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Home >> Mazda >> 2012 >> 6 i Touring >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 21 (On-Board Diagnostic [Engine Controls MZI 3.7] (3 Of 5)) >> DTC P0443:00 >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different variant/trim than selected.
STEP INSPECTION ACTION
1 VERIFY FREEZE FRAME DATA HAS BEEN RECORDED 
  • Has FREEZE FRAME DATA been recorded?
 Yes Go to the next step.
No Record FREEZE FRAME DATA on the repair order, then go to the next step.
2 VERIFY RELATED REPAIR INFORMATION AVAILABILITY 
  • Verify related Service Bulletins and/or on-line repair information availability.
  • Is any related Service Bulletins available?
 Yes Perform repair or diagnosis according to the available Service Bulletins.
  • If the vehicle is not repaired, go to the next step.
No Go to the next step.
3 INSPECT PURGE SOLENOID VALVE CONNECTOR FOR POOR CONNECTION 
  • Switch the ignition to off.
  • Disconnect purge solenoid valve connector.
  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
  • Are there any malfunction?
 Yes Repair or replace suspected part, then go to Step 10.
No Go to the next step.
4 INSPECT POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT 
  • Switch the ignition to ON (Engine off).
  • Measure voltage between purge solenoid valve terminal A (wiring harness-side) and body ground.
  • Is voltage B+  ?
 Yes Go to the next step.
No Repair or replace suspected part, then go to Step 10.
5 INSPECT PURGE SOLENOID VALVE CONTROL CIRCUIT FOR SHORT TO POWER SUPPLY 
  • Switch the ignition to ON (Engine off).
  • Measure the voltage between purge solenoid valve control terminal B (wiring harness-side) and body ground.
  • Is voltage B+?
 Yes Repair or replace suspected part, then go to Step 10.
No Go to the next step.
6 INSPECT PURGE SOLENOID VALVE CONTROL CIRCUIT FOR SHORT TO GROUND 
  • Switch the ignition to off.
  • Inspect for continuity between purge solenoid valve control terminal B (wiring harness-side) and body ground.
  • Is there continuity?
 Yes Repair or replace suspected part, then go to Step 10.
No Go to the next step.
7 INSPECT PCM CONNECTOR FOR POOR CONNECTION 
  • Switch the ignition to off.
  • Disconnect PCM connector.
  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
  • Is there any malfunction?
 Yes Repair or replace suspected part, then go to Step 10.
No Go to the next step.
8 INSPECT PURGE SOLENOID VALVE CONTROL CIRCUIT FOR OPEN CIRCUIT 
  • Switch the ignition to off.
  • Inspect continuity between purge solenoid valve terminal B (wiring harness-side) and PCM terminal 2H (wiring harness-side).
  • Is there continuity?
 Yes Go to the next step.
No Repair or replace suspected part, then go to Step 10.
9 INSPECT PURGE SOLENOID VALVE 
 Yes Replace purge solenoid valve (See PURGE SOLENOID VALVE REMOVAL/INSTALLATION .), then go to Step 10.
No Go to the next step.
10 VERIFY TROUBLESHOOTING OF DTC P0443:00 COMPLETED 
  • Make sure to reconnect all disconnected connectors.
  • Clear DTC from PCM memory using M-MDS.
  • Perform the KOEO or KOER self-test.

    (See KOEO/KOER SELF TEST .)

  • Is the PENDING CODE same DTC present?
 Yes Repeat the inspection from Step 1.
Go to the next step.
No Go to the next step.
11 VERIFY AFTER REPAIR PROCEDURE 
 Yes Go to the applicable DTC inspection.
(See DTC TABLE .)
No Troubleshooting completed.
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