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Home >> Mazda >> 2012 >> 6 i Touring >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 22 (On-Board Diagnostic [Engine Controls MZI 3.7] (4 Of 5)) >> DTC P1127:00 >> Diagnostic Procedure

Diagnostic Procedure

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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 availability.
  • Is any related Service Bulletins available?
 Yes Perform repair or diagnosis according to available Service Bulletins.
  • If vehicle is not repaired, go to the next step.
No Go to the next step.
3 EXHAUST TEMPERATURE OUT OF RANGE 
NOTE:
  • Address all other DTCs before proceeding.
  • Switch the ignition ON (Engine running)
  • Verify that the engine is at normal operating temperature.
  • Access the PCM and monitor the HO2S heater PID.
  • Is the PID state ON?
 Yes Perform the KOER self-test, then go to the next step.
(See KOEO/KOER SELF TEST .)
No Run the engine until the PID indicates ON.
Perform the KOER self-test, then go to the next step.
(See KOEO/KOER SELF TEST .)
4 VERIFY TROUBLESHOOTING OF DTC P1127:00 HAS BEEN COMPLETED 
  • Verify that all disconnected connectors reconnected.
  • Clear the DTC from the PCM memory using the M-MDS.
  • Start engine.
  • Perform the KOEO or KOER self-test.

    (See KOEO/KOER SELF TEST .)

  • Is same DTC present?
 Yes Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION .)
No Go to the next step.
5 VERIFY AFTER REPAIR PROCEDURE 
 Yes Go to the applicable DTC inspection.
(See DTC TABLE .)
No Troubleshooting completed.
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