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.
2016 Mazda 5 GS, Automatic TransFACTORY OEM SERVICE PROCEDURE
Purge Control System Inspection
- Start the engine.
- Disconnect the vacuum hose between the purge solenoid valve and the charcoal canister.
- Put a finger to the purge solenoid valve and verify that there is no vacuum applied when the engine is cold.
- If there is a vacuum, inspect the following:
- Wiring harness and connectors (Purge solenoid valve terminal A-PCM terminal 1BA)
- Purge solenoid valve (See PURGE SOLENOID VALVE INSPECTION .)
- Warm up the engine to the normal operating temperature.
- Stop the engine.
- Connect the M-MDS to the DLC-2 and verify that the DTC P0443:00 is shown. Perform the DTC inspection. (See DTC P0443:00 .)
- Switch the ignition to ON.
- Access the ECT PID. (See ON-BOARD DIAGNOSTIC TEST .)
- Verify that the engine coolant temperature is more than 60°C {140°F}.
- If the M-MDS indicates less than 60°C {140°F}, perform the ECT sensor inspection. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION .)
- Set the vehicle on the dynamometer or chassis roller.WARNING:
- When the dynamometer or chassis roller is operating, there is a possibility that the operator may come into contact with or be caught up in the rotating parts, leading to serious injuries or death. When performing work while the dynamometer or chassis roller is operating, be careful not to come into contact with or be caught up in any of the rotating parts.
- Drive vehicle at engine speed approx. 2, 000 RPM for 30 s or more.
- Put a finger to the purge solenoid valve and verify that there is no vacuum applied while Step 2.
- If there is no vacuum, inspect the following:
- Wiring harness and connector (Main relay-Purge solenoid valve-PCM terminal 1BA)
- Purge solenoid valve (See PURGE SOLENOID VALVE INSPECTION .)
- MAF, APP1, APP2, TP REL and LOAD PIDs (See PCM INSPECTION .)
- If there is vacuum, inspect the following:
- Vacuum hose (Purge solenoid valve-Charcoal canister)
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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