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(s) |
BRAKE symbol | Brake System Indicator(s) |
Charging System symbol | Charging System Indicator(s) |
Check Engine symbol | Malfunction Indicator Lamp (MIL) |
CHECK OIL | Engine Oil Indicator(s) |
CRUISE | Cruise Control Indicator |
Door Ajar symbol | Door Ajar Indicator(s) |
Engine Coolant Temperature symbol | Engine Coolant 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 Engine Coolant symbol | Engine Coolant Indicator(s) |
Low Fuel symbol | Fuel System Indicator(s) |
LOW WASH | Washer Fluid Indicator(s) |
SERVICE VEHICLE SOON | Electrical System Indicator(s) |
THEFT SYSTEM | Theft System Indicator(s) |
Turn Signals symbol | Lighting System Indicator(s) |
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 body control module (BCM) receives a class 2 message from the EBCM requesting illumination. The BCM sends a message to the IPC via the serial peripheral interface (SPI) requesting illumination. The BCM also 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. |
| • | The IPC detects a loss of SPI communications with the BCM. |
| • | The BCM 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 body control module (BCM) receives a class 2 message from the SDM requesting illumination. The BCM sends a message to the IPC via the serial peripheral interface (SPI) requesting illumination. The BCM also 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 as commanded by the BCM. The IPC flashes the air bag indicator 7 times. |
| • | The IPC detects a loss of SPI communications with the BCM. |
| • | The BCM detects a loss of class 2 communications with the SDM. |
Brake System Indicator
The body control module (BCM) sends a message to the IPC via the serial peripheral interface (SPI) requesting illumination. The IPC illuminates the brake indicator when the following occurs:
| • | The BCM detects that the park brake is engaged. If the vehicle speed is greater than 5 km/h (3.1 mph) with the park brake engaged, the BCM sends a class 2 message to the radio in order to activate an audible warning. |
| • | The BCM detects a low brake fluid condition, signal circuit is low. The BCM also sends a class 2 message to the radio in order to activate an audible warning. |
| • | The BCM detects a malfunction in the brake fluid level circuit. The BCM also sends a class 2 message to the radio in order to activate an audible warning. |
| • | The electronic brake control module (EBCM) detects a malfunction in the braking system. The BCM receives a class 2 message from the EBCM requesting illumination. The BCM also 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 as commanded by the BCM. The indicator illuminates for approximately 3 seconds. |
Charging System Indicator
The body control module (BCM) sends a message to the IPC via the serial peripheral interface (SPI) requesting illumination. The IPC illuminates the charging system indicator when the following occurs:
| • | The PCM detects that the generator output is less than 11 volts or greater than 16 volts. The BCM receives a class 2 message from the PCM requesting illumination. The also 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 as commanded by the BCM. The indicator illuminates for approximately 3 seconds. |
| • | The PCM determines that the ignition is on, with the engine off or the ignition is in the accessory position. The BCM receives a class 2 message from the PCM requesting illumination. |
Cruise Control Indicator
The IPC illuminates the CRUISE indicator when the PCM detects that the cruise control is requested. The body control module (BCM) receives a class 2 message from the PCM requesting illumination.The BCM sends a message to the IPC via the serial peripheral interface (SPI) requesting illumination.
Door Ajar Indicator
The IPC illuminates the door ajar indicator when the ignition is on and the body control module (BCM) detects that one of the vehicle's doors is ajar (signal circuit is low). The BCM sends a message to the IPC via the serial peripheral interface (SPI) requesting illumination. The BCM also sends a class 2 message to the radio in order to activate an audible warning.
Electrical System Indicator
The IPC illuminates the SERVICE VEHICLE SOON indicator when the following occurs:
| • | The body control module (BCM) detects certain malfunctions in the lighting system or the horn system. |
| • | The PCM detects certain non-emissions related malfunctions. The BCM receives a class 2 message from the PCM requesting illumination. |
The BCM sends a message to the IPC via the serial peripheral interface (SPI) requesting illumination. The BCM also sends a class 2 message to the radio in order to activate an audible warning.
Engine Coolant Indicators
Engine Coolant Temperature
The IPC illuminates the engine coolant temperature indicator when the body control module (BCM) determines that the coolant temperature is greater than 123°C (253°F). The BCM receives a class 2 message from the PCM indicating the coolant temperature. The BCM sends a message to the IPC via the class 2 requesting illumination.
Low Engine Coolant Level
The IPC illuminates the low engine coolant level indicator when the body control module (BCM) detects a low voltage level on the signal circuit, indicating a low coolant level condition, for greater than 10 seconds and the ignition is ON. The BCM sends a message to the IPC via the class 2 requesting illumination.
Engine Oil Indicator(s)
CHECK OIL
The IPC illuminates the CHECK OIL indicator when the following occurs:
| • | The PCM detects a low engine oil level condition (signal circuit is high). The PCM only monitors the oil level switch signal circuit for a brief period between key on and engine crank. The body control module (BCM) receives a class 2 message from the PCM requesting illumination. The BCM sends a message to the IPC via the serial peripheral interface (SPI) requesting illumination. The BCM also 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 as commanded by the BCM. The indicator illuminates for approximately 3 seconds. |
Engine Oil Pressure
The IPC illuminates the engine oil pressure indicator when the following occurs:
| • | The PCM detects low oil pressure (signal circuit is low). The body control module (BCM) receives a class 2 message from the PCM requesting illumination. The BCM sends a message to the IPC via the serial peripheral interface (SPI) requesting illumination. The BCM also 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 as commanded by the BCM. The indicator illuminates for approximately 3 seconds. |
Fasten Safety Belt Indicator
The IPC illuminates the fasten safety belt indicator when the following occurs:
| • | The body control module (BCM) detects that the driver's seat belt is unbuckled. The BCM sends a message to the IPC via the serial peripheral interface (SPI) requesting illumination. The IPC illuminates the indicator for 20 seconds and then flashes the indicator for 55 seconds. The BCM also 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 as commanded by the BCM. The indicator illuminates for approximately 3 seconds. |
| • | The IPC detects a loss of SPI communications with the BCM. |
Fuel System Indicator
Low Fuel
The IPC illuminates the low fuel indicator when the following occurs:
| • | The body control module (BCM) determines that the fuel level is less than a pre-determined value. The BCM receives a class 2 message from the PCM indicating the fuel level percent. The BCM sends a message to the IPC via the serial peripheral interface (SPI) requesting illumination. The BCM also sends a class 2 message to the radio in order to activate an audible warning. |
| • | The PCM detects a malfunction in the fuel level sensor circuit. |
| • | The BCM detects a loss of class 2 communications with the PCM. |
| • | The IPC detects a loss of SPI communications with the BCM. |
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. This value is compared against a calibration in order to determine if the high beams are on. The BCM sends a message to the IPC via the serial peripheral interface (SPI) requesting illumination.
Turn Signals
The right and left turn signal indicators are hard wired to the turn signal switch and the hazard switch. The turn signal indicator illuminates when the turn signal lamps supply voltage circuit is active. The body control module (BCM) 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 mile), the BCM sends a class 2 message to the radio in order to activate an audible warning.
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. |
Theft System Indicator(s)
The IPC illuminates the theft system indicator as determined by the vehicle theft deterrent (VTD) system. The body control module (BCM) sends a message to the IPC via the serial peripheral interface (SPI) requesting illumination.
| • | The VTD system requests the IPC to illuminate the indicator only when the ignition switch is ON. The VTD system uses the indicator as a malfunction indicator. |
| • | The IPC performs the displays test at the start of each ignition cycle as commanded by the BCM. The indicator illuminates for approximately 3 seconds. |
Washer Fluid Indicator
The IPC illuminates the low washer fluid indicator when the following occurs:
| • | The body control module (BCM) detects a low washer fluid condition (signal circuit is low) for greater than 30 seconds. The BCM sends a message to the IPC via the serial peripheral interface (SPI) requesting illumination. The BCM also 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 as commanded by the BCM. The indicator illuminates for approximately 3 seconds. |
