Infiniti M35/M45 Y50. Manual — part 402

BASIC SERVICE PROCEDURE

EC-81

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

10.

CHECK IGNITION TIMING

1.

Run engine at idle.

2.

Check ignition timing with a timing light.
Refer to

EC-83, "IGNITION TIMING"

.

OK or NG

OK

>> GO TO 19.

NG

>> GO TO 11.

11.

PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING

1.

Stop engine.

2.

Perform

EC-86, "Accelerator Pedal Released Position Learning"

.

>> GO TO 12.

12.

PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Perform

EC-86, "Throttle Valve Closed Position Learning"

.

>> GO TO 13.

13.

PERFORM IDLE AIR VOLUME LEARNING

Refer to

EC-86, "Idle Air Volume Learning"

.

Is Idle Air Volume Learning carried out successfully?

Yes or No

Yes

>> GO TO 14.

No

>> 1. Follow the instruction of Idle Air Volume Learning.

2. GO TO 4.

15

±

5

°

BTDC (in P or N position)

PBIB1602E

EC-82

[VQ35DE]

BASIC SERVICE PROCEDURE

14.

CHECK TARGET IDLE SPEED AGAIN

With CONSULT-II

1.

Start engine and warm it up to normal operating temperature.

2.

Read idle speed in “DATA MONITOR” mode with CONSULT-II.
Refer to

EC-83, "IDLE SPEED"

.

Without CONSULT-II

1.

Start engine and warm it up to normal operating temperature.

2.

Check idle speed.
Refer to

EC-83, "IDLE SPEED"

.

OK or NG

OK

>> GO TO 15.

NG

>> GO TO 17.

15.

CHECK IGNITION TIMING AGAIN

1.

Run engine at idle.

2.

Check ignition timing with a timing light.
Refer to

EC-83, "IGNITION TIMING"

.

OK or NG

OK

>> GO TO 19.

NG

>> GO TO 16.

16.

CHECK TIMING CHAIN INSTALLATION

Check timing chain installation. Refer to

EM-66, "TIMING CHAIN"

.

OK or NG

OK

>> GO TO 17.

NG

>> 1. Repair the timing chain installation.

2. GO TO 4.

650

±

50 rpm (in P or N position)

SEF174Y

650

±

50 rpm (in P or N position)

15

±

5

°

BTDC (in P or N position)

PBIB1602E

BASIC SERVICE PROCEDURE

EC-83

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

17.

DETECT MALFUNCTIONING PART

Check the following.

●

Check camshaft position sensor (PHASE) and circuit. Refer to

EC-371, "DTC P0340, P0345 CMP SEN-

SOR (PHASE)"

.

●

Check crankshaft position sensor (POS) and circuit. Refer to

EC-364, "DTC P0335 CKP SENSOR (POS)"

.

OK or NG

OK

>> GO TO 18.

NG

>> 1. Repair or replace.

2. GO TO 4.

18.

CHECK ECM FUNCTION

1.

Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but
this is a rare case.)

2.

Perform initialization of IVIS (NATS) system and registration of all IVIS (NATS) ignition key IDs. Refer to

BL-248, "ECM Re-Communicating Function"

.

>> GO TO 4.

19.

INSPECTION END

Did you replace ECM, referring this Basic Inspection procedure?

Yes or No

Yes

>> 1. Perform

EC-85, "VIN Registration"

.

2. INSPECTION END

No

>> INSPECTION END

Idle Speed and Ignition Timing Check

NBS004SR

IDLE SPEED

With CONSULT-II

Check idle speed in “DATA MONITOR” mode with CONSULT-II.

With GST

Check idle speed with Service $01 GST.

IGNITION TIMING

Any of following two methods may be used.

SEF058Y

EC-84

[VQ35DE]

BASIC SERVICE PROCEDURE

Method A

1.

Attach timing light to loop wire as shown.

2.

Check ignition timing.

Method B

1.

Remove No. 1 ignition coil.

2.

Connect No. 1 ignition coil and No. 1 spark plug with suitable
high-tension wire as shown, and attach timing light clamp to this
wire.

PBIB1574E

PBIB1602E

PBIB1567E

PBIB1573E