XLR V8-4.6L VIN A (2006)
Hard Top: Customer Interest
Body - Erratic Power Folding Top Operation
INFORMATION
Bulletin No.: 03-08-67-008D
Date: February 12, 2009
Subject:
Diagnostic Information and New Software for Power Folding Top/Roof - Stops Mid-Cycle, Deck Lid (Trunk) Inoperative, Intermittent "Top Not
Secure" Message On DIC With No DTCs Set
Models:
2004-2009 Cadillac XLR, XLR-V
Supercede:
This bulletin is being revised to add the 2009 model year. Please discard Corporate Bulletin Number 03-08-67-008C (Section 08 - Body & Accessories).
This bulletin provides diagnostic information for a power folding top that exhibits the following conditions:
^
The power folding top stops mid-cycle.
^
The deck lid is inoperative.
^
A "TOP NOT SECURE" message may be displayed on the Driver Information Center (DIC).
Technicians may find that no Diagnostic Trouble Codes (DTCs) have been set.
Diagnostic Information For Intermittent Folding Top Operation
Intermittent concerns with top operation that do not set a DTC can possibly be related to top position sensors that read a position incorrectly. In such
cases, the top will operate to a point and will not advance and complete the operation. In these cases, the pump will continue to run up to 15 seconds as
long as the top control switch is depressed.
The top operates in a sequence of steps: the first step must be completed before the second step can start. The folding top control module reads the limit
switches and position sensors (potentiometers) in order to determine if one step is complete and the next step can begin.
In order for a technician to diagnose a concern, it is important to assess and record the position of the top parameters where the roof stops (the location in
the top operation sequence) and is unable to complete the cycle. It is also important to know the direction of operation, moving from top closed (coupe)
to top open or moving from top open (convertible) to top closed.
Important:
Performing a relearn procedure on the Folding Top Control (FTC) module will reset all of the reference parameters and the top will usually function
again but the root cause of the concern will not have been corrected.
Sequence for Opening the Folding Top
Before any movement of the folding top toward the open position is allowed, the following conditions must be met or top operation will be inhibited:
^
The cargo cover must be pulled or extended into position (Luggage Barrier Limit Switch Closed).
^
Verify that the hydraulic pump bypass valve at the motor is in the operating position by turning the valve clockwise.
^
The valet switch is off/inactive, it is located inside the instrument panel compartment on the left side of the compartment.
^
The power windows are normalized, refer to Reinitialization of the Power Windows.
^
The vehicle is in PARK.
^
The ignition is in ACCESSORY or RUN.
To cycle the top from the closed/coupe position to the open/convertible position, press the folding top control switch to the open direction and hold. The
folding top status changes to Opening and the following steps will then take place:
