Mazda CX-5 Service & Repair Manual: Fuel Pump Relay
Purpose, Function
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Controls the fuel pump on/off according to control signals from the PCM.
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The fuel pump is operated only at engine start or when the engine is running to improve safety.
Construction
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The fuel pump relay is installed in the relay and fuse block.
Operation
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The contact point is on when the battery voltage is supplied to the coil based on the signal from the PCM, and the battery voltage is supplied to the fuel pump control module.
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For the fuel pump control, refer to CONTROL SYSTEM..
Fail-safe
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Function not equipped.
Fuel Pressure Sensor
Purpose/Function
Detects the fuel pressure in the fuel distributor as basic information for
mainly determining the fuel injection amount.
Detects the fuel pressure in the fuel distri ...
Fuel Tank Pressure Sensor Inspection
Voltage Inspection
NOTE:
The fuel tank pressure sensor cannot be removed as a single unit. When replacing
the fuel tank pressure sensor, replace it together with the charcoal canister
a ...
Other materials:
Climate Control Unit [Manual Air Conditioner]
Purpose
The climate control unit performs air conditioning according to the operation
by the users and the driving conditions of the vehicle.
Function
The climate control unit determines optimum air-conditioning based on the
input signals from each sensor and the control mo ...
Discharge Headlight Control Module
Purpose
Converts DC voltage from the battery to AC voltage and outputs the stabilized
voltage to the discharge headlight.
Function
The discharge headlight control module controls the voltage from the battery
to illuminate the discharge headlight.
The discharge headl ...
Reduction Gear
Purpose/ Function
The reduction gear transmits the rotation input from the EPS motor, decreasing
the rotation speed and increasing the torque simultaneously.
Construction
The reduction gear consists of the worm wheel located on the steering column
main shaft and the worm sh ...
