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Mazda CX-5 Service & Repair Manual: Low Engine Coolant Temperature Indicator Light (Blue)/High Engine Coolant Temperature Warning Light (Red)

Mazda CX-5 Service & Repair Manual / Accessories / Storage / Low Engine Coolant Temperature Indicator Light (Blue)/High Engine Coolant Temperature Warning Light (Red)

Purpose

Low engine coolant temperature indicator light (blue)

High engine coolant temperature warning light (red)

Function

Low engine coolant temperature indicator light (blue)

High engine coolant temperature warning light (red)

Construction

Operation

Low engine coolant temperature indicator light (blue)

1. When the ignition is switched ON (while engine is running), the instrument cluster receives (1) the engine coolant temperature signal from the PCM via the CAN signal.

2. The instrument cluster turns the transistor on (2) based on the engine coolant temperature signal.

3. When the transistor turns on, the ground circuit of the low engine coolant temperature indicator light (blue) is established and the low engine coolant temperature indicator light (blue) illuminates (3).


High engine coolant temperature warning light (red)

1. When the ignition is switched ON (while engine is running), the instrument cluster receives (1) the engine coolant temperature signal from the PCM via the CAN signal.

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

3. The high engine coolant temperature warning light (red) flashes (3) when the transistor is turned on intermittently, and it illuminates (3) when the transistor is turned on continuously.


Fail-safe

Lights On Reminder Warning Alarm
Purpose The lights-on reminder warning alarm notifies the driver that the TNS and headlights are not turned off. Function The instrument cluster receives the following vehicle c ...

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 ...

Other materials:

Filament Inspection
1. Switch the ignition ON (engine off). 2. Turn the rear window defroster switch on. CAUTION: Directly touching the rear window defroster filament with the lead of the tester could damage it. Wrap aluminum foil around the end of the lead and inspect the filament by touching it ...

Air Bag System Warning Light [Two Step Deployment Control System]
Purpose The air bag system warning light notifies the driver of a malfunction in the SRS air bag system. Function If a malfunction occurs in the SRS air bag system, the air bag system warning light illuminates or flashes. Construction LEDs (light-emitting d ...

Steering Gear And Linkage Removal/Installation
CAUTION: Performing the following procedures without first removing the ABS wheel-speed sensor may possibly cause an open circuit in the wiring harness if it is pulled by mistake. Before performing the following procedures, disconnect the ABS wheel-speed sensor (axle side) and fix t ...

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