DTC P0405:00 [MZR-CD 2.2]

id0102f3155400

DTC P0405:00

EGR valve position sensor circuit low input
DETECTION CONDITION
•  The PCM monitors the input voltage from the EGR position sensor when the ignition switch is ON position. If the input voltage is less than 0.2 V, the PCM determines that the EGR valve position sensor circuit has a malfunction.
MONITORING CONDITIONS
―  Battery voltage: 8—20 V
Diagnostic support note
•  The MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle.
•  FREEZE FRAME DATA (Mode 2)/Snapshot data is available.
•  The DTC is stored in the PCM memory.
POSSIBLE CAUSE
•  EGR valve connector or terminals malfunction
•  Short to ground in wiring harness between the following terminals:
―  EGR valve terminal A—PCM terminal 1CC
―  EGR valve terminal E—PCM terminal 1AH
•  PCM connector or terminals malfunction
•  EGR valve position sensor signal circuit and ground circuit are shorted to each other.
•  Open circuit in wiring harness between EGR valve terminal A and PCM terminal 1CC
•  EGR valve position sensor malfunction
•  PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA (MODE 2)
•  Perform the Freeze Frame PID Data Access Procedure.
•  Is the DTC P0405:00 on FREEZE FRAME DATA (Mode 2)?
Yes
Go to the next step.
No
Go to the troubleshooting procedure for DTC on FREEZE FRAME DATA (Mode 2).
(See DTC TABLE [MZR-CD 2.2].)
2
VERIFY FREEZE FRAME DATA (MODE 2)/SNAPSHOT DATA HAS BEEN RECORDED
•  Has the FREEZE FRAME DATA (Mode 2)/snapshot data been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME DATA (Mode 2)/snapshot data on the repair order, then go to the next step.
3
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.
4
INSPECT EGR VALVE CONNECTOR CONDITION
•  Switch the ignition to off.
•  Disconnect the EGR valve connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
•  Is there any malfunction?
Yes
Repair or replace the connector and/or terminals, then go to Step 10.
No
Go to the next step.
5
INSPECT EGR VALVE POSITION SENSOR CIRCUIT FOR SHORT TO GROUND
•  EGR valve connector is disconnected.
•  Inspect for continuity between the following terminals (wiring harness-side) and body ground:
―  EGR valve terminal A
―  EGR valve terminal E
•  Is there continuity?
Yes
If the short to ground circuit could be detected:
•  Repair or replace the wiring harness for a possible short to ground.
If the short to ground circuit could not be detected:
•  Replace the PCM (short to ground in the PCM internal circuit).
Go to Step 10.
No
Go to the next step.
6
INSPECT PCM CONNECTOR CONDITION
•  Disconnect the PCM connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
•  Is there any malfunction?
Yes
Repair or replace the connector and/or terminals, then go to Step 10.
No
Go to the next step.
7
INSPECT EGR VALVE POSITION SENSOR SIGNAL CIRCUIT AND GROUND CIRCUIT FOR SHORT TO EACH OTHER
•  EGR valve and PCM connectors are disconnected.
•  Inspect for continuity between EGR valve terminals E and C (wiring harness-side).
•  Is there continuity?
Yes
Repair or replace the wiring harness for a possible short to each other, then go to Step 10.
No
Go to the next step.
8
INSPECT EGR VALVE POSITION SENSOR POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT
•  EGR valve and PCM connectors are disconnected.
•  Inspect for continuity between EGR valve terminal A (wiring harness-side) and PCM terminal 1CC (wiring harness-side).
•  Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness for a possible open circuit, then go to Step 10.
9
INSPECT EGR VALVE POSITION SENSOR
•  Reconnect all disconnected connectors.
•  Inspect the EGR valve position sensor.
•  Is there any malfunction?
Yes
Replace the EGR valve, then go to the next step.
(See EGR VALVE REMOVAL/INSTALLATION [MZR-CD 2.2].)
No
Go to the next step.
10
VERIFY DTC TROUBLESHOOTING COMPLETED
•  Make sure to reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Start the engine.
•  Perform the KOEO or KOER self test.
•  Is the same DTC present?
Yes
Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION [MZR-CD 2.2].)
No
Go to the next step.
11
VERIFY AFTER REPAIR PROCEDURE
•  Perform the “AFTER REPAIR PROCEDURE”.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [MZR-CD 2.2].)
No
DTC troubleshooting completed.