DTC P0404 [MZR-CD (RF Turbo)]

id0102f1831500

DTC P0404

EGR control circuit range/performance
DETECTION CONDITION
•  The PCM monitors EGR valve control signal current to calculate EGR valve (DC motor) temperature. If the calculate malfunction when the EGR valve (DC motor) temperature is more than 90 °C {194 °F}, the PCM determines that the EGR valve control circuit has a malfunction.
Diagnostic support note
•  MIL illuminates if PCM detects above malfunction condition in two consecutive drive cycles or in one drive cycle while DTC for the same malfunction has been stored in PCM.
•  PENDING CODE is available if PCM detects the above malfunction condition during first drive cycle.
•  FREEZE FRAME DATA is available.
•  DTC is stored in the PCM memory.
POSSIBLE CAUSE
•  EGR valve malfunction
•  Connector or terminal 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 FREEZE FRAME DATA on repair order, then go to the next step.
2
VERIFY RELATED REPAIR INFORMATION AVAILABILITY
•  Check for related service repair information availability?
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.
3
IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA
•  Is DTC P0404 on FREEZE FRAME DATA?
Yes
Go to the next step.
No
Go to troubleshooting procedures for DTC in FREEZE FRAME DATA.
(See DTC TABLE [MZR-CD (RF Turbo)].)
4
INSPECT EGR VALVE AND PCM CONNECTORS FOR POOR CONNECTION
•  Turn the engine switch off.
•  Disconnect the EGR valve connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, and corrosion).
•  Is there any malfunction?
Yes
Repair or replace terminal, then go to Step 6.
No
Go to the next step.
5
INSPECT EGR VALVE
•  Inspect the EGR valve.
•  Is the EGR valve normal?
Yes
Go to the next step.
No
Replace the EGR valve, then go to the next step.
(See EGR VALVE REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)
6
VERIFY TROUBLESHOOTING OF DTC P0404 COMPLETED
•  Make sure to reconnect all disconnected connectors.
•  Turn the engine switch to ON position (engine off).
•  Clear the DTC from the PCM memory using the M-MDS.
•  Start the engine.
•  Is the same DTC present?
Yes
Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION [MZR-CD (RF Turbo)].)
No
Go to the next step.
7
VERIFY AFTER REPAIR PROCEDURE
•  Perform the “AFTER REPAIR PROCEDURE”.
•  Is any DTC present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [MZR-CD (RF Turbo)].)
No
Troubleshooting completed.