2009 NISSAN LATIO low beam

CONSULT-III display Malfunction Reference page
CAN COMM CIRC [U1000] Malfunction is detected in CAN communication lines.
CAUTION:
Even when there is no malfunct ion on CAN communication system, mal-
function may be misinterpreted when battery has low voltage (when main-
taining 7 - 8 V for about 2 seconds) or 10A fuse [No. 14, located in the fuse
block (J/B)] is removed. DI-18VEHICLE SPEED CIRC [B2205]
Malfunction is detected when an erroneous speed signal is input.
CAUTION:
Even when there is no malfunction on speed signal system, malfunctions
may be misinterpreted when battery has low voltage (when maintaining 7
- 8 V for about 2 seconds). DI-15Display item [Unit]
MAIN
SIGNALS SELECTION
FROM MENU Contents
SPEED METER [km/h] X X The value of vehicle speed sign
al, which is input from ABS ac-
tuator and electric unit (control unit).
SPEED OUTPUT [km/h] X X The value of vehicle speed signal, which is transmitted to each
unit with CAN communication.
TACHO METER [rpm] X X The value of engine speed signal, which is input from ECM.
W TEMP METER [ °C] X X The value of engine coolant temperature signal, which is input
from ECM.
FUEL METER [lit.] X X The value, which processes a resistance signal from fuel
gauge.
DISTANCE [km] X X The value, which is calculated by vehicle speed signal from
ABS actuator and electric unit (con trol unit), fuel gauge and fuel
consumption signal from ECM.
FUEL W/L [ON/OFF] X X Indicates [ON/OFF] condition of low-fuel warning lamp.
C-ENG W/L [ON/OFF] X Indicates [ON/OFF] condition of malfunction indicator lamp
(MIL).
AIR PRES W/L X Indicates [ON/OFF] condition of low tire pressure warning lamp.
SEAT BELT W/L X Indicates [ON/OFF] condition of seat belt warning lamp.
BUZZER [ON/OFF] X X Indicates [ON/ OFF] condition of buzzer.
DOOR W/L [ON/OFF] X Indicates [ON/OFF] condition of door warning lamp.
HI-BEAM IND [ON/OFF] X Indicat es [ON/OFF] condition of high beam indicator lamp.

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Engine status signal T R
Fuel consumption monitor signal T R
Malfunction indicator lamp signal T R
Wide open throttle position signal T R R
A/C switch signal R T
Blower fan motor switch signal R T
Buzzer output signal T R
T R
Day time running light request signal *3
T R
Door lock/unlock status signal T R
Door switch signal T R R R
Front wiper request signal T R
High beam request signal T R R
Horn chirp signal T R
Ignition switch signal T R
Low beam request signal T R
Position lights request signal T R R
Rear window defogger switch signal T R
Sleep/wake up signal R T
T R R R
Theft warning horn request signal T R
Tire pressure signal *4
T R
Trunk open/close status signal T R
Turn indicator signal T R
EPS operation signal R T
EPS warning lamp signal T R
Door lock/unlock/trunk open request signal R T
Hazard request signal R T
Ignition knob switch signal R T
KEY warning lamp signal T R
LOCK warning lamp signal T R
Panic alarm request signal R T
Fuel level sensor signal R T
Overdrive control switch signal T R R
P/N range signal T R
Stop lamp switch signal T R R
Vehicle speed signal R R R R T
R R R T R
R*5
T*5
ABS warning lamp signal R T
Brake warning lamp signal R T
A/T check indicator signal R T Signal name/Connecting unitECM
BCM EPS
I-KEY
M&AABS
TCM *1
TCM *2
IPDM-E

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CONTENTS
LIGHTING SYSTEM
SERVICE INFORMATION .. ..........................3
PRECAUTIONS .............................................. .....3
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
3
Precaution Necessary fo r Steering Wheel Rota-
tion After Battery Disconnect ............................... ......
3
HEADLAMP (FOR USA) ................................ .....4
Component Parts and Harness Connector Loca-
tion ...................................................................... ......
4
System Description ............................................. ......4
CAN COMMUNICATION SYSTEM DESCRIP-
TION .................................................................... ......
5
Schematic ........................................................... ......6
Wiring Diagram ................................................... ......7
Terminal and Reference Value for BCM ............. ....10
Terminal and Reference Value for IPDM E/R ..... ....10
How to Perform Trouble Diagnosis ..................... ....11
Preliminary Check ............................................... ....11
CONSULT-III Function (BCM) ............................. ....11
CONSULT-III Function (IPDM E/R) ..................... ....12
Headlamp High Beam Does Not Illuminate (Both
Sides) .................................................................. ....
13
Headlamp High Beam Does Not Illuminate (One
Side) .................................................................... ....
15
High Beam Indicator Lamp Does Not Illuminate .....16
Headlamp Low Beam Does Not Illuminate (Both
Sides) .................................................................. ....
16
Headlamp Low Beam Does Not Illuminate (One
Side) .................................................................... ....
19
Headlamps Do Not Turn OFF ............................. ....20
Aiming Adjustment .............................................. ....21
Bulb Replacement ........ ...........................................22
Removal and Installation .........................................23
Disassembly and Assembly ................................ ....23
HEADLAMP (FOR CANADA) - DAYTIME
LIGHT SYSTEM - ........................................... ....25 Component Parts and Harness Connector Loca-
tion ....................................................................... ....
25

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• to BCM terminal 67
• to combination meter terminals 21, 22 and 23
• through grounds M57 and M61, and
• to IPDM E/R terminals 39 and 59
• through grounds E15 and E24.
HEADLAMP OPERATION
Low Beam Operation With the lighting switch in 2ND position, the BCM re ceives an input signal requesting the headlamps to illumi-
nate. The BCM then sends a signal, via the CAN comm unication lines, to the IPDM E/R requesting the low
beam headlamps be turned ON. The CPU located in the IPDM E/R controls ground to the headlamp low relay
coil, which when energized, directs power
• through 15A fuse (No. 41, located in IPDM E/R)
• through IPDM E/R terminal 54
• to headlamp RH terminal 3, and
• through 15A fuse (No. 40, located in IPDM E/R)
• through IPDM E/R terminal 52
• to headlamp LH terminal 3.
Ground is supplied
• to headlamp RH and LH terminals 2
• through grounds E15 and E24.
With power and ground supplied, low beam headlamps illuminate.
High Beam Operation/Flash-to-Pass Operation With the lighting switch in 2ND position and high beam s witch in the HIGH position, the BCM receives an input
signal requesting the headlamp high beams to illuminate. The flash to pass feature can be used any time and
also sends a signal to the BCM. This input signal is then communicated to the IPDM E/R and the combination
meter via the CAN communication. The CPU located in the IPDM E/R controls the headlamp high relays (LH
and RH), which when energized, directs power
• through 10A fuse (No. 34, located in IPDM E/R)
• through IPDM E/R terminal 56
• to headlamp RH terminal 1, and
• through 10A fuse (No. 35, located in IPDM E/R)
• through IPDM E/R terminal 55
• to headlamp LH terminal 1.
Ground is supplied
• to headlamp RH and LH terminal 2
• through grounds E15 and E24.
With power and ground supplied, the high beam headlamps illuminate.
The BCM sends a signal, via the CAN communication lines, to the combination meter requesting the high
beam indicator lamp be turned ON.
COMBINATION SWITCH READING FUNCTION Refer to BCS-3, " System Description " .
EXTERIOR LAMP BATTERY SAVER CONTROL Refer to LT-73, " System Description " .
CAN COMMUNICATION SYSTEM DESCRIPTION INFOID:0000000004306522
Refer to LAN-8 .

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How to Perform Trouble Diagnosis
INFOID:0000000004306527
1. Confirm the symptom or customer complaint.
2. Understand operation, description and function description. Refer to LT-4, " System Description " .
3. Perform the Preliminary Check. Refer to LT-11, " Preliminary Check " .
4. Check symptom and repair or replace the cause of the malfunction.
5. Do the headlamps operate normally? If YES, GO TO 6. If NO, GO TO 4.
6. INSPECTION END
Preliminary Check INFOID:0000000004306528
CHECK POWER SUPPLY AND GROUND CIRCUIT FOR BCM Refer to BCS-15, " BCM Power Supply and Ground Circuit Inspection " .
CHECK POWER SUPPLY AND GROUND CIRCUIT FOR IPDM E/R Refer to PG-26, " IPDM E/R Power/Ground Circuit Inspection " .
CONSULT-III Function (BCM) INFOID:0000000004306529
CONSULT-III can display each diagnostic item using the diagnostic test modes shown following.
WORK SUPPORT
Display Item List
DATA MONITOR
Display Item List BCM diagnostic
test item Diagnostic mode Description
Inspection by part WORK SUPPORT
Supports inspections and adjustments. Commands are transmitted to the BCM for
setting the status suitable for required operation, input/output signals are received
from the BCM and received data is displayed.
DATA MONITOR Displays BCM input/output data in real time. ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
SELF-DIAG RESULTS Displays BCM self-diagnosis results.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read. ECU PART NUMBER BCM part number can be read.
CONFIGURATION Performs BCM configuration read/write functions. Item Description CONSULT-III Factory setting
BATTERY SAVER SET Exterior lamp battery saver control mode can be changed
in this mode. Selects exterior lamp battery saver control
mode between ON/OFF. ON
×
OFF — Monitor item Contents
IGN ON SW "ON/OFF" Displays "IGN position (ON)/OFF, ACC position (OFF)" judged from the ignition switch signal.
ACC ON SW "ON/OFF" Displays "ACC (ON)/OFF, Ignition OFF (OFF)" status judged from ignition switch signal.
HI BEAM SW "ON/OFF" Displays status (high beam switch: ON/Others: OFF) of high beam switch judged from lighting
switch signal.
HEAD LAMP SW 1 "ON/OFF" Displays status (headlamp switch 1: ON/Others: OFF) of headlamp switch 2 judged from lighting
switch signal.
HEAD LAMP SW 2 "ON/OFF" Displays status (headlamp switch 2: ON/Others: OFF) of headlamp switch 2 judged from lighting
switch signal.

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NOTE:
Perform monitoring of IPDM E/R data with the ignition swit ch ON. When the ignition switch is at ACC, the dis-
play may not be correct.
ACTIVE TEST
Headlamp High Beam Does No t Illuminate (Both Sides) INFOID:0000000004306531Combination Switch Inspection " .
OK or NG OK >> GO TO 2.
NG >> Check combination switch (lighting switch). Refer to LT-63, " Combination Switch Inspection " .
Auto Active Test " .
2. Make sure headlamp high beam operates. Item name
CONSULT-III screen
display Display or
unit Monitor item selection
Description
ALL
SIGNALS MAIN
SIGNALS SELECTION
FROM MENU
Parking, license plate
and tail lamps request TAIL&CLR REQ ON/OFF
× × ×Signal status input from BCM
Headlamp low beam re-
quest HL LO REQ ON/OFF
× × × Signal status input from BCM
Headlamp high beam re-
quest HL HI REQ ON/OFF
× × × Signal status input from BCM
Front fog lamps request FR FOG REQ ON/OFF × × ×Signal status input from BCM
Daytime light request DTRL REQ ON/OFF x x x Signal status input from BCM Test item CONSULT-III screen display Description
Tail lamp relay output TAIL LAMP Allows tail lamp relay to operate by switching operation ON-OFF at your
option.
Headlamp relay (HI, LO) out-
put LAMPSAllows headlamp relay (HI, LO) to operate by switching operation (OFF,
HI, LO) at your option (Head lamp high beam repeats ON-OFF every 1
second).
Front fog lamp relay (FOG)
output Allows fog lamp relay (FOG) to operate by switching operation ON-OFF
at your option. Headlamp high beam should operate
(Headlamp high beam repeats ON–OFF every 2 sec-
onds).

LT-16< SERVICE INFORMATION >
HEADLAMP (FOR USA)
4. Check voltage between headlamp harness connector and ground.
OK or NG OK >> GO TO 4.
NG >> GO TO 5. 4.
CHECK HEADLAMP GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between headlamp harness connector and ground.
OK or NG OK >> Check connecting condition headlamp harness connec-
tor.
NG >> Repair harness or connector. 5.
CHECK HEADLAMP CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Check continuity between IPDM E/R harness connector (A) and
headlamp harness connector (B).
OK or NG OK >> Replace IPDM E/R. Refer to
PG-27, " Removal and
Installation of IPDM E/R " .
NG >> Repair harness or connector.
High Beam Indicator Lam p Does Not Illuminate INFOID:00000000043065331.
BULB INSPECTION
Inspect CAN communication system. Refer to LAN-8 .
OK or NG OK >> Replace combination meter. Refer to
DI-19, " Removal and Installation " .
NG >> Repair as necessary.
Headlamp Low Beam Does Not Illuminate (Both Sides) INFOID:00000000043065341.
CHECK COMBINATION SWITCH INPUT SIGNAL
With CONSULT-III
1. Select “BCM” on CONSULT-III. Select “HEAD LAMP” on “SELECT TEST ITEM” screen.
Terminal
Voltage
(+)
(− )
Headlamp connector Terminal
RH E26 1 Ground Battery voltage
LH E25 WKIA5552E
Headlamp connector Terminal
Ground Continuity
RH E26 2 Yes
LH E25 PKIC0961E
Circuit
A B
Continuity
Connector Terminal Connector Terminal
RH E47 56 E26
1 Yes
LH 55 E25 WKIA5470E

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2. Select “DATA MONITOR” on “SELECT DIAG MODE”
screen. Make sure that “HEAD LAMP SW 1” and
“HEAD LAMP SW 2” turns ON-OFF li nked with operation of lighting switch.
Without CONSULT-III
Refer to LT-63, " Combination Switch Inspection " .
OK or NG OK >> GO TO 2.
NG >> Check combination switch (lighting switch). Refer to LT-63, " Combination Switch Inspection " .
Auto Active Test " .
2. Make sure headlamp low beam operates.
OK or NG OK >> GO TO 3.
NG >> GO TO 4. OK >> Replace IPDM E/R. Refer to
PG-27, " Removal and Installation of IPDM E/R " .
NG >> Replace BCM. Refer to BCS-18, " Removal and Installation of BCM " .
OK >> GO TO 5.
NG >> Repair harness. OK >> GO TO 6.
NG >> Replace headlamp bulb. LT-22, " Bulb Replacement " .When lighting switch is 2ND
position : HL LO REQ ON