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Home >> Mazda >> 2013 >> 5 Grand Touring >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> On-Board Diagnostic [Engine Control System MZR 2.5] (4 Of 5) >> DTC P0505:00 >> Diagnostic Procedure

Diagnostic Procedure

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 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 8.
3 INSPECT A/C MAGNETIC CLUTCH OPERATION 
  • Turn the fan switch off.
  • Is the magnetic clutch still on?
Yes Perform the symptom troubleshooting "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.
4 INSPECT GENERATOR CONTROL CIRCUIT MALFUNCTION 
  • Apply the electrical load.
  • Does the engine speed increase?
Yes Go to the next step.
No Repair or replace the generator control circuit for a possible short to power supply, then go to Step 8.
5 INSPECT AIR CLEANER ELEMENT 
  • Remove the air cleaner element with the engine is running.
  • Does the engine speed increase?
Yes Clean or replace the air cleaner element, then go to Step 8.
No Go to the next step.
6 INSPECT THROTTLE BODY PASSAGE 
  • Visually inspect the throttle body passage.
  • Is the throttle body passage dirty and/or restricted?
Yes Clean or replace the throttle body passage, then go to Step 8.
(See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION .)
No Go to the next step.
7 INSPECT ENGINE COMPRESSION  Yes Overhaul the engine for repairs, then go to the next step.
No Go to the next step.
8 VERIFY DTC TROUBLESHOOTING COMPLETED 
  • Make sure to reconnect all disconnected connectors.
  • Clear the DTC from the PCM memory using the M-MDS.

    (See AFTER REPAIR PROCEDURE .)

  • Perform the KOER self test.

    (See KOEO/KOER SELF TEST .)

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