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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Item |
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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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