Infiniti M35/M45 Y50. Manual — part 895

AUTO LIGHT SYSTEM

LT-125

C

D

E

F

G

H

I

J

L

M

A

B

LT

NOTE:
Optical sensor must be securely subjected to work lamp light. If the optical sensor is insufficiently illuminated, the measured value may
not satisfy standard.

33

GR

Combination
switch output 4

ON

Lighting, turn, wiper
OFF
(Wiper dial position 4)

Lighting switch AUTO

Approx. 1.2 V

OFF

Approx. 7.0 - 7.5 V

38

W

Ignition switch

(ON)

ON

—

Battery voltage

39

L

CAN

−

H

—

—

—

40

P

CAN

−

L

—

—

—

42

P

Battery power
supply

OFF

—

Battery voltage

52

B

Ground

ON

—

Approx. 0 V

55

W

Battery power
supply

OFF

—

Battery voltage

62

V

Front door switch
driver side signal

OFF

Front door switch
driver side

ON (open)

Approx. 0 V

OFF (closed)

Approx. 7.5 - 8.0 V

63

R/G

Rear door switch
LH signal

OFF

Rear door switch LH

ON (open)

Approx. 0V

OFF (closed)

Approx. 7.5 - 8.0 V

Terminal

No.

Wire

color

Signal name

Measuring condition

Reference value

Ignition

switch

Operation or condition

PKIB4958J

PKIB4960J

PKIB4960J

PKIB4960J

LT-126

AUTO LIGHT SYSTEM

Terminals and Reference Values for IPDM E/R

NKS003Q6

How to Perform Trouble Diagnoses

NKS003Q7

1.

Confirm the symptom or customer complaint.

2.

Understand operation description and function description. Refer to

LT-115, "System Description"

.

3.

Perform the Preliminary Check. Refer to

LT-127, "Preliminary Check"

.

4.

Check symptom and repair or replace the cause of malfunction. Refer to

LT-130, "Symptom Chart"

.

5.

Does the auto light system operate normally? If YES, GO TO 6. If NO, GO TO 4.

6.

INSPECTION END.

Terminal

No.

Wire

color

Signal name

Measuring condition

Reference value

Ignition

switch

Operation or condition

20 R

Headlamp

low

(RH)

ON

Lighting switch 2ND
position

OFF

Approx. 0 V

ON

Battery voltage

21

R/L

Parking, license plate,
and tail lamp

ON

Lighting switch 1ST
position

OFF

Approx. 0 V

ON

Battery voltage

27

BR

Headlamp high (RH)

ON

Lighting switch HIGH
or PASSING position

OFF

Approx. 0 V

ON

Battery voltage

28

R/Y

Headlamp high (LH)

ON

Lighting switch HIGH
or PASSING position

OFF

Approx. 0 V

ON

Battery voltage

30 R/B

Headlamp

low

(LH)

ON

Lighting switch 2ND
position

OFF

Approx. 0 V

ON

Battery voltage

38

B

Ground

ON

—

Approx. 0 V

49

L

CAN

−

H

—

—

—

50

P

CAN

−

L

—

—

—

51

B

Ground

ON

—

Approx. 0 V

AUTO LIGHT SYSTEM

LT-127

C

D

E

F

G

H

I

J

L

M

A

B

LT

Preliminary Check

NKS003Q8

SETTING CHANGE FUNCTIONS

●

Sensitivity of auto light system can be adjusted using CONSULT-II. Refer to

LT-128, "WORK SUPPORT"

.

CHECK POWER SUPPLY AND GROUND CIRCUIT

1.

CHECK FUSE AND FUSIBLE LINK

Check for blown fuses and fusible link.

Refer to

LT-118, "Wiring Diagram — AUTO/L —"

.

OK or NG

OK

>> GO TO 2.

NG

>> If fuse or fusible link is blown, be sure to eliminate cause of malfunction before installing new fuse

or fusible link. Refer to

PG-3, "POWER SUPPLY ROUTING CIRCUIT"

.

2.

CHECK POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect BCM connector.

3.

Check voltage between BCM harness connector and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair harness or connector.

Unit

Power source

Fuse and fusible link No.

BCM

Battery

F

21

Ignition switch ON or START position

1

Ignition switch ACC or ON position

6

IPDM E/R

Battery

71

72

74

76

78

86

Terminal

Ignition switch position

(+)

(-)

OFF

ACC

ON

BCM

connector

Terminal

M1

11

Ground

Approx.

0 V

Battery
voltage

Battery
voltage

38

Approx.

0 V

Approx.

0 V

Battery
voltage

M2

42

Battery
voltage

Battery
voltage

Battery
voltage

55

Battery
voltage

Battery
voltage

Battery
voltage

PKIA5204E

LT-128

AUTO LIGHT SYSTEM

3.

CHECK GROUND CIRCUIT

Check continuity between BCM harness connector and ground.

OK or NG

OK

>> INSPECTION END

NG

>> Repair harness or connector.

CONSULT-II Functions (BCM)

NKS003Q9

CONSULT-II can display each diagnostic item using the diagnostic test mode shown following.

CONSULT-II BASIC OPERATION

Refer to

GI-38, "CONSULT-II Start Procedure"

.

WORK SUPPORT
Operation Procedure

1.

Touch “HEAD LAMP” on “SELECT TEST ITEM” screen.

2.

Touch “WORK SUPPORT” on “SELECT DIAG MODE” screen.

3.

Touch “CUSTOM A/LIGHT SETTING” or “ILL DELAY SET” on “SELECT WORK ITEM” screen.

4.

Touch “START”.

5.

Touch “MODE 1 - 4” of setting to be changed (CUSTOM A/LIGHT SETTING), Touch “MODE 1 - 8” of set-
ting to be changed (ILL DELAY SET).

6.

Touch “CHANGE SET”.

7.

The setting will be changed and “CUSTOMIZING COMPLETED” will be displayed.

8.

Touch “END”.

Work Support Setting Item

●

Customizing Auto Light Setting

NOTE:
Factory settings

BCM connector

Terminal

Ground

Continuity

M2

52

Yes

SKIB5125E

BCM diagnosis part

Diagnosis mode

Description

HEADLAMP

WORK SUPPORT

Changes the setting for each function.

DATA MONITOR

Displays BCM input data in real time.

ACTIVE TEST

Operation of electrical loads can be checked by sending drive signal to them.

BCM

SELF-DIAG RESULTS

BCM performs self-diagnosis of CAN communication.

CAN DIAG SUPPORT MNTR

The result of transmit/receive diagnosis of CAN communication can be read.

Work item

Description

CUSTOM A/LIGHT SETTING

Auto light sensitivity can be changed in this mode. Sensitivity can be adjusted in four modes.

●

Mode 1 (Factory settings)/Mode 2 (More sensitive Mode 1)/
Mode 3 (More sensitive than Mode 2)/Mode 4 (Less sensitive than Mode 1)

ILL DELAY SET

Auto light delay off timer period can be changed in this mode. Selects Auto light delay off timer
period among eight modes.

●

Mode 1 (45 sec.)

NOTE

/Mode 2 (OFF)/Mode 3 (30 sec.)/Mode 4 (60 sec.)/

Mode 5 (90 sec.)/Mode 6 (120 sec.)/Mode 7 (150 sec.)/Mode 8 (180 sec.)