MASTER WARNING LIGHT

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2014 - Mazda6 - Body and Accessories

MASTER WARNING LIGHT

Purpose

Type A instrument cluster

The master warning light warns the driver that the instrument cluster has received a message from a related unit.

Type B instrument cluster

The master warning light warns the driver that any of the following malfunctions is occurring.

Brake switch malfunction

Engine oil solenoid valve malfunction

Global central configuration malfunction

Function

Type A instrument cluster

When the instrument cluster receives a message request signal from the related unit, the master warning light illuminates.

The master warning light illuminates and the displayed messages in the LCD are as follows:


LCD	Related unit	Reference/function
	PCM	(See ENGINE OIL PRESSURE WARNING LIGHT.)
	PCM (Global central configuration error or active air shutter system malfunction)	(See ON-BOARD DIAGNOSTIC SYSTEM TEST MODE [SKYACTIV-G 2.5].) (See ACTIVE AIR SHUTTER CONTROL.)
	PCM	(See DRIVE-BY-WIRE CONTROL [SKYACTIV-G 2.5].)
	PCM	(See CHARGING SYSTEM WARNING LIGHT [SKYACTIV-G 2.5].) (See i-ELOOP [i-ELOOP].)
	PCM	(See GENERATOR CONTROL [SKYACTIV-G 2.5].)
	PCM	(See i-ELOOP [i-ELOOP].)
	PCM	(See CHECK FUEL CAP WARNING LIGHT [SKYACTIV-G 2.5].)
	EPS CM	(See POWER STEERING MALFUNCTION INDICATOR LIGHT.)
	Laser sensor	(See SMART CITY BRAKE SUPPORT (SCBS).)
	TCM	(See AUTOMATIC TRANSAXLE WARNING LIGHT [FW6A-EL].)
	Start stop unit (Keyless entry system/advanced keyless entry system)	(See KEYLESS ENTRY SYSTEM.) (See ADVANCED KEYLESS ENTRY SYSTEM.)
	Vehicle control module (V/C-Module) (forward obstruction warning (FOW) system)	(See FORWARD OBSTRUCTION WARNING (FOW) SYSTEM.)

If the cancel procedure for preventing unnecessary operation of the brake override system is implemented, the PCM sends a master warning light flash request signal to the instrument cluster as a CAN signal. The instrument cluster flashes the master warning light based on the master warning light flash request signal sent from the PCM. For the cancel procedure to prevent unnecessary operation of the brake override system, refer to the DRIVE-BY-WIRE CONTROL [SKYACTIV-G 2.5].

The master warning light flashing pattern is as indicated in the figure.

Type B instrument cluster

The instrument cluster illuminates the master warning light based on the following CAN signals:

Brake switch No.1 error signal, brake switch No.2 error signal, engine oil solenoid valve error signal, current sensor error signal, power supply system error signal, and global central configuration error signal, sent from the PCM

NOTE:

There are warning lights which are illuminated/flashed simultaneously when the master warning light is illuminated. For the warning lights which are illuminated/flashed simultaneously when the master warning light is illuminated, refer to the ON-BOARD DIAGNOSTIC SYSTEM TEST MODE [SKYACTIV-G 2.5].

If the cancel procedure for preventing unnecessary operation of the brake override system is implemented, the PCM sends a master warning light flash request signal to the instrument cluster as a CAN signal. The instrument cluster flashes the master warning light based on the master warning light flash request signal sent from the PCM. For the cancel procedure to prevent unnecessary operation of the brake override system, refer to the DRIVE-BY-WIRE CONTROL [SKYACTIV-G 2.5].

The master warning light flashing pattern is as indicated in the figure.

Construction

The instrument cluster microcomputer controls the illumination/flashing/turning off of the master warning light based on each error signal sent from the PCM or a message request signal (Type A only) from the related system.

The master warning light is set in the instrument cluster.

Operation

When the ignition is switched ON (engine off or on), the instrument cluster receives (1) each error signal or a master warning light flash request signal from the PCM, or a message request signal (Type A only) from the related unit.

The instrument cluster turns the transistor on (2) intermittently for flashing and continuously for illumination based on each signal.

The master warning light flashes (3) when the transistor is turned on intermittently, and it illuminates (3) when the transistor is turned on continuously.

Type A instrument cluster

Type B instrument cluster

Fail-safe

Function not equipped.

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