For 1990-2009 cars

Use the scan tool data display values and definitions information in order to assist in diagnosing vehicle malfunctions. Compare the vehicles actual scan tool data with the typical data display value table information. Use the information in order to aid in understanding the nature of the concern when the vehicle data does not match the typical data display values.

The scan tool data values were taken from a known good vehicle under the following conditions:

• | The ignition switch is in the Run position.

• | The engine is not running.

• | The vehicle is in PARK.

Parameter | Operating Conditions | Expected Value | Definition
--- | --- | --- | ---
Ignition is ON, engine OFF, and vehicle is stationary
Accessory Relay Command | Ignition is in ACC/RUN position | On | The scan tool displays On or Off. This is the state of the accessory relay.
Ignition is in OFF position | Off
Acc./RAP Relay Command | Acc./RAP relay switch activated | On | The scan tool displays On or Off. This is the state of the Acc./RAP relay.
Acc./RAP relay switch deactivated | Off
All Door Lock Command | All door lock switch activated | Active | The scan tool displays Active or Inactive. This is the state of the all door lock switch.
All door lock switch deactivated | Inactive
Ambient Light Sensor | -- | 4.6 Volts | The scan tool displays the ambient light level as detected by the sensor as a voltage.
Ambient Light Status | -- | Night | The scan tool displays Night, Day, Unknown or Invalid. This is the state of the ambient light sensor.
-- | Day
-- | Unknown
-- | Invalid
Anti Theft Warning System | Anti theft warning system activated | Armed | This parameter displays whether the anti theft warning system is Armed or Disarmed.
Anti theft warning system deactivated | Disarmed
ATWS LED (Anti-Theft Warn.) | -- | On | The scan tool displays On or Off. This is the current state of the ATWS indicator.
-- | Fast Flash
-- | Off
Auto Headlamp Disable Switch | Auto headlamp disable switch activated | Active | This parameter displays the status of the auto headlamp disable switch.
Auto headlamp disable switch idle position | Inactive
Battery Current | -- | 0 - 4 amps | The scan tool displays amperes. This numeric value is the battery amperage.
Battery Low at Start Up | Battery voltage below 11 Volts | Yes | The scan tool displays Yes if the voltage is below 11 Volts or No if the voltage is above 12 Volts.
Battery voltage above 12 Volts | No
Battery Open Circuit Volts | -- | 12 Volts | This parameter displays the Voltage of the battery open charge.
Battery Open Circuit Tested | Battery circuit open | Yes | The scan tool will display Yes, if the battery has an open circuit.
Battery circuit closed | No
Battery Sulfation Mode | -- | Active | This parameter displays Active if the regulated voltage has been low for some time the BCM will command a higher regulated voltage to prevent sulfation.
-- | Inactive
Battery Voltage | -- | 12 Volts | The scan tool displays 0-14 Volts. The scan tool displays approximately 12 Volts when the ignition is On.
Battery Voltage High Resolution | -- | 12 Volts | The scan tool displays 0-14 Volts. The scan tool displays approximately 12 Volts when the ignition is On.
Boost Level 2 Counter | -- | 0 Counts | The scan tool displays a numeric value. This is the number of level 2 idle boosts.
Boost Level 3 Counter | -- | 0 Counts | The scan tool displays a numeric value. This is the number of level 3 idle boosts.
BPPS High During Learn | -- | Yes | The scan tool displays Yes or No. Yes is displayed if the BPPS was high during BPP calibration.
-- | No
BPPS Learned Home Position | -- | 219 Counts | The scan tool displays Counts. This numeric value is the BPPS learned home position.
BPPS Low During Learn | -- | Yes | The scan tool displays Yes or No. Yes is displayed if the BPPS was low during BPP calibration.
-- | No
BPPS Move During Learn | -- | Yes | The scan tool displays Yes or No. Yes is displayed if the BPPS was moved during BPP calibration.
-- | No
BPPS Reference | -- | 792 Counts | The scan tool displays Counts. This numeric value is the BPPS reference.
BPPS Status (Brake Pedal) | -- | Learned | The scan tool displays Invalid, Learned, Undecided and Learning. This is the state of the BPPS calibration in the BCM.
Brake Lamps | Brake pedal applied | On | The scan tool will display On or Off depending on the position of the brake pedal.
Brake pedal not applied | Off
Brake Pedal Position (BPP) Sensor | -- | 174 Counts | The scan tool displays counts. The numerical value is the location of the BPP as interpreted by the BCM
Brake Status | Brakes applied | On | The scan tool displays On or Off. This is the state of the brakes.
Brakes not applied | Off
Central Door Lock Switch | Centre console door lock button pressed | Active | This parameter displays Active if the central door lock switch has been activated.
Centre console door lock button in idle position | Inactive
Central Door Unlock Switch | Centre console door unlock button pressed | Active | This parameter displays Active if the central door lock switch has been deactivated.
Centre console door unlock button in idle position | Inactive
Cruise Control Switch | Cruise control switched Off | Off | The scan tool displays Off, On, Resume, Set, Error or Cancel. This is the current state of the cruise control switch.
Cruise control switched On | On
Resume/Accel cruise button pressed | Resume
Set/Decel cruise button pressed | Set
-- | Error
Brake pedal applied | Cancel
Current Anti-Theft Warning | No Anti Theft Warnings | None | The scan tool displays None, Driver Door, Passenger Door, Hood, Ignition, Intrusion, Inclination, Remote, Battery Reconnect, Power Mode or Tamper. These parameters are the possible current anti-theft warnings
-- | Driver Door
-- | Passenger Door
-- | Hood
-- | Ignition
-- | Intrusion
-- | Inclination
-- | Remote
-- | Battery Reconnect
-- | Power Mode
-- | Tamper
Daytime Running Lamps | Daytime running lamps activated | On | This parameter displays whether the daytime running lamps are On or Off. If fitted
Daytime running lamps deactivated | Off
Desired Voltage | -- | 12 Volts | The scan tool displays 0-14 Volts. The scan tool displays approximately 12 Volts when the ignition is On.
Dimming Control Switch | Dimming control increase switch activated | Up | This parameter displays the status of the dimming control switch.
Dimming control decrease switch activated | Down
Dimming control switch idle position | Inactive
Door Key Cylinder Lock Switch | Door key cylinder in the lock position | Active | The scan tool displays Active or Inactive. This is the state of the door key cylinder lock switch.
Door key cylinder in the idle position | Inactive
Door Key Cylinder Unlock Switch | Door key cylinder in the unlock position | Active | The scan tool displays Active or Inactive. This is the state of the door key cylinder unlock switch.
Door key cylinder in the idle position | Inactive
Door Lock Request | Centre console door lock button pressed | Power lock | The scan tool displays Power Lock, Door Key Cyl. Keyless Entry, or Auto Locks. This is the current state of the door lock request as monitored by the BCM.
Door locked by key in door lock cylinder | Door Key Cyl.
Remote key door lock button pressed | Keyless Entry
Key removed from ignition | Auto locks
Driver Door Unlock Command | Driver door unlock switch activated | Active | The scan tool displays Active or Inactive. This is the state of the driver door unlock switch.
Driver door unlock switch deactivated | Inactive
Driver Identification | Driver key 1/2/3 in ignition | Driver 1 | This parameter identifies the current key in the ignition.
Driver 2
Driver 3
Drivers Door Ajar Switch | With door open | Door Ajar | The scan tool displays the current status of the drivers door ajar switch
With door closed | Door Closed
Engine Hood Open Switch | Engine hood open | Active | This parameter displays the status of the engine hood open switch.
Engine hood closed | Inactive
Estimated Battery Temperture | -- | 12 °C | This parameter displays the current temperature of the battery.
Flash to Pass Switch | Flash to pass switch activated | Active | The scan tool displays Active or Inactive. This is the state of the flash to pass switch.
Flash to pass switch in idle position | Inactive
Fog Lamp Front | Front fog lamps activated | On | This parameter displays On, when you activate the front fog lamp switch.
Front fog lamps deactivated | Off
Front Fog Lamp Switch | Front fog lamp switch activated | Active | This parameter displays if the front fog lamp switch is Active or Inactive. This determines whether the switch is receiving voltage.
Front fog lamp switch deactivated | Inactive
Fuel Economy Mode | -- | Active | If the battery is over 80% charged the BCM may reduce regulated voltage to as low as 12.8 volts.
-- | Inactive
Headlamp Switch | Headlamp switch activated | On | The scan tool displays On or Off. This is the state of the headlamp switch.
Headlamp switch deactivated | Off
Headlamp Washer Relay Command | Headlamp washer relay activated | On | This parameter displays On or Off. This is the state of the headlamp washer relay.
Headlamp washer relay activated | Off
High Beam | High beam activated | On | The scan tool displays if the high beam lamps are On or Off.
High beam deactivated | Off
High Beam Switch | High beam switch activated | Active | This parameter displays if the high beam switch is active or inactive.
High beam switch deactivated | Inactive
Hood Close Switch | Hood closed | Active | This parameter displays the status of the hood close switch.
Hood open | Inactive
HS Communication Command | HS communication activated | Active | The scan tool displays On or Off. This is the state of the high speed communications command of the BCM.
HS communication deactivated | Inactive
Ignition Accessory/Run | Ignition is in ACC/RUN position | Active | The scan tool displays Active or Inactive. This is the state of the ignition Accessory/Run.
Ignition is in OFF position | Inactive
Ignition Off/Run/Crank | Ignition is in OFF position | Key In | This parameter displays the current status of the ignition Off/Run/Crank.
Ignition is in ACC position | Key Off
Ignition is in RUN position | Run
Ignition is in CRANK position | Crank
Ignition Run/Crank | Ignition is in RUN/CRANK position | Active | The scan tool displays Active or Inactive. This is the state of the ignition Run/Crank.
Ignition is in OFF/ACC position | Inactive
Incand Dimming PWM Command | 0 - 100 | % | This scan tool displays a percentage. This is the current incandescent dimming percentage.
Interior Lamp Door Switch | Interior lamp door switch activated | Active | This parameter displays the status of the interior lamp door switch.
Interior lamp door switch deactivated | Inactive
Interior Lamp Activation Reason | -- | Off | This parameter displays the interior lamp activation reason.
-- | Door Open
-- | Manual Defeat
Interior Lamp On/Off Switch | Interior lamp On/Off switch activated | On | This parameter displays if the interior lamp is turned On or Off.
Interior lamp On/Off switch deactivated | Off
Interior Lamp PWM Command | 0 -100 | % | This parameter displays the interior lamp dimming percentage.
Key In Status | Key in ignition | Key In | This parameter displays if the ignition key is in or out of the ignition barrel
Key not in ignition | Key Out
LED Dimming PWM Command | 0 - 100 | % | The scan tool displays a percentage. This is the current LED dimming percentage.
Left Front Turn Signal | Left front turn signal activated | On | This parameter displays whether the left front turn signal is Active or Inactive.
Left front turn signal deactivated | Off
Left Rear Turn Signal | Left rear turn signal activated | On | This parameter displays whether the left rear turn signal is Active or Inactive.
Left rear turn signal deactivated | Off
Left Turn Signal Switch | Left turn signal switch activated | Active | This parameter displays Active or Inactive. This is the status of the left turn signal switch.
Left turn signal switch in the idle position | Inactive
Load Shed Level 2 Counter | -- | 0 Counts |
Load Shed Level 3 Counter | -- | 0 Counts |
Low Beam | Low beams activated | On | This parameter displays the status of the low beam headlamps.
Low beams deactivated | Off
Off/Run/Crank Reference | -- | 5.4 Volts | The scan tool displays volts. This is the current Off/Run/Crank reference voltage.
Off/Run/Crank Signal | -- | 4.4 Volts | The scan tool displays volts. This is the current Off/Run/Crank signal voltage.
Parasitic Current | -- | 0 Amps | The scan tool displays amperes. This is the state of the parasitic draw on the battery.
Park Brake Switch | Park brake engaged | Active | This parameter displays the current position of the park brake switch.
Park brake disengaged | Inactive
Park Lamp Switch | Park lamp switch activated | On | This parameter displays the status of the park lamp switch.
Park lamp switch deactivated | Off
Park Lamps | Park lamps activated | On | This parameter displays On when the park lamps are in the on position.
Park lamps deactivated | Off
Passenger Door Ajar Switch | With door open | Door Ajar | The scan tool displays the current status of the passenger door ajar switch.
With door closed | Door Closed
Passenger Door Unlock Command | Passenger door unlock switch activated | Active | The scan tool displays Active or Inactive. This is the state of the passenger doors unlock system.
Passenger door unlock switch deactivated | Inactive
Powertrain HS Communication | Powertrain HS communication activated | Active | The scan tool displays Active or Inactive. This is the state of the powertrain high speed communications command.
Powertrain HS communication deactivated | Inactive
Previous State of Charge | 0 - 100 | % | The scan tool displays a percentage. This was the previous state of charge of the battery at start up.
Puddle Lamps | Puddle lamps activated | On | This parameter displays On when the puddle lamps are active.
Puddle lamps deactivated | Off
Rain Sensor Mode | -- | Off Parked |
Rain Sensor Signal | -- | Volts |
Rain Sensor Wiper Request | -- | Valid |
-- | Invalid
Rear Fog Light Status | Rear fog lights activated | On | The scan tool displays On or Off. This is the state of the rear fog light.
Rear fog lights deactivated | Off
Rear Fog Light Switch | Rear fog light switch activated | Active | This parameter displays the status of the rear fog light switch.
Rear fog light switch deactivated | Inactive
Rear Lamp Flasher Switch | Rear lamp flasher switch activated | Active | This parameter displays the status of the rear lamp flasher switch.
Rear lamp flasher switch deactivated | Inactive
Regulator Setpoint | 0 - 100 | % | The scan tool displays a percentage. This is the set point of the voltage regulator.
Reverse Lamps | Reverse gear selected | On | This parameter displays whether the reverse lamps are On or Off.
Reverse gear not selected | Off
Right Front Turn Signal | Right front turn signal activated | On | This parameter displays the status of the right front turn signal.
Right front turn signal deactivated | Off
Right Rear Turn Signal | Right rear turn signal activated | On | This parameter displays the status of the right rear turn signal.
Right rear turn signal deactivated | Off
Right Turn Signal Switch | Right turn signal switch activated | Active | This parameter displays the status of the right turn signal switch.
Right turn signal switch in idle position | Inactive
Run/Crank Relay Command | Ignition is in RUN/CRANK position | On | The scan tool displays On or Off. This is the state of the Run/Crank relay.
Ignition is in OFF/ACC position | Off
Shift Lock Solenoid Command | Shift lock solenoid activated | Lock | The scan tool displays Lock or Unlock. This is the state of the shift lock solenoid.
Shift lock solenoid deactivated | Unlock
Shift Mode Switch | Shift mode switch is activated | Active | This parameter displays the status of the shift mode switch.
Shift mode switch is deactivated | Inactive
Shifter Unlock Command | Shifter unlock command activated | On | The scan tool displays On or Off. This is the state of the shifter unlock command
Shifter unlock command deactivated | Off
Start Up State of Charge | 0 - 100 | % | The scan tool displays a percentage. This was the last state of charge of the battery at start up.
State of Charge | 0 - 100 | % | The scan tool displays a percentage. This is the current state of charge of the battery.
Surveillance Mode Switch | Surveillance mode switch activated | Active | This parameter displays the status of the surveillance mode switch.
Surveillance mode switch deactivated | Inactive
System Power Mode | Ignition is in OFF position | Off | This parameter displays Accessory/Run/Crank. This is the status of the system power mode dependent on the ignition position.
Ignition is in ACC position | Accessory
Ignition is in RUN position | Run
Ignition is in CRANK position | Crank
TC/ESP Switch (Traction Control) | Traction control turned ON | Active | This parameter displays the status of the TC/ESP switch (traction control).
Traction control turned OFF | Inactive
Theft Horn Relay Command | Security system activated | On | The scan tool displays On or Off. This is the state of the theft horn relay.
Security system deactivated | Off
Trunk Release Command | Trunk release button is pressed | Active | The scan tool displays Active or Inactive. This is the state of the trunk release relay.
Trunk release button not pressed | Inactive
Trunk Switch | Trunk switch activated | Active | This parameter displays the status of the trunk switch.
Trunk switch deactivated | Inactive
Up and Down Shift Switch | Active select shift up | Up | This parameter displays the status of the up and down shift switch.
Active select shift down | Down
Active select idle position | Inactive
Washer Relay Command | Washer relay command activated | On | The scan tool displays On or Off. This is the state of the washer relay.
Washer relay command idle position | Off
Windscreen Washer Switch | Windscreen washer switch activated | Active | This parameter displays the status of the windscreen washer switch.
Windscreen washer switch in idle position | Inactive
Windscreen Wiper Switch | User dependent | Off | The scan tool displays Off, Single wipe, Low, High or Switch Fault. This is the state of the windscreen wiper switch.
Single wipe
Low
High
Wiper Delay Setting | User dependent | 1 - 5 | The scan tool displays a numeric value. This is the wiper delay setting.
Wiper High Speed Relay | Wiper high speed relay activated | On | The scan tool displays On or Off. This is the state of the wiper high speed relay.
Wiper high speed relay deactivated | Off
Wiper High Speed Switch | Wiper high speed switch activated | Active | This parameter displays the status of the wiper high speed switch.
Wiper high speed switch deactivated | Inactive
Wiper Park Switch | Wiper park switch activated | On | This parameter displays the status of the wiper park switch.
Wiper park switch in idle position | Off
Wiper Relay Command | Wiper relay activated | On | This parameter displays whether the wiper relay is receiving power. The wiper function is controlled via the BCM.
Wiper relay deactivated | Off

### Body Control Module Scan Tool Output Controls

Scan Tool Output Control | Additional Menu Selection(s) | Description
--- | --- | ---
Backup Lamps | Exterior Lighting | The BCM activates the backup lamp relay when you select ON. The backup lamps illuminate for 5 seconds or until commanded OFF.
Fog Lamps | Exterior Lighting | The BCM activates the fog lamps relay when you select ON. The fog lamps illuminate for 5 seconds or until commanded OFF.
High Beams | Exterior Lighting | The BCM activates the high beam relay when you select ON. The high beam headlamps illuminate for 5 seconds or until commanded OFF.
LF Turn Signal | Exterior Lighting | The BCM activates the left front turn signal lamps when you select ON. The turn signal lamps illuminate for 5 seconds or until commanded OFF.
Low Beams | Exterior Lighting | The BCM activates the low beam relay when you select ON. The low beam headlamps illuminate for 5 seconds or until commanded OFF.
LR Turn Signal | Exterior Lighting | The BCM activates the left rear turn signal lamps when you select ON. The lamp illuminates for 5 seconds or until commanded OFF.
Parking Lamps | Exterior Lighting | The BCM activates the park lamp relay when you select ON. The park lamps illuminate for 5 seconds or until commanded OFF.
RF Turn Signal | Exterior Lighting | The BCM activates the right front turn signal lamps when you select ON. The turn signal lamps illuminate for 5 seconds or until commanded OFF.
RR Turn Signal | Exterior Lighting | The BCM activates the right rear turn signal lamps when you select ON. The lamp illuminates for 5 seconds or until commanded OFF.
Courtesy Lamp | Interior Lighting | The BCM activates the interior lamps outputs for 5 seconds when you select ON. The dome, footwell, and courtesy lamps illuminate for 5 seconds or until commanded OFF.
Incandescent Dimming | Interior Lighting | The BCM activates the interior incandescent type component lamps from full dim to full bright for 5 seconds or until commanded OFF.
LED Dimming | Interior Lighting | The BCM activates the interior LED type component lamps from full dim to full bright for 5 seconds or until commanded OFF.
Wiper | Miscellaneous Test | The Wiper/Washer switch has to be in the off position for this output control to function. The BCM actuates the Wiper relay when you select ON. The front wipers should operate in intermittent mode.
Horn | Miscellaneous Test | The BCM Energizes the horn relay for 5 seconds when you select On or until you select Off.

The Transmission Scan Tool Data Definitions contain a brief description of manual transmission related parameters available on the scan tool. The list is in alphabetical order. A given parameter may appear in any one of the data lists. In some cases, the parameter appears more than once or in more than one data list in order to group certain related parameters together.

CPP Switch: This parameter displays the state of the clutch pedal switch circuit input. The scan tool will display APPLIED when the clutch pedal is depressed, and RELEASED when the clutch pedal is released.
Vehicle Speed Sensor: This parameter displays the speed at which the vehicle is traveling. The scan tool displays vehicle speed as kilometers per hour (km/h), miles per hour (mph). The vehicle speed is calculated based on the input signal from the vehicle speed sensor.
Wheel Speed Sensor: This parameter displays the speed at which the vehicle is travelling. The scan tool displays vehicle speed as kilometres per hour (km/h), miles per hour (m.p.h.). The vehicle speed is calculated based on the input signal from the wheel speed sensor.

The Transmission Scan Tool Data List contains manual transmission related parameters that are available on the scan tool. The list is arranged in alphabetical order. A given parameter may appear in any one of the data lists, and in some cases may appear more than once, or in more than one data list in order to group certain related parameters together.

Use the Transmission Scan Tool Data List only after the following is determined:

• | The Diagnostic System Check - Vehicle in Vehicle DTC Information, is completed.

• | There are no diagnostic trouble codes (DTCs) shown.

• | The on-board diagnostics are functioning properly.

Scan tool values from a properly functioning vehicle may be used for comparison with the vehicle you are diagnosing.

Important: A scan tool that displays faulty data should not be used. The scan tool concern should be reported to the manufacturer. Use of a faulty scan tool can result in misdiagnosis and unnecessary parts replacement.

Only the parameters listed below are referenced in this service manual for use in diagnosis. If all values are within the typical range described below, refer to Symptoms - Manual Transmission in Manual Transmission - Aisin AY6.

The column labelled Data List indicates where a parameter can be located on the scan tool. Refer to the scan tool operating manual for the exact locations of the data lists. The following is a description of each term listed:

Engine Data 1: (1)
Engine Data 2: (2)
EVAP Data: (3)
Fuel Trim Data: (4)
HO2S Data: (5)
Misfire Data: (6)
TAC Data: (7)
CMP Actuator Data: (8)
Cooling/HVAC Data: (9)
Cruise/Traction Data: (10)
Electrical/Theft Data: (11)
IPC Data: (12)
ODM Data: (13)

Scan Tool Parameter | Data List | Units Displayed | Typical Data Value
--- | --- | --- | ---
Engine Idling/Radiator Hose Hot/Closed Throttle/Park or Neutral/Closed Loop/Accessories Off/Brake Pedal Released
CPP Switch (If Equipped) | 1 | APPLIED/RELEASED | RELEASED
Wheel Speed Sensor | 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12 | km/h (mph) | 0

Use the scan tool data values under the following conditions:

• | The Diagnostic System Check - Vehicle in Vehicle DTC Information is complete.

• | The on-board diagnostics are functioning properly.

• | No diagnostic trouble codes (DTCs) are present.

The values below represent a typical display recorded from a properly functioning system.

Important: Do not use a scan tool that displays faulty data. Report the condition to the scan tool manufacturer. The use of a faulty scan tool can result in misdiagnosis and the unnecessary replacement of parts.

Only the parameters listed below are used in this manual for diagnosing. If a scan tool displays other parameters, the values are not recommended by General Motors for use in diagnosis.

Scan tool values below were recorded under the following conditions:

• | Engine at idle

• | Upper radiator hose hot

• | Closed throttle

• | Transmission in Neutral

• | Closed Loop operation

• | Accessories OFF

• | Brake pedal not applied

Scan Tool Parameter | Data List | Units Displayed | Typical Data Value
--- | --- | --- | ---
Clutch Pedal Switch | F0, F3 | applied/released | released
Reverse Inhibit Solenoid Command | F0 | INHIBIT/OFF | OFF
Wheel Speed Sensor | ALL | km/h (mph) | 0
*Data List Legend

• | F0: Engine Data 1

• | F1: Engine Data 2

• | F2: Engine Data 3

• | F3: Cruise Control Data

• | F4: Enhanced EVAP Data

• | F5: Fuel Trim Data

• | F6: Misfire Data

• | F7: TAC Data

• | F8: H02S Data

Clutch Pedal Switch: This parameter displays the state of the clutch pedal switch circuit input. The scan tool will display APPLIED when the clutch pedal is depressed, and RELEASED when the clutch pedal is released.
Reverse Inhibit Solenoid Command: This parameter displays the commanded state of the reverse inhibit solenoid. When the vehicle speed is greater than 5 km/h (3 mph), the solenoid is commanded ON, inhibiting shifts to Reverse. When the vehicle speed is less than 5 km/h (3 mph), the solenoid is commanded OFF, allowing shifts to Reverse. The scan tool will display ON/OFF.
Reverse Inhibit Solenoid Command: This parameter displays the commanded state of the reverse inhibit solenoid. When the vehicle speed is greater than 5 km/h (3 mph), the solenoid is commanded ON, inhibiting shifts to Reverse. When the vehicle speed is less than 5 km/h (3 mph), the solenoid is commanded OFF, allowing shifts to Reverse. The scan tool will display ON/OFF.
Vehicle Speed: This parameter displays the speed at which the vehicle is traveling. The scan tool displays vehicle speed as kilometers per hour (km/h), miles per hour (MPH). The vehicle speed is calculated based on the input signal from the vehicle speed sensor.

Scan Tool Output Control | Additional Menu Selection(s) | Description
--- | --- | ---
Reverse Inhibit | Special Functions - Engine Output Controls | Command grounds the reverse lockout solenoid control circuit. Turns the reverse inhibit solenoid ON and OFF.