Circuit Description
The folding top control (FTC) module checks the integrity of the signal circuits from the rear compartment lid release close switch at least once every 300 milliseconds. The rear compartment lid release close switch has a constant battery positive voltage supplied. Pressing the rear compartment lid release close switch will apply the battery positive voltage to the rear compartment lid release close switch signal circuit to the FTC module. The FTC module monitors the signal request and will operate the rear compartment lid when battery positive voltage is received.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC B3641 Trunk Close Switch Circuit
Conditions for Running the DTC
The battery voltage is between 9-16 volts.
DTC B1327 is not currently set.
Conditions for Setting the DTC
When the FTC module detects a short to battery in the rear compartment lid release close switch circuit for more than 5 seconds.
Action Taken When the DTC Sets
| • | Stores a current and history DTC B3641 in the FTC module. |
| • | The rear compartment lid pulldown feature will be inactive from the rear compartment lid release close switch. |
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. |
| • | History and current DTC can be cleared using the scan tool. |
Diagnostic Aids
A rear compartment lid release close switch that is held or stuck in the closed position for more than 5 seconds will set this DTC.
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Body Rear End Schematics Connector End View Reference: Body Rear End Connector End Views | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
2 |
Is DTC B3641 set as a current DTC? | Go to Step 3 | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems |
3 | Inspect the rear compartment lid release close switch for a condition in which the switch is stuck in the closed position. Did you find and correct the condition? | Go to Step 7 | Go to Step 4 |
4 | Test the rear compartment lid release close switch signal circuit for a short to B+. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 7 | Go to Step 5 |
5 | Inspect for poor connections at the harness connector of the FTC module. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 7 | Go to Step 6 |
6 |
Important: Perform the setup procedure for the FTC module.
Did you complete the replacement? | Go to Step 7 | -- |
7 |
Does the DTC reset? | Go to Step 2 | -- |
