Indicator and warning lamps (MIU 1)

Indicator and warning lamps (MIU 1)

Oil pressure warning lamp

The oil pressure warning lamp is situated in the top right-hand corner of the instrument display. This lamp warns the driver when the engine oil pressure is too low.

The lamp is supplied with current in the main instrument display panel. Should the oil pressure drop below 0.3-0.5 bar, the oil pressure sensor contacts will close and connect the lamp to ground via pin 9 (12p-2).

Charging indicator lamp

The charging indicator lamp is situated in the top right-hand corner of the instrument display. It tells the driver whether the battery is being charged or not.

The lamp is supplied with current in the main instrument display panel and connected to ground by the generator via pin 10 (12p-2) of the main instrument display panel connector.

If the generator does not rotate or charge the battery for any reason, the indicator lamp circuit will be grounded via the regulator through the generator's field winding, causing the lamp to light up.

When the generator is charging, generator terminals D+ and B+ will both have the same voltage. As a result, both terminals of the indicator lamp receive the same voltage and the lamp goes out.

Connected in parallel with the lamp is a resistor which ensures that the generator receives its magnetizing current when starting even if the lamp bulb is faulty.

A diode is connected in series with the resistor and the lamp. This diode prevents the lamp from lighting up when high charging currents are generated.

EXH warning lamp

A warning lamp for catalytic converter overheating is fitted on cars for certain markets. A voltage is applied to the EXH relay which operates when the temperature of the catalytic converter reaches 825 ± 25 ° C, causing the warning lamp to be grounded via pin 12 (12p-2) of the main instrument unit connector.

The lamp will then remain alight until the temperature drops by about 10 ° C. When the ignition is switched on the lamp is tested for about 3 seconds. If the temperature is within normal limits the lamp will go out.

Airbag (SRS) warning lamp

A lamp is situated behind the SRS symbol in the main instrument display panel.

Should the system develop a fault, the SRS lamp will start flashing. It will continue to flash for 5 minutes and then remain on without flashing.

The SRS lamp is supplied with current (+15 circuit) in the main instrument display panel, pin 11 (12p-1), and connected to ground by the airbag control module via pin 7 (12p-2) of the main instrument display panel connector.

Warning lamp, brake fluid level

The brake fluid warning lamp tells the driver when the level of the fluid in the reservoir is too low.

The lamp is supplied with current in the main instrument display panel.

The brake fluid level sensor will connect the lamp to ground via pin 3 (12p-2) if the level in the reservoir drops too low. When the ignition is switched on, the generator grounds the charging lamp and brake fluid warning lamp via a diode to check the operation of the systems.

Handbrake warning lamp

The handbrake warning lamp is situated in the right-hand part of the instrument display. This lamp lights up to tell the driver that the handbrake is on. The lamp is supplied with current in the main instrument display panel.

As long as the handbrake is applied the lamp will be connected to ground via pin 4 (12p-2), causing it to light up.

ABS warning lamp

The ABS control module monitors the operation of the anti-lock braking system and causes the ABS warning lamp to light up if a fault is detected. The ABS warning lamp is situated in the right-hand part of the main instrument display panel. When the ABS lamp lights up the anti-lock braking system is disabled and the brakes work just like a conventional braking system. The lamp is supplied with current in the main instrument display panel and connected to ground by the ABS control module via pin 11 (12p-2) of the main instrument display panel. When the ignition is switched on the lamp is tested for about 3 seconds. If no fault is detected the lamp will go out.

SPORT mode indicator lamp

On cars equipped with a TCM (Transmission Control Module), i.e. electronically controlled automatic transmission, the indicator lamp lights up when the SPORT button on the selector lever is pressed.

In SPORT mode, the transmission remains longer in each gear. The transmission stays in SPORT mode until the SPORT button is pressed once again, the ignition is switched off or WINTER mode is engaged.

The lamp is supplied with current in the main instrument display panel and connected to ground by the TCM control module via pin 5 (12p-1) of the main nstrument display panel.

When the ignition is switched on the lamp is tested for about 3 seconds. If no fault is detected the lamp will go out.

WINTER mode indicator lamp

To facilitate starting on slippery road surfaces, the TCM transmission has a WINTER mode, i.e. the car starts in 3rd gear when the WINTER button (snowflake) on the selector lever is pressed.

The WINTER mode will be disengaged by pressing the WINTER button once again, switching off the ignition, when in limp-home mode or if speed exceeds about 80 km/h.

The lamp is supplied with current in the main instrument display panel and connected to ground by the TCM control module via pin 6 (12p-1) of the main instrument display panel.

When the ignition is switched on the lamp is tested for about 3 seconds. If no fault is detected the lamp will go out.

CHECK GEARBOX warning lamp

If a fault develops in the automatic transmission, the CHECK GEARBOX warming lamp in the main instrument display panel will light up.

The lamp is supplied with current in the main instrument display panel and connected to ground by the TCM control module via pin 10 (12p-1) of the main instrument display panel.

When the ignition is switched on the lamp is tested for about 3 seconds. If no fault is detected the lamp will go out.

Low fuel indicator lamp

Information provided on page under "Fuel gauge".

CHECK ENGINE warning lamp (MIL)

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

The lamp is supplied with current in the main instrument display panel and connected to ground by the engine management system via pin 12 (12p-1).

When the ignition is switched on the lamp is tested for about 3 seconds. If no fault is detected the lamp will go out.

Direction indicator repeater lamps

The repeater lamps are located in the upper part of the main instrument display panel and supplied with current by the ICE unit via pins 1 (14p) and 14 (14p) of the main instrument display panel, in which they are also connected to ground.

The lamps are connected in parallel with the direction indicators on the appropriate side of the car.

CRUISE indicator lamp

The main instrument display panel incorporates a CRUISE indicator lamp which lights up when Cruise Control is engaged.

The lamp is supplied with current by the cruise control system control module via pin 7 (12p-1) of the main instrument display panel, in which it is also connected to ground.

The lamp will go out, however, in TIP mode to acknowledge that TIP mode has been engaged.

The CRUISE indicator lamp is also used in diagnostics mode to provide information about the system.

Lights-on indicator lamp

Cars for some markets are fitted with an indicator lamp which shows when the headlamps are switched on.

The indicator lamp is supplied with current by the lights switch via pin 1 (12p-1) of the main instrument display panel, in which it is also connected to ground.

Indicator lamp, rear fog light

The indicator lamp for the rear fog light is situated in the left-hand part of the main instrument display panel and tells the driver that the rear fog light is switched on.

The indicator lamp is supplied with current via pin 12 (14p) and connected to ground in the main instrument display panel.

Main beam indicator lamp

The indicator lamp is situated in the left-hand part of the main instrument display panel and tells the driver when the main beams are switched on.

The lamp is supplied with current from main beam fuse 3 via pin 13 (14p) of the main instrument display panel, in which it is also connected to ground.

"Faulty bulb" indicator lamp

If a rear lamp fails the ICE unit sends a message to the SID unit which grounds the "FAULTY BULB" indicator lamp in the main instrument display panel via pin 3 (12p-1).

If a bulb at the front is faulty, the filament monitor grounds the indicator lamp in the main instrument display panel via the SID unit.

The lamp is supplied with current in the main instrument display panel.

"Door Open" indicator lamp

The indicator lamp is supplied with current in the main instrument display panel and the ICE unit grounds it via pin 11 (14p) of the main instrument display panel on receiving information that a door is open.

Connected in series with the indicator lamp is a diode which prevents the lamp from lighting up incorrectly.

Low washer fluid indicator lamp

The low washer fluid lamp lights up when there is less than 1.4 litres of fluid remaining in the reservoir.

The level switch in the fluid reservoir is connected to the SID unit. When the fluid drops below the limit, the SID unit connects the indicator lamp to ground via pin 2 (12p-1) of the main instrument unit.