Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptors
DTC B3669: Deck Lid Position Sensor CircuitDiagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Folding Top Control Module Battery Voltage | 1 | 1 | -- | -- |
Folding Top Control Module Control | B1420 | B1420 | -- | -- |
Folding Top Control Module Ground | -- | 1, 2 | -- | -- |
Folding Top Control Switch Battery Voltage | 2 | 2 | -- | -- |
Folding Top Control Switch Close Signal | 2 | 2 | B3602 | -- |
Folding Top Control Switch Open Signal | 2 | 2 | B3602 | -- |
Front Panel Position Sensor 5-Volt Reference | B3665, B3666, B3971 | B3665 | B3665, B3666, B3670, B3971 | -- |
Front Panel Position Sensor Signal | B3665 | B3665 | B3665 | -- |
Front Panel Position Sensor Low Reference | -- | B3665 | -- | -- |
Folding Top Position Sensor 5-Volt Reference | B3665, B3666, B3971 | B3971 | B3665, B3666, B3670, B3971 | -- |
Folding Top Position Sensor Signal | B3971 | B3971 | B3971 | -- |
Folding Top Position Sensor Low Reference | -- | B3971 | -- | -- |
Rear Panel Position Sensor 5-Volt Reference | B3665, B3666, B3971 | B3666 | B3665, B3666, B3670, B3971 | -- |
Rear Panel Position Sensor Signal | B3666 | B3666 | B3666 | -- |
Rear Panel Position Sensor Low Reference | -- | B3666 | -- | -- |
Folding Top Pump Motor Temperature Sensor 5-Volt Reference | B3665, B3666, B3971 | 2, 7 | B3665, B3666, B3971, B3670 | -- |
Folding Top Pump Motor Temperature Sensor Signal | 2, 7 | 2, 7 | B3670 | -- |
Hard Top Connected Signal | B1420 | 4, 7 | B1310 | -- |
Folding Top Closed Switch Control | B1420 | 4, 7 | -- | -- |
Front Latched Position Switch Signal | B1420, 3, 4, 7 | 3, 4, 7 | B1300 | -- |
Front Latched Position Switch Control | B1420 | 3, 4, 7 | -- | -- |
Front Unlatched Position Switch Signal | B1420, 9 | 9 | B1300 | -- |
Front Unlatched Position Switch Control | B1420 | 9 | -- | -- |
Compartment Partition Position Switch Signal | B1420, 2, 7 | 2, 7 | 8 | -- |
Compartment Partition Position Switch Control | B1420 | 2, 7 | -- | -- |
Pump Direction A Control | B1011 | 2 | -- | -- |
Pump Direction B Control | B1011 | 2 | -- | -- |
Rear Compartment Lid Open Switch Signal | B1420, 3, 4 | 3, 4 | B3669 | -- |
Rear Compartment Lid Open Switch Control | B1420 | 3, 4 | -- | -- |
Folding Top Valve 1 Control | 1 | 3 | -- | -- |
Folding Top Valve 1 - Ground | -- | 3 | -- | -- |
Folding Top Valve 2 Control | 1 | 4 | -- | -- |
Folding Top Valve 2 - Ground | -- | 4 | -- | -- |
Folding Top Valve 3 Control | 1 | 3, 4, 6 | -- | -- |
Folding Top Valve 3 - Ground | -- | 3, 4, 6 | -- | -- |
Folding Top Valve 4 Control | 1 | B1297, 3, 4, 5 | -- | -- |
Folding Top Valve 4 - Ground | -- | B1297, 3, 4, 5 | -- | -- |
Folding Top Valve 5 Control | 1 | 2 | -- | -- |
Folding Top Valve 5 - Ground | -- | 2 | -- | -- |
1. No communication with the FTC module 2. Power folding top is inoperative 3. Power folding top does not open or complete the top opening procedure 4. Power folding top does not close or complete the top closing procedure 5. Rear Compartment lid will not open 6. Rear compartment lid will not close 7. DIC warning message displayed 8. Folding top will operate with the rear compartment partition removed 9. No effect on power folding top operation | ||||
Circuit/System Description
The folding top control (FTC) module checks the rear compartment lid open switch signal circuit at least once every 300 milliseconds. The FTC module compares the rear compartment lid open switch signal against the rear compartment lid ajar switch signal, a class 2 message from the body control module (BCM). When the folding top control switch is pressed to open or close the folding top, the rear compartment lid is released and a class 2 message is sent indicating the rear compartment lid is ajar. The FTC module will continue to raise the rear compartment lid upward until it is fully extended, closing the rear compartment lid open switch to voltage. The voltage is then applied through the rear compartment lid open switch and the signal circuit to the FTC module. Once this signal is received, the FTC module can continue to cycle the folding top operation.
Conditions for Running the DTC
The battery voltage is between 9-16 volts.
Conditions for Setting the DTC
The FTC module monitors the rear compartment lid open switch signal and a class 2 message from the BCM the deck lid ajar switch status. The FTC module will set this DTC, if it senses that the rear compartment lid is open and does not receive the deck lid ajar message.
Action Taken When the DTC Sets
| • | Stores a current and history DTC B3669 in the FTC module. |
| • | The folding top operation is suspended. |
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
Connector End View Reference
Description and Operation
Power Folding Top Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for Scan Tool Information
Circuit/System Verification
- When the rear compartment lid is closed or in any position other than the fully open/extended position, the scan tool Deck Lid Extended parameter should be Inactive.
- When the rear compartment lid is in the fully open/extended position, the scan tool Deck Lid Extended parameter should be Active.
- Ignition ON, observe the scan tool Deck Lid Ajar Status parameter while opening and closing the rear compartment lid. The reading should change between Deck Closed and Deck Ajar.
| ⇒ | If not the specified value, refer to the Rear Compartment Lid Position Switch Test. |
| ⇒ | If not the specified value, refer to the Rear Compartment Lid Position Switch Test. |
| ⇒ | If not the specified value, refer to the Rear Compartment Lid Pulldown Actuator Test. |
Circuit/System Testing
Rear Compartment Lid Position Switch Test
- Ignition OFF, disconnect the harness connector at the rear compartment lid position switch.
- Ignition ON, verify that a test lamp illuminates between the control circuit terminal B and ground.
- Ignition ON, verify the scan tool Deck Lid Extended parameter is Inactive.
- Install a 3A fused jumper wire between the signal circuit terminal A and the control circuit terminal B. Verify the scan tool Deck Lid Extended parameter is Active.
- If all circuits test normal, test or replace the rear compartment lid position switch.
| ⇒ | If the test lamp does not illuminate, test the control circuit for a short to ground or an open/high resistance. |
| ⇒ | 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. |
| ⇒ | If not the specified value, test the signal circuit for an open/high resistance. If the circuit tests normal, replace the FTC module. |
Rear Compartment Lid Pulldown Actuator Test
- Ignition OFF, disconnect the harness connector at the rear compartment lid pulldown actuator.
- Test for less than 5 ohms between the ground circuit terminal F and ground.
- Ignition ON, verify the scan tool Deck Lid Ajar Status parameter is Deck Closed.
- Install a 3A fused jumper wire between the signal circuit terminal A and ground. Verify the scan tool Deck Lid Ajar Status parameter is Deck Ajar.
- If all circuits test normal, test or replace the rear compartment lid pulldown actuator.
| ⇒ | If greater than the specified range, test the ground circuit for an open/high resistance. |
| ⇒ | If not the specified value, test the signal circuit terminal A for a short to ground. If the circuit tests normal, replace the BCM. |
| ⇒ | If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the BCM. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for FTC module replacement, setup, and programming |
