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 DTC P0404 [MZR-CD (RF Turbo)]

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.
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.
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 WDS or equivalent.
• Start the engine.
• Is the same DTC present?
Yes
Replace the PCM, then go to the next step.
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.
No
Troubleshooting completed.