Infiniti G37 Coupe. Manual - part 546

P100A, P100B VVEL SYSTEM

EC-365

< COMPONENT DIAGNOSIS >

[VQ37VHR]

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P100A, P100B VVEL SYSTEM

DTC Logic

INFOID:0000000001830767

DTC DETECTION LOGIC

NOTE:
If DTC P100A or P100B is displayed with DTC P1090 or P1093, first perform the trouble diagnosis for DTC
P1090 or P1093. Refer to 

EC-378, "DTC 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.

2.

Depress the accelerator pedal rapidly half or more under no load and then release it.

3.

Wait at idle for 5 seconds or more.

4.

Repeat steps 2 to 3 for three times.

5.

Check 1st trip DTC.

Is DTC detected?

YES

>> Go to 

EC-365, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000001830768

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 ACTUATOR MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Disconnect VVEL control module harness connector.

2.

Disconnect VVEL actuator motor harness connector.

3.

Check the continuity between VVEL control module harness connector and VVEL actuator motor harness
connector.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P100A

VVEL response malfunction (bank 1)

Actual event response to target is 
poor.

• Harness or connectors

(VVEL actuator motor circuit is 
open or shorted.)

• VVEL actuator motor
• VVEL actuator sub assembly
• VVEL ladder assembly
• VVEL control module

P100B

VVEL response malfunction (bank 2)

EC-366

< COMPONENT DIAGNOSIS >

[VQ37VHR]

P100A, P100B VVEL SYSTEM

4.

Also check harness for short to ground and power.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors F1, E3
• Harness for open or short between VVEL actuator motor and VVEL control module

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

4.

CHECK VVEL ACTUATOR MOTOR

Refer to 

EC-367, "Component Inspection (VVEL ACTUATOR MOTOR)"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 5.

5.

REPLACE VVEL ACTUATOR SUB ASSEMBLY

1.

Replace VVEL actuator sub assembly.

2.

Go to 

EC-368, "Special Repair Requirement"

.

>> INSPECTION END

6.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-38, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace.

7.

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"

.

>> GO TO 8.

8.

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.

DTC No.

VVEL control module

VVEL actuator motor

Continuity

Bank

Connector

Terminal

Connector

Terminal

P100A

1

E15

12

F48

1

Existed

2

Not existed

25

1

Not existed

2

Existed

P100B

2

2

F49

1

Existed

2

Not existed

15

1

Not existed

2

Existed

P100A, P100B VVEL SYSTEM

EC-367

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See 

EC-365, "DTC Logic"

.

 With GST

1.

Turn ignition switch ON.

2.

Select Service $04 with GST.

3.

Perform DTC Confirmation Procedure.
See 

EC-365, "DTC Logic"

.

Is the DTC P100A or P100B displayed again?

YES

>> GO TO 9.

NO

>> INSPECTION END

9.

CHECK VVEL ACTUATOR SUB ASSEMBLY

Refer to 

EC-368, "Component Inspection (VVEL ACTUATOR SUB ASSEMBLY)"

.

Is the inspection result normal?

YES

>> GO TO 11.

NO

>> GO TO 10.

10.

REPLACE VVEL ACTUATOR SUB ASSEMBLY

1.

Replace VVEL actuator sub assembly.

2.

Go to 

EC-368, "Special Repair Requirement"

.

>> INSPECTION END

11.

CHECK VVEL LADDER ASSEMBLY

Refer to 

EM-93, "Inspection"

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Is the inspection result normal?

YES

>> GO TO 13.

NO

>> GO TO 12.

12.

REPLACE CYLINDER HEAD, VVEL LADDER ASSEMBLY AND VVEL ACTUATOR SUB ASSEMBLY

1.

Replace cylinder head, VVEL ladder assembly and VVEL actuator sub assembly.

2.

Go to 

EC-368, "Special Repair Requirement"

.

>> INSPECTION END

13.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-38, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection (VVEL ACTUATOR MOTOR)

INFOID:0000000001830770

1.

CHECK VVEL ACTUATOR MOTOR

1.

Turn ignition switch OFF.

2.

Disconnect VVEL actuator motor harness connector.

3.

Check resistance between VVEL actuator motor terminals as follows.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

REPLACE VVEL ACTUATOR SUB ASSEMBLY

1.

Replace VVEL actuator sub assembly.

2.

Go to 

EC-368, "Special Repair Requirement"

.

VVEL actuator motor

Resistance

Terminal

1 and 2

16

Ω

 or less

EC-368

< COMPONENT DIAGNOSIS >

[VQ37VHR]

P100A, P100B VVEL SYSTEM

>> INSPECTION END

Component Inspection (VVEL ACTUATOR SUB ASSEMBLY)

INFOID:0000000001830771

1.

CHECK VVEL ACTUATOR SUB ASSEMBLY

1.

Turn ignition switch OFF.

2.

Remove VVEL actuator sub assembly. Refer to 

EM-84, "Disassembly and Assembly"

.

3.

Turn the ball screw shaft to check that it works smoothly.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

REPLACE VVEL ACTUATOR SUB ASSEMBLY

1.

Replace VVEL actuator sub assembly.

2.

Go to 

EC-368, "Special Repair Requirement"

.

>> INSPECTION END

Special Repair Requirement

INFOID:0000000001830773

1.

PERFORM VVEL CONTROL SHAFT POSITION SENSOR ADJUSTMENT

Refer to 

EC-21, "VVEL CONTROL SHAFT POSITION SENSOR ADJUSTMENT : Special Repair Require-

ment"

.

>> GO TO 2.

2.

PERFORM IDLE AIR VOLUME LEARNING

Refer to 

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

.

>> END