Infiniti G37 Coupe. Manual - part 567

P1607 VVEL CONTROL MODULE

EC-449

< COMPONENT DIAGNOSIS >

[VQ37VHR]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

P1607 VVEL CONTROL MODULE

Description

INFOID:0000000001910908

The VVEL control module consists of a microcomputer and connec-
tors for signal input and output and for power supply. The VVEL con-
trol module controls VVEL system.

DTC Logic

INFOID:0000000001736781

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing the next test. 
1.

Turn ignition switch OFF and wait at least 10 seconds.

2.

Turn ignition switch ON.

3.

Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10V at idle.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start engine and let it idle for at least 1 second.

2.

Check DTC.

Is DTC detected?

YES

>> Go to 

EC-449, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000001736782

1.

PERFORM DTC CONFIRMATION PROCEDURE

 With CONSULT-III

1.

Turn ignition switch ON.

2.

Select “SELF-DIAG RESULTS” mode with CONSULT-III.

3.

Touch “ERASE”.

4.

Perform DTC Confirmation Procedure.
See 

EC-449, "DTC Logic"

.

 With GST

1.

Turn ignition switch ON.

2.

Select Service $04 with GST.

3.

Perform DTC Confirmation Procedure.
See 

EC-449, "DTC Logic"

.

JMBIA0879ZZ

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1607

VVEL control module circuit

• The internal circuit of the VVEL con-

trol module is malfunctioning.

• VVEL control module

EC-450

< COMPONENT DIAGNOSIS >

[VQ37VHR]

P1607 VVEL CONTROL MODULE

Is the DTC P1607 displayed again?

YES

>> GO TO 2.

NO

>> INSPECTION END

2.

REPLACE VVEL CONTROL MODULE

1.

Replace VVEL control module.

2.

Go to 

EC-17, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (VVEL CONTROL MOD-

ULE) : Special Repair Requirement"

.

>> INSPECTION END

P1608 VVEL SENSOR POWER SUPPLY

EC-451

< COMPONENT DIAGNOSIS >

[VQ37VHR]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

P1608 VVEL SENSOR POWER SUPPLY

DTC Logic

INFOID:0000000001736783

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING 

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing the next test. 
1.

Turn ignition switch OFF and wait at least 10 seconds.

2.

Turn ignition switch ON.

3.

Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10V at idle.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON and wait at least 1 second.

2.

Check DTC.

Is DTC detected?

YES

>> Go to 

EC-451, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000001736784

1.

CHECK GROUND CONNECTION

1.

Turn ignition switch OFF.

2.

Check ground connection M95. Refer to Ground Inspection in 

GI-41, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

VVEL CONTROL SHAFT POSITION SENSOR POWER SUPPLY CIRCUIT

1.

Disconnect VVEL control shaft position sensor harness connector.

2.

Turn ignition switch ON.

3.

Check the voltage between VVEL control shaft position sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 3.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1608

VVEL sensor power supply circuit

VVEL control module detects a voltage 
of power source for sensor is excessively 
low or high.

• Harness or connectors

(VVEL control shaft position sensor 
power supply circuit is open or shorted.)

• VVEL control shaft position sensor
• VVEL control module

VVEL control shaft position sensor

Ground

Voltage

Bank

Connector

Terminal

1

F46

3

Ground

Approx. 5V

6

2

F47

3

6

EC-452

< COMPONENT DIAGNOSIS >

[VQ37VHR]

P1608 VVEL SENSOR POWER SUPPLY

3.

CHECK VVEL CONTROL SHAFT POSITION SENSOR POWER SUPPLY CIRCUIT FOR OPEN AND

SHORT

1.

Turn ignition switch OFF.

2.

Disconnect VVEL control module harness connector.

3.

Check the continuity between VVEL control shaft position sensor harness connector and VVEL control
module harness connector.

4.

Also check harness for short to ground and power.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors F1, E3
• Harness for open or short between VVEL control shaft position sensor and VVEL control module

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

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-38, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace.

6.

REPLACE VVEL CONTROL MODULE

1.

Replace VVEL control module.

2.

Go to 

EC-17, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (VVEL CONTROL MOD-

ULE) : Special Repair Requirement"

.

>> INSPECTION END

7.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-38, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair or replace.

8.

REPLACE VVEL ACTUATOR SUB ASSEMBLY

1.

Replace VVEL actuator sub assembly.

2.

Go to 

EC-452, "Special Repair Requirement"

.

>> INSPECTION END

Special Repair Requirement

INFOID:0000000001910907

1.

PERFORM VVEL CONTROL SHAFT POSITION SENSOR ADJUSTMENT

VVEL control shaft position sensor

VVEL control module

Continuity

Bank

Connector

Terminal

Connector

Terminal

1

F46

3

E15

9

Existed

6

22

2

F47

3

7

6

20