Mazda CX-5 Service & Repair Manual: Master Warning Light

Mazda CX-5 Service & Repair Manual / Accessories / Storage / Master Warning Light

Purpose

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

Brake switch malfunction
Engine oil solenoid valve malfunction
Automatic configuration malfunction

Function

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, and automatic configuration error signal sent from the PCM

The instrument cluster flashes the master warning light based on the master warning light flash request signal sent from the PCM as a CAN signal.
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.
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.
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.

Fail-safe

Function not equipped.

Low Fuel Warning Light

Purpose The low fuel warning light warns the driver that the remaining fuel level is low. Function The instrument cluster calculates the fuel quantity based on the following ...

Panel Light Control Indicator Alarm

Purpose The panel light control indicator alarm notifies the driver that the panel light brightness is either at maximum or minimum. Function If the panel light control switch i ...

Other materials:

Engine Oil Control
Outline The PCM reduces the oil pump load applied to the engine by controlling the appropriate engine hydraulic pressure according to the engine operation conditions. The engine hydraulic pressure switches in two steps. When hydraulic pressure is not needed, the oil pump dischar ...

Fuel Gauge Sender Unit Inspection [2 Wd]
NOTE: For the fuel gauge sender unit removal/installation, refer to the fuel pump removal/installation because the fuel gauge sender unit is integrated with the fuel pump.. 1. Verify that the resistance at fuel gauge sender unit terminals D and C is as indicated in the table ac ...

Shift Solenoid No.4 [Fw6 A EL, Fw6 Ax EL]
Purpose/Function Shift solenoid No.4 adjusts the hydraulic pressure in the high clutch circuit and the low and reverse brake circuit based on the current demand from the TCM according to the vehicle conditions. Construction Shift solenoid No.4 is installed to the solenoid c ...