DTC P0234:00 [MZR-CD (RF Turbo)]

id0102f1148400

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 {225 mmHg, 8.9 inHg}, 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.
•  The FREEZE FRAME DATA is not available.
•  The DTC is stored in the PCM memory.
POSSIBLE CAUSE
•  Boost sensor characteristic malfunction
•  Guide blade actuator stuck
•  VBC solenoid valve stuck open
•  Turbo charger malfunction
•  PCM malfunction

Diagnostic procedure

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 the FREEZE FRAME 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
•  Is the FREEZE FRAME DATA present?
Yes
Go to troubleshooting procedures for DTC in FREEZE FRAME DATA.
No
Go to the next step.
4
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 (RF Turbo)].)
No
Go to the next step.
5
INSPECT GUIDE BLADE ACTUATOR FOR STUCK OPEN
•  Inspect guide blade actuator.
•  Is VBC actuator stuck open?
Yes
Replace turbocharger, then go to Step 8.
No
Go to the next step.
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 (RF Turbo)].)
7
INSPECT TURBOCHARGER
•  Inspect turbocharger.
•  Is turbocharger normal?
Yes
Go to the next step.
No
Replace turbocharger, then go to next step.
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 (RF Turbo)].)
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 (RF Turbo)].)
No
Troubleshooting completed.