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 |
APPLY PARK BRAKE | Park Brake Indicators |
AUX BRAKE | Hydraulic Brake Indicators |
Battery symbol | Charging System Indicators |
Check Engine symbol (Canada) | Malfunction Indicator Lamp (MIL) |
CHECK GAUGES | Check Gauges Indicator |
Day Time Running Lamps symbol | Lighting System Indicators |
Differential Lock symbol | Driveline Indicator |
Exhaust Brake symbol | Exhaust Brake Indicator |
Fasten Seat Belt symbol | Fasten Safety Belt Indicators |
High Beam symbol | Lighting System Indicators |
INTAKE HEATER | Intake Heater Indicator |
LOW COOLANT | Engine Coolant Indicators |
PARK BRAKE | Park Brake Indicators |
PRIMARY BRAKE | Air Brake Indicators |
PRIMARY BRAKE | Hydraulic Brake Indicators |
SERVICE ENGINE SOON (US) | Malfunction Indicator Lamp (MIL) |
SERVICE PARK BRAKE | Park Brake Indicators |
Turn Signal symbols | Lighting System Indicators |
ABS Indicator
The ABS indicator illuminates in the IPC when the following occurs:
| • | The electronic brake control module (EBCM) detects a malfunction in the ABS system. |
| • | The displays test is performed in the IPC at the start of each ignition cycle. |
Air Brake Indicator
PRIMARY BRAKE
The PRIMARY BRAKE indicator illuminates in the IPC when the following occurs:
| • | The air pressure drops below 65 psi (448 kPa). The multifunction alarm module monitors the low air pressure switch and activates an alarm when it detects that the air pressure is low (signal circuit is low). |
| • | The multifunction alarm module performs the displays test at the beginning of each ignition cycle. |
Charging System Indicator
The charge indicator illuminates in the IPC when the following occurs:
| • | The generator output is less than 11 volts or more than 16 volts. |
| • | The displays test is performed in the IPC 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 CHECK GAUGES indicator illuminates in the IPC when the following occurs:
| • | The multifunction alarm module (MFAM) detects that the engine oil pressure is approximately 5 psi (34 kPa) or below. |
| • | The MFAM detects that the engine coolant temperature is approximately 118°C (245°F) or above. |
| • | The MFAM detects the engine coolant level is below the coolant level probe. |
| • | The engine is about to be shutdown (if equipped with automatic engine shutdown). When an extreme high coolant temperature or a low engine oil pressure condition is present, the MFAM will activate the CHECK GAUGES indicator and an audible warning. After approximately 25 seconds the MFAM will send a signal to the PCM to stop fuel flow at the injectors and shutdown the engine. |
| • | The displays test is performed by the MFAM at the beginning of each ignition cycle. |
In any of these conditions the MFAM activates an audible warning.
Driveline Indicator
DIFFERENTIAL LOCK INDICATOR
The IPC illuminates the DIFF LOCK when the system is activated from the switch. The air pressure increases to 5 psi (34 kPa), the differential lock switch closes grounding the differential lock indicator control circuit.
Engine Coolant Indicator
LOW COOLANT LEVEL
The multifunction alarm module illuminates the LOW COOLANT indicator in the IPC when it detects a low coolant level from the coolant level switch signal circuit. The multifunction alarm module also activates an audible warning for approximately 10 seconds.
Exhaust Brake Indicator (Diesel Engines)
The exhaust brake indicator illuminates in the IPC when the exhaust brake is active. The exhaust brake system requires inputs from the transmission control module (TCM), vehicle interface module (VIM) or the exhaust brake disable relay in order to activate once the exhaust brake switch is engaged.
Fasten Safety Belt Indicator
The safety belt indicator illuminates in the instrument panel cluster (IPC) when the ignition is ON. The seat belt timer in the IPC controls the lamp. After a predetermined time, (approximately 5 seconds) the timer turns off and the lamp will remain off until the next ignition cycle.
Hydraulic Brake Indicators
AUX BRAKE
The multifunction alarm module illuminates the AUX BRAKE indicator in the IPC when the following occurs:
| • | The multifunction alarm module (MFAM) detects a malfunction in the auxiliary brake system. The MFAM grounds the auxiliary brake indicator control circuit. The MFAM also activates an audible warning. |
| • | The MFAM performs the displays test at the beginning of each ignition cycle. The indicator illuminates for approximately 3 seconds. |
PRIMARY BRAKE
The multifunction alarm module illuminates the PRIMARY BRAKE indicator in the IPC when the following occurs:
| • | The MFAM detects a low brake fluid level from the brake fluid level switch (signal is low). The MFAM grounds the primary brake indicator control circuit and activates an audible warning. |
| • | The MFAM performs the displays test at the beginning of each ignition cycle. The indicator illuminates for approximately 3 seconds. |
Intake Heater Indicator
The engine control module (ECM) illuminates the intake heater indicator lamp in the IPC via the intake heater relay (signal is low). The relay activates the indicator via the intake heater indicator control circuit by providing battery positive voltage to the indicator.
Lighting System Indicators
DAYTIME RUNNING LAMPS (DRL)
The DRL relay illuminates the DRL indicator when the following occurs:
| • | The DRL's are activated. The DRL indicator relay grounds the DRL indicator control circuit. |
| • | The ambient light conditions are low. The DRL indicator relay grounds the DRL indicator control circuit. |
HIGH BEAM
The HIGH BEAM indicator illuminates in the IPC when the high beams are requested from the headlamps dimmer switch/multifunction switch.
TURN SIGNALS
The turn signal indicators illuminate in the IPC when the ignition is ON and the left or right turn signal is requested from the switch. An audible warning is also activated by the multifunction alarm module as a reminder that the turn signal is on .
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. |
Park Brake Indicators
APPLY PARK BRAKE
The APPLY PARK BRAKE indicator illuminates in the IPC when the park brake module detects that the park brake is not applied with the ignition OFF. The multifunction alarm module activates an audible warning.
PARK BRAKE INDICATOR
The PARK BRAKE indicator illuminates in the IPC when the following occurs:
| • | The park brake control module detects that the park brake is engaged (signal is low) with the ignition ON. |
| • | The displays test is performed at the beginning of each ignition cycle. The indicator illuminates for approximately 3 seconds. |
SERVICE PARK BRAKE
The park brake control module illuminates the SERVICE PARK BRAKE indicator when it detects a malfunction in the electronic/hydraulic park brake system. The multifunction alarm module (MFAM) activates an audible warning.
