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 Gauge Sender Unit Inspection [Awd]
Fuel gauge sender unit (main) 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 (main) terminals D a ...

Mass Air Flow (MAF) Sensor/Intake Air Temperature (Iat) Sensor No.1 Removal/Installation
NOTE: Because the IAT sensor No.1 is integrated in the MAF sensor, replacing the IAT sensor No.1 includes replacement of the MAF sensor/IAT sensor No.1. 1. Disconnect the negative battery cable.. 2. Disconnect the MAF sensor/IAT sensor No.1 connector. 3. Remove the MAF sensor/IA ...

Limitations to SRS Air Bag
In severe collisions such as those described previously in “SRS Air Bag Deployment Criteria”, the applicable SRS air bag equipment will deploy. However, in some accidents, the equipment may not deploy depending on the type of collision and its severity. Limitations to front/near front colli ...