2008 NISSAN LATIO ignition

LT-34
< SERVICE INFORMATION >
HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -
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. Apply parking brake and start engine. Headlamp switch OFF.
3. Select "IPDM E/R" on CONSULT-III. With DATA MONITOR, make sure "DTRL REQ" turns OFF-ON 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-III and perform self-diagnosis for BCM.
Displayed self-diagnosis results
NO DTC>>Replace BCM. Refer to BCS-18, "Removal and Installation of BCM" .
CAN COMM CIRCUIT>> Check BCM CAN communication system. Refer to LAN-15, "
Trouble Diagnosis
Flow Chart" .
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-26, "Removal and
Installation of IPDM E/R" .
NG >> Repair harness or connector. 3 - 5 : Continuity should exist.
WIIA0291E
Parking brake ON : DTRL REQ OFF
Parking brake OFF : DTRL REQ ON
ABContinuity
Connector Terminal Connector Terminal
Ye s
E43 6 E37 1
WKIA5553E

FRONT FOG LAMP
LT-39
< SERVICE INFORMATION >
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FRONT FOG LAMP
Component Parts and Harness Connector LocationINFOID:0000000001704397
System DescriptionINFOID:0000000001704398
The front fog lamps are controlled by lighting switch inputs to the BCM (body control module). The lighting
switch must be in the 1ST or 2ND position with the high beams OFF before the BCM will request the IPDM E/
R (intelligent power distribution module engine room) to turn the front fog lamps on. The BCM requests the
front fog lamps over the CAN communication lines to the IPDM E/R. The CPU (central processing unit) of the
IPDM E/R controls the front fog lamp relay coil ground. When energized, the relay directs power to the front
fog lamps.
OUTLINE
Power is supplied at all times:
• to front fog lamp relay (located in IPDM E/R),
• to ignition 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 CPU located in IPDM E/R,
• through 40A fusible link (letter g , located in the fuse and fusible link box)
• to BCM terminal 70,
• through 10A fuse [No. 8, located in fuse block (J/B)]
• to BCM terminal 57,
• through 10A fuse [No. 13, located in fuse block (J/B)]
• to combination meter terminal 27.
With the ignition switch in the ON or START position, power is supplied:
• to ignition relay (located in IPDM E/R),
• through 10A fuse [No. 6, located in fuse block (J/B)]
• to BCM terminal 38.
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 M57 and M61,
• to IPDM E/R terminals 39 and 59
• through grounds E15 and E24.
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)
1. IPDM E/R E46, E47 and E48 2. BCM M18 and M20 (viewed with
glove box removed)3. Combination switch (lighting switch)
M28
WKIA5554E

LT-44
< SERVICE INFORMATION >
FRONT FOG LAMP
1. Start auto active test. Refer to PG-19, "Auto Active Test" .
2. Make sure front fog lamp operates.
OK or NG
OK >> GO TO 4.
NG >> GO TO 5.
4.CHECK IPDM E/R
1. Select “IPDM E/R” on CONSULT-III. Select “DATA MONITOR” on “SELECT DIAG MODE” screen.
2. Make sure “FR FOG REQ” turns ON when front fog lamp switch is in ON position.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-26, "Removal and Installation of IPDM E/R" .
NG >> Replace BCM. Refer toBCS-18, "
Removal and Installation of BCM" .
5.CHECK FOG LAMP INPUT SIGNAL
With CONSULT-III
1. Turn ignition switch OFF.
2. Disconnect front fog lamp connector.
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 “FOG” screen.
6. When front fog lamp relay is operating, check voltage between
front fog lamp harness connector and ground.
Without CONSULT-III
1. Turn ignition switch OFF.
2. Disconnect front fog lamp connector.
3. Start auto active test. Refer to PG-19, "
Auto Active Test" .
4. When front fog lamp relay is operating, check voltage between front fog lamp harness connector and
ground.
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.
6.CHECK FOG LAMP CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector.Front fog lamp should operate.
When front fog lamp switch
is ON position: FR FOG REQ ON
(+)
(−) Voltage
Front fog lamp connector Terminal
RH E28
1 Ground Battery voltage
LH E27
(+)
(−) Voltage
Front fog lamp connector Terminal
RH E28
1 Ground Battery voltage
LH E27
PKIA6276E

FRONT FOG LAMP
LT-45
< SERVICE INFORMATION >
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3. Check continuity between IPDM E/R harness connector (A) and
front fog 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 FOG LAMP GROUND
1. Check continuity between front fog lamp harness connector and
ground.
OK or NG
OK >> Check front fog lamp bulbs.
NG >> Repair harness or connector.
Front Fog Lamp Does Not Illuminate (One Side)INFOID:0000000001704408
1. CHECK BULB
Check bulb of lamp which does not illuminate.
OK or NG
OK >> GO TO 2.
NG >> Replace front fog lamp bulb.
2.CHECK FOG LAMP CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector and front fog lamp connector.
3. Check continuity between IPDM E/R harness connector (A) and
front fog lamp harness connector (B).
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3.CHECK FOG LAMP GROUND
CircuitAB
Continuity
Connector Terminal Connector Terminal
RH
E4751 E28
1Yes
LH 50 E27
WKIA4408E
Front fog lamp connector Terminal
Ground Continuity
RH E28
2Yes
LH E27
PKIA6277E
CircuitAB
Continuity
Connector Terminal Connector Terminal
RH
E4751 E28
1Yes
LH 50 E27
WKIA4408E

LT-48
< SERVICE INFORMATION >
TURN SIGNAL AND HAZARD WARNING LAMPS
TURN SIGNAL AND HAZARD WARNING LAMPS
Component Parts and Harness Connector LocationINFOID:0000000001704412
System DescriptionINFOID:0000000001704413
TURN SIGNAL OPERATION
Power is supplied at all times
• through 40A fusible link (letter g , located in the fuse and fusible link box)
• to BCM (body control module) terminal 70,
• through 10A fuse [No. 8, located in the fuse block (J/B)]
• to BCM terminal 57,
• through 10A fuse [No. 13, located in the fuse block (J/B)]
• to combination meter terminal 27.
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,
• through 10A fuse [No. 3, located in fuse block (J/B)]
• to combination meter terminal 28.
With the ignition switch in the ACC or ON position, power is supplied
• through 10A fuse [No. 20, located in the fuse block (J/B)]
• to BCM terminal 11.
Ground is supplied
• to BCM terminal 67 and
• to combination meter terminals 21, 22 and 23
• through grounds M57 and M61.
LH Turn Signal Lamp
When the turn signal switch is moved to the left turn position, the BCM receives an input signal requesting left
turn signals to flash. The BCM then supplies power
• through BCM terminal 60
• to front combination lamp LH terminal 4 and
• to rear combination lamp LH terminal 6.
Ground is supplied
• to front combination lamp LH terminal 5
• through grounds E15 and E24,
1. BCM M18 and M20 (view with glove
box removed)2. Hazard switch M55 (late production) 3. Hazard switch M55 (early produc-
tion)
4. Combination switch (lighting switch)
M285. Combination meter M24
WKIA6002E

LT-56
< SERVICE INFORMATION >
TURN SIGNAL AND HAZARD WARNING LAMPS
3. Perform the preliminary check. Refer to LT-56, "Preliminary Check" .
4. Check symptom and repair or replace the cause of the malfunction.
5. Do turn signal and hazard warning lamps operate normally? If YES, GO TO 6. If NO, GO TO 4.
6. INSPECTION END
Preliminary CheckINFOID:0000000001704419
CHECK POWER SUPPLY AND GROUND CIRCUIT FOR BCM
Refer to BCS-15, "BCM Power Supply and Ground Circuit Inspection" .
CONSULT-III Function (BCM)INFOID:0000000001704420
Refer to LT- 11 , "CONSULT-III Function (BCM)" .
Turn Signals Do Not OperateINFOID:0000000001704421
1.CHECK COMBINATION SWITCH INPUT SIGNAL
With CONSULT-III
1. Select “BCM” on CONSULT-III. Select “FLASHER” on “SELECT TEST ITEM” screen.
2. Select “DATA MONITOR” on “SELECT DIAG MODE” screen. Make sure that “TURN SIGNAL R” and
“TURN SIGNAL L” turns ON-OFF linked with operation of lighting switch.
Without CONSULT-III
Refer to LT-63, "
Combination Switch Inspection" .
OK or NG
OK >> Replace the BCM. BCS-18, "Removal and Installation of BCM"
NG >> Check combination switch (lighting switch). Refer to LT-63, "Combination Switch Inspection" .
Front Turn Signal Lamp Does Not OperateINFOID:0000000001704422
1.CHECK BULB
Verify the bulb standard of each turn signal lamp is correct. Refer to LT-113, "
Exterior Lamp" .
OK or NG
OK >> GO TO 2.
NG >> Replace turn signal lamp bulb. Refer to LT-59, "
Bulb Replacement for Front Turn Signal Lamp" .
2.CHECK FRONT TURN SIGNAL LAMP CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector and front combination lamp LH or
RH connector.
3. Check continuity between BCM harness connector M20 (A) ter-
minal 60 and front combination lamp LH harness connector E29
(B) terminal 4.
4. Check continuity between BCM harness connector M20 terminal
61 (A) and front combination lamp RH harness connector E30
(B) terminal 4.
OK or NG
OK >> GO TO 3.When turn signal switch is
right position: TURN SIGNAL R ON
When turn signal switch is
left position: TURN SIGNAL L ON
60 - 4 : Continuity should exist.
61 - 4 : Continuity should exist.
WKIA5612E

TURN SIGNAL AND HAZARD WARNING LAMPS
LT-57
< SERVICE INFORMATION >
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NG >> Repair harness or connector.
3.CHECK GROUND CIRCUIT
1. Check continuity between front combination lamp LH harness
connector E29 terminal 5 and ground.
2. Check continuity between front combination lamp RH harness
connector E30 terminal 5 and ground.
OK or NG
OK >> Inspect connection at front combination lamp.
NG >> Repair harness.
Rear Turn Signal Lamp Does Not OperateINFOID:0000000001704423
1.CHECK BULB
Verify the bulb standard of each turn signal lamp is correct. Refer to LT-113, "
Exterior Lamp" .
OK or NG
OK >> GO TO 2.
NG >> Replace turn signal lamp bulb. Refer to LT-59, "
Bulb Replacement for Rear Turn Signal Lamp" .
2.CHECK REAR TURN SIGNAL LAMP CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector and rear combination lamp LH or
RH connector.
3. Check continuity between BCM harness connector M20 (A) ter-
minal 60 and rear combination lamp LH harness connector B25
(B) terminal 6.
4. Check continuity between BCM harness connector M20 (A) ter-
minal 61 and rear combination lamp RH harness connector
B107 (B) terminal 6.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3.CHECK GROUND CIRCUIT
1. Check continuity between rear combination lamp LH harness
connector B25 terminal 1 and ground.
2. Check continuity between rear combination lamp RH harness
connector B107 terminal 1 and ground.
OK or NG
OK >> Check rear combination lamp connector for proper con-
nection. Repair as necessary.
NG >> Repair harness or connector.5 - Ground : Continuity should exist.
5 - Ground : Continuity should exist.
WKIA5613E
60 - 6 : Continuity should exist.
61 - 6 : Continuity should exist.
WKIA5614E
1 - Ground : Continuity should exist.
1 - Ground : Continuity should exist.
WKIA5615E

LT-58
< SERVICE INFORMATION >
TURN SIGNAL AND HAZARD WARNING LAMPS
Hazard Warning Lamp Does Not Operate But Turn Signal Lamp Operates
INFOID:0000000001704424
1.CHECK HAZARD SWITCH INPUT SIGNAL
With CONSULT-III
1. Select “BCM” on CONSULT-III. Select “FLASHER” on “SELECT TEST ITEM” screen.
2. Select “DATA MONITOR” on “SELECT DIAG MODE” screen. Make sure that “HAZARD SW” turns ON-
OFF linked with operation of hazard switch.
Without CONSULT-III
Check voltage between BCM harness connector and ground.
OK or NG
OK >> Replace BCM. Refer to BCS-18, "Removal and Installa-
tion of BCM" .
NG >> GO TO 2.
2.CHECK HAZARD SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector and hazard switch connector.
3. Check continuity BCM harness connector M18 (A) and hazard
switch harness connector M55 (B).
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
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 SWITCHWhen hazard switch is in ON posi-
tion : HAZARD SW ON
Te r m i n a l
Condition Voltage (+)
(−)
BCM
connectorTe r m i n a l
M18 29 GroundHazard switch is ON 0V
Hazard switch is OFF Battery voltage
PKIC1014E
ABContinuity
Connector Terminal Connector Terminal
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M18 29 M55 2
PKIC1015E
1 – Ground : Continuity should exist.
PKIC1016E