Nissan March K13. Manual - part 187

P0405, P0406 EGRT SENSOR

EC-209

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 1)]

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P0405, P0406 EGRT SENSOR

DTC Logic

INFOID:0000000006021959

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

INSPECTION START

Confirm the detected DTC.

Which DTC is detected?

P0405 >> GO TO 2.
P0406 >> GO TO 4.

2.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.

>> GO TO 3.

3.

PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P0405

With CONSULT-III

1.

Turn ignition switch ON.

2.

Select “DATA MONITOR” mode with CONSULT-III.

3.

Verify that “COOLAN TEMP/S” indicates less than 50

°

C (122

°

F).

If the engine coolant temperature is above the range, cool the engine down.

CAUTION:

Do not attempt to lower the engine coolant temperature with a fan or means other than ambient air.
Doing so may produce an inaccurate diagnostic result.

4.

Start engine and let it idle for at least 8 seconds.

5.

Check 1st trip DTC.

With GST

Follow the procedure “With CONSULT-III” above.

Is 1st trip DTC detected?

YES

>> Go to 

EC-210, "Diagnosis Procedure"

.

NO

>> INSPECTION END

4.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Always perform the test at a temperature above -10

°

C (14

°

F).

Do you have CONSULT-III?

YES

>> GO TO 5.

NO

>> GO TO 7.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0405

EGR temperature sen-
sor circuit low input

An excessively low voltage from the EGR 
temperature sensor is sent to ECM even 
when engine coolant temperature is low.

• Harness or connectors

(The EGR temperature sensor circuit is 
shorted.)

• EGR temperature sensor
• Malfunction of EGR function

P0406

EGR temperature sen-
sor circuit high input

An excessively high voltage from the EGR 
temperature sensor is sent to ECM even 
when engine coolant temperature is high.

• Harness or connectors

(The EGR temperature sensor circuit is 
open.)

• EGR temperature sensor
• Malfunction of EGR function

EC-210

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 1)]

P0405, P0406 EGRT SENSOR

5.

CHECK EGR VOLUME CONTROL VALVE FUNCTION

With CONSULT-III

1.

Start the engine and warm it up to normal operating temperature.

2.

Perform “POWER BALANCE” in “ACTIVE TEST” mode with CONSULT-III.

3.

Keeping engine speed at 2,500 rpm.

4.

Touch “Qu” and set the EGR volume control valve opening to 10 step.

5.

Check “EGR TEMP SEN” indication should decrease to less than 1.0 V.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Go to 

EC-210, "Diagnosis Procedure"

.

6.

PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P0406

With CONSULT-III

1.

Turn ignition switch OFF and wait at least 10 seconds.

2.

Start the engine and select “DATA MONITOR” mode with CONSULT-III.

3.

Drive the vehicle for at least 5 consecutive seconds under the following conditions.

CAUTION:

Always drive vehicle at a safe speed.

4.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES

>> Go to 

EC-210, "Diagnosis Procedure"

.

NO

>> INSPECTION END

7.

PERFORM DTC CONFIRMATION PROCEDURE FOR DTC P0406

With GST

1.

Start engine and warm it up to normal operating temperature.

2.

Turn ignition switch OFF and wait at least 10 seconds.

3.

Select Service $01 with GST and maintain the following conditions for at least 5 consecutive seconds.

CAUTION:

Always drive vehicle at a safe speed.

4.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES

>> Go to 

EC-210, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006021960

1.

CHECK EGR TEMPERATURE SENSOR POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect EGR temperature sensor harness connector.

3.

Turn ignition switch ON.

4.

Check the voltage between EGR temperature sensor harness connector and ground.

ENG SPEED

1,000 - 3,200 rpm

VHCL SPEED SE

More than 10 km/h (6 mph)

B/FUEL SCHDL

4.0 - 12.0 msec

Selector lever

Suitable position

Engine speed

1,000 - 3,200 rpm

Vehicle speed

10 km/h (6 MPH) or more

Shift lever

Suitable position

P0405, P0406 EGRT SENSOR

EC-211

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 1)]

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Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair open circuit or short to ground or short to power in harness or connector.

2.

CHECK EGR TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between EGR temperature sensor harness connector and ECM harness connector.

4.

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair open circuit or short to ground or short to power in harness or connectors.

3.

CHECK EGR TEMPERATURE SENSOR

Check EGR temperature sensor. Refer to 

EC-211, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace EGR temperature sensor. Refer to 

EM-26, "Exploded View"

.

4.

CHECK EGR VOLUME CONTROL VALVE

Check EGR volume control VALVE. Refer to 

EC-207, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace EGR volume control valve. Refer to 

EM-26, "Exploded View"

.

5.

CHECK INTERMITTENT INCIDENT

Check intermittent incident. Refer to 

GI-33, "Intermittent Incident"

.

>> Repair or replace malfunctioning part.

Component Inspection

INFOID:0000000006021961

1.

CHECK EGR TEMPERATURE SENSOR

1.

Turn ignition switch OFF.

2.

Disconnect EGR temperature sensor harness connector.

3.

Remove EGR temperature sensor.

4.

Check resistance between EGR temperature sensor terminals
by heating with hot water as shown in the figure.

Is the inspection result normal?

EGR temperature sensor

Ground

Voltage

Connector

Terminal

F73

1

Ground

Battery voltage

EGR temperature sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

F73

2

F16

51

Existed

+

-

Condition

 

Resistance

Terminals

1

2

Temperature(

°

C)

0

0.66 - 1.00 M

Ω

50

0.068 - 0.089 M

Ω

100

0.012 - 0.014 M

Ω

PBIA9400J

EC-212

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 1)]

P0405, P0406 EGRT SENSOR

YES

>> INSPECTION END

NO

>> Replace EGR temperature sensor. Refer to 

EM-26, "Exploded View"

.