Mazda CX-5 Service & Repair Manual: Engine Control System

Mazda CX-5 Service & Repair Manual / Engine / Control / Engine Control System

Outline

L-jetronic*1 and D-jetronic*2 type detectors have been combined for intake air amount detection, improving the accuracy of the intake air amount measurement.

MAF sensor adopted
MAP sensor adopted
IAT sensor No.1 and No.2 adopted

Valve timing control has been adopted on both sides of the intake and exhaust, improving fuel economy and emission performance.

Intake side: Electric variable valve timing control

Intake CMP sensor adopted
Electric variable valve timing motor/driver adopted
Electric variable valve timing relay adopted

Exhaust side: Hydraulic variable valve timing control

Exhaust CMP sensor adopted

Engine oil control has been adopted reducing engine load.

Engine oil solenoid valve adopted

With the adoption of fuel pump control, fuel pump power consumption has been reduced, improving fuel economy.

Fuel pump control module adopted

With the adoption of the ion sensor, which detects pre-ignition, engine reliability has been improved.

*1 Measures the intake air amount directly using the MAF sensor.

*2 Measures the intake air pressure introduced into the cylinder using the MAP sensor and calculates the intake air amount indirectly.

Structural View

Input device

*1 U.S.A. and CANADA

Output device

*1 Fuel pump relay, starter relay, electric variable valve timing relay, fuel injector relay, main relay, A/C relay, cooling fan relay No.1, cooling fan relay No.2, cooling fan relay No.3

System Diagram

Input device

Output device

System Wiring Diagram

Block Diagram

*1 TCM (ATX), DSC HU/CM, instrument cluster, start stop unit

*2 Only used for OBD.

Relation Chart

Each control system and their related input and output parts are as follows.

?: Applicable


Item
Input device
APP sensor No.1, No.2		?	?		?			?	?		?	?
TP sensor No.1, No.2		?			?						?
MAF sensor		?	?	?	?		?	?	?	?		?			?
IAT sensor No.1		?		?	?			?	?			?		?
IAT sensor No.2		?		?	?			?
MAP sensor		?		?	?			?	?						?
CKP sensor		?	?	?	?	?	?	?	?	?	?	?	?	?	?
Intake CMP sensor		?		?	?			?
Exhaust CMP sensor		?	?		?		?	?
ECT sensor No.1		?	?	?	?		?	?	?	?	?	?	?	?	?
Fuel pressure sensor		?			?	?	?
BARO sensor		?		?	?	?			?			?
Ion sensor No.1—No.4				?	?
KS								?
A/F sensor					?				?
HO2S					?
Refrigerant pressure sensor											?	?
IG1 relay	?		?		?	?		?		?		?	?
Brake switch (No.1 signal)		?
Brake switch (No.2 signal)		?
Transaxle range sensor (ATX)		?			?								?
Neutral switch (MTX)		?			?			?			?
CPP switch (MTX)		?			?			?			?
Starter interlock switch (MTX)													?
Electric variable valve timing motor/driver				?
Battery			?			?	?	?	?					?
Generator (Stator coil)		?
CAN*		?			?			?			?	?	?
ECT sensor No.2	Only used for OBD.
Fuel tank pressure sensor	Only used for OBD.
Output device
Main relay	?
Throttle valve actuator		?
Electric variable valve timing motor/driver				?	?
Electric variable valve timing relay				?
OCV			?
Fuel injector No.1—No.4					?
Fuel injector relay					?
Fuel pump control module						?
Fuel pump relay						?
Spill valve control solenoid valve (High pressure fuel pump)							?
Ignition coil No.1—No.4								?
Purge solenoid valve									?
A/F sensor heater

Electronic Control System Outline [Fw6 A EL, Fw6 Ax EL]

Outline In the electronic control system, the TCM calculates the control content based on signals from each type of sensor and switch to operate output parts such as each solenoid. In con ...

Evaporative Emission (Evap) Control System

Purpose, Outline Prevents release of evaporative gas into the atmosphere. The intake manifold vacuum introduces evaporative gas to the intake manifold via the charcoal canister and t ...

Other materials:

Discharge Headlight Bulb
Purpose, Function Charges the internal metallic element and emits white light resembling sunlight. Construction A mercury-free bulb has been adopted for the discharge headlight bulb. The discharge headlight bulb is assembled to the front combination light. The dis ...

Fuel Injector
Purpose, Function Promotes atomization of fuel by injecting it from the multiple holes. Injects fuel according to the control signal from the PCM. Construction The fuel injector is installed to the cylinder head. The fuel injector has multiple injection hole ...

Operational Range
The system operates only when the driver is in the vehicle or within operational range while the key is being carried. NOTE When the battery power is low, or in places where there are high-intensity radio waves or noise, the operational range may become narrower or the system may not operate ...