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Mazda CX-5 Service & Repair Manual: PCM Removal/Installation

Mazda CX-5 Service & Repair Manual / Engine / Control / PCM Removal/Installation

CAUTION:

1. Disconnect the negative battery cable..

2. Remove the PCM cover..


3. Disconnect the PCM connector..


4. Remove the PCM assembly from the battery tray.


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 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.

PCM Connector Connection Note

CAUTION:

1. Set the PCM connector to the position shown in the figure.


2. Align the PCM connector straight against the connection surface.


3. Insert the PCM connector straight and press it in until the lever moves up naturally. (Front harness-side connector)


4. Press the PCM connector lever until a click sound is heard.


PCM Inspection
Without Using the M-MDS NOTE: Because the PCM uses a waterproof connector, the inspection for the voltage/wave pattern cannot be performed. The following values are for reference. Te ...

PCM
Purpose/Function High-level driveability and lower fuel consumption have been realized by controlling the appropriate engine conditions (fuel injection/ignition timing) according to opera ...

Other materials:

Engine Coolant Temperature (ECT) Sensor
Purpose/Function Detects the ECT as basic information for mainly determining the fuel injection amount. Detects the ECT and inputs it to the PCM as an ECT signal. The ECT sensor No.2 is only used for OBD. Construction ECT sensor No.1 Installed to the water out ...

Drive By Wire Control
Outline Calculates the optimum target throttle valve opening angle at all engine speeds and controls the throttle valve actuator. The drive-by-wire control is composed of the idle air control, accelerator control, traction control, excess engine speed control, overspeed control, ...

Electrical Fan Control
Outline Through cooling of the radiator and condenser by operation of the cooling fan according to vehicle conditions, engine reliability and cooling performance have been improved. Block Diagram Operation The PCM determines the demand airflow volume by the following c ...

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