2021 Mazda CX-3 AWDFACTORY OEM SERVICE PROCEDURE

Except Engine Compartment (With Coolant Control Valve)

G13149706Courtesy of MAZDA MOTORS CORP.
COMPONENT DESCRIPTION

1 Fuel tank pressure sensor
(See FUEL TANK PRESSURE SENSOR REMOVAL/INSTALLATION .)
(See FUEL TANK PRESSURE SENSOR INSPECTION .)
2 Clutch stroke sensor (MTX) (lf equipped)
(See CLUTCH STROKE SENSOR INSPECTION .)
3 CPP switch (MTX)
(See CLUTCH PEDAL POSITION (CPP) SWITCH INSPECTION .)
4 APP sensor
(See ACCELERATOR PEDAL POSITION (APP) SENSOR REMOVAL/INSTALLATION .)
(See ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION .)
5 A/F sensor
(See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION .)
(See AIR FUEL RATIO (A/F) SENSOR INSPECTION .)
6 ECT sensor No. 2
(See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION .)
(See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION .)
7 Exhaust CMP sensor
(See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION .)
(See CAMSHAFT POSITION (CMP) SENSOR INSPECTION .)
8 Engine oil temperature sensor/Engine oil pressure sensor
(See ENGINE OIL TEMPERATURE SENSOR/ENGINE OIL PRESSURE SENSOR REMOVAL/INSTALLATION .)
(See ENGINE OIL TEMPERATURE SENSOR INSPECTION .)
(See ENGINE OIL PRESSURE SENSOR INSPECTION .)
9 ECT sensor No. 1
(See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION .)
(See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION .)
10 CKP sensor
(See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION .)
(See CRANKSHAFT POSITION (CKP) SENSOR INSPECTION .)
11 HO2S
(See HEATED OXYGEN SENSOR (HO2S) REMOVAL/INSTALLATION .)
(See HEATED OXYGEN SENSOR (HO2S) INSPECTION .)
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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