2007 NISSAN LATIO Lan system

LT-6
HEADLAMP (FOR USA)
Revision: June 20062007 Versa
With the ignition switch in the ACC or ON position, power is supplied

through 10A fuse [No. 20, located in fuse block (J/B)]

to BCM terminal 11.
Ground is supplied

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 receives an input signal requesting the headlamps to illumi-
nate. The BCM then sends a signal, via the CAN communication 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 switch 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, "COMBINATION SWITCH READING FUNCTION" .
EXTERIOR LAMP BATTERY SAVER CONTROL
Refer to LT- 7 6 , "EXTERIOR LAMP BATTERY SAVER CONTROL" .
CAN COMMUNICATION SYSTEM DESCRIPTIONEKS00HVD
Refer to LAN-4, "SYSTEM DESCRIPTION" .

LT-18
HEADLAMP (FOR USA)
Revision: June 20062007 Versa
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-29, "Removal and
Installation of IPDM E/R" .
NG >> Repair harness or connector.
High Beam Indicator Lamp Does Not IlluminateEKS00IW4
1. BULB INSPECTION
Inspect CAN communication system. Refer to LAN-44, "
TROUBLE DIAGNOSIS" .
OK or NG
OK >> Replace combination meter. Refer to DI-23, "Removal and Installation" .
NG >> Repair as necessary.
Headlamp Low Beam Does Not Illuminate (Both Sides)EKS00IMD
1. CHECK COMBINATION SWITCH INPUT SIGNAL
With CONSULT-II
1. Select “BCM” on CONSULT-II. Select “HEAD LAMP” on
“SELECT TEST ITEM” screen.
2. Select “DATA MONITOR” on “SELECT DIAG MODE” screen.
Make sure that “HEAD LAMP SW 1” and “HEAD LAMP SW 2”
turns ON-OFF linked with operation of lighting switch.
Without CONSULT-II
Refer to LT- 6 8 , "
Combination Switch Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Check combination switch (lighting switch). Refer to LT- 6 8 , "
Combination Switch Inspection" .
Headlamp connector Terminal
Ground Continuity
RH E26
2Yes
LH E25
PKIC0961E
CircuitAB
Continuity
Connector Terminal Connector Terminal
RH
E47 56 E26
1Yes
LH 55 E25
WKIA5470E
When lighting switch is 2ND
position: HEAD LAMP SW 1 ON
: HEAD LAMP SW 2 ON
PKIA7586E

HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -
LT-29
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to front combination lamp RH terminal 2 via

daytime light relay 1 terminals 3 and 4

through grounds E15 and E24.
With power and ground supplied, the high beam headlamps illuminate.
The BCM sends a signal to the combination meter requesting the high beam indicator lamp to turn ON.
Daytime Light System Operation
With the lighting switch in the OFF or 1ST position (parking lamps ON), the BCM receives inputs requesting
the headlights off. If the parking brake is released and the engine is running, the BCM then sends a signal, via
the CAN communication lines, requesting the IPDM E/R to activate the daytime light system. The CPU located
in the IPDM E/R controls the daytime light relay 1 coil, which when energized, directs power

from daytime light relay 1 terminal 3

to front combination lamp RH terminal 2,

through front combination lamp RH high beam terminal 1

to IPDM E/R terminal 56,

through 10A fuse (No. 34, located in IPDM E/R) and

through both de-energized headlamp high relays

to 10A fuse (No. 35, located in IPDM E/R),

through IPDM E/R terminal 55

to front combination lamp LH terminal high beam 1.
Ground is supplied

to front combination lamp LH terminal 2

through grounds E15 and E24,

to daytime light relay 1 terminal 1

through IPDM E/R terminal 6.
With power and ground supplied, high beam headlamps illuminate at reduced intensity.
COMBINATION SWITCH READING FUNCTION
Refer to BCS-3, "COMBINATION SWITCH READING FUNCTION" .
EXTERIOR LAMP BATTERY SAVER CONTROL
Refer to LT- 7 6 , "EXTERIOR LAMP BATTERY SAVER CONTROL" .
CAN Communication System DescriptionEKS00ICF
Refer to LAN-4, "CAN Communication System" .

LT-36
HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -
Revision: June 20062007 Versa
2. CHECK DAYTIME LIGHT RELAY 1 POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Remove daytime light relay 1.
3. Check voltage between daytime light relay 1 harness connector
E37 terminals 2, 5 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3. CHECK DAYTIME LIGHT RELAY 1
1. Apply battery voltage to daytime light relay 1 terminal 2 and supply ground to terminal 1.
2. Check continuity between terminals 3 and 5.
OK or NG
OK >> GO TO 4.
NG >> Replace daytime light relay 1.
4. CHECK INPUT SIGNAL
1. Connect daytime light relay 1.
2. Start engine and release parking brake. Headlamp switch OFF.
3. Select "IPDM E/R" on CONSULT-II. With DATA MONITOR,
make sure "DTRL REQ" turns ON-OFF linked with operation of
parking brake switch.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5. CHECKING CAN COMMUNICATIONS
Select "BCM" on CONSULT-II and perform self-diagnosis for BCM.
Displayed self-diagnosis results
NO DTC>>Replace BCM. Refer to BCS-25, "Removal and Installa-
tion of BCM" .
CAN COMM CIRCUIT>> Check BCM CAN communication system.
Refer to LAN-44, "
TROUBLE DIAGNOSIS" . 2, 5 - Ground : Battery voltage should exist.
WKIA3305E
3 - 5 : Continuity should exist.
WIIA0291E
Parking brake ON : DTRL REQ ON
Parking brake OFF : DTRL REQ OFF
WKIA1449E
SKIA1039E

HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -
LT-37
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6. CHECK DAYTIME LIGHT RELAY 1 CONTROL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect daytime light relay 1 connector E37.
3. Disconnect IPDM E/R connector E43.
4. Check continuity between IPDM E/R connector E43 (A) terminal
6 and daytime light relay 1 connector E37 (B) terminal 1.
OK or NG
OK >> Replace the IPDM E/R. Refer to PG-29, "Removal and
Installation of IPDM E/R" .
NG >> Repair harness or connector.
Aiming AdjustmentEKS00IM4
PREPARATION BEFORE ADJUSTING
Before performing aiming adjustment, check the following.
1. Keep all tires inflated to correct pressures.
2. Place vehicle on level surface.
3. Set that there is no-load in vehicle other than the driver (or equivalent weight placed in driver's position).
Coolant, engine oil filled up to correct level and full fuel tank.
LOW BEAM AND HIGH BEAM
1. Turn headlamp low beam ON.
2. Use adjusting screw to perform aiming adjustment.
A B Continuity
Connector Terminal Connector Terminal
Ye s
E43 6 E37 1
WKIA5553E
1. Headlamp A. Inner and outer adjustment B. Adjusting screw
WKIA5417E

LT-42
FRONT FOG LAMP
Revision: June 20062007 Versa
FOG LAMP OPERATION
The front fog lamp switch is built into the lighting switch. The lighting switch must be in 1ST position or 2ND
position and front fog lamp switch must be ON position for front fog lamp operation. The fog lamp will not oper-
ate with the high beam headlamps ON.
When the front fog lamp switch is in the ON position, the BCM sends a request, via the CAN communication
lines, to the CPU of the IPDM E/R to ground the coil side of the front fog lamp relay. The front fog lamp relay
then directs power

through 15A fuse (No. 56, located in IPDM E/R)

through IPDM E/R terminal 50

to front fog lamp LH terminal 1, and

through IPDM E/R terminal 51

to front fog lamp RH terminal 1.
Ground is supplied

to front fog lamp terminal 2,

through grounds E15 and E24.
With power and grounds supplied, front fog lamps illuminate.
COMBINATION SWITCH READING FUNCTION
Refer to BCS-3, "COMBINATION SWITCH READING FUNCTION" .
EXTERIOR LAMP BATTERY SAVER CONTROL
Refer to LT- 7 6 , "EXTERIOR LAMP BATTERY SAVER CONTROL" .
CAN Communication System DescriptionEKS00HX7
Refer to LAN-4, "CAN Communication System" .

TURN SIGNAL AND HAZARD WARNING LAMPS
LT-53
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to rear combination lamp LH terminal 1

through grounds B7 and B19,

to rear combination lamp RH terminal 1

through grounds B117, B132 and D402.
The BCM also supplies input to combination meter across the CAN communication lines. This input is pro-
cessed by unified meter control unit in combination meter, which in turn supplies ground to the left and right
turn signal indicator lamps.
With power and input supplied, BCM controls flashing of hazard warning lamps.
REMOTE KEYLESS ENTRY SYSTEM OPERATION
Power is supplied at all times

through 40A fusible link (letter g , located in fuse, fusible link and relay box)

to BCM terminal 70,

through 10A fuse [No. 13, located in fuse block (J/B)]

to combination meter terminal 27.
Ground is supplied

to BCM terminal 67 and

to combination meter terminals 21, 22 and 23

through grounds M57 and M61.
When the remote keyless entry system is triggered by input from the keyfob, the BCM supplies power

through BCM terminal 60

to front combination lamp LH terminal 4 and

to rear combination lamp LH terminal 6,

through BCM terminal 61

to front turn signal lamp RH terminal 4 and

to rear combination lamp RH terminal 6.
Ground is supplied

to front combination lamp LH and RH terminals 5

through grounds E15 and E24,

to rear combination lamp LH terminal 1

through grounds B7 and B19,

to rear combination lamp RH terminal 1

through grounds B117, B132 and D402.
The BCM also supplies input to combination meter via the CAN communication lines. This input is processed
by the unified meter control unit in combination meter, which in turn supplies ground to the left and right turn
signal indicator lamps.
With power and ground supplied, BCM controls flashing of hazard warning lamps when keyfob is used to acti-
vate remote keyless entry system.
COMBINATION SWITCH READING FUNCTION
Refer toBCS-3, "COMBINATION SWITCH READING FUNCTION" .
CAN Communication System DescriptionEKS00HY1
Refer to LAN-4, "CAN Communication System" .

TURN SIGNAL AND HAZARD WARNING LAMPS
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3. CHECK GROUND CIRCUIT
Check continuity between hazard switch harness connector M55 ter-
minal 1 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
4. CHECK HAZARD SWITCH
1. Disconnect hazard switch connector.
2. Check continuity hazard switch terminals.
OK or NG
OK >> Replace BCM if hazard warning lamps do not operate
after setting the connector again. Refer to BCS-25,
"Removal and Installation of BCM" .
NG >> Replace hazard switch.
Turn Signal Indicator Lamp Does Not OperateEKS00J8H
1. CHECK CAN COMMUNICATION SYSTEM
Check CAN communication. Refer to LAN-44, "
TROUBLE DIAGNOSIS" .
OK or NG
OK >> Replace combination meter. Refer to DI-23, "Removal and Installation" .
NG >> Repair as necessary.1 – Ground : Continuity should exist.
PKIC1016E
Te r m i n a l
Condition Continuity
Hazard switch
12Hazard switch is ON Yes
Hazard switch is OFF No
PKIC1017E