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

REC Scan Tool Data Parameters

Parameter

System State

Expected Value

Description

Operating Conditions: Ignition ON

Brake Switch

--

Inactive

The scan tool displays Active or Inactive. This is the current state of the brake switch.

CDLS-Motor Lock (Central Door Locking System)

--

Inactive

The scan tool displays Active or Inactive. This is the current state of the CDLS motor lock.

CDLS-Motor Unlock (Central Door Locking System)

--

Inactive

The scan tool displays Active or Inactive. This is the current state of the CDLS motor unlock.

CDLS-Status (Central Door Locking System)

--

Unlocked

The scan tool displays Unlocked, Locked or Deadlocked. This is the current state of the CDLS.

Center Brake Light Status

--

Off

The scan tool displays On or Off. This is the current state of the center high mount brake light.

Comfort Closing Status

--

Inactive

The scan tool displays Closing, Opening or Inactive.

Comfort Mode

--

Inactive

The scan tool displays Active or Inactive. This is the current state of comfort mode.

Driver Door

--

Monitored

The scan tool displays Monitored or Not Monitored.

Driver Door Status

--

Varies

The scan tool displays Door Open or Door Closed. This is the current state of the driver door.

Engine Hood

--

Monitored

The scan tool displays Monitored or Not Monitored.

Engine Hood Status

--

Eng. Hood Closed

The scan tool displays Eng. Hood Closed or Eng. Hood Open. This is the current state of the hood.

Fuel Level Sensor

--

Varies

The scan tool displays Steps.

Fuel Level Sensor Validity

--

Valid

The scan tool displays Valid or Invalid. This is the current state of the fuel level sensor validity.

Heated Rear Window Relay

--

Varies

The scan tool displays Active or Inactive. This is the current state of the heated rear window relay.

Ignition Hardwired

--

Monitored

The scan tool displays Monitored or Not Monitored.

Inadvertent Load

--

Varies

The scan tool displays Active or Inactive. This is the current state of the inadvertent load.

Inclination Sensor

--

Monitored

The scan tool displays Monitored or Not Monitored.

Inclination Sensor

--

Valid

The scan tool displays Invalid or Valid. This is the current state of the inclination sensor.

Inclination Sensor Status

--

Varies

The scan tool displays Armed or Disarmed. This is the state of the inclination sensor.

Interior Lamp

--

Off

The scan tool displays On or Off. This is the current state of the interior lamps.

LED CDL Status (Light Emitting Diode Central Door Lock)

--

Off

The scan tool displays On or Off. This is the current state of the LED CDL.

License Plate Light Status

--

Off

The scan tool displays On or Off. This is the current state of the license plate light.

Longitudinal Inclination Sensor

--

Varies

This displays °. This is the current longitudinal inclination angle.

OnStar Door Unlock

--

Inactive

The scan tool displays Active or Inactive. This is the current state of the OnStar door unlock.

OnStar Horn And Flasher Control

--

Inactive

The scan tool displays Active or Inactive. This is the current state of the OnStar horn and flasher control.

Pane Breakage Heated Rear Window

--

Monitored

The scan tool displays Monitored or Not Monitored.

Pane Breakage Heated Rear Window Status

--

Okay

The scan tool displays Okay or Not Okay. This is the state of the heated rear window pane breakage.

Parking Brake Status

--

Inactive

The scan tool displays Active or Inactive. This is the current state of the parking brake.

Passenger Door

--

Monitored

The scan tool displays Monitored or Not Monitored.

Passenger Door Status

--

Door Closed

The scan tool displays Door Open Or Door Closed. This is the current state of the passenger door.

Rear Left Door

--

Monitored

The scan tool displays Monitored or Not Monitored.

Rear Left Door Status

--

Door Closed

The scan tool displays Door Open or Door Closed. This is the current state of the driver rear door.

Rear Left Inner Combination Lamp

--

Off

The scan tool displays On or Off. This is the current state of the driver rear inner combination lamp.

Rear Left Outer Combination Lamp

--

Off

The scan tool displays On or Off. This is the current state of the driver rear outer combination lamp.

Rear Left Spare Lamp

--

Off

The scan tool displays On or Off. This is the current state of the driver rear spare lamp.

Rear Right Door

--

Monitored

The scan tool displays Monitored or Not Monitored.

Rear Right Door Status

--

Door Closed

The scan tool displays Door Open or Door Closed. This is the current state of the passenger rear door.

Rear Right Inner Combination Lamp

--

Off

The scan tool displays On or Off. This is the current state of the passenger rear inner combination lamp.

Rear Right Outer Combination Lamp

--

Off

The scan tool displays On or Off. This is the current state of the passenger rear outer combination lamp.

Rear Right Spare Lamp

--

Off

The scan tool displays On or Off. This is the current state of the passenger rear spare lamp.

Rear Sidemarkers

--

Off

The scan tool displays On or Off. This is the current state of the rear sidemarkers.

Rear Wiper Status

--

Off

The scan tool displays On or Off. This is the current state of the rear wipers.

REC Ignition Status (Rear Electrical Center)

--

Active

The scan tool displays Active or Inactive. This is the rear electrical center ignition status.

REC Immobilizer Environment Identifier (Rear Electrical Center)

--

Programmed

The scan tool displays Programmed or Not Programmed. This is the current state of the REC immobilizer invironment program.

REC Immobilizer Identifier (Rear Electrical Center)

--

Programmed

The scan tool displays Programmed or Not Programmed. This is the current state of the REC immobilizer identifier program.

REC System Voltage (Rear Electrical Center)

--

Varies

This displays V. This is the system voltage of the rear electrical center (REC).

Reverse Light Status

--

All OFF

The scan tool displays All OFF, Right ON, Left ON or All ON. This is the current state of the reverse light.

Ter. 15A - Switched Battery Voltage (Terminal 15A)

--

Active 12V

The scan tool displays Active 12V or Inactive 0V. This is the current state of terminal 15A switched battery voltage.

Transversal Inclination Sensor

--

Varies

This displays °. This is the current transversal inclination angle.

Trunk

--

Monitored

The scan tool displays Monitored or Not Monitored.

Trunk Lamp

--

Off

The scan tool displays On or Off. This is the current state of the trunk lamp.

Trunk Release

--

Inactive

The scan tool displays Active or Inactive. This is the state of the trunk release.

Trunk Release Switch

--

Inactive

The scan tool displays Active or Inactive. This is the state of the trunk release switch.

Trunk Status

--

Trunk Closed

The scan tool displays Trunk Open or Trunk Closed. This is the current state of the trunk.

REC Scan Tool Output Controls

Output Control

Description

Centre Brake Light Test

This output control is used to command the high mount brake lamp.

Comfort Closing Test

This output control is used to command the comfort closing.

Comfort Enable Test

This output control is used to command the comfort enable.

Display Immobilizer Status

This output control is used to display the immobilizer status.

Inadvertent Load Relay Test

This output control is used to command the inadvertent load relay.

Interior Lamp Test

This output control is used to command the interior lamps.

License Plate Light Test

This output control is used to command the license plate lamp.

Program ECU

This output control is used to program the electronic control unit (ECU) or control module.

Program Low Speed CAN-Bus Config.

This output control is used to program the low speed control area network (CAN) serial data bus configuration.

Program Variant Configuration

This output control is used to program the high speed control area network (CAN) serial data bus configuration.

Program Vehicle Identification No.

This output control is used to program the vehicle identification number (VIN) into the control module.

Read ECU Identification

This output control is used to read the electronic control unit (ECU) or control module identification.

Rear Inner Combination Lamps Test

This output control is used to command the rear inner combination lamps.

Rear Outer Combination Lamps Test

This output control is used to command the rear outer combination lamps.

Rear Sidemarkers Test

This output control is used to command the rear sidemarkers.

Rear Spare Lamps Test

This output control is used to command the rear spare lamps.

Rear Wiper Test

This output control is used to command the rear wiper.

REC Heated Rear Window Test

This output control is used to command the heated rear window.

REC Terminal 15A Relay Test

This output control is used to command the rear electrical center (REC) terminal 15A relay.

Reset ECU

This output control is used to reset the electronic control unit (ECU) or control module.

Reverse Light Test

This output control is used to command the reverse lamps.

Trunk Lamp Test

This output control is used to command the trunk lamp.

Trunk Release Test

This output control is used to command the trunk release.

Unlock/Lock Test

This output control is used to command the door locks.