Mazda CX-5 Service & Repair Manual: Fuel Pressure Sensor

Mazda CX-5 Service & Repair Manual / Engine / Fuel / 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 distributor and inputs it to the PCM as a fuel pressure signal.

Construction

Installed on the fuel distributor.
A metal diaphragm thin film distortion gauge has been adopted as the detecting element for detecting the fuel pressure.

Operation

Inputs the signal, which fluctuates according to the fuel pressure, to the PCM.

Fuel pressure sensor characteristic

Fail-safe


DTC No.	Fail-safe function
P0191:00	Stops the high pressure fuel pump control. Limits the intake air amount.
P0192:00	Stops the high pressure fuel pump control. Limits the intake air amount.
P0193:00	Stops the high pressure fuel pump control. Limits the intake air amount.

Fuel Pressure Sensor Inspection

Voltage Inspection NOTE: The fuel pressure sensor cannot be removed as a single unit. When replacing the fuel pressure sensor, replace it together with the fuel distributor as a single ...

Fuel Pump Relay

Purpose, Function Controls the fuel pump on/off according to control signals from the PCM. The fuel pump is operated only at engine start or when the engine is running to improve saf ...

Other materials:

Fuel Filler Cap Inspection
Leakage Inspection 1. Perform the following tester (evaporative emission system tester (134-01049A)) self-test: NOTE: If the tester does not work correctly during self-test, refer to the tester operators manual for more detailed procedures. a. Verify that the gas cylinder valve ...

Essential Information
Introduction Be extremely careful and prevent injury to yourself and others or damage to your vehicle when using this manual for inspection and maintenance. If you are unsure about any procedure it describes, we strongly urge you to have a reliable and qualified service shop perform the work ...

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 CAN signals, and if a remaining fuel amount of approx. 10 L {2.6 US gal, 2.2 Imp gal} (fuel gauge ...