Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMAZDA20132 TOURING, 1.5L ENG VIN Z, AUTOMATIC TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMSYMPTOM TROUBLESHOOTING [ENGINE CONTROL SYSTEM MZR 1.5]ENGINE CONTROL SYSTEM OPERATION INSPECTIONVARIABLE VALVE TIMING CONTROL SYSTEM OPERATION INSPECTIONWHEN IDLING CAN BE CONTINUED
2013 Mazda 2 Touring, 1.5L Eng VIN Z, Automatic Trans
When idling can be continued
2013 Mazda 2 Touring, 1.5L Eng VIN Z, Automatic TransSECTION When idling can be continued
- Warm-up the engine.
- Connect the M-MDS to the DLC-2.
- Idle the engine.
- Access the VT Duty1 wt PID. (See ON-BOARD DIAGNOSTIC TEST [MZR 1.5] ).
- Set the OCV duty valve to 100% and verify that the engine idles roughly or stalls.
- If as specified, inspect the timing belt component (valve timing deviation).
- If not as specified, go to the next step.
- Remove the OCV and connect the OCV connector to the OCV. (See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION ).
- Switch the ignition to ON.
- Access the VT Duty1 wt PID. (See ON-BOARD DIAGNOSTIC TEST [MZR 1.5] ).
- Set the OCV duty value to 100% and verify that the spool valve operates in the advance direction.
- If not as specified, inspect the following:
- OCV operation (See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION ).
- Wiring harness and connectors between OCV terminal A and PCM terminal 21 for open or short circuit
- Wiring harness and connectors between OCV terminal B and PCM terminal 2W for open or short circuit
- Inspect the following hydraulic passages for restriction and/or leakage:
- Oil pressure switch-OCV
- OCV-camshaft
- Camshaft internal passage
- If they are normal, replace the intake camshaft pulley (with a built-in variable valve timing actuator). (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION ).
RENDER: 1.0x
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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.