Mazda CX-5 Service & Repair Manual: Engine Control System
Outline
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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.
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MAF sensor adopted
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MAP sensor adopted
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IAT sensor No.1 and No.2 adopted
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Valve timing control has been adopted on both sides of the intake and exhaust, improving fuel economy and emission performance.
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Intake CMP sensor adopted
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Electric variable valve timing motor/driver adopted
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Electric variable valve timing relay adopted
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Exhaust CMP sensor adopted
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Intake side: Electric variable valve timing control
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Exhaust side: Hydraulic variable valve timing control
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Engine oil control has been adopted reducing engine load.
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Engine oil solenoid valve adopted
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With the adoption of fuel pump control, fuel pump power consumption has been reduced, improving fuel economy.
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Fuel pump control module adopted
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With the adoption of the ion sensor, which detects pre-ignition, engine reliability has been improved.
*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
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Each control system and their related input and output parts are as follows.
?: Applicable
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Input device |
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APP sensor No.1, No.2 |
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TP sensor No.1, No.2 |
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MAF sensor |
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IAT sensor No.1 |
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IAT sensor No.2 |
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MAP sensor |
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CKP sensor |
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Intake CMP sensor |
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Exhaust CMP sensor |
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ECT sensor No.1 |
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Fuel pressure sensor |
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BARO sensor |
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Ion sensor No.1—No.4 |
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KS |
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A/F sensor |
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HO2S |
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Refrigerant pressure sensor |
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IG1 relay |
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Brake switch (No.1 signal) |
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Brake switch (No.2 signal) |
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Transaxle range sensor (ATX) |
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Neutral switch (MTX) |
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CPP switch (MTX) |
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Starter interlock switch (MTX) |
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Electric variable valve timing motor/driver |
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Battery |
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Generator (Stator coil) |
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CAN* |
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ECT sensor No.2 |
Only used for OBD. |
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Fuel tank pressure sensor |
Only used for OBD. |
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Output device |
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Main relay |
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Throttle valve actuator |
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Electric variable valve timing motor/driver |
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Electric variable valve timing relay |
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OCV |
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Fuel injector No.1—No.4 |
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Fuel injector relay |
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Fuel pump control module |
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Fuel pump relay |
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Spill valve control solenoid valve (High pressure fuel pump) |
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Ignition coil No.1—No.4 |
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Purge solenoid valve |
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A/F sensor heater |
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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:
Knock Sensor (Ks) Removal/Installation
1. Disconnect the negative battery cable..
2. Remove the plug hole plate..
3. Remove the intake manifold..
4. Disconnect the KS connector.
5. Remove the KS..
6. Install in the reverse order of removal.
KS Installation Note
Verify that there is no foreign matter caught between ...
Sunroof Switch Inspection
1. Disconnect the negative battery cable..
2. Remove the front map light..
3. Verify that the continuity between the sunroof switch terminals is as indicated
in the table.
If not as indicated in the table, replace the sunroof switch.
...
Fuel Distributor
Purpose, Function
Distributes fuel pumped from the high pressure fuel pump to each fuel injector.
Construction
The fuel distributor is installed to the cylinder head.
The fuel distributor is integrated with the fuel pressure sensor.
...
