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Home >> Mazda >> 2011 >> 6 s Touring Plus >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (On-Board Diagnostic [Engine Control System MZR 2.5]) >> DTC P0505:00 >> Diagnostic procedure

Diagnostic procedure

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DIAGNOSTIC PROCEDURE CHART

STEP INSPECTION ACTION
1 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.
2 VERIFY RELATED PENDING AND STORED DTC 
  • Switch the ignition to off, then to ON (engine off).
  • Verify pending and stored DTCs using the M-MDS.

    (See ON-BOARD DIAGNOSTIC TEST .)

  • Are any other DTCs present?
Yes Go to the applicable DTC inspection.
(See DTC TABLE .)
No Go to the next step.
3 INSPECT DRIVE-BY-WIRE CONTROL SYSTEM OPERATION  Yes Go to the next step.
No Repair or replace the malfunctioning part according to the inspection results, then go to Step 9.
4 INSPECT A/C MAGNETIC CLUTCH OPERATION 
  • Turn the fan switch off.
  • Is the magnetic clutch still on?
Yes Perform the "NO. 24 A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY".
(See NO. 24 A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY .)
No Go to the next step.
5 INSPECT GENERATOR CONTROL CIRCUIT MALFUNCTION 
  • Apply the electrical load.
  • Is the engine speed increased?
Yes Go to the next step.
No Repair the generator control circuit for short to power supply, then go to Step 9.
6 INSPECT AIR CLEANER ELEMENT 
  • Remove the air cleaner element with the engine running.
  • Is the engine speed increased?
Yes Clean or replace the air cleaner element, then go to Step 9.
No Go to the next step.
7 INSPECT THROTTLE BODY PASSAGE 
  • Visually inspect the throttle body passage.
  • Is the throttle body passage clogged?
Yes Clean or replace the throttle body passage, then go to Step 9.
No Go to the next step.
8 INSPECT ENGINE COMPRESSION  Yes Overhaul the engine for repairs, then go to the next step.
No Go to the next step.
9 VERIFY DTC TROUBLESHOOTING COMPLETED  Yes Repeat the inspection from Step 1.
  • If the malfunction recurs, replace the PCM.

(See PCM REMOVAL/INSTALLATION .)
Go to the next step.
No Go to the next step.
10 VERIFY AFTER REPAIR PROCEDURE  Yes Go to the applicable DTC inspection.
(See DTC TABLE .)
No DTC troubleshooting completed.