Infiniti M35/M45 Y50. Manual - part 895

AUTO LIGHT SYSTEM

LT-125

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.

Combination
switch output 4

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

Lighting switch AUTO

Approx. 1.2 V

OFF

Approx. 7.0 - 7.5 V

Ignition switch

(ON)

—

Battery voltage

CAN

−

—

CAN

−

—

Battery power
supply

OFF

—

Battery voltage

Ground

—

Approx. 0 V

Battery power
supply

OFF

—

Battery voltage

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

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

LT-126

AUTO LIGHT SYSTEM

Terminals and Reference Values for IPDM E/R

NKS003Q6

How to Perform Trouble Diagnoses

NKS003Q7

Confirm the symptom or customer complaint.

Understand operation description and function description. Refer to

LT-115, "System Description"

Perform the Preliminary Check. Refer to

LT-127, "Preliminary Check"

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

LT-130, "Symptom Chart"

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

INSPECTION END.

Terminal

No.

Wire

color

Signal name

Measuring condition

Reference value

Ignition

switch

Operation or condition

20 R

Headlamp

low

(RH)

Lighting switch 2ND
position

OFF

Approx. 0 V

Battery voltage

R/L

Parking, license plate,
and tail lamp

Lighting switch 1ST
position

OFF

Approx. 0 V

Battery voltage

Headlamp high (RH)

Lighting switch HIGH
or PASSING position

OFF

Approx. 0 V

Battery voltage

R/Y

Headlamp high (LH)

Lighting switch HIGH
or PASSING position

OFF

Approx. 0 V

Battery voltage

30 R/B

Headlamp

low

(LH)

Lighting switch 2ND
position

OFF

Approx. 0 V

Battery voltage

Ground

—

Approx. 0 V

CAN

−

—

CAN

−

—

Ground

—

Approx. 0 V

AUTO LIGHT SYSTEM

LT-127

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

CHECK FUSE AND FUSIBLE LINK

Check for blown fuses and fusible link.

Refer to

LT-118, "Wiring Diagram — AUTO/L —"

OK or NG

>> GO TO 2.

>> 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"

CHECK POWER SUPPLY CIRCUIT

Turn ignition switch OFF.

Disconnect BCM connector.

Check voltage between BCM harness connector and ground.

OK or NG

>> GO TO 3.

>> Repair harness or connector.

Unit

Power source

Fuse and fusible link No.

BCM

Battery

Ignition switch ON or START position

Ignition switch ACC or ON position

IPDM E/R

Battery

Terminal

Ignition switch position

(+)

(-)

OFF

ACC

BCM

connector

Terminal

Ground

Approx.

0 V

Battery
voltage

Approx.

0 V

Approx.

0 V

Battery
voltage

PKIA5204E

LT-128

AUTO LIGHT SYSTEM

CHECK GROUND CIRCUIT

Check continuity between BCM harness connector and ground.

OK or NG

>> INSPECTION END

>> 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

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

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

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

Touch “START”.

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).

Touch “CHANGE SET”.

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

Touch “END”.

Work Support Setting Item

●

Customizing Auto Light Setting

NOTE:
Factory settings

BCM connector

Terminal

Ground

Continuity

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.)

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