Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Mazda >> 2010 >> 5 Touring, 2.3 L >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic [Engine Control System L3] >> DTC P0328 >> Diagnostic procedure

Diagnostic procedure

DTC P0328 [L3] DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 VERIFY FREEZE FRAME DATA (MODE 12) HAS BEEN RECORDED 
  • Has FREEZE FRAME DATA (Mode 12) been recorded?
 Yes Go to the next step.
No Record the FREEZE FRAME DATA (Mode 12) 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 repair information available?
 Yes Perform repair or diagnosis according to the available repair information.
  • If the vehicle is not repaired, go to the next step.
No Go to the next step.
3 INSPECT KS CONNECTOR TERMINAL 
  • Turn the ignition switch off.
  • Disconnect KS connector.
  • Inspect for poor connection at terminals A and B (such as damaged/pulled-out pins, corrosion).
  • Is there any malfunction?
 Yes Repair the terminal, then go to Step 7.
No Go to the next step.
4 INSPECT KS 
 Yes Go to the next step.
No Replace the KS, then go to Step 7.
5 INSPECT KNOCK SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY 
  • Turn the ignition switch to the ON position (Engine off).
  • Measure the voltage between KS terminal A (wiring-harness-side) and body ground and KS terminal B (wiring-harness-side) and body ground
  • Is there any voltage reading?
 Yes Repair or replace wiring harness for short to power supply, then go to Step 7.
No Go to the next step.
6 INSPECT PCM CONNECTOR 
  • Disconnect PCM connector.
  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
  • Is there any malfunction?
 Yes Repair or replace the terminal, then go to the next step.
No Go to the next step.
7 VERIFY TROUBLESHOOTING OF DTC P0328 COMPLETED 
  • Make sure to connect all disconnected connectors.
  • Clear the DTC from the PCM memory using the M-MDS.

    (See AFTER REPAIR PROCEDURE .)

  • Perform the KOEO/KOER self test.

    (See KOEO/KOER SELF TEST .)

  • Is the same DTC present?
 Yes Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION .)
No Go to the next step.
8 VERIFY AFTER REPAIR PROCEDURE 
 Yes Go to the applicable DTC troubleshooting.
(See DTC TABLE .)
No Troubleshooting completed.
scientia non olet · About Mike's Workshop Manuals