GM Service Manual Online
For 1990-2009 cars only

Parameter

Operating Conditions

Expected Value

Definition

Ignition is ON, engine OFF, and vehicle is stationary

Able to Move

--

Yes

When the seat is requested to move, the seat memory module monitors the amount of Steps that a position sensor has taken during that movement. This inability to move at all or quickly enough may be due to a physical restriction in that movement, or the battery not having enough charge to power the particular motor adequately.

--

No

Able To Recall

--

Yes

This parameter displays if the seat assembly has the ability to recall a memory position.

--

No

Memory Button 1

--

Active

This parameter displays the state of button 1 on the memory position switch.

--

Inactive

Memory Button 2

--

Active

This parameter displays the state of button 2 on the memory position switch.

--

Inactive

Memory Button 3

--

Active

This parameter displays the state of button 3 on the memory position switch.

--

Inactive

Memory Button M

--

Active

This parameter displays the state of button M on the memory position switch.

--

Inactive

Button Pack Communication

--

Okay

This parameter displays whether there is serial data communication with the mirror control switch, right hand or left hand rear-view mirrors. If there is communication with at least one of these components, the scan tool will display Okay. If there is no communications with all of the components, the scan tool will display Not Okay.

--

Not Okay

Current Priority

--

Priority 1

This parameter displays what is the current priority that has been set when the vehicle is unlocked with either priority key 1 or 2.

--

Priority 2

--

No Active Memory

Demist Request

--

Yes

This parameter displays the status of the rear demist system.

--

No

Driver Idntification

--

Driver 1

This parameter displays the current User selections, based off from the ignition key.

--

Driver 2

--

Driver 3

Front Vertical Position Max Limit

0 - 65635

Steps

This parameter displays the maximum limit of travel up in Steps. This value depends on the calibration of the seat. This value should be high but never reach 65535 Steps. If the value displayed is 65535, the seat has not been calibrated.

Front Vertical Position Min Limit

--

Steps

This parameter displays the minimum limit of travel down in Steps. This value depends on the calibration of the seat. This value should be low but never reach 0 Steps. If the value displayed is 0, the seat has not been calibrated.

Front Vertical Position Sensor

--

Connected

This parameter displays if the front lift motor position sensor is connected.

--

Not Connected

Front Vertical Position Sensor

0 - 65635

Steps

This parameter displays the current position of the front lift motor position sensor as a value in Steps.

Front Vertical Switch

--

Inactive

This parameter displays the state of the front lift switch on the seat adjustment switch

--

Up

--

Down

Horizontal Position Sensor

--

Connected

This parameter displays if the fore/aft movement motor position sensor is connected.

--

Not Connected

Horizontal Position Sensor

32589

Steps

This parameter displays the current position of the fore/aft movement motor position sensor as a value in Steps.

Horizontal Positionn Max. Limit

0 - 65635

Steps

This parameter displays the maximum limit of travel forward in Steps. This value depends on the calibration of the seat. This value should be high but never reach 65535 Steps. If the value displayed is 65535, the seat has not been calibrated.

Horizontal Postion Min. Limit

--

0 Steps

This parameter displays the minimum limit of travel aft in Steps. This value depends on the calibration of the seat. This value should be low but never reach 0 Steps. If the value displayed is 0, the seat has not been calibrated

Horizontal Switch

--

Inactive

This parameter displays the state of the horizontal switch on the seat adjustment switch.

--

Up

--

Down

Ignition Accessory Signal

--

On

This parameter displays the status of the ignition switch.

--

Off

Ignition On Signal

--

On

This parameter displays the status of the ignition switch.

--

Off

Ignition Switch

--

On

This parameter displays the status of the ignition switch.

--

Off

--

Accessory

Left Exterior Mirror Communication

--

Okay

This parameter displays if the scan tool can communicate with the left hand exterior rear-view mirror.

--

Not Okay

Left Exterior Mirror Switch

--

Up

This parameter displays the status of the mirror control switch, when the rocker switch is selected to left.

Down

Left

Right

Inactive

Memory 1 Button

--

Pressed

This parameter displays the state of button 1 on the memory position switch.

--

Not Pressed

Memory 2 Button

--

Pressed

This parameter displays the state of button 2 on the memory position switch.

--

Not Pressed

Memory 3 Button

--

Pressed

This parameter displays the state of button 3 on the memory position switch.

--

Not Pressed

Memory Recall Position in Use

--

Memory 1

This parameter displays the status of the current memory recall of the seat assembly.

Memory 2

Memory 3

Priority 1

Priority 2

No Active Memory

Mirror DIP Button

--

Not Pressed

This parameter displays the state of the mirror dip / memory store (M) button on the memory position switch.

--

Pressed

MSM Power Output

--

Active

This parameter displays the Power Output state of the Memory Seat Module.

--

Inactive

MSM UART Bus Status

--

On

This parameter displays the Status of the Memory Seat Module UART Bus.

--

Off

MSM Wake-Up Output

--

Active

This parameter displays the Wake-Up Output state of the Memory Seat Module.

--

Inactive

Rear Vertical Switch

--

Inactive

This parameter displays the state of the rear lift switch on the seat adjustment switch.

--

Up

--

Down

Rear Vertical Position Sensor

--

Connected

This parameter displays if the rear lift motor position sensor is connected

--

Not Connected

Rear Vertical Position Sensor

0 - 65536

Steps

This parameter displays the current position of the rear lift motor position sensor as a value in Steps.

Rear Verticle Position Max. Limit

0 - 65536

Steps

This parameter displays the maximum limit of travel up in Steps. This value depends on the calibration of the seat. This value should be high but never reach 65535 Steps. If the value displayed is 65535, the seat has not been calibrated.

Rear Verticle Position Min. Limit

0 - 65536

Steps

This parameter displays the minimum limit of travel down in Steps. This value depends on the calibration of the seat. This value should be low but never reach 0 Steps. If the value displayed is 0, the seat has not been calibrated

Recline Position Sensor

--

Connected

This parameter displays if the seat back recline motor position sensor is connected

--

Not Connected

Recline Position Sensor

0 to 65535

Steps

This parameter displays the current position of the seat back recline motor position sensor as a value in Steps. The Steps will range from 0 to 65535.

Recline Switch

--

Inactive

This parameter displays the state of the recline switch on the seat adjustment switch.

--

Forward

--

Back

Reverse Gear

--

Active

This parameter displays if the vehicle is in reverse gear.

--

Inactive

Right Exterior Mirror Communication

--

Okay

This parameter displays if the scan tool can communicate with the right hand exterior rear-view mirror. If there is not serial data communications with the right hand exterior rear-view mirror, a DTC will set.

--

Not Okay

Right Exterior Mirror Switch

--

Up

This parameter displays the status of the mirror control switch, when the rocker switch is selected to right.

Down

Left

Right

Inactive

Shift Lever Position

User Dependant

P

This parameter displays the position of the transmission selector.

R

N

D

3

2

1

Start Wait Active

--

Yes

Only when there has been a cold-start reset will the scan tool display No. A cold-start reset will occur when module detects too much electromagnetic interference (EMI) in the system. If the Start Wait Active displays No, the system will still be operational.

--

No

System Power Mode

--

Run

This parameter displays the Power Mode required for the System to run.

Vehicle Speed

--

km/h

This parameter indicates the vehicle speed calculated by the control module based on an input from the vehicle speed sensor (VSS). The scan tool will display a high value at higher vehicle speeds, and a low value at lower vehicle speeds.