Auto Light System: Other Nissan Titan I

OUTLINE

The auto light control system uses an optical sensor that detects outside brightness.

When the lighting switch is in "AUTO" position, it automatically turns on/off the parking lamps and the headlamps in accordance with the ambient light. Sensitivity can be adjusted in four steps. For the details of the setting, refer to , " SETTING CHANGE FUNCTIONS".

Optical sensor ground is supplied

1. from BCM (body control module) terminal 18
2. to optical sensor terminal 3.

When ignition switch is turned to "ON" position and when outside brightness is darker than prescribed level, input is supplied

1. to BCM (body control module) terminal 58
2. from optical sensor terminal 4.

The headlamps will then illuminate. For a description of headlamp operation, refer to SYSTEM DESCRIPTION

COMBINATION SWITCH READING FUNCTION

Refer to COMBINATION SWITCH READING FUNCTION

EXTERIOR LAMP BATTERY SAVER CONTROL

When the combination switch (lighting switch) is in the AUTO position, and the ignition switch is turned from ON or ACC to OFF, and one of the front doors is opened, the battery saver control feature is activated. Under this condition, the headlamps remain illuminated for 5 minutes, then the headlamps are turned off. Exterior lamp battery saver control mode can be changed by the function setting of CONSULT-II.

DELAY TIMER FUNCTION

When the ignition switch is ON and ACC is OFF while auto light switch is ON, the BCM turns on/off the headlamps. In delay timer function, auto timer sensor power source is OFF and BCM is not turned on/off by auto sensor signal. On condition that

1. when the state is ignition switch ON or ACC is ON and output judgment by auto light function is headlamp ON turn to ignition switch ON or ACC are OFF and front door switch (driver side), front door switch (passenger side) is ON, output judgment by auto light function should be headlamp ON for 5 minutes by timer. After time out, output judgment by auto light function should be headlamp OFF.
2. when the state is front door switch (driver side), front door switch (passenger side), rear door switch LH or rear door switch RH is turned to ON from OFF 45 seconds or 5 minutes while timer is counting, timer stops, and re-starts counting for 5 minutes, then auto light function judges output as headlamp ON. After time out, auto light function judges output as headlamp OFF.
3. when the state is front door switch (driver side), front door switch (passenger side), rear door switch LH or rear door switch RH is ON turns to front door switch (driver side), front door switch (passenger side), rear door switch LH or rear door switch RH are OFF 45 seconds or 5 minute while timer is counting, timer stops, and re-starts counting for 45 seconds, then auto light function judges output as headlamp ON. After time out, auto light function judges output as headlamp OFF.
4. when the state is ignition switch ON or ACC is ON or auto light switch OFF while timer is counting, timer stops counting and BCM turns on/off lamps according to headlamp function, front fog lamp function, auto light function and headlamp battery save function.

Delay timer control mode can be changed by the function setting of CONSULT-II.

Major Components and Functions

MAJOR COMPONENTS AND FUNCTIONS

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

Terminals and Reference Values for IPDM E/R

TERMINALS AND REFERENCE VALUES FOR IPDM E/R

SETTING CHANGE FUNCTIONS

1. Sensitivity of auto light system can be adjusted using CONSULT-II. Refer to , " «WORK SUPPORT»(ref-215123-S00615206502006011000000) ".

CHECK BCM CONFIGURATION

1. CHECK BCM CONFIGURATION Confirm BCM configuration for "AUTO LIGHT" is set to "WITH". Refer to «READ CONFIGURATION PROCEDURE»(ref-170228-S11309896812005010600000) . OK or NG OK: Continue preliminary check. Refer to , " «CHECK POWER SUPPLY AND GROUND CIRCUIT»(ref-215123-S05530531822006011000000) ". NG: Change BCM configuration for "AUTO LIGHT" to "WITH". Refer to «WRITE CONFIGURATION PROCEDURE»(ref-170228-S25787254222005010600000) .

Scheme 78

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1. CHECK FUSES OR FUSIBLE LINK Check for blown-out fuses or fusible link. POWER SOURCE UNIT SPECIFICATION Unit Power source Fuse No. BCM Battery f Ignition switch ON or START position 59 IPDM E/R Battery 34 35 40 41 53 Refer to , " «WIRING DIAGRAM --- AUTO/L»(ref-215123-S36666916742006011000000) ". OK or NG OK: GO TO 2. NG: If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to «POWER DISTRIBUTION»(ref-166656-S24551469312004092400000) .
2. POWER SUPPLY CIRCUIT Disconnect BCM connector. Check voltage between BCM harness connector and ground. TERMINALS CONDITION SPECIFICATION Terminals Ignition switch position (+) (-) OFF ACC ON Connector Terminal (Wire color) M18 38 (W/L) Ground 0 V 0 V Battery voltage M20 70 (W/B) Battery voltage Battery voltage Battery voltage OK or NG OK: GO TO 3. NG: Check harness for open between BCM and fuse.
3. CHECK GROUND CIRCUIT Check continuity between BCM harness connector and ground. TERMINALS CONDITION SPECIFICATION Terminals Continuity (+) (-) Connector Terminal (Wire color) M20 67 (B) Ground Yes OK or NG OK: INSPECTION END. NG: Check ground circuit harness.

CONSULT-II Function (BCM)

1. CONSULT-II executes the following functions by combining data reception and command transmission via the communication line from BCM. Work support, self-diagnosis, data monitor, and active test display.

BCM DIAGNOSIS PART SPECIFICATION

Work Support Setting Item

1. Sensitivity of auto light can be selected and set from four modes.

WORK SUPPORT SETTING ITEM

Display Item List

DISPLAY ITEM LIST

DISPLAY ITEM LIST

DISPLAY ITEM LIST

CONSULT-II Functions (IPDM E/R)

CONSULT-II can display each diagnostic item using the following diagnostic test modes: work support, self-diagnostic results, data monitor and active test through data reception and command transmission via the IPDM E/R CAN communication line.

ITEM DESCRIPTION CHART

All Items, Main Items, Select Item Menu

MAIN SIGNALS SPECIFICATION

Note. Perform monitoring of IPDM E/R data with the ignition switch ON. When the ignition switch is at ACC, the display may not be correct.