GM Service Manual Online
For 1990-2009 cars only
Table 1: Folding Top Module Scan Tool Data Parameters
Table 2: Folding Top Module Scan Tool Output Controls

Folding Top Module Scan Tool Data Parameters

Parameter

System State

Expected Value

Description

Operating Conditions: Ignition ON, Vehicle in Park, Folding Top Closed and Luggage Barrier In Place

5 Bow Lowered Pos. Switch

--

Active

The scan tool displays Active or Inactive. When the 5 bow is in the lowered position, the switch is closed and the scan tool will display Active.

5 Bow Position CKT Status

--

Ok

The scan tool displays Deck OK or Fault. This history parameter identifies 5 bow position status the last time top operation was attempted.

5 Bow Raised Pos. Switch

--

Inactive

The scan tool displays Active or Inactive. When the 5 bow is in the raised position, the switch is closed and the scan tool will display Active.

Battery Voltage Signal

--

Varies

This displays Volts. This is the current battery voltage signal.

Header Latch Switch

--

Latched

The scan tool displays Latched or Unlatched. When the header is latched the scan tool displays the header latched input to the BCM as Latched.

Limit Switch Supply Voltage

--

Present

The scan tool displays Present or Not Present. This parameter displays the status of the limit switch accessory voltage to the FTC module the last time the top operation was attempted.

Luggage Barrier In Place

--

Yes

The scan tool displays Yes or No. With the luggage barrier in place, the scan tool will display luggage barrier limit switch input to FTC module as Yes.

Module Over Current Detected

--

No

The scan tool displays Yes or No. The scan tool will display Yes if the current through the module is above the safe operating level. This history parameter identifies the current through the module the last time the top operation was attempted.

Module Over Voltage Detected

--

No

The scan tool displays Yes or No. The scan tool will display Yes if the voltage supply to the FTC module is above the safe operating level of 16.0 volts. This history parameter identifies the module voltage level the last time top operation was attempted.

Module Under Voltage Detected

--

No

The scan tool displays Yes or No. The scan tool will display Yes if the voltage supply to the FTC module is below the safe operating level of 9.0 volts. This history parameter identifies the module voltage level the last time top operation was attempted.

Motor Command

--

Varies

The scan tool displays 0-127 amps. The amount of current used through the module during folding top operation.

Motor X Direction Command

--

Off

The scan tool displays On or Off. This is the state of motor X.

Motor Y Direction Command

--

Off

The scan tool displays On or Off. This is the state of motor Y.

Power Mode

--

Accy. or Run

The scan tool displays Accy. or Run or Not Accy. or Run. This displays the power mode status the last time top operation was attempted.

Power Pull Down Ajar Status

--

Closed

The scan tool displays Closed or Ajar. During folding top operation, when the folding top cover pull down is extended to the up position, the scan tool will display the status of the pull down as Ajar.

Pull Down Position CKT Status

--

Ok

The scan tool displays Ok or Fault. This is the current pull down position status.

Pump Motor Temp. Sensor

--

Varies

The scan tool displays the temperature of the pump motor thermistor as Fahrenheit or Celsius.

Pump Over Temperature Sensor

--

Normal

The scan tool displays Normal or Overtemp. The pump motor thermistor input to the FTC module, when the temperature is outside of the normal operation range it will be displayed as Overtemp.

Tonneau Latch Switch

--

Closed

The scan tool displays Closed or Ajar. After the BCM releases the folding top cover the scan tool will display the folding top cover latch ajar input to the BCM as Ajar.

Tonneau Open Limit Switch

--

Inactive

The scan tool displays Active or Inactive. During folding top operation when the tonneau is in the open position, the scan tool will display the folding top cover switch input to the FTC module as Active.

Tonneau Position CKT Status

--

Ok

The scan tool displays Ok or Fault. This history parameter displays the tonneau position status the last time top operation was attempted.

Too Cold For Top Operation

--

No

The scan tool displays Yes or No. The pump motor thermistor input to the FTC module, when the temperature is too cold, the scan tool will display Yes. This history parameter identifies pump temperature status the last time top operation was attempted.

Top Closed Limit Switch

--

Active

The scan tool displays Active or Inactive. When the top is in the closed position, the scan tool will display the top closed limit switch input to the FTC module as Active.

Top Control Switch

--

Inactive

The scan tool displays Inactive, Open, Close, or Invalid. the FTC module monitors the folding top control switch open signal and close signal inputs, comparing the inputs and displaying the status as Open, Close, Inactive or Invalid.

Top Open Limit Switch

--

Active

The scan tool displays Active or Inactive. When the top is in the open or stowed position, the scan tool will display the top open limit switch input to the FTC module as Active.

Top Position Error

--

No

The scan tool displays Yes or No. This history parameter identifies if the top position status last time top operation was attempted received an error.

Trunk Ajar

--

Closed

The scan tool displays Ajar or Closed. When attempting to operate the power folding top, if the trunk is open the scan tool will display the status of the trunk as Ajar.

Valve 1-3 Command

--

Off

The scan tool displays On or Off. This is the state of the commanded corresponding valve.

Vehicle In Park

--

Yes

The scan tool displays Yes or No. Yes is displayed if the vehicle is in park.

Folding Top Module Scan Tool Output Controls

Output Control

Description

Valve 1 Command

The FTC module commands Valve 1 to energize or not. As the valve is energized, a click can be heard, activating the valve.

Valve 2 Command

The FTC module commands Valve 2 to energize or not. As the valve is energized, a click can be heard, activating the valve.

Valve 3 Command

The FTC module commands Valve 3 to energize or not. As the valve is energized, a click can be heard, activating the valve.

Motor X Direction

The FTC module commands the pump motor to operate in the X direction when you select direction X. The motor should operate in the requested direction.

Motor Y Direction

The FTC module commands the pump motor to operate in the Y direction when you select direction Y. The motor should operate in the requested direction.