIC), displaying: TOP NOT SECURE.
Conditions for Clearing the DTC
* This DTC will clear on the current status after the condition for setting the fault is corrected.
* A history DTC will clear after 50 consecutive ignition cycles without a fault present.
Diagnostic Aids
The Rear Compartment Lid is also referenced as the Deck Lid for this vehicle.
Reference Information
Schematic Reference
Folding Top Schematics ([1][2]Convertible Top)
Connector End View Reference
Component Connector End Views (Connector Views)
Description and Operation
Power Folding Top Description and Operation (Power Folding Top Description and Operation)
Electrical Information Reference
* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)
Scan Tool Reference
Control Module References (Programming and Relearning) for Scan Tool Information
Circuit/System Verification
1. When the folding top is in the fully closed or stowed position, the front unlatch switch is open, the front latch switch is closed to B+ and the scan tool Header Latch Limit Switches parameter should be Latched.
• If not the specified value, refer to the Unlatched Position Switch Test.
2. When the folding top is unlatched or in between the closed and stowed positions, the front latch switch is open, the front unlatched switch is closed to B+ and the scan tool Header Latch Limit Switches parameter should be Unlatched.
• If not the specified value, refer to the Latched Position Switch Test.
Circuit/System Testing
Unlatched Position Switch Test
1. Open the hydraulic fluid bypass valve located above the pump motor by turning it counterclockwise.
2. Use the FT wrench to manually open the front latch. To access the front latch, refer to Folding Top Manual Operation (Folding Top Manual Operation).
3. Ignition OFF, disconnect the harness connector at the folding top front latch position switch-unlatched.
4. Ignition ON, verify the scan tool Header Latch Limit Switches parameter is Mid.
• If not the specified value, test the signal circuit terminal A for a short to voltage. If the circuit tests normal, replace the FTC module.
5. Install a 3A fused jumper wire between the signal circuit terminal A and the control circuit terminal B. Verify the scan tool Header Latch Limit Switches parameter is Unlatched.
• If not the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the FTC module.
6. If all circuits test normal, test or replace the folding top front unlatched position switch.
Latched Position Switch Test
1. Open the hydraulic fluid bypass valve located above the pump motor by turning it counterclockwise.
2. Use the FT wrench to manually open the front latch. To access the front latch, refer to Folding Top Manual Operation (Folding Top Manual Operation).
3. Ignition OFF, disconnect the harness connector at the folding top front latch position switch-latched.
4. Ignition ON, verify the scan tool Header Latch Limit Switches parameter is Mid.
• If not the specified value, test the signal circuit terminal A for a short to voltage. If the circuit tests normal, replace the FTC module.
5. Install a 3A fused jumper wire between the signal circuit terminal A and the control circuit terminal B. Verify the scan tool Header Latch Limit Switches parameter is Latched.
• If not the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the FTC module.
6. If all circuits test normal, test or replace the front latch position switch.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
* Folding Top Front Latch Position Sensor Switch Replacement (Service and Repair)
* Control Module References (Programming and Relearning) for FTC module replacement, setup, and programming