The typical scan tool readings of body control module (BCM) data will assist in diagnosing a problem. The scan tool data displays may be viewed while the vehicle is being driven.

The typical scan tool data definitions represent general information displayed on the scan tool regarding the following items:

The data messages and menu headings displayed on the scan tool are defined below.

Module Information 1

Module Part Number

Range: 16XXXXXX

This information refers to the part number assigned to the BCM that is currently in the vehicle.

Manufacturer Enable Counter

Range : 0-255

This information refers to the actual value for the manufacturers enable counter (MEC) in the BCM. This information is for the assembly plant use only.

Software Part Number

Range: 16XXXXXX

This information refers to the version of the software ID (software identification number) in the BCM.

Software Design Suffix

Range: AA-ZZ

This information refers to the version of the software part number in the BCM.

Module Information 2

RAP Calibration Number

Range 16XXXXXX

This information refers to the RAP calibration part number in the BCM.

RAP Suffix

Range: AA-ZZ

This information refers to the RAP identification number in the BCM.

Lighting Calibration Number

Range 16XXXXXX

This information refers to the lighting configuration calibration part number in the BCM.

Lighting Suffix

Range: AA-ZZ

This information refers to the lighting configuration identification number in the BCM.

Reminder Calibration Number

Range: 16XXXXXX

This information refers to the reminder warning calibration part number in the BCM.

Reminder Suffix

Range: AA-ZZ

This information refers to the reminder warning identification number in the BCM.

Security Calibration Number

Range: 16XXXXXX

This information refers to the security calibration part number in the BCM.

Security Suffix

Range: AA-ZZ

This information refers to the security identification number in the BCM.

Data

Dimming Potentiometer

Range: 0.0-18.0 volts

The voltage value displayed indicates the position of the dome lamp switch (thumb wheel). Zero (0) volts will be displayed when the following conditions exist:

10.5 volts will be displayed when the following conditions exist:

0.1 volts will be displayed if the following conditions exist:

The dimming potentiometer voltage will change as the dome lamp switch is moved between FULL BRIGHT and FULL DIM. The voltage value displayed should vary between 0.1-12.7 volts depending on the position of the dome lamp switch.

Battery Voltage

Range: 0-18.0 volts

The voltage value displayed refers to the battery system voltage measured by the BCM.

Ambient Light Sensor

Range: 0-5.0 volts

The displayed voltage value refers to the amount of ambient light level as measured by the light sensor. This information is used by the BCM in order to operate the automatic headlamp feature and the daytime running lamps (DRL) feature. The BCM supplies 5 volts to the ambient light photocell sensor and receives a return signal voltage from the ambient light photocell on the return signal circuit. The ambient light sensor internal resistance changes with different levels of ambient light. In LIGHT ambient conditions, the resistance is low. In DARK ambient conditions, the resistance is high.

The BCM interprets the following conditions as LIGHT:

The BCM interprets the following conditions as DARK:

If there is an open or a short to ground in the ambient light sensor circuit, the sensor will read about 0.0 volts. The BCM will default into a DARK state and turn ON the headlamps.

If the headlamps are set to the AUTO position while in the LIGHT state and the ambient light level conditions change to DARK for 15 seconds, the BCM will turn ON the headlamps.

If the headlamps are set to the AUTO position while the DARK state and the ambient light level conditions change to LIGHT for 20 seconds, the BCM will turn the headlamps OFF.

Ambient Light

Range: Light/Dark

The displayed value refers to the amount of ambient light level calculated by the BCM using the light sensor.

The information is used by the BCM for operation of the following features:

The BCM supplies 5 volts to the ambient light photocell sensor and receives a return signal voltage from the ambient light photocell sensor on the return signal circuit.

The following actions will occur if there is an open or a short to ground in the ambient light sensor circuit:

If the headlamps are set to the AUTO position while in the LIGHT state and the ambient light level conditions change to DARK for 15 seconds, the BCM will turn the headlamps ON.

If the headlamps are set to the AUTO position while the DARK state and the ambient light level conditions change to LIGHT for 20 seconds, the BCM will turn the headlamps OFF.

Dusk

YES/NO

The displayed value refers to the dimming signal output from the BCM. This information is used by the BCM for the operation of the following features:

Dusk is displayed whenever the park lamps are ON.

High Beam Input

Range: 0.0-18.0 Volts

The BCM uses this input in order to determine the state of the high beam headlamps. The BCM measures the circuit voltage at a point between both of the high beam headlamps and the beam selector switch. The high beam input voltage will vary depending on the state of the headlamps. Refer to the following table.

Headlamps State	High Beam Input Voltage
DRL Beams ON	5.9-7.0 volts
Low Beams ON	11.5-14.0 volts
High Beams ON	1.2 volts

Vehicle Speed

Range: 0-205 km/h (0-127 mph)

The BCM uses the data for determining how fast the vehicle is traveling. The BCM uses this data for the operation of the following features:

Inadvertent Power Timer

Range: 0-1216 seconds

The BCM uses this feature in order to protect the battery against inadvertent battery rundown caused by devices that attach to the courtesy lamp circuit. If the following lights remain ON, the BCM will turn the lights OFF after 20 minutes:

The lights are turned OFF by the inadvertent power relay. The inadvertent power relay supplies power to the courtesy lamp circuit when the ignition is in the OFF position. The number of seconds displayed refers to the amount of time left before the BCM will turn the relay OFF.

RAP Timer

Range: 0-1198 Seconds

The BCM uses this feature to control the devices that attach to the retained accessory power (RAP) circuit. This feature allows the operation of the following components for 20 minutes after the ignition key is turned to the OFF position and before any door is opened:

When any door is opened after 20 minutes, the BCM opens the ground circuit for the RAP relay. The following components will turn OFF:

The number of seconds displayed refers to the amount of time left before the BCM will turn OFF the RAP relay. The BCM uses the data in order to control the power to the RAP circuit.

Courtesy Lamp Timer

Range: 0-40 seconds

The BCM uses the courtesy lamp timer in order to control the devices that attach to the following circuits:

Input 1

Ignition 1

Range: ACTIVE/ INACTIVE

The BCM uses the Ignition 1 data in order to determine the position of the ignition switch.

ACTIVE is displayed when the ignition switch is in the RUN or CRANK position.

INACTIVE is displayed when the ignition switch is not in the RUN or CRANK position.

Ignition 3

Range: ACTIVE/ INACTIVE

The BCM uses the Ignition 1 data in order to determine the position of the ignition switch.

ACTIVE is displayed when the ignition switch is in the RUN position.

INACTIVE is displayed when the ignition switch is not in the RUN position.

Ignition Power Mode

Range: OFF/ RUN/ CRANK/ UNKNOWN

The BCM uses the ignition power mode data in order to determine the position of the ignition switch.

OFF is displayed when the ignition switch is in the OFF or the ACCESSORY positions.

RUN is displayed when the switch is in the RUN position.

CRANK is displayed when the ignition switch is in the CRANK position.

UNKNOWN is displayed when the BCM is unable to determine the position of the ignition switch (i.e. between the OFF and the RUN position).

RFA Message Since Wake-Up

Range: NONE/ PANIC/ ACTIVE UNLOCK Fob (#)/ ACTV LOCK/ PROG MODE CANCEL/ REAR/ PROG MODE REQ/ TRANSMITTER DIAG/ PROG SUCCESSFUL/ MODE ACK/ MANUAL RESYNC

The RFA message since wake-up refers to the last message sent to the BCM from the RFA module. The RFA module sends a request to the BCM based on the RFA transmitter (key fob) button presses. The scan tool will display the last RFA Module request to the BCM since the BCM has been awake.

NONE is displayed when the BCM wakes from the asleep status without receiving a message from the RFA Module. Messages result from a button press from a programmed RFA key fob.

ACTIVE UNLOCK FOB (#) is displayed when the respective programmed RFA key fob is pressed to UNLOCK the vehicle.

ACTIVE LOCK is displayed when a lock button is pressed on any programmed RFA key fob.

REAR or PANIC is displayed when the respective button is pressed on any programmed RFA key fob.

When reprogramming a key fob, the state of the RFA system will also manually re-synchronize any key fob that is out of synchronization. Synchronization may be viewed on the scan tool as Manual Resync. In order to view, press down on both the LOCK and the UNLOCK buttons at the same time for about 4.3-7.3 seconds. A lock cycle, an unlock cycle, and a horn chirp will confirm that the re-synchronization was successful.

The possible scan tool plays for the RFA button presses are as follows:

Last RFA Cmd. Since Wake-Up

Range: NONE/ LOCK/ UNLOCK/ PANIC/ MANUAL RESYNC/ FOB PROGRAM/ DIAG ACKNOWLEDGE/ DIAG REQUEST

The Last RFA Cmd. Since Wake-Up information refers to the last RFA commanded message from the BCM, since the BCM has achieved a Wake-Up status. NONE is displayed when the BCM has awakened from the asleep statue without commanding a RFA module request. Messages result from a button press from a programmed RFA transmitter (key fob). The respective title is displayed when one of the following BCM button commands is pressed and the BCM is awake:

Door Handle Switch

Range: ACTIVE/ INACTIVE

The door handle switch information refers to the position of either of the door handles (outside or inside). For 4-door utility vehicles, the information refers to the front doors only. The information is used by the BCM for the illuminated entry feature.

ACTIVE is displayed when either of the handles is raised.

INACTIVE is displayed when neither of the front door handles is raised. The door handle switch input only applies to a utility vehicle. The right front door jamb switch is also on the circuit.

ACTIVE is displayed when the right front door is opened on a utility vehicle or a pick up truck.

INACTIVE is displayed when the right front door is completely closed on a utility vehicle or a pick up truck.

Driver Door Jamb Switch

Range: ACTIVE/ INACTIVE

The driver door jamb switch information refers to the position of the driver door.

INACTIVE is displayed when the driver door is closed and the switch plunger is pushed in.

ACTIVE is displayed when the driver door is open and the switch plunger is out.

Rear Passenger Door/ Lift Glass Jamb Switch

Range: ACTIVE / INACTIVE

The rear passenger door/ lift glass jamb switch information refers to the position of the following components:

ACTIVE is displayed when any of the rear passenger doors or the lift glass is not completely closed.

INACTIVE is displayed when both of the rear passenger doors and the lift glass are completely closed.

Rear Gate/ Door

Range: OPEN/ CLOSED

The rear gate/door information refers to the position of the rear gate/door and rear glass.

CLOSED is displayed when both the rear gate and the rear glass are completely closed.

OPEN is displayed when the rear gate or the rear glass is not completely closed.

Lift Glass Switch

Range: ON/ OFF

The lift glass switch information refers to the position of the dash mounted lift glass switch.

ON is displayed when the lift glass switch button is pressed in.

OFF is displayed when the lift glass switch button is not pressed in.

The BCM uses the data input in order to determine when to command the lift glass to release.

Key In Ignition

Range: YES/ NO

The key in ignition information refers to the position of the ignition key in the ignition switch.

YES displays when you completely insert the ignition key in the ignition switch cylinder.

NO displays when you do not completely insert the ignition ley into the ignition switch cylinder.

The BCM uses the data in order to control the operation of the key in ignition warning chime feature.

Seat Belt Buckled

Range: YES/ NO

The seat belt buckled information refers to the position of the driver seat belt buckle.

YES displays when you buckle the driver seat belt buckle (switch opened).

NO displays when you do not buckle the driver seat belt buckle (switch closed).

The BCM uses the data in order to control the operation of the seat belt warning chime.

Park Brake Switch

Range: SET/ RELEASED

The park brake switch information refers to the position of the park brake pedal.

SET displays when you depress the parking brake (switch closed).

RELEASED displays when you do not depress the parking brake switch (switch opened).

The BCM uses the data in order to control the operation of the following items:

RAP Relay Feedback

Range: ON/ OFF

The RAP feedback information refers to the operation of the retained accessory power (RAP) circuit. ON displays whenever the BCM turns ON the RAP relay. The RAP relay then allows the following components to operate:

Passenger Door Unlock Input

Range: ACTIVE/ INACTIVE

The passenger door unlock input information refers to the operation of the following items:

ACTIVE displays whenever the passenger door unlock relay coil is energized. An energized coil allows current to flow to the lock/unlock motors.

INACTIVE displays whenever the passenger door unlock relay is not energized. This condition prevents current from reaching the lock/unlock motors.

Door Lock Relay Feedback

Range: ON/ OFF

The door lock relay feedback information refers to the operation of the following items:

ON displays when the BCM senses the door lock relay coil is energized. This allows the current to flow to the lock/unlock motors.

OFF displays when the BCM does not sense that the door lock relay coil is being energized.

Horn Relay Input

Range: ACTIVE/ INACTIVE

The horn relay input information refers to the horn operation.

ACTIVE displays when the following conditions exist:

INACTIVE displays when the following conditions exist:

Input 2

Interior Lamp Request

Range: ACTIVE/ INACTIVE

The interior lamp request information refers to the interior lamp request circuit.

ACTIVE displays momentarily when the driver turns the interior lamp ON and the inadvertent power relay is ON.

INACTIVE displays when the inadvertent power relay is ON.

Headlamp Request Switch

Range: ACTIVE/ INACTIVE

The BCM uses the headlamp request switch input in order to determine the position of the headlamp switch.

ACTIVE displays when the headlamp switch is in the HEADLAMP position.

INACTIVE displays when the headlamp switch is not in the HEADLAMP position.

Headlamp Relay Feedback

Range: ON/ OFF

The BCM uses the headlamp Relay Feedback input in order to determine if the headlamps are ON or OFF by determining if current is present on the headlamp circuit. The BCM monitors CKT 352 in order to determine if the headlamp power relay energizes.

ON displays when the BCM receives a voltage input on the circuit between the headlamp switch and the headlamp power relay coil. The voltage input indicates that the headlamps are ON.

OFF displays when the BCM does not receive a voltage signal on the circuit between the headlamp switch and the headlamp power relay coil. The lack of voltage indicates that the headlamps are OFF.

High Beam Switch

Range: ON/ OFF

The BCM uses the high beam switch input in order to determine if the high beam headlamps are ON by measuring the voltage on CKT 524 between the following components:

Flash to Pass

Range: ON / OFF

The BCM monitors the flash to pass input on CKT 1356 in order to determine if the high beams are requested ON. The scan tool displays ON when the BCM or the flash to pass switch commands the high beams ON. OFF is displayed when the flash to pass switch or the BCM is not commanding the high beams ON.

Park Lamps

Range: ON/ OFF

The BCM monitors the voltage on the park lamp CKT 2409 in order to determine if the park lamps are ON. The scan tool displays ON when the BCM or the headlamp switch turns the park lamps ON. OFF displays when the neither the park lamp switch nor the BCM commands the park lamps to turn ON.

Daytime Running Lamps

Range: ON/ OFF

The BCM monitors the state of the daytime running lamps in order to determine if the daytime running lamps are ON.

The scan tool displays ACTIVE when the BCM commands the daytime running lamps to turn ON.

INACTIVE displays when the BCM does not command the DRL to turn ON.

Left Turn Signal

Range: ON/ OFF

The BCM uses the left turn signal input in order to determine the state of the left turn signal.

ON displays when the left turn signal switch engages. This commands the left turn signal lamps to illuminate.

OFF displays when the left turn signal switch does not engage or the turn signal lamps do not illuminate.

The BCM monitors the vehicle speed input for activation of the turn signal reminder chime feature. The scan tool display alternates between ON and OFF as the turn signal flashes.

Right Turn Signal

Range: ON/ OFF

The BCM uses the right turn signal input in order to determine the state of the right turn signal.

ON displays when the right turn signal switch engages. This commands the right turn signal lamps to illuminate.

OFF displays when the right turn signal switch does not engage or the turn signal lamps do not illuminate.

The BCM monitors the vehicle speed input for activation of the turn signal reminder chime feature. The scan tool display alternates between ON and OFF as the turn signal flashes.

Front Fog Lamp Switch

Range: ON/ OFF

The BCM uses the front fog lamp switch input in order to determine the status of the front fog lamp switch.

ON displays when you depress the front fog lamp switch.

OFF displays when you are not depressing the front fog lamp switch.

Rear Fog Lamp Switch (Export Only)

Range: ON/ OFF

The BCM uses the rear fog lamp switch (export only) input in determining the status of the rear fog lamp switch.

ON displays when you depress the rear fog lamp switch.

OFF displays when you are not depressing the rear fog lamp switch.

Dome Lamp Switch

Range: ON/ OFF

The BCM uses the dome lamp switch input in determining if the dome lamp switch (thumb wheel) is requesting the interior lights to turn ON.

ON displays if the dome lamp switch requests the BCM to turn the interior lights ON (full up position past the detent).

OFF displays when the dome lamp switch does not request the BCM to turn the interior lights ON (not in the full up position past the detent).

Dome Override Switch

Range: ON/ OFF

The BCM uses the dome override switch input from the dome override switch in order to allow or to defeat the interior lighting when the door opens. The dome override switch is located near the headlamp switch.

ON displays if the dome override switch is overriding the interior lighting.

OFF displays if the dome override switch allows the interior lights to turn ON when any door opens or if the left glass opens (if equipped).

Dim Pot Input

Range: ACTIVE/ INACTIVE

The BCM uses the dim pot input in order to determine the position of the dome lamp switch (thumb wheel) when the park lamps are ON.

ACTIVE displays when the dome lamp switch is not in the FULL DOWN position and the park lamps are ON.

INACTIVE displays when you turn the dome lamp switch to the FULL DOWN position (dash lights OFF) and the park lamps are ON.

The headlamp reminder chime does not sound under the following conditions:

Courtesy Lamp Relay

Range: ON/ OFF

The BCM uses the courtesy lamp relay input in order to determine the state of the courtesy lamp relay.

ON displays when the BCM commands the courtesy lamps to turn ON by providing a ground for the courtesy lamp relay coil.

OFF displays when the BCM is not commanding the courtesy lamps to turn ON by not providing a ground for the courtesy lamp relay coil.

Auto Headlamps Enable

Range: YES/ NO

The output refers to the BCM commanded state of the auto headlamp feature.

YES displays when the BCM commands the auto headlamps to turn ON.

NO displays when the BCM commands the auto headlamps to turn OFF.

Auto Headlamps

Range: ACTIVE/ INACTIVE

The BCM uses the auto headlamps input in order to determine if the auto headlamps are ON.

ACTIVE displays when the auto headlamps are ON.

INACTIVE displays when the auto headlamps are OFF.

Outputs

Chime

Range: NONE/ HEADLAMP/ KEY IN IGNITION/ SEAT BELT/ TURN SIGNAL

The chime output refers to the commanded state of the audible chime.

NONE displays when no audible chime sound is commanded.

HEADLAMP displays when the headlamp ON reminder feature commands the chime to turn ON.

KEY IN IGNITION displays when the key in ignition reminder feature and the driver door open feature command the chime to turn ON.

SEAT BELT displays when the driver seat belt not buckled reminder feature commands the chime to turn ON.

TURN SIGNAL displays when the turn signal ON reminder feature (on for more than 0.75 mile) commands the chime to turn ON.

Interior Lighting Mode

Range: NONE/ INTERIOR/ ILLUM ENTRY/ EXIT LIGHTING/ REMOTE ILLUM

The interior lighting mode output displays the name of the feature that is commanding the interior lights to turn ON.

NONE displays when the interior lights are not commanded to turn ON.

INTERIOR displays when the dome lamp switch commands the interior lights to turn ON.

ILLUM, ENTRY, EXIT LIGHTING, REMOTE ILLUM. display when the respective mode commands the interior lighting to turn ON.

Inadvertent Power Relay

Range: ON/ OFF

The inadvertent power relay output refers to the commanded state of the inadvertent power relay coil.

ON displays when the BCM commands the inadvertent power relay coil to energize. The command allows the relay to power up the following components:

OFF displays when the BCM does not command the inadvertent power relay coil to turn ON. The inadvertent power relay coil then does not allow current to the following components:

RAP Relay

Range: ON/ OFF

The RAP relay output refers to the commanded state of the RAP relay coil.

ON displays when the BCM commands the RAP relay coil to energize. The command allows the relay to power up the following components:

OFF displays when the BCM commands the RAP relay to turn OFF.

Headlamp Power Relay (Except Envoy)

Range: ON/ OFF

The headlamp power relay output refers to the commanded state of the headlamp power relay coil.

ON displays when the BCM commands the headlamp power relay coil to turn ON.

OFF displays when the BCM does not command the headlamp power relay coil to turn ON.

The BCM then does not allow current to the headlamp power relay coil. The headlamps remain OFF.

Low Beam Relay (Envoy Only)

Range: ON/ OFF

The headlamp power relay output refers to the commanded state of the headlamp power relay coil.

ON displays when the BCM commands the headlamp power relay coil to turn ON.

OFF displays when the BCM does not command the headlamp power relay coil to turn ON.

The BCM then does not allow current to the headlamp power relay coil. The headlamps remain OFF.

DRL Relay

Range: ON/ OFF

The DRL relay output refers to the commanded state of the DRL relay coil.

ON displays when the BCM commands the DRL relay coil to turn ON. This allows the relay to power up the daytime running lamps.

OFF displays when the BCM does not command the DRL relay coil to turn ON. This denies current to the DRL relay coil and causes the daytime running lamps to be OFF.

Park Lamp Relay

Range: ON/ OFF

The park lamp relay output refers to the commanded state of the park lamp relay coil.

ON displays when the BCM commands the park lamp relay coil to turn ON. This allows the relay to power up the park lamps.

OFF displays when the BCM does not command the park lamp relay coil to turn ON.

This denies current to the park lamps and causes the park lamps to be OFF.

Front Fog Lamp Relay

Range: ON/ OFF

The front fog lamp relay output refers to the commanded state of the front fog lamp relay coil.

ON displays when the BCM commands the front fog lamp relay coil to turn ON. This allows the relay to power up the front fog lamps.

OFF displays when the BCM does not command the front fog lamp relay coil to turn ON. This denies current to the front fog lamps and causes the front fog lamps to be kept OFF.

Rear Fog Lamp Relay (Export Only)

Tool Range: ON/ OFF

The rear fog lamp relay (export only) output refers to the commanded state of the rear fog lamp relay coil.

ON displays when the BCM commands the rear fog lamp relay coil to turn ON the relay, in order to power up the rear fog lamps.

OFF displays when the BCM does not command the rear fog lamp relay coil to turn ON. This denies current to the rear fog lamps and causes the rear fog lamps to be kept OFF.

Courtesy Lamp Relay

Range: ON/ OFF

The courtesy lamp relay output refers to the commanded state of the courtesy lamp relay coil.

ON displays when the BCM commands the courtesy lamp relay coil to turn ON. This allows the relay to power up the courtesy lamps, and causes the courtesy lamps to turn ON. OFF displays when the BCM does not command the courtesy lamp relay coil to turn ON. This causes the courtesy lamps to be kept OFF.

Dimming

Range: ACTIVE/ INACTIVE

The dimming output refers to the state of the headlamp switch dimming feature. The headlamp switch dimming feature is a term describing the customer's ability to control the illumination of the following components:

The up and down movement of the dome lamp switch allows the customer the ability to control the brightness of the components.

INACTIVE displays when the park lamps are OFF.

ACTIVE displays when the park lamps are ON.

Door Lock Relay

Range: ON/ OFF

The door lock relay output refers to the commanded state of the door lock relay coil.

ON displays when the BCM commands the door lock relay coil to turn ON.

ON momentarily displays when you press the RFA transmitter lock button or if you press the power lock button.

OFF displays when you do not press the RFA transmitter lock button or the power lock button.

Driver Door Unlock Relay

Range: ON/ OFF

The driver door unlock relay output refers to the commanded state of the driver door unlock relay coil.

ON displays when the BCM commands the driver door unlock relay coil to turn ON.

ON momentarily displays when you press the RFA transmitter unlock button or an input from the power door unlock switches. This causes the BCM to unlock the driver door.

OFF displays when the BCM does not command the driver door unlock relay coil to turn ON and the driver door unlock relay does not energize.

Passenger Door Unlock Relay

Range: ON/ OFF

The passenger door unlock relay output refers to the command state of the passenger door unlock relay coil.

ON displays when the BCM commands the passenger door unlock relay coil to turn ON.

ON displays momentarily when you press the RFA transmitter unlock button twice within 3 seconds.

OFF displays when you do not press the RFA transmitter unlock button twice within 3 seconds or if you use the passenger power door unlock button.

Lift Glass Relay

Range: ON/ OFF

The lift glass relay output refers to the commanded state of the lift glass relay coil.

ON displays when the BCM commands the lift glass relay coil to turn ON.

ON momentarily displays when you press the RFA transmitter lift glass release button twice within 3 seconds or you press the lift glass button.

OFF displays when you do not press the RFA transmitter lift glass release button twice within 3 seconds or you do not press the lift glass button.

Horn Relay

Range: ON/ OFF

The horn relay output refers to the commanded state of the horn relay coil. The horn button and the RFA transmitter panic button are inputs to the BCM. The BCM supplies a ground to the horn relay coil and sounds the horns.

ON displays when the BCM commands the horn relay coil to turn ON when you perform the following steps:

1. Press the horn button.
2. Press the transmitter panic button.

OFF displays when the BCM does not command the horn relay coil to turn ON and neither the RFA transmitter panic button nor the horn button are pressed.

Security Data

Ignition 1

Range: ACTIVE/ INACTIVE

The BCM uses the Ignition 1 data in order to determine the position of the ignition switch.

ACTIVE displays when the ignition switch is in the RUN or CRANK position.

INACTIVE displays when the ignition switch is not in the RUN or CRANK position.

Ignition 3

Range: ACTIVE/ INACTIVE

The BCM uses the Ignition 3 data in order to determine the position of the ignition switch.

ACTIVE displays when the ignition switch is in the RUN position.

INACTIVE displays when the ignition switch is not in the RUN position.

Battery Voltage

Range: 0.0-16.0 volts

The voltage value that displays refers to the battery system voltage measured by the BCM on CKT 1140.

Content Theft State

Range: OFF/ IDLE/ DISARMED/ READY TO ARM/ ARM INITIATED/ ARM DELAY/ ALARM/ ARMED

The state that displays refers to the state of the content theft system.

OFF STATE displays when ignition 1 is ACTIVE and all of the doors, including the rear glass, are closed.

IDLE STATE displays when ignition 1 is ACTIVE and under the following conditions:

DISARM STATE displays ignition 1 transforms from ACTIVE to INACTIVE and under the following conditions:

READY TO ARM STATE displays when ignition 1 transforms from ACTIVE to INACTIVE and under the following conditions:

ARM INITIATED STATE displays when ignition 1 is INACTIVE and under the following conditions:

ARM DELAY STATE displays when ignition 1 is INACTIVE and under the following conditions:

ARMED STATE displays when the vehicle is in the ARM DELAY state and all of the inputs are monitored in order to determine whether to alarm or disarm the system. In the ARM DELAY state, ignition 1 is INACTIVE, and all of the doors and the rear glass are closed.

ALARM STATE displays when the vehicle is in the ARMED STATE and the system detects a violation on any of the inputs being monitored.

Content Theft Lamp

Range: ON/ OFF/ FLASHING

The security lamp turns ON for 15 seconds and then turns OFF when you open a door by using the handle or the key fob. The security lamp also displays ON STEADY for 3 seconds and then turns OFF when the ignition switch turns from the OFF position to the RUN position. The security telltale has the following 3 states:

If the IPC is unable to communicate with the BCM, the security telltale displays ON STEADY and the Passlock™ system functions. The security telltale goes to FLASHING mode momentarily and then displays ON STEADY for approximately 10 minutes if the vehicle is in the lockout cycle. The Passlock™ system requires 3 consecutive lockout cycles in order to complete the 30 minute learn procedure for a changed component. Refer to Theft Deterrent on the theft deterrent system.

Door Key Switch

Range: ACTIVE/ INACTIVE

The door key switch is part of the driver door lock cylinder. The door key switch is an input to the BCM to turn OFF the content theft system. The function of the input is necessary when the correct key fob is not available. The BCM uses the input in order to determine the status of the door key switch.

ACTIVE displays when you turn the door key switch by using the door key.

INACTIVE displays when you do not turn the door key switch by using the door key.