Warning and indicator lamps

Warning and indicator lamps

The INFO DISPL lamp comes on when a message is displayed on SID. The lamp is powered with +15 from the main instrument unit and grounded by the main instrument unit control module. SID sends continuous bus information INFO DISPL, unit ON/OFF.

On receiving INFO DISPL ON, the control module grounds the output for the lamp which then lights up.

The main instrument unit lights this lamp for 3 seconds when the ignition is switched on.

Diagnostics

The function has no diagnostics.

Central warning lamp

The central warning lamp lights up when a fault occurs in a system having to do with the car's safety.

The lamp is supplied with current (+15 circuit) from the main instrument unit and grounded by the MIU's control module when one of the following warning or indicator lamps lights up:

•	Warning lamp, AIRBAG

•	Engine oil pressure warning lamp

•	Warning lamp, charging

•	Warning lamp, brake fluid level

•	Warning lamp, handbrake

•	ABS warning lamp

The handbrake lamp lights the central warning lamp if the speed passes 5 km/h from a speed below 5 km/h.

Common to the above lamps is that they are supplied with current (+15 circuit) in the main instrument unit and grounded through the relevant component/system.

The central warning lamp also lights up when:

•	Coolant temperature exceeds 129°C

At the same time as the central warning lamp comes on, the main instrument unit will send bus information to SID to activate the acoustic signal. This does not take place when the ignition is switched on as the lamps are only tested at this point. The engine speed must exceed 310 rpm for this request.

Diagnostics

The function has no diagnostics.

Engine oil pressure warning lamp

The oil pressure warning lamp is located in the top right-hand corner. It warns the driver when engine oil pressure is too low.

The lamp is supplied with current in the main instrument unit and grounded via terminal 2 (K20) of the oil pressure sensor.

If the oil pressure is below 0.3-0.5 bar, the oil pressure sensor will close, the circuit will be grounded and the lamp will come on. Meanwhile, the central warning lamp will come on and at engine speeds above 310 rpm, MIU will send a request to SID to activate the acoustic signal.

Diagnostics

The function has no diagnostics.

Warning lamp, charging

The charging warning lamp is located in the top right-hand corner and informs the driver whether the generator is charging or not.

The lamp is supplied with current in the main instrument unit and grounded by the generator via terminal 3 (K20).

If the generator is not rotating or if it is not charging for some reason, the circuit for the warning lamp will be grounded via the regulator through the generator field winding, whereby the lamp will come on. Meanwhile, the central warning lamp will come on and at engine speeds above 310 rpm, MIU will send a request to SID to activate the acoustic signal.

When the generator is charging, its D+ and B+ terminals will have the same voltage. Both terminals of the warning lamp will then be supplied with this same voltage and the lamp goes out.

A resistor is connected in parallel with the lamp. This resistor ensures that magnetizing current is supplied to the generator on starting even if the lamp is faulty.

A diode is connected in series with the resistor/lamp. This diode prevents the lamp from glowing at high charging voltages.

Diagnostics

The function has no diagnostics.

Warning lamp, AIRBAG

The AIRBAG warning lamp is located in the right-hand part of the main instrument unit. This lamp informs the driver when a fault occurs in the Airbag system. The central warning lamp serves as a second airbag warning lamp and does not go out until all its warning inputs are normal.

The AIRBAG warning lamp is supplied with current (+15 circuit) in the main instrument unit via pin 1 (K20) of the Airbag control module.

If a fault should arise in the system, the AIRBAG warning lamp and the central warning lamp will come on and at engine speeds above 310 rpm, MIU will send a request to SID to activate the acoustic signal.

If the Airbag system has been activated - sent detonating current to the explosive charges in the gas generators - the AIRBAG Warning lamp and central warning lamp will light up and stay on.

The airbag control module lights the lamp when the ignition is turned on. If there are no faults, the lamp will go out after about 3 seconds.

Diagnostics

An open circuit/short circuit sets a diagnostic trouble code in the Airbag control module.

Warning lamp, brake fluid level

The brake fluid level warning lamp is located in the right-hand section of the main instrument unit and warns the driver if the level in the brake fluid reservoir becomes too low. The lamp also comes on if there is a fault in the ABS system.

The lamp is supplied with current in the main instrument unit and grounded via terminal 12 (K20) of the brake fluid reservoir.

If the level is too low, the central warning lamp will also come on and at engine speed above 310 rpm, MIU will send a request to SID to activate the acoustic signal.

The main instrument unit lights the brake fluid level warning lamp for 3 seconds when the ignition is turned on.

Diagnostics

The function has no diagnostics.

Warning lamp, handbrake

The handbrake warning lamp is located in the right-hand part of the main instrument unit. It comes on to inform the driver that the handbrake is applied.

The lamp is supplied with current in the main instrument unit. As long as the handbrake remains applied, the switch operated by the handbrake lever grounds the lamp via terminal 11 (K20), causing it to light up.

If the speed passes 5 km/h from a speed lower than 5 km/h while the handbrake is applied, the central warning lamp will also come on and MIU will send a request to SID to activate the acoustic signal.

Diagnostics

The function has no diagnostics.

TCS indicator lamp

The TCS indicator lamp is situated on the left-hand side of the main instrument unit (in the tachometer). The lamp comes on during TCS modulation.

The indicator lamp is turned on after the TC/ABS control module has put information on the P-bus.

The lamp comes on during TCS modulation after a short delay (300 ms) and stays on while the system is active but for at least one second. The indicator lamp comes on for 3-5 seconds when the ignition is turned on.

Diagnostics

The function has no diagnostics.

TCS OFF indicator lamp

If a fault should arise in the TC/ABS system, the TCS OFF indicator lamp will be turned on via the P-bus. The indicator lamp will also come on when the system is disengaged manually, which can be done at speeds lower than 60 km/h (37.5 mph) by pressing in the TCS button. The system can be reactivated at any speed by pressing the TCS button, whereby the TCS OFF indicator lamp will go out again.

The lamp will come on when the ignition is turned on and it will go off again after 3-5 seconds provided no faults are detected.

Diagnostics

A system fault affecting the ABS function will turn on the ABS and brake fluid level warning lamps and the central warning lamp.

If the bus message from TC/ABS is absent for 2 seconds, the TCS OFF and ABS lamps will be turned on. If the bus message is absent for a further 8 seconds, the central warning lamp and the warning lamp for defective brakes will also come on.

ABS warning lamp

The ABS or TC/ABS control module monitors the function of the ABS system and if a fault arises, it will turn on the ABS warning lamp situated in the right-hand section of the main instrument unit.

When the ABS lamp lights up, the anti-lock braking system is disabled and the brakes work just like a conventional braking system.

In cars with ABS (not bus systems) , the lamp is powered by the main instrument unit and is grounded via the main instrument unit connection 10 (K20) in the TC/ABS control module.

In cars with TC/ABS (bus systems) , the main instrument unit receives information on the bus to turn on/off the lamp.



The TC/ABS control module turns on the lamp when the ignition is turned on and it will go out after about 3 seconds provided no faults are detected.

The brake fluid level warning lamp and the central warning lamp will come on once the ABS warning lamp has come on.

Diagnostics

The function has no diagnostics.

SPORT indicator lamp

The SPORT indicator lamp on cars with automatic transmission will come on after pressing the Sport button (S) on the selector lever. The sport function can be activated with the selector lever in position D, 3, 2 and 1.

In SPORT mode, the transmission remains longer in each gear.

The lamp is powered from the main instrument unit and is grounded by the main instrument unit control module. TCM sends continuous bus information SPORT, unit ON/OFF.

The indicator lamp goes out under the following conditions:

•	When the sport button is depressed again.

•	When the transmission is in Limp-home mode.

•	When Winter mode is selected.

•	If the ignition is turned off and then on again.

•	Selector lever to P or R.

Diagnostics

The function has no diagnostics.

WINTER indicator lamp

To facilitate moving off on slippery road surfaces, the TCM has a winter mode, i.e. the car starts in 3rd gear when the Winter button (W) beside the selector lever is depressed.

The lamp is powered from the main instrument unit and is grounded by the main instrument unit control module. TCM sends continuous bus information WINTER, unit ON/OFF.

With WINTER ON, the control module grounds the output for the lamp to turn it on.

The indicator lamp goes out under the following conditions:

•	When the Winter button is pressed again.

•	When the transmission is in Limp-home mode.

•	If the ignition is turned off and then on again.

•	When the transmission fluid temperature is above 140°C.

Diagnostics

The function has no diagnostics.

CHECK GEARBOX indicator lamp

If there is a fault in the automatic transmission or its control module, the TCM lights the CHECK GEARBOX warning lamp in the main instrument unit.

The lamp is powered from the main instrument unit and is grounded by the main instrument unit control module. TCM sends continuous bus information CHECK GEARBOX, unit ON/OFF.

With CHECK GEARBOX on, the control module grounds the output for the lamp to turn it on.

The lamp will go out when TCM sends the message CHECK GEARBOX OFF.

When the ignition is turned on, the TCM lights the lamp for approx. 3 seconds and if there is no fault the lamp will go out.

Diagnostics

The function has its own diagnostics in the sending system.

Fuel reserve indicator lamp

When there is only about 10 litres of fuel remaining in the tank a lamp comes on to indicate low fuel level. The lamp is supplied with current in the main instrument unit and when it should light up it is grounded by the main instrument unit's control module.

The main instrument unit lights the lamp for 3 seconds when the ignition is switched on.

Diagnostics

An open circuit/short circuit sets diagnostic trouble code B1720. The gauge needle indicates 0 litres and the fuel reserve indicator lamp lights up.

CHECK ENGINE indicator lamp

The CHECK ENGINE lamp (MIL) warns the driver when a fault occurs in the engine management system.

The lamp is powered from the main instrument unit and is grounded by the main instrument unit control module. Trionic T7 sends continuous bus information CHECK ENGINE, unit ON/OFF.

With CHECK ENGINE ON, the control module grounds the output for the lamp to turn it on.

TCM will turn on the CHECK ENGINE lamp on certain markets.

With the ignition ON the lamp remains on until the engine starts. If there are no faults the lamp will go out.

If Trionic T7 changes the status of the message to CHECK ENGINE OFF, the lamp will go out.

Diagnostics

The function has no diagnostics.

Direction indicator repeater lamps RH and LH

The repeater lamps are situated in the upper part of the main instrument unit and show when the direction indicators are on.

The lamps are supplied with current in the main instrument unit and grounded by the MIU's control module. DICE continuously sends bus information on the status of DIRECTION INDICATORS RIGHT and DIRECTION INDICATORS LEFT, unit ON/OFF.

On receiving DIRECTION INDICATORS ON, the control module grounds the output of the lamp in question which then lights up.

Example

If the LH direction indicators are activated, DICE will change the status of the information DIRECTION INDICATORS LEFT ON/OFF at the same time as the direction indicator lamps are lit. In this way, the main instrument unit control module can synchronize the flashing of the repeater lamps with the direction indicator lamps.

The SID also activates the TIC-TAC sound at the same time as the lamps flash.

The function is the same for the RH direction indicators.

Hazard flashers

The hazard flashers function is the same as for direction indicators Left/Right except that both lamps are activated at the same time.

When the hazard flashers are activated and the ignition is OFF, the indicator lamps will not flash.

Diagnostics

The function has no diagnostics.

Cruise indicator lamp

The CRUISE indicator lamp is located in the left-hand part of the main instrument unit. It comes on when the cruise control system is engaged.

The lamp is powered from the main instrument unit and is grounded by the main instrument unit control module. Trionic T7 sends continuous bus information CRUISE Lamp, unit ON/OFF.

With CRUISE Lamp ON, the control module grounds the output for the lamp to turn it on.

If cruise control is disengaged, Trionic T7 will change the status of the information to CRUISE Lamp OFF and the lamp will go out.

Diagnostics

The function has its own diagnostics in the sending system.

SHIFT UP indicator lamp

To achieve low fuel consumption, the SHIFT UP indicator lamp in the main instrument unit comes on when a higher gear should be engaged (certain markets).

The lamp is powered from the main instrument unit and is grounded by the main instrument unit control module. Trionic T7 sends continuous bus information SHIFT-UP, unit ON/OFF.

With SHIFT-UP on, the control module grounds the output for the lamp to turn it on.

After shifting up, Trionic T7 will change the status of the information to SHIFT-UP OFF and the lamp will go out.

Diagnostics

The function has its own diagnostics in the sending system.

Lights-on indicator lamp

An indicator lamp shows when the headlamps are switched on. The lamp is situated below the speedometer.

The indicator lamp is supplied with current from the lights switch on pin 9 (K20) of the main instrument unit and is grounded in the main instrument unit.

Diagnostics

The function has no diagnostics.

Indicator lamp, rear fog light

The indicator lamp for the rear fog light is situated in the upper right-hand corner and informs the driver when the rear fog light is switched on.

The lamp is supplied with current in the main instrument unit and grounded by the MIU's control module. DICE continuously sends bus information REAR FOG LIGHT, unit ON/OFF.

On receiving REAR FOG LIGHT ON, the control module grounds the output of the lamp which then lights up.

If DICE changes the status of the bus information to REAR FOG LIGHT OFF, the lamp goes out.

Diagnostics

The function has its own diagnostics in the sending system.

Main beam indicator lamp

The indicator lamp is situated in the upper left-hand corner and informs the driver that main beams are switched on.

The lamp is supplied with current from main beam fuse 8 on pin 15 (K20) of the main instrument unit and is grounded in the main instrument unit.

Diagnostics

The function has no diagnostics.

Selector lever position indicator

On cars with automatic transmission, the selector lever position indicator shows which gear is selected by lighting up the corresponding gear symbol.

The selector lever position indicator consists of 7 segments, each with an LED beside the corresponding symbol (PRND321). The symbols are illuminated by a lamp, the brightness of which is controlled by the rheostat value.

The LEDs and the lamp are powered from the main instrument unit and grounded by the main instrument unit control module. TCM sends continuous bus information on all the selector lever positions, unit ON/OFF.

	A	B	C	PA
P	ON	OFF	OFF	ON
R	ON	ON	OFF	OFF
N	OFF	ON	OFF	ON
D	OFF	ON	ON	OFF
3	ON	ON	ON	ON
2	ON	OFF	ON	OFF
1	OFF	OFF	ON	ON

Diagnostics

The function has its own diagnostics in the sending system.

Door indication

Door indication (on the pictogram) informs the driver if any of the doors or the tailgate is open. It consists of five red LEDs and a lamp. The doors and the tailgate each have an LED. The car is indicated in orange by a lamp.

The LEDs and the lamp are supplied with current in the main instrument unit and grounded by the main instrument unit control module.

TWICE continuously sends bus information on the status of the doors and tailgate, unit OPEN/CLOSED.

Example

When the driver's door is open and the other doors and tailgate are closed, the following information is sent:

Driver's door		Open
Passenger's door		Closed
Rear door LH		Closed
Rear door RH		Closed
Tailgate		Closed

The main instrument unit control module grounds the outputs of the symbols for the driver's door and the car, which then light up. The other LEDs remain off. The car symbol always lights up if a door or the tailgate is open.

Diagnostics

The function has no diagnostics.