DTC P0234:00 [MZR-CD 2.2]

id0102f3148400

DTC P0234:00

Turbocharger overboost condition
DETECTION CONDITION
•  PCM monitors intake boost pressure using the boost sensor. If the difference between target intake boost pressure and actual intake boost pressure is above 30.0 kPa {0.31 kgf/cm2, 4.4 psi}, PCM determines that the VBC system is over boost condition.
Diagnostic support note
•  This is a continuous monitor (CCM).
•  The MIL does not illuminate.
•  Pending code is available if PCM detects the above malfunction condition.
•  FREEZE FRAME DATA (mode2) and snapshot data are not available.
•  The DTC is stored in the PCM memory.
POSSIBLE CAUSE
•  Guide blade actuator position sensor malfunction
•  VBC solenoid valve stuck open
•  Guide blade actuator stuck
•  Boost sensor characteristic malfunction
•  Turbocharger malfunction
•  PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
VERIFY FREEZE FRAME DATA (MODE2) OR SNAPSHOT DATA HAVE BEEN RECORDED
•  Have FREEZE FRAME DATA (mode2) or snapshot data been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME DATA (mode2) and snapshot data on the repair order, then go to the next step.
2
VERIFY RELATED SERVICE INFORMATION
•  Verify related Service Information availability.
•  Is any related Service Information available?
Yes
Perform repair or diagnosis according to available Service Information.
•  If vehicle is not repaired, go to the next step.
No
Go to the next step.
3
IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA (MODE2)
•  Is DTC P0234:00 on FREEZE FRAME DATA (mode2)?
Yes
Go to the next step.
No
Go to troubleshooting for DTC on FREEZE FRAME DATA (mode2).
(See DTC TABLE [MZR-CD 2.2].)
4
INSPECT GUIDE BLADE ACTUATOR POSITION SENSOR
•  Inspect guide blade actuator position sensor.
•  IS there normal?
Yes
Go to Step 6.
No
Go to the next step.
5
INSPECT VBC SOLENOID VALVE FOR STUCK OPEN
•  Inspect VBC solenoid valve.
•  Is VBC solenoid valve stuck open?
Yes
Replace VBC solenoid valve, then go to Step 8.
(See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [MZR-CD 2.2].)
No
Replace the turbocharger because there is a malfunction in either the guide blade actuator or the guide blade actuator position sensor.
(See EXHAUST SYSTEM REMOVAL/INSTALLATION [MZR-CD 2.2].)
6
INSPECT BOOST SENSOR
•  Inspect boost sensor.
•  Is boost sensor normal?
Yes
Go to the next step.
No
Replace the boost sensor, then go to Step 8.
(See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [MZR-CD 2.2].)
7
INSPECT TURBOCHARGER
•  Inspect turbocharger.
•  Is turbocharger normal?
Yes
Go to the next step.
No
Replace turbocharger, then go to next step.
(See EXHAUST SYSTEM REMOVAL/INSTALLATION [MZR-CD 2.2].)
8
VERIFY TROUBLESHOOTING OF DTC P0234:00 COMPLETED
•  Make sure to reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Perform the OBD Drive Mode.
•  Is PENDING CODE the same as DTC present?
Yes
Replace PCM, then go to next step.
(See PCM REMOVAL/INSTALLATION [MZR-CD 2.2].)
No
Go to the next step.
9
VERIFY AFTER REPAIR PROCEDURE
•  Perform “After Repair Procedure”.
•  Is there any DTC present?
Yes
Go to applicable DTC troubleshooting.
(See DTC TABLE [MZR-CD 2.2].)
No
Troubleshooting completed.