mazda Workshop Repair Guides

Mazda Workshop Service and Repair Manuals

Emissions/Electrical - MIL ON/DTC's P0443 or P0455 Set|Page 2053 > < Emissions/Electrical - MIL ON/DTC's P0443 or P0455 Set|Page 2051
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Canister Purge Solenoid: Testing and Inspection

Simulation Test

1. Carry out the "Purge Control Inspection".See: Testing and Inspection/Purge Control Inspection

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If not as specified, perform the following inspection of the purge solenoid valve.

Airflow Inspection

NOTE:  Perform the following test only when directed.

1. Remove the purge solenoid valve. 

2. Inspect airflow between the ports under the following conditions.

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If not as specified, replace the purge solenoid valve.

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If as specified but the "Purge Control Inspection" failed, inspect the vacuum hoses for improper routing, kinks or leakage, and inspect "Circuit
Open/Short Inspection".

Circuit Open/Short Inspection

1. Disconnect the PCM connector.

2. Connect the SST (104 Pin Breakout Box) with the PCM disconnected.
3. Tighten the connector attaching bolt.

Tightening torque 
7.9 - 10.7 N.m {80 - 110 kgf.cm, 69.5 - 95.4 in.lbf}

4. Inspect the following wiring harness for open or short (Continuity check).

Open circuit
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If there is no continuity, the circuit is open. Repair or replace the harness.
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Purge solenoid valve terminal B (harness-side) and 104 pin breakout box terminal 18

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Purge solenoid valve terminal A (harness-side) and main relay terminal D (harness-side)

Short circuit

Emissions/Electrical - MIL ON/DTC's P0443 or P0455 Set|Page 2053 > < Emissions/Electrical - MIL ON/DTC's P0443 or P0455 Set|Page 2051