• | 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. |
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 |
When the ignition is in the ON position, battery voltage from the auxiliary relay is applied through the 15-amp FOLDING TOP/TRUNK LATCH fuse and the control circuit to the folding top control (FTC) module. The FTC module monitors this circuit at least once every 300 milliseconds to determine if voltage is supplied to the following folding top switches:
• | Front latched switch |
• | Front unlatched switch |
• | Compartment partition switch |
• | Rear compartment lid open switch or deck lid open switch |
• | Folding top closed switch |
• | Rear compartment lid pulldown actuator |
The battery voltage is between 9-16 volts.
• | The FTC module detects the control circuit voltage dropped below 3 volts. |
• | The power mode is either in Accessory, RUN, Rap or Crank. |
• | Stores a current and history DTC B1420 in the FTC module. |
• | The folding top operation is suspended. |
• | If the condition occurs during operation of the folding top, once the top control switch is released, the FTC module will send a class 2 message to the driver information center (DIC), displaying TOP NOT SECURE. |
• | 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. |
The Rear Compartment Lid is also referenced as the Deck Lid for this vehicle.
Power Folding Top Description and Operation
Control Module References for Scan Tool Information
⇒ | If the test lamp does not illuminate, test the control circuit for a short to ground or an open/high resistance. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for FTC module replacement, setup, and programming