The indicator description and operation uses generic indicator names. Refer to the table below for the indicators that are available on this vehicle:
Vehicle Indicator Name | Indicator Description Title |
|---|---|
ABS symbol | ABS Indicator |
Air Bag symbol | Air Bag Indicator |
Battery symbol | Charging System Indicator |
BRAKE | Brake System Indicator |
Check Engine symbol | Malfunction Indicator Lamp (MIL) |
CHECK GAGES | Check Gages Indicator |
DRL symbol | Lighting System Indicator(s) |
Engine Oil Pressure symbol | Engine Oil Indicator(s) |
Fasten Safety Belt symbol | Fasten Safety Belt Indicator |
High Beam symbol | Lighting System Indicator(s) |
Low Coolant Level | Engine Coolant Indicator(s) |
LOW TRAC | Traction Control System Indicator(s) |
SERVICE VEHICLE SOON | Electrical System Indicator |
THEFT SYSTEM | Theft System Indicator(s) |
TRAC OFF | Traction Control Indicator(s) |
Turn Signals | Lighting System Indicator(s) |
Upshift Indicator | Shift Indicator |
ABS Indicator
The IPC illuminates the ABS indicator when the following occurs:
| • | The electronic brake control module (EBCM) detects a malfunction with the antilock brake system. The IPC receives a class 2 message from the EBCM requesting illumination. |
| • | The IPC performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds. |
| • | The IPC detects a loss of class 2 communications with the EBCM. |
Air Bag Indicator
The IPC illuminates the air bag indicator when the following occurs:
| • | The inflatable restraint sensing and diagnostic module (SDM) detects a malfunction with the supplemental inflatable restraint system. The IPC receives a class 2 message from the SDM requesting illumination. |
| • | The IPC performs the displays test at the start of each ignition cycle. The IPC flashes the air bag indicator 7 times. |
| • | The IPC detects a loss of class 2 communications with the SDM. |
Brake System Indicator
The IPC illuminates the brake indicator when any of the following occur:
| • | The body control module (BCM) detects that the park brake is engaged. The IPC receives a class 2 message from the BCM requesting illumination. If the vehicle is shifted out of park with the park brake engaged, the BCM sends a class 2 message to the radio in order to activate the audible warning. |
| • | The BCM detects a low brake fluid condition. The IPC receives a class 2 message from the BCM requesting illumination. |
| • | The EBCM detects a brake failure condition. The IPC receives a class 2 message from the EBCM requesting illumination. |
| • | The IPC performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds. |
| • | The IPC detects a loss of class 2 communications with either the BCM or the EBCM. |
Charging System Indicator
The IPC illuminates the charge indicator in the message center when the following occurs:
| • | The PCM detects that the generator output is less than 11 volts or greater than 16 volts. The IPC receives a class 2 message from the PCM requesting illumination. |
| • | The IPC determines that the system voltage is less than 11 volts or greater than 16 volts. The IPC receives a class 2 message from the body control module (BCM) indicating the system voltage. |
| • | The IPC performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds. |
| • | The ignition is ON, with the engine OFF. |
Check Gauges Indicator
The IPC illuminates the CHECK GAGES indicator when any of the following occur:
| • | The PCM sends coolant temperature to the BCM via class 2. The BCM detects that the engine coolant temperature is greater than 253°F (123°C). The IPC receives a class 2 message from the BCM requesting illumination. The IPC sends a class 2 message to the BCM indicating that the indicator is illuminated. The BCM sends a class 2 message to the radio in order to activate an audible warning. |
| • | The PCM sends fuel level data to the BCM via class 2, and the BCM detects that the fuel level is less than 4 percent. The IPC receives a class 2 message from the BCM requesting illumination. The IPC sends a class 2 message to the BCM indicating that the indicator is illuminated. The BCM sends a class 2 message to the radio in order to activate an audible warning. |
Electrical System Indicator
SERVICE VEHICLE SOON
The IPC illuminates the service vehicle soon indicator when any of the following occur:
| • | The IPC part number does not match the programmed model configuration number. |
| • | The BCM detects a PASSLOCK™ fault. The IPC receives a class 2 message from the BCM requesting illumination. |
| • | The BCM stores specific lighting and horn codes. The IPC receives a class 2 message from the BCM requesting illumination. |
| • | The BCM detects a passive trunk release fault. The IPC receives a class 2 message from the BCM requesting illumination. |
| • | The EBCM detects a traction control system failure. The IPC receives a class 2 message from the EBCM requesting illumination. |
| • | The IPC performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds. |
Engine Coolant Indicator(s)
LOW COOLANT LEVEL
The IPC illuminates the low coolant warning indicator when any of the following occur:
| • | The BCM detects a low coolant level condition for at least 30 seconds. The IPC receives a class 2 message from the BCM requesting illumination. |
| • | The IPC performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds. |
Fasten Safety Belt Indicator
The IPC illuminates the fasten safety belt indicator when any of the following occur:
| • | The inflatable restraint sensing and diagnostic module (SDM) detects that the driver's seat belt is unbuckled (signal circuit is low). The BCM receives the seat belt switch state via class 2 from the SDM. The IPC receives a class 2 message from the BCM requesting illumination. The IPC illuminates the indicator for 20 seconds and then flashes the indicator for 55 seconds. The IPC sends a class 2 message to the BCM indicating that the indicator is illuminated. The BCM sends a class 2 message to the radio in order to activate an audible warning. |
| • | The IPC performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds. |
Lighting System Indicator(s)
High Beam
The IPC illuminates the high beam indicator when the body control module (BCM) detects that the high beams are requested. The BCM divides the voltage present on the headlamp high beam signal circuit by the system voltage in order to determine a percentage value. The value is compared against a calibration in order to determine if the high beams are on. The IPC receives a class 2 message from the BCM requesting illumination.
Turn Signals
The right and left turn signal indicators are hard wired to the turn signal switch and hazard switch. The turn signal indicator illuminates when the turn signal lamps supply voltage circuit is active. The body control module is also hard wired to the turn signal switch. If the BCM determines that the turn signal flasher signal circuit is active for more than 1.2 km (0.75 mi), the BCM sends a class 2 message to the radio in order to activate an audible warning.
Daytime Running Lamps
The IPC day time running lamp indicator illuminates when any of the following occur:
| • | The vehicle is in motion with the headlamps off and the park brake unapplied. |
| • | The park brake is on and vehicle speed has exceeded a certain level. |
Low Oil Pressure Indicator
The IPC illuminates the low oil pressure indicator when any of the following occur:
| • | The PCM detects that the oil pressure is low (signal circuit is low). The IPC receives a class 2 message from the PCM requesting illumination. |
| • | The IPC performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds. |
Malfunction Indicator Lamp (MIL)
The PCM illuminates the MIL (service engine soon or check engine) when the following occurs:
| • | The PCM detects a malfunction in the emissions system. |
| • | The PCM performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds. |
| • | The ignition is on, with the engine off. |
Shift Indicator
The IPC illuminates the shift indicator when the following occurs:
| • | The PCM determines that the vehicle should be shifted to the next higher gear. The IPC receives a class 2 message from the PCM requesting illumination. |
| • | The IPC performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds. |
Theft System Indicator
The IPC illuminates the theft deterrent indicator as determined by the theft deterrent system. The IPC receives a class 2 message from the BCM requesting illumination.
| • | The vehicle theft deterrent (VTD) system requests the IPC to illuminate the indicator only when the ignition switch is ON. |
| • | The content theft deterrent (CTD) system requests the IPC to illuminate the indicator only when the ignition switch is in the OFF or ACC positions or during RAP. |
| • | The body control module performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds. |
Traction Control System Indicator(s)
Low Traction
The IPC illuminates the low traction indicator when the following occurs:
| • | The electronic brake control module (EBCM) detects a traction control event. The IPC receives a class 2 message from the EBCM requesting illumination. |
| • | The IPC performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds. |
Traction Off
The IPC illuminates the traction off indicator when the following occurs:
| • | The electronic brake control module (EBCM) inhibits the traction control system. The IPC receives a class 2 message from the EBCM requesting illumination. The traction control system is disabled when the following occurs: |
| - | For Chevrolet only, the shift lever is in FIRST (1) or SECOND (2) gear. The EBCM receives a class 2 message from the powertrain control module (PCM) indicating the gear position. |
| - | For Pontiac and Oldsmobile only, the body control module (BCM) detects that the traction control switch is pressed (signal circuit is low). The EBCM receives a class 2 message from the BCM indicating the switch status. |
| - | The BCM detects that the park brake is engaged (signal circuit is low) and that the engine is on. The EBCM receives a class 2 message from the BCM indicating the park brake status. |
| - | The PCM detects certain malfunctions and is unable to perform torque reduction requests from the EBCM. The EBCM receives a class 2 message from the PCM indicating that traction control cannot be performed. |
| • | The EBCM detects a malfunction in the traction control system. The IPC receives class 2 messages from the EBCM requesting illumination of both the service vehicle soon and traction off indicators. |
| • | The IPC performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds. |
