B3602

DTC B3602

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 Descriptor
DTC B3602
- Convertible Top Switch




Diagnostic Fault Information






Circuit/System Description

The folding top control (FTC) module checks the integrity of the signal circuits from the folding top control switch at least once every 300 milliseconds. The folding top control switch has a constant battery positive voltage supplied. Pressing the folding top control switch to the open or close position will apply the battery positive voltage to the appropriate folding top control switch open or close signal circuit to the FTC module. The FTC module monitors these signal circuits to control the direction of the folding top.


Conditions for Running the DTC

The FTC module must be powered and can not have B1327 or B1328 set as active DTCs for this DTC to set. The battery voltage is between 9-16 volts.


Conditions for Setting the DTC

* When the FTC module detects inputs on both the folding top control switch open and close signal circuits at the same time.
* When the FTC module detects either of the folding top control switch open or close signal circuits active for 3 minutes or more.



Action Taken When the DTC Sets

* The folding top operation is suspended.
* The FTC module stores B3602 as a current and history DTC.



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.



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 Testing

1. Ignition OFF, disconnect the harness connector at the folding top control switch.
2. Ignition ON, verify the scan tool Top Control Switch parameter is Inactive.

• If not the specified value, test the signal circuits terminal 2 and terminal 5 for a short to voltage. If the circuits test normal, replace the FTC module.

3. If all circuits test normal, test or replace the folding top control switch.



Component Testing


Folding Top Control Switch
1. Ignition OFF, disconnect the harness connector at the folding top control switch.
2. Test for infinite resistance between the signal terminal 2 and the B+ terminal 4 with the switch in the open position.

• If not the specified value, replace the folding top control switch.

3. Test for less than 1 ohm of resistance between the signal terminal 2 and the B+ terminal 4 with the switch in the closed position.

• If not the specified value, replace the folding top control switch.

4. Test for infinite resistance between the signal terminal 5 and the B+ terminal 4 with the switch in the open position.

• If not the specified value, replace the folding top control switch.

5. Test for less than 1 ohm of resistance between the signal terminal 5 and the B+ terminal 4 with the switch in the closed position.

• If not the specified value, replace the folding top control switch.




Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

* Convertible Top Switch Replacement (Service and Repair)
* Control Module References (Programming and Relearning) for FTC module replacement, setup, and programming