DTC P0505:00 [MZR 2.3 DISI Turbo]

id0102g4704900

DTC P0505:00

IAC system malfunction
DETECTION CONDITION
•  The PCM cannot control idle speed toward the target idle speed during the KOER self test.
Diagnostic support note
•  The MIL does not illuminate.
•  FREEZE FRAME DATA (Mode 2)/Snapshot data is not available.
•  The DTC is not stored in the PCM memory.
POSSIBLE CAUSE
•  Improper operation of electronic throttle control system
•  A/C relay control circuit malfunction
•  Generator control circuit malfunction
•  Air cleaner element clogged.
•  Air intake passage clogged.
•  Low engine compression (Over capacity of blow-by gas)
•  PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
VERIFY RELATED SERVICE INFORMATION AVAILABILITY
•  Verify related Service Information availability.
•  Is any related Service Information available?
Yes
Perform repair or diagnosis according to the available Service Information.
•  If the vehicle is not repaired, go to the next step.
No
Go to the next step.
2
VERIFY RELATED PENDING CODE AND/OR DTC
•  Switch the ignition to off, then to ON (engine off).
•  Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure.
•  Is the PENDING CODE/DTC P0506:00, P0507:00, P0638:00, P2100:00, P2101:00, P2108:00 or P2119:00 also present?
Yes
Go to the applicable PENDING CODE or DTC inspection.
(See DTC P0506:00 [MZR 2.3 DISI Turbo].)
(See DTC P0507:00 [MZR 2.3 DISI Turbo].)
(See DTC P0638:00 [MZR 2.3 DISI Turbo].)
(See DTC P2100:00 [MZR 2.3 DISI Turbo].)
(See DTC P2101:00 [MZR 2.3 DISI Turbo].)
(See DTC P2108:00 [MZR 2.3 DISI Turbo].)
(See DTC P2119:00 [MZR 2.3 DISI Turbo].)
No
Go to the next step.
3
VERIFY ELECTRONIC THROTTLE CONTROL SYSTEM OPERATION
•  Perform the throttle position (TP) sweep inspection.
•  Does the electronic throttle control system work properly?
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 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 [MZR 2.3 DISI Turbo].)
No
Go to the next step.
5
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 9.
6
INSPECT AIR CLEANER ELEMENT
•  Remove the air cleaner element with the engine running.
•  Does the engine speed increase?
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 clogged?
Yes
Clean or replace the throttle body passage, then go to Step 9.
No
Go to the next step.
8
INSPECT ENGINE COMPRESSION
•  Inspect the engine compression.
•  Is there any malfunction?
Yes
Repair or replace the malfunctioning part according to the inspection results, then go to the next step.
No
Go to the next step.
9
VERIFY DTC TROUBLESHOOTING COMPLETED
•  Make sure to reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Perform the KOER self test.
•  Is the same DTC present?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the PCM.
Go to the next step.
No
Go to the next step.
10
VERIFY AFTER REPAIR PROCEDURE
•  Perform the “AFTER REPAIR PROCEDURE”.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [MZR 2.3 DISI Turbo].)
No
DTC troubleshooting completed.