2008 NISSAN LATIO ignition

COMBINATION SWITCH
LT-63
< SERVICE INFORMATION >
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Terminal and Reference Value for BCMINFOID:0000000001704434
Refer to BCS-11, "Terminal and Reference Value for BCM" .
CONSULT-III Function (BCM)INFOID:0000000001704435
Refer to LT- 11 , "CONSULT-III Function (BCM)" .
Combination Switch InspectionINFOID:0000000001704436
1.SYSTEM CHECK
Referring to table below, check which system malfunctioning switch belongs to.
>> Check the system to which the switch belongs, and GO TO 2.
2.SYSTEM CHECK
With CONSULT-III
CAUTION:
If CONSULT-III is used with no connection of CONSULT-III CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
1. Connect CONSULT-III, and select “COMB SW” on “SELECT TEST ITEM” screen.
2. Select “DATA MONITOR”.
3. Select “START”, and confirm that other switches in the system operate normally.
Example: When turn signal LH is inoperative, confirm that PASSING, HEAD LAMP 2 or FRONT FOG (if
equipped) turn ON-OFF normally.
Without CONSULT-III
Operating combination switch, and confirm that other switches in the system operate normally.
Example: When a turn signal switch is inoperative, confirm that FRONT WIPER LO or FRONT WIPER INT
turn ON-OFF normally.
Check results
Other switches in the system operate normally.>>Replace lighting switch or wiper switch.
Other switches in the system do not operate normally.>>GO TO 3.
3.HARNESS INSPECTION
1. Turn ignition switch OFF.
2. Disconnect BCM connector and combination switch connector.
3. Check for continuity between BCM harness connector of the suspect system and the corresponding com-
bination switch harness connector.
System 1 System 2 System 3 System 4 System 5
— FRONT WASHER FRONT WIPER LO TURN LH TURN RH
FRONT WIPER HI — FRONT WIPER INT PASSING HEAD LAMP 1
INT VOLUME 1 — — HEAD LAMP 2 HI BEAM
— INT VOLUME 3 — — LIGHT SW 1ST
INT VOLUME 2 — — FRONT FOG —

LT-64
< SERVICE INFORMATION >
COMBINATION SWITCH
4. Check for continuity between of BCM harness connector in suspect system and ground.
OK or NG
OK >> GO TO 4.
NG >> Check harness between BCM and combination switch for open or short circuit.
4.CHECK BCM OUTPUT TERMINAL
1. Connect BCM and combination switch connectors.
2. Turn ignition switch ON.
3. Turn lighting switch and wiper switch to OFF position.
4. Set wiper dial position 4.
5. Check BCM output terminal voltage waveform of suspect sys-
tem.
Suspect
systemAB
Continuity
Connector Terminal Connector Terminal
1
M18Input 1 6
M286
Ye s Output 1 36 1
2Input 2 5 7
Output 2 35 2
3Input 3 4 10
Output 3 34 3
4Input 4 3 9
Output 4 33 4
5Input 5 2 8
Output 5 32 5
Suspect
systemBCM
Continuity
Connector Terminal
1
M18Input 1 6
Ground No Output 1 36
2Input 2 5
Output 2 35
3Input 3 4
Output 3 34
4Input 4 3
Output 4 33
5Input 5 2
Output 5 32
WKIA5497E
WKIA5500E
PKIC1020E

LT-72
< SERVICE INFORMATION >
PARKING, LICENSE PLATE AND TAIL LAMPS
PARKING, LICENSE PLATE AND TAIL LAMPS
Component Parts and Harness Connector LocationINFOID:0000000001704447
System DescriptionINFOID:0000000001704448
The control of the parking, license plate and tail lamp operation is dependent upon the position of lighting
switch. When the lighting switch is placed in the 1ST position, the BCM (body control module) receives input
signal requesting the parking, license plate and tail lamps to illuminate. This input signal is communicated to
the IPDM E/R (intelligent power distribution module engine room) via the CAN communication lines. The CPU
(central processing unit) located in the IPDM E/R controls the tail lamp relay coil. This relay, when energized,
directs power to parking, license plate and tail lamps, which then illuminate.
Power is supplied at all times
• to ignition relay located in IPDM E/R,
• to tail lamp relay located in IPDM E/R,
• through 15A fuse (No. 52, located in IPDM E/R) and
• through 20A fuse (No. 53, located in IPDM E/R)
• to the CPU located in the IPDM E/R,
• through 40A fusible link (letter g , located in fuse and fusible link block)
• to BCM terminal 70,
• through 10A fuse [No. 8, located in fuse block (J/B)],
• to BCM terminal 57.
With the ignition switch in the ON or START position, power is supplied
• through 10A fuse [No. 6, located in fuse block (J/B)]
• to BCM terminal 38,
• to ignition relay located in IPDM E/R and
• through the ignition relay
• to the CPU of the IPDM E/R.
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
• through grounds M20 and M61,
• to IPDM E/R terminals 59 and 39
• through grounds E15 and E24.
OPERATION BY LIGHTING SWITCH
With the lighting switch in the 1ST or 2ND position, the BCM receives an input signal requesting parking,
license plate and tail lamps to illuminate. This input signal is communicated to the IPDM E/R via the CAN com-
munication lines. The CPU, located in the IPDM E/R, controls the tail lamp relay coil. When energized, the tail
lamp relay directs power
• through 10A fuse (No. 37, located in IPDM E/R),
• through IPDM E/R terminal 26
• to front combination lamp LH terminal 6, and
• through IPDM E/R terminal 27
1. IPDM E/R E45, E46 and E48 2. BCM M18 and M20 (view with glove
box removed)3. Combination switch (lighting switch)
M28
WKIA5554E

PARKING, LICENSE PLATE AND TAIL LAMPS
LT-73
< SERVICE INFORMATION >
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• to front combination lamp RH terminal 6,
• through IPDM E/R terminal 28
• to rear combination lamp LH terminal 4 and
• to license plate lamp LH and RH terminal 1,
• through IPDM E/R terminal 29
• to rear combination lamp RH terminal 4.
Ground is supplied
• to front combination lamp LH and RH terminal 7
• through grounds E15 and E24,
• to rear combination lamp LH terminal 1 and
• to license plate lamp LH and RH terminal 2
• through grounds B7 and B19, and
• to rear combination lamp RH terminal 1
• through grounds B117, B132 (all models) and D402 (with hatchback).
With power and ground supplied, parking, license plate and tail lamps illuminate.
COMBINATION SWITCH READING FUNCTION
Refer to BCS-3, "System Description" .
EXTERIOR LAMP BATTERY SAVER CONTROL
When the combination switch (lighting switch) is in the 1ST (or 2ND) position and the ignition switch is turned
from ON or ACC to OFF, the battery saver control feature is activated.
Under this condition, the parking, license and tail lamps remain illuminated for 5 minutes, then the parking,
license plate and tail lamps are turned off.
Exterior lamp battery saver control mode can be changed by the function setting of CONSULT-III.
CAN Communication System DescriptionINFOID:0000000001704449
Refer to LAN-6, "System Description" .

LT-80
< SERVICE INFORMATION >
PARKING, LICENSE PLATE AND TAIL LAMPS
1. Start auto active test. Refer to PG-19, "Auto Active Test" .
2. Make sure parking, license plate and tail lamps operate.
OK or NG
OK >> GO TO 4.
NG >> GO TO 5.
4.CHECK IPDM E/R
1. Select “IPDM E/R” on CONSULT-III, and select “DATA MONITOR” on “SELECT DIAG MODE” screen.
2. Make sure “TAIL&CLR REQ” turns ON when lighting switch is in 1ST position.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-26, "Removal and Installation of IPDM E/R" .
NG >> Replace BCM. Refer to BCS-18, "
Removal and Installation of BCM" .
5.CHECK INPUT SIGNAL
With CONSULT-III
1. Turn ignition switch OFF.
2. Disconnect front combination lamp, license plate lamp and rear combination lamp connectors.
3. Select “IPDM E/R” on CONSULT-III, and select “ACTIVE TEST” on “SELECT DIAG MODE” screen.
4. Select “EXTERNAL LAMPS” on “SELECT TEST ITEM” screen.
5. Touch “TAIL” on "ACTIVE TEST" screen.
6. When tail lamp relay is operating, check voltage between front combination lamp, license plate lamp and
rear combination lamp harness connector and ground.
Without CONSULT-III
1. Turn ignition switch OFF.
2. Disconnect front combination lamp, license plate lamp and rear combination lamp connectors.
3. Start auto active test. Refer to PG-19, "
Auto Active Test" .
4. When tail lamp relay is operating, check voltage between front combination lamp, license plate lamp and
rear combination lamp harness connector and ground.Parking, license plate and tail lamps should oper-
ate.
When lighting switch is 1ST
position: TAIL&CLR REQ ON
Te r m i n a l
Voltag e (+)
(−)
Front combination lamp
connectorTe r m i n a l
RH E54
6 Ground Battery voltage
LH E53
WKIA5502E
Te r m i n a l
Vo l ta g e (+)
(−)
License plate lamp connector Terminal
RHB17 (Hatchback)
B144 (Sedan)
1 Ground Battery voltage
LHB16 (Hatchback)
B143 (Sedan)
WKIA5503E

PARKING, LICENSE PLATE AND TAIL LAMPS
LT-81
< SERVICE INFORMATION >
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OK or NG
OK >> GO TO 7.
NG >> GO TO 6.
6.CHECK PARKING, LICENSE PLATE AND TAIL LAMP CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Check continuity between IPDM E/R harness connector (A) and
front combination lamp harness connector (B).
4. Check continuity between IPDM E/R harness connector (A) and
license plate lamp harness connector (B).
5. Check continuity between IPDM E/R harness connector (A) and
rear combination lamp harness connector (B).
OK or NG
OK >> Replace IPDM E/R. Refer to PG-26, "Removal and
Installation of IPDM E/R" .
NG >> Repair harness or connector.
7.CHECK PARKING, LICENSE PLATE AND TAIL LAMPS GROUND CIRCUIT
Te r m i n a l
Vo l ta g e (+)
(−) Rear combination lamp
connector
(Tail lamp)Te r m i n a l
RH B107
4 Ground Battery voltage
LH B25
P K I C 111 8 E
AB
Continuity
Connector Terminal Connector Terminal
E4527 RH E54
6Yes
26 LH E53
WKIA5505E
AB
Continuity
Connector Terminal Connector Terminal
E45 28RHB17 (Hatchback)
B144 (Sedan)
1Yes
LHB16 (Hatchback)
B143 (Sedan)
WKIA5506E
AB
Continuity
Connector Terminal Connector Terminal
E4529 RH B107
4Yes
28 LH B25
WKIA5508E

LT-82
< SERVICE INFORMATION >
PARKING, LICENSE PLATE AND TAIL LAMPS
1. Check continuity between front combination lamp harness con-
nector and ground.
2. Check continuity between license plate lamp harness connector
and ground.
3. Check continuity between rear combination lamp harness con-
nector and ground.
OK or NG
OK >> Check bulbs.
NG >> Repair harness or connector.
Parking, License Plate and Tail Lamps Do Not Turn OFF (After Approx. 10 Minutes)
INFOID:0000000001704459
• This symptom is related to the ignition relay in IPDM E/R. Refer to PG-17, "Function of Detecting Ignition
Relay Malfunction" .
• Select “BCM” on CONSULT-III. Select “HEADLAMP” on “SELECT TEST ITEM” screen and select “DATA
MONITOR” on “SELECT DIAG MODE” screen. If “LIGHT SW 1ST” is OFF when lighting switch is OFF,
replace IPDM E/R.
Bulb ReplacementINFOID:0000000001704460
PARKING LAMP
Refer to LT-85, "Bulb Replacement".
LICENSE PLATE LAMP
Hatchback
1. Remove the license plate lamp. Refer to LT-83, "Removal and Installation".
2. Turn bulb socket counterclockwise and unlock it.
3. Remove bulb from the socket.
4. Installation is in the reverse order of removal.
Sedan
1. Remove the trunk lid finisher. Refer to EI-30, "Removal and Installation".
Front combination lamp connector Terminal
GroundContinuity
RH E54
7Yes
LH E53
WKIA5509E
License plate lamp
connectorTe r m i n a l
GroundContinuity
RHB17 (Hatchback)
B144 (Sedan)
2 Yes
LHB16 (Hatchback)
B143 (Sedan)
WKIA5510E
Rear combination lamp
connectorTe r m i n a l
GroundContinuity
RH B107
1Yes
LH B25
PKIC1029E

INTERIOR ROOM LAMP
LT-89
< SERVICE INFORMATION >
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INTERIOR ROOM LAMP
Component Parts and Harness Connector LocationINFOID:0000000001704468
System DescriptionINFOID:0000000001704469
When room lamp switch is in DOOR position, room lamp ON/OFF is controlled by timer according to signals
from switches including key switch, front door switch LH, unlock signal from keyfob, door lock and unlock
switch, key cylinder lock and unlock switch, ignition switch.
When room lamp turns ON, there is a gradual brightening over 1 second.
When room lamp turns OFF, there is a gradual dimming over 1 second.
Interior room lamp timer is controlled by BCM (body control module).
Interior room lamp timer control settings can be changed with CONSULT-III.
POWER SUPPLY AND GROUND
Power is supplied at all times (without Intelligent Key system)
• through 10A fuse [No. 14, located in fuse block (J/B)]
• to key switch and key lock solenoid terminal 2,
• through 10A fuse [No. 8, located in fuse block (J/B)]
• to BCM terminal 57,
• through 40A fusible link (letter g , located in fuse and fusible link box)
• to BCM terminal 70.
Power is supplied at all times (with Intelligent Key system)
1. BCM M18, M19 and M20 (view with
glove box removed)2. Key switch and key lock solenoid
(without Intelligent Key) M273. Key switch and ignition knob switch
(with Intelligent Key) M73
4. Front door switch LH B8 and RH
B1085. Rear door switch LH B6 and RH
B1166. Front door key cylinder switch LH
D14
7. Back door lock assembly D405
(hatchback)8. Trunk lamp switch and trunk release
solenoid B127 (sedan)
LIIA2936E