Infiniti G37 Coupe. Manual - part 460

INSPECTION AND ADJUSTMENT

EC-21

< BASIC INSPECTION >

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VVEL CONTROL SHAFT POSITION SENSOR ADJUSTMENT : Description

INFOID:0000000001736789

VVEL control shaft position sensor adjustment is an operation to adjust the initial position angle that is the
basis for the VVEL control shaft position sensor.
It must be performed each time VVEL actuator sub assembly is replaced.

CAUTION:

• It must be performed only on the replaced bank side.
• It must not be performed except when VVEL actuator sub assembly is replaced. If by any chance the

adjustment is performed, replace VVEL actuator sub assembly.

VVEL CONTROL SHAFT POSITION SENSOR ADJUSTMENT : Special Repair Re-
quirement

INFOID:0000000001736790

1.

START

Do you have CONSULT-III?

Do you have CONSULT-III?

YES

>> GO TO 2.

NO

>> GO TO 3.

2.

PERFORM VVEL CONTROL SHAFT POSITION SENSOR ADJUSTMENT

 With CONSULT-III

1.

Turn ignition switch ON.

2.

Select “VVEL POS SEN ADJ PREP” in “WORK SUPPORT” mode with CONSULT-III.

3.

Touch “Start” and wait a few seconds.

4.

Make sure the “CMPLT” is displayed on CONSULT-III screen.

5.

Select “VVEL POSITION SEN- B1” or “VVEL POSITION SEN- B2” in “DATA MONITOR” mode with CON-
SULT-III.

6.

Loosen the VVEL control shaft position sensor mounting bolt (1).

7.

Turn the VVEL control shaft position sensor (2) right and left
while monitoring the output voltage of “VVEL POSITION SEN-
B1” or “VVEL POSITION SEN-B2” and adjust the output voltage
to be within the standard value.

8.

Tighten the VVEL control shaft position sensor mounting bolt.

9.

Reconfirm that the output voltage of “VVEL POSITION SEN- B1”
or “VVEL POSITION SEN- B2” is within the standard value.

NOTE:
If it varies from the standard value after the bolt is tightened, perform steps 6 to 8 again.

10. Turn ignition switch OFF and wait at least 10 seconds.
11. Start engine and warm it up to normal operating temperature.
12. Turn ignition switch OFF and wait at least 10 seconds.
13. Perform idle air volume learning. Refer to 

EC-19, "IDLE AIR VOLUME LEARNING : Special Repair

Requirement"

.

>> INSPECTION END

3.

PERFORM VVEL CONTROL SHAFT POSITION SENSOR ADJUSTMENT

 Without CONSULT-III

1.

Disconnect VVEL control shaft position sensor harness connector.

2.

Remove VVEL actuator motor relay.

3.

Turn ignition switch ON, wait at least 5 seconds and then turn OFF.

Voltage

: 500

±

48mV

: 7.0 N•m (0.71kg-m, 62in-lb)

Voltage

: 500

±

48mV

JMBIA0740ZZ

EC-22

< BASIC INSPECTION >

[VQ37VHR]

INSPECTION AND ADJUSTMENT

4.

Reconnect all harness connectors disconnected.

5.

Install VVEL actuator motor relay.

6.

Turn ignition switch ON and wait at least 5 seconds.

7.

Loosen the VVEL control shaft position sensor mounting bolt (1).

8.

Turn the VVEL control shaft position sensor (2) right and left
while monitoring the output voltage between the VVEL control
module terminals with a tester and adjust the output voltage to
be within the standard value.

9.

Tighten the VVEL control shaft position sensor mounting bolt.

10. Reconfirm that the output voltage of VVEL control shaft position sensor is within the standard value.

NOTE:
If it varies from the standard value after the bolt is tightened, perform steps 7 to 9 again.

11. Turn ignition switch OFF and wait at least 10 seconds.
12. Start engine and warm it up to normal operating temperature.
13. Turn ignition switch OFF and wait at least 10 seconds.
14. Perform idle air volume learning. Refer to 

EC-19, "IDLE AIR VOLUME LEARNING : Special Repair

Requirement"

.

>> INSPECTION END

MIXTURE RATIO SELF-LEARNING VALUE CLEAR

MIXTURE RATIO SELF-LEARNING VALUE CLEAR : Description

INFOID:0000000001733925

This describes how to erase the mixture ratio self-learning value. For the actual procedure, follow the instruc-
tions in “Diagnosis Procedure”.

MIXTURE RATIO SELF-LEARNING VALUE CLEAR : Special Repair Requirement

INFOID:0000000001733926

1.

START

With CONSULT-III

1.

Start engine and warm it up to normal operating temperature.

2.

Select “SELF-LEARNING CONT” in “WORK SUPPORT” mode with CONSULT-III.

JMBIA0740ZZ

VVEL control module

Voltage

Bank

Connector

+

–

Terminal

Terminal

1

E15

3

4

500

±

48mV

2

5

6

: 7.0 N•m (0.71kg-m, 62in-lb)

VVEL control module

Voltage

Bank

Connector

+

–

Terminal

Terminal

1

E15

3 4

500

±

48mV

2

5

6

INSPECTION AND ADJUSTMENT

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< BASIC INSPECTION >

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3.

Clear mixture ratio self-learning value by touching “CLEAR”.

With GST

1.

Start engine and warm it up to normal operating temperature.

2.

Turn ignition switch OFF.

3.

Disconnect mass air flow sensor (bank 1) harness connector.

4.

Restart engine and let it idle for at least 5 seconds.

5.

Stop engine and reconnect mass air flow sensor (bank 1) harness connector.

6.

Select Service $03 with GST. Make sure DTC P0102 is detected.

7.

Select Service $04 with GST to erase the DTC P0102.

>> END

EC-24

< FUNCTION DIAGNOSIS >

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ENGINE CONTROL SYSTEM

FUNCTION DIAGNOSIS

ENGINE CONTROL SYSTEM

System Diagram

INFOID:0000000001733927

1.

ECM

2.

Can communication

3.

VVEL control module

4.

EVAP canister purge volume control 
solenoid valve

5.

EVAP service port

6.

EVAP canister vent control valve

7.

EVAP control system pressure sen-
sor

8.

EVAP canister

9.

Battery current sensor

10. Battery

11.

Fuel tank temperature sensor

12. Fuel level sensor

13. Fuel tank

14. Fuel pressure regulator

15. Fuel pump

16. Three way catalyst 2

17. Heated oxygen sensor 2

18. Three way catalyst 1

19. Engine oil temperature sensor

20. A/F sensor 1

21. Spark plug

22. PCV valve

23. Ignition coil (with power transistor)

24. VVEL actuator motor

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