Home ReviewsRefund
Home/Mazda/CX-5/Mazda CX-5 I (2011-2015)/Repair manual/Testing & Diagnostics/Engine - Control System: Removal & Installation
Contents Wiring diagrams Section: Testing & Diagnostics All sections

Engine - Control System: Removal & Installation Mazda CX-5 I

Testing & Diagnostics 29 illustrations ~1702 words

PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0]

CAUTIONThere are two types of PCM settings. If the incorrect PCM is installed, it could cause interference with engine control. When replacing the PCM, verify the first four digits of the part number indicated on the PCM label before replacement, and replace the PCM with one having the same part number.

Scheme 32

Scheme 32
Scheme 32

Scheme 33

Scheme 33
Scheme 33

Scheme 34

Scheme 34
Scheme 34

Scheme 35

Scheme 35
Scheme 35

Scheme 36

Scheme 36
Scheme 36
  1. Disconnect the negative battery cable. (See «NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0]»(ref-615412-S04991947062014051000000) ). (Scheme 32): Identifying Sample Label Four Digit Code
  2. Remove the PCM cover. (See «PCM COVER INSTALLATION NOTE»(ref-615396-S41464673232014051000000) ). (Scheme 33): PCM Cover & Mounting Bolts With Torque Specifications
  3. Disconnect the PCM connector. (See «PCM CONNECTOR CONNECTION NOTE»(ref-615396-S23153688582014051000000) ). (Scheme 34): Removing PCM Connector
  4. Remove the PCM assembly from the battery tray. (Scheme 35): Removing PCM Assembly From Battery Tray With Torque Specifications
  5. Remove the PCM from the PCM bracket.
  6. Install in the reverse order of removal.
  7. When replacing the PCM on the vehicles, perform the following: PCM configuration (See «PCM CONFIGURATION (USING READ/WRITE FUNCTION) [SKYACTIV-G 2.0]»(ref-615396-S33623172442014051000000) ). NOTE: If configuration cannot be performed by reading/writing of the vehicle specification information, perform the configuration using As-Built information after replacing the PCM. (See «PCM CONFIGURATION (USING AS-BUILT DATA) [SKYACTIV-G 2.0]»(ref-615396-S04012573182014051000000) ). Immobilizer system-related parts programming (See «IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING»(ref-615426-S37328444402014051000000) ). (Scheme 36): Removing PCM From PCM Bracket With Torque Specifications

Scheme 37

Scheme 37: PCM Cover Installation Note
Scheme 37: PCM Cover Installation Note
  1. Insert the PCM cover end into area A shown in the figure.
  2. Temporarily tighten the two bolts, then completely tighten them. (Scheme 37): Identifying PCM Cover Installation Area

ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]

WARNINGWhen the engine is hot, it can badly burn. Turn off the engine and wait until it is cool before removing the ECT sensor.

Scheme 38

Scheme 38: ECT Sensor No.1
Scheme 38: ECT Sensor No.1

Scheme 39

Scheme 39
Scheme 39

Scheme 40

Scheme 40
Scheme 40

Scheme 41

Scheme 41
Scheme 41
  1. Disconnect the negative battery cable. (See «NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0]»(ref-615412-S04991947062014051000000) ).
  2. Remove the plug hole plate. (See «PLUG HOLE PLATE REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-615399-S02010689542014051000000) ).
  3. Drain the engine coolant. (See «ENGINE COOLANT REPLACEMENT [SKYACTIV-G 2.0]»(ref-615406-S03293741932014051000000) ).
  4. Pull out the evaporative hose No.1 from the catch tank and set it aside. (Scheme 38): Removing Evaporative Hose No.1 From Catch Tank
  5. Pull out the ventilation hose from the air hose and set it aside. (Scheme 39): Removing Ventilation Hose From Air Hose
  6. Remove the clip and loosen the wiring harness. (Scheme 40): Removing Clip
  7. Disconnect the ECT sensor No.1 connector.
  8. Remove the ECT sensor No.1 using the SST.
  9. Install in the reverse order of removal.
  10. Refill the engine coolant. (See «ENGINE COOLANT REPLACEMENT [SKYACTIV-G 2.0]»(ref-615406-S03293741932014051000000) ). (Scheme 41): Removing ECT Sensor No.1 Using SST With Torque Specifications

Scheme 42

Scheme 42: ECT Sensor No.2
Scheme 42: ECT Sensor No.2
  1. Disconnect the negative battery cable. (See «NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0]»(ref-615412-S04991947062014051000000) ).
  2. Drain the engine coolant. (See «ENGINE COOLANT REPLACEMENT [SKYACTIV-G 2.0]»(ref-615406-S03293741932014051000000) ).
  3. Lift up the bracket.
  4. Disconnect the ECT sensor No.2 connector.
  5. Remove the ECT sensor No.2 from the water pipe.
  6. Install in the reverse order of removal.
  7. Refill the engine coolant. (See «ENGINE COOLANT REPLACEMENT [SKYACTIV-G 2.0]»(ref-615406-S03293741932014051000000) ). (Scheme 42): Removing ECT Sensor No.2 From Water Pipe With Torque Specifications

MASS AIR FLOW (MAF) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO.1 REMOVAL/INSTALLATION [SKYACTIV-G 2.0]

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.

Scheme 43

Scheme 43: MASS AIR FLOW (MAF) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO.1 REMOVAL/INSTALLATION [SKYACTIV-G
Scheme 43: MASS AIR FLOW (MAF) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO.1 REMOVAL/INSTALLATION [SKYACTIV-G
  1. Disconnect the negative battery cable. (See «NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0]»(ref-615412-S04991947062014051000000) ).
  2. Disconnect the MAF sensor/IAT sensor No.1 connector.
  3. Remove the MAF sensor/IAT sensor No.1.
  4. Install in the reverse order of removal. (Scheme 43): Removing MAF Sensor/IAT Sensor No.1

MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO.2 REMOVAL/INSTALLATION [SKYACTIV-G 2.0]

Note. Because the IAT sensor No.2 is integrated in the MAP sensor, replacing the IAT sensor No.2 includes replacement of the MAP sensor/IAT sensor No.2.

Scheme 44

Scheme 44: MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO.2 REMOVAL/INSTALLATIO
Scheme 44: MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO.2 REMOVAL/INSTALLATIO
  1. Disconnect the negative battery cable. (See «NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0]»(ref-615412-S04991947062014051000000) ).
  2. Disconnect the MAP sensor/IAT sensor No.2 connector.
  3. Remove the MAP sensor/IAT sensor No.2.
  4. Install in the reverse order of removal. (Scheme 44): Removing MAP Sensor/IAT Sensor No.2

BAROMETRIC PRESSURE (BARO) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]

Note. Because the BARO sensor is integrated in the PCM, replacing the BARO sensor includes replacement of the PCM.

  1. Remove the PCM. (See «PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-615396-S25485803652014051000000) ).

THROTTLE POSITION (TP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]

Note. The TP sensor cannot be removed as a single unit. When replacing the TP sensor, replace it together with the throttle body as a single unit.

  1. Remove the throttle body. (See «INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-615404-S24638618012014051000000) ).

ACCELERATOR PEDAL POSITION (APP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]

Note. Because the APP sensor is integrated in the accelerator pedal, replacing the APP sensor includes replacement of the accelerator pedal.

  1. Remove the accelerator pedal. (See «ACCELERATOR PEDAL REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-615404-S33394844082014051000000) ).

FUEL PRESSURE SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]

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 unit.

  1. Remove the fuel distributor. (See «FUEL INJECTOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-615403-S20135446312014051000000) ).

AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]

WARNINGA hot engine and exhaust system can cause severe burns. Turn off the engine and wait until they are cool before removing the exhaust system.
CAUTIONDo not allow flammable objects such as the taping for bundling wiring harness to come into contact with the exhaust manifold and silencer.

Note. If penetrant lubricating spray penetrates the airflow hole of the A/F sensor, it could cause interference with the A/F sensor function. When removing the A/F sensor, wrap a rag around the lower position so that penetrant lubricating spray does not get sprayed into the airflow hole.

Identifying A/F Ratio Sensor. Scheme 45

Scheme 45: Identifying A/F Ratio Sensor
Scheme 45: Identifying A/F Ratio Sensor

Removing A/F Ratio Connector. Scheme 46

Scheme 46: Removing A/F Ratio Connector
Scheme 46: Removing A/F Ratio Connector

Scheme 47

Scheme 47
Scheme 47

Scheme 48

Scheme 48
Scheme 48

Scheme 49

Scheme 49
Scheme 49
  1. Disconnect the negative battery cable. (See «NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0]»(ref-615412-S04991947062014051000000) ).
  2. Remove the plug hole plate. (See «PLUG HOLE PLATE REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-615399-S02010689542014051000000) ).
  3. Disconnect the A/F sensor connector.
  4. Remove the clip from the heat insulator. (Scheme 47): Identifying Heat Insulator Clip
  5. Remove the wiring harness from the wire clip A and B. (See «ASSEMBLY OF WIRING HARNESS TO WIRE CLIP NOTE»(ref-615396-S15689851202014051000000) ). (Scheme 48): Removing Wiring Harness From Wire Clip
  6. Remove the A/F sensor using the SST.
  7. Install in the reverse order of removal. (Scheme 49): Removing A/F Sensor Using SST With Torque Specifications

Scheme 50

Scheme 50: Assembly of Wiring Harness to Wire Clip Note
Scheme 50: Assembly of Wiring Harness to Wire Clip Note

Scheme 51

Scheme 51
Scheme 51
  1. Secure the heat shrinkable tube on the wiring harness to wire clip A. (Scheme 50): Identifying Heat Shrinkable Tube, Wiring Harness And Wire Clip
  2. Secure the band on the wiring harness so that the band is positioned on both sides of wire clip B. (Scheme 51): Identifying Band, Wiring Harness And Wire Clip

Scheme 52

Scheme 52: A/F Sensor Inspection
Scheme 52: A/F Sensor Inspection
  1. Connect the M-MDS to the DLC-2.
  2. Switch the ignition ON (engine on).
  3. Warm up the engine to normal operating temperature.
  4. Access the following PIDs using the M-MDS. (See «ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0]»(ref-615394-S17351994472014051000000) ). VSS (Vehicle speed) RPM (Engine speed) O2S11 (A/F sensor output current)
  5. Drive the vehicle and decelerate the engine speed by releasing the accelerator pedal fully when the engine speed is 3,000 rpm or more.
  6. Verify that the A/F sensor output current (PID: O2S11) is 0.25 mA or more while decelerating as shown in the figure. If not as specified, replace the A/F sensor. (See «AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-615396-S40617240402014051000000) ). (Scheme 52): A/F Ratio Sensor Characteristic Graph

HEATED OXYGEN SENSOR (HO2S) REMOVAL/INSTALLATION [SKYACTIV-G 2.0]

WARNINGA hot engine and exhaust system can cause severe burns. Turn off the engine and wait until they are cool before removing the exhaust system.
CAUTIONDo not allow flammable objects such as the taping for bundling wiring harness to come into contact with the exhaust manifold and silencer.

Note. If penetrant lubricating spray penetrates the airflow hole of the HO2S, it could cause interference with the HO2S function. When removing the HO2S, wrap a rag around the lower position so that penetrant lubricating spray does not get sprayed into the airflow hole.

Identifying Heated Oxygen Sensor And Wrap Rag. Scheme 53

Scheme 53: Identifying Heated Oxygen Sensor And Wrap Rag
Scheme 53: Identifying Heated Oxygen Sensor And Wrap Rag

Scheme 54

Scheme 54
Scheme 54

Scheme 55

Scheme 55
Scheme 55

Scheme 56

Scheme 56
Scheme 56
  1. Disconnect the negative battery cable. (See «NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0]»(ref-615412-S04991947062014051000000) ).
  2. Lift up the vehicle.
  3. Remove the floor under cover, (vehicles with floor under cover) (See «FLOOR UNDER COVER REMOVAL/INSTALLATION»(ref-615433-S42552617052014051000000) ).
  4. Remove the insulator and brace bar. (2WD) (See «EXHAUST SYSTEM REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-615409-S05941657582014051000000) ).
  5. Disconnect the HO2S connector. (Scheme 54): Removing Heated Oxygen Sensor Connector
  6. Remove the clip A from the bracket.
  7. Remove the clip B. (Scheme 55): Identifying Heated Oxygen Sensor Clip With Torque Specifications (2WD And 4WD)
  8. Remove the HO2S using the SST.
  9. Install in the reverse order of removal. (Scheme 56): Removing Heated Oxygen Sensor Using SST With Torque Specifications

Scheme 57

Scheme 57: HO2S Inspection
Scheme 57: HO2S Inspection
  1. Connect the M-MDS to the DLC-2.
  2. Switch the ignition ON (engine on).
  3. Warm up the engine to normal operating temperature.
  4. Access the following PIDs using the M-MDS. (See «ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0]»(ref-615394-S17351994472014051000000) ). VSS (Vehicle speed) RPM (Engine speed) O2S12 (HO2S output voltage)
  5. Drive the vehicle and decelerate the engine speed by releasing the accelerator pedal fully when the engine speed is 3,000 rpm or more.
  6. Verify that the HO2S output voltage (PID: O2S12) is 0.3 V or less while decelerating as shown in the figure. If not as specified, replace the HO2S. (See «HEATED OXYGEN SENSOR (HO2S) REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-615396-S14862510252014051000000) ). (Scheme 57): Heated Oxygen Sensor Characteristic Graph

CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]

CAUTIONWhen foreign material such as an iron chip is on the CKP sensor, it can cause abnormal output from the sensor because of flux turbulence and adversely affect the engine control. Be sure there is no foreign material on the CKP sensor when replacing. Do not assemble the CKP sensor or change the installation position using any method other than the following. Otherwise, it could negatively affect engine controls, such as the ignition timing and fuel injection.

Scheme 58

Scheme 58
Scheme 58
  1. Disconnect the negative battery cable. (See «NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0]»(ref-615412-S04991947062014051000000) ).
  2. Lift up the vehicle.
  3. Perform the following procedure for easier access. Remove the service hole cover (installed to front under cover No.2) used to remove the oil filter. (See «OIL FILTER REPLACEMENT [SKYACTIV-G 2.0]»(ref-615400-S21847593872014051000000) ). Remove the front splash shield (RH). (See «SPLASH SHIELD REMOVAL/INSTALLATION»(ref-615433-S30142483462014051000000) ).
  4. Disconnect the CKP sensor connector.
  5. Remove the CKP sensor.
  6. Install in the reverse order of removal. (Scheme 58): Removing CKP Sensor With Torque Specifications

CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]

CAUTIONWhen replacing the CMP sensor, make sure there is no foreign material on it such as metal shavings. If it is installed with foreign material, the sensor output signal will malfunction resulting from fluctuation in magnetic flux and cause a deterioration in engine control.

Scheme 59

Scheme 59: Intake CMP Sensor
Scheme 59: Intake CMP Sensor
  1. Disconnect the negative battery cable. (See «NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0]»(ref-615412-S04991947062014051000000) ).
  2. Remove the plug hole plate. (See «PLUG HOLE PLATE REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-615399-S02010689542014051000000) ).
  3. Remove the intake manifold. (See «INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-615404-S24638618012014051000000) ).
  4. Disconnect the intake CMP sensor connector.
  5. Remove the intake CMP sensor.
  6. Install in the reverse order of removal. (Scheme 59): Removing Intake CMP Sensor With Torque Specifications

Scheme 60

Scheme 60: Exhaust CMP Sensor
Scheme 60: Exhaust CMP Sensor
  1. Disconnect the negative battery cable. (See «NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0]»(ref-615412-S04991947062014051000000) ).
  2. Remove the plug hole plate. (See «PLUG HOLE PLATE REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-615399-S02010689542014051000000) ).
  3. Disconnect the exhaust CMP sensor connector.
  4. Remove the exhaust CMP sensor.
  5. Install in the reverse order of removal. (Scheme 60): Removing Exhaust CMP Sensor With Torque Specifications

FUEL TANK PRESSURE SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]

Note. The fuel tank pressure sensor cannot be removed as a single unit. When replacing the fuel tank pressure sensor, replace it together with the charcoal canister as a single unit.

  1. Remove the charcoal canister. (See «CHARCOAL CANISTER REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-615405-S04934227332014051000000) ).

ION SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]

Note. Because the ion sensor is integrated in the ignition coil, replacing the ion sensor includes replacement of the ignition coil/ion sensor.

  1. Remove the ignition coil/ion sensor. (See «IGNITION COIL/ION SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0]»(ref-615408-S22625302992014051000000) ).

More articles — Engine - Control System