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Home >> Mazda >> 2012 >> 6 i Touring >> Repair and Diagnosis >> External Pages >> Different car >> Section 631 (On-Board Diagnostic (Engine Control System MZI-3.7) (4 Of 5)) >> DTC P065B:00 [MZI-3.7] >> Diagnostic procedure

Diagnostic procedure

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
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 GENERATOR CONNECTOR FOR POOR CONNECTION 
  • Switch the ignition to off
  • Disconnect the generator 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 GENERATOR CIRCUIT FOR SHORT TO POWER SUPPLY 
  • Switch the ignition to ON (Engine off).
  • Measure the voltage between generator terminal LI (wiring harness-side) and body ground.
  • Is the voltage B+  ?
Yes Repair or replace suspected part, then go to Step 10.
No Go to the next step.
5 INSPECT GENERATOR CIRCUIT FOR SHORT TO GROUND 
  • Inspect for continuity between generator terminal LI (wiring harness-side) and body ground
  • Is there continuity?
Yes Repair or replace suspected part, then go to the next step.
No Go to the next step.
6 INSPECT PCM CONNECTOR FOR POOR CONNECTION 
  • Switch the ignition to off
  • Inspect for poor connection (such as damaged/pulled-out terminals, corrosion).
  • Are there any malfunction?
Yes Repair or replace suspected part, then go to Step 10.
No Go to the next step.
7 INSPECT GENERATOR CIRCUIT FOR OPEN CIRCUIT 
  • Inspect for continuity between generator terminal LI (wiring harness-side) and PCM terminal 1O (wiring harness-side)
  • Is there continuity?
Yes Go to the next step.
No Repair or replace suspected part, then go to Step 10.
8 INSPECT BATTERY POSITIVE TERMINAL FOR POOR INSTALLATION 
  • Switch the ignition to off
  • Inspect the battery positive terminal for looseness.
  • Is there any malfunction?
Yes Connect the battery positive terminal correctly, then go to Step 10.
No Go to the next step.
9 INSPECT GENERATOR 
Yes Replace the generator, then go to the next step.
(See GENERATOR REMOVAL/INSTALLATION [MZI-3.7] .)
No Go to the next step.
10 VERIFY TROUBLESHOOTING OF DTC P065B:00 HAS BEEN COMPLETED 
  • Verify that all disconnected connectors reconnected
  • Clear the DTC from the PCM memory using the M-MDS.
  • Perform the "KOEO or KOER self-test" using the M-MDS.

    (See KOEO/KOER SELF TEST [MZI-3.7] )

  • Is the PENDING CODE for this DTC present?
Yes Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION [MZI-3.7] .)
No Go to the next step.
11 VERIFY AFTER REPAIR PROCEDURE 
Yes Go to the applicable DTC inspection.
(See DTC TABLE [MZI-3.7] .)
No Troubleshooting completed.