2009 NISSAN LATIO engine

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CONTENTS
POWER SUPPLY, GROUND & CIRCUIT ELEMENTS
SERVICE INFORMATION .. ..........................2
PRECAUTIONS .............................................. .....2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
2
POWER SUPPLY ROUTING CIRCUIT .......... .....3
Schematic ........................................................... ......3
Wiring Diagram - POWER - ................................ ......5
Fuse .................................................................... ....15
Fusible Link ......................................................... ....15
Circuit Breaker (Built Into BCM) .......................... ....15
Circuit Breaker .................................................... ....15
IPDM E/R (INTELLIGENT POWER DISTRI-
BUTION MODULE ENGINE ROOM) ............. ....16
System Description ............................................. ....16
CAN Communication System Description ........... ....17
Function of Detecting Igni tion Relay Malfunction ....17
CONSULT-III Function (IPDM E/R) ..................... ....17
Auto Active Test .................................................. ....19
IPDM E/R Terminal Arrangement - Type A ......... ....22
IPDM E/R Terminal Arrangement - Type B ......... ....23
Terminal and Reference Value for IPDM E/R ..... ....24
IPDM E/R Power/Ground Circuit Inspection ....... ....26
Inspection with CONSULT- III (Self-Diagnosis) .......27
Removal and Installation of IPDM E/R ....................27 GROUND CIRCUI
T ........................................... 29
Ground Distribution .............................................. ....29
HARNESS ................... ...................................... 38
Harness Layout ................................................... ....38
Wiring Diagram Codes (Cell Codes) ................... ....57
ELECTRICAL UNITS LOCATION .................... 60
Electrical Units Location ...................................... ....60
HARNESS CONNECTOR ................................. 64
Description ........................................................... ....64
ELECTRICAL UNITS ........................................ 67
Terminal Arrangement ......................................... ....67
STANDARDIZED RELAY ................................. 68
Description ........................................................... ....68
SUPER MULTIPLE JUNCTION (SMJ) ............. 70
Terminal Arrangement ......................................... ....70
FUSE BLOCK-JUNCTION BOX (J/B) .............. 72
Terminal Arrangement ......................................... ....72
FUSE AND FUSIBLE LINK BOX ...................... 73
Terminal Arrangement ......................................... ....73

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24 Y Cooling fan relay-3 Output —
Conditions correct for cooling
fan high operation Battery voltage
Conditions not correct for
cooling fan high operation 0V
26 O Tail lamp relay (park-
ing lamps) Output — Lighting switch in 2nd position Battery voltage
27 BR Tail lamp relay (park-
ing lamps) Output — Lighting switch in 2nd position Battery voltage
28 GR Tail lamp relay (park-
ing lamps) Output — Lighting switch in 2nd position Battery voltage
29 P Tail lamp relay (park-
ing lamps) Output — Lighting switch in 2nd position Battery voltage
30
(A/T
only) R Fuse 54 Output — Ignition switch ON or START Battery voltage
Ignition switch OFF or ACC 0V
31 O Fuse 55 Output — Ignition switch ON or START Battery voltage
Ignition switch OFF or ACC 0V
32 L Wiper high speed sig-
nal OutputON or
START Wiper switch OFF, LO, INT 0V
HI Battery voltage
33 Y Wiper low speed sig-
nal OutputON or
START Wiper switch OFF 0V
LO or INT Battery voltage
35 BR Starter relay (inhibit
switch) InputON or
START Selector lever in "P" or "N"
(CVT or A/T) or clutch pedal
depressed (M/T) Battery voltage
Selector lever any other posi-
tion (CVT or A/T) or clutch
pedal released (M/T) 0V
36 BR Fuel pump relay Output — Ignition switch ON or START Battery voltage
Ignition switch OFF or ACC 0V
37 G Oil pressure switch Input ON or
START Engine running and oil pres-
sure within specification Battery voltage
Engine not running or oil pres-
sure below specification 0V
38 R Wiper auto stop signal Input ON or
START Wipers not in park position Battery voltage
Wipers in park position 0V
39 B Ground Input — — 0V
40 P CAN-L — ON — —
41 L CAN-H — ON — —
45 R Horn relay control Input — Horn switch PUSHED, alarm
switch activated or door lock/
unlock is confirmed when op-
erating lock system via the
keyfob 0V
Horn switch released, alarm
not active, keyfob not active Battery voltage
46 Y Throttle control motor
relay control Input —Ignition switch ON or START 0V
Ignition switch OFF or ACC Battery voltage
47 GR Fuel pump relay con-
trol Input —Ignition switch ON or START 0V
Ignition switch OFF or ACC Battery voltage
Terminal
Wire
color Signal name Signal
input/
output Measuring condition
Reference value
(Approx.)
Ignition
switch Operation or condition

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ENGINE ROOM HARNESS (LH VIEW)
Refer to "ENGINE ROOM HARNESS (RH VIEW)" for continuation of engine room harness.

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ENGINE ROOM HARNESS (RH VIEW)
Refer to "ENGINE ROOM HARNE SS (LH VIEW)" for continuation of engine room harness.

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BODY HARNESS (HATCHBACK) B5 F3 B/1 : A/C compressor F5 F25 B/10 : Park/n
eutral position (PNP) switch (with A/T)
B4 F4 — : Generator C3 F26 W/2 : Condenser-2
A4 F5 — : Generator ground C5 F27 — : Starter motor
E3 F6 GR/2 : Engine coolant temperature sensor C5 F28 — : Starter motor
D2 F7 B/6 : Electric throttle control actuator F5 F30 B/8 : Terminal cord assembly
G4 F8 SMJ : To E8 F2 F31 B/6 : Mass air flow sensor
B4 F9 — : Engine ground C5 F32 GR/1 : Oil pressure switch
G2 F10 GR/32 : ECM F5 F33 GR/6 : To E19
G2 F11 BR/48 : ECM C3 F34 GR/3 : Ignition coil No. 1 (with power transistor)
D3 F12 GR/4 : Air fuel ratio (A/F) sensor 1 C3 F35 GR/3 : Ignition coil No. 2 (with power transistor)
E2 F13 B/4 : Heated oxygen sensor 2 C3 F36 GR/3 : Ignition coil No. 3 (with power transistor)
C4 F14 B/2 : Knock sensor C3 F37 GR/3 : Ignition coil No. 4 (with power transistor)
D3 F15 B/3 : Crankshaft position sensor (POS) E5 F38 BR/3 : Revolution sensor
C4 F16 — : Engine ground E4 F39 — : Fusible link box (battery)
B4 F17 GR/2 : Fuel injector No. 1 E4 F40 — : Fusible link box (battery)
C4 F18 GR/2 : Fuel injector No. 2 E2 F41 GR/2 : Vehicle speed sensor
C4 F19 GR/2 : Fuel injector No. 3 F5 F45 GR/3 : Turbine revolution sensor
D4 F20 GR/2 : Fuel injector No. 4 E5 F46 GR/22 : CVT unit
D4 F21 B/3 : Camshaft position sensor (PHASE) E5 F4 7 B/3 : Powertrain revolution sensor (with A/T)
C3 F22 GR/2 : EVAP canister purge volume control
solenoid valve E3 F48 B/3 : Secondary speed sensor (with M/T)

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Wiring Diagram Codes (Cell Codes)
INFOID:0000000004306667
Use the chart below to find out what each wiring diagram code stands for.
Refer to the wiring diagram code in the alphabetical index to find the location (page number) of each wiring
diagram. D4 D405 W/4 : Back door lock assembly C2 D413 B/1 : Rear window defogger (-)
D4 D406 W/2 : Back door request switch F3 D414 — : Body ground
E2 D407 W/2 : High mounted stop lamp Code Section Wiring Diagram Name
ABS BRC Anti-lock Brake System
A/C,M MTC Manual Air Conditioner
APPS1 EC Accelerator Pe dal Position Sensor
A/F EC Air Fuel Ratio Sensor 1
A/FH EC Air Fuel Ratio Sensor 1 Heater
APPS2 EC Accelerator Pe dal Position Sensor
APPS3 EC Accelerator Pe dal Position Sensor
ASC/BS EC ASCD Brake Switch
ASC/SW EC ASCD Steering Switch
ASCBOF EC ASCD Brake Switch
ASCIND EC ASCD Indicator
AT/IND DI A/T Indicator Lamp
AUDIO AV Audio
BACK/L LT Back-up Lamp
BA/FTS AT A/T Fluid Temperature Sensor and TCM Power Supply
B/DOOR BL Back Door Opener
BRK/SW EC Brake Switch
CAN AT CAN Communication Line
CAN CVT CAN Comm unication Line
CAN EC CAN Communication Line
CAN LAN CAN System
CHARGE SC Charging System
CHIME DI Warning Chime
COOL/F EC Cooling Fan Control
COMBSW LT Combination Switch
CVTIND DI CVT Indicator Lamp
D/LOCK BL Power Door Lock
DEF GW Rear Window Defogger
DTRL LT Headlamp - Wi th Daytime Light System
ECTS EC Engine Coolant Temperature Sensor
ENGSS AT Engine Speed Signal
EPS STC Electronic Controlled Power Steering
ETC1 EC Electric Throttle Control Function
ETC2 EC Throttle Control Motor Relay
ETC3 EC Throttle Control Motor
F/FOG LT Front Fog Lamp
F/PUMP EC Fuel Pump
FTS AT A/T Fluid Temperature Sensor
FTS CVT CVT Fluid Temperature Sensor Circuit
FTTS EC Fuel Tank Temperature Sensor
FUEL EC Fuel Ignition System Function
HEATER MTC Heater System

Removal and Instal-
lation " .
CHECKING STEERING WHEEL PLAY
• Turn steering wheel so that front wheels come to the straight-ahead position. Start engine and lightly turn
steering wheel to the left and right until front wheels start to move. Measure steering wheel movement on the
outer circumference.
• When the measurement value is outside the standard val ue, check backlash for each joint of steering col-
umn assembly and installation condition of steering gear assembly.
CHECKING NEUTRAL POSITION STEERING WHEEL
• Make sure that steering gear assembly, steering colu mn assembly and steering wheel are installed in the
correct position.
• Perform neutral position inspection after wheel alignment. Refer to PS-2, " Precaution for Supplemental
Restraint System (SRS) "AIR BA
G" and "SEAT BELT PRE-TENSIONER" " .
• Set vehicle to the straight-ahead position and c onfirm steering wheel is in the neutral position.
• Loosen outer socket lock nut and turn inner socket to left and right equally to make fine adjustments if steer-
ing wheel is not in the neutral position.
CHECKING STEERING WHEEL TURNING FORCE
1. Park vehicle on a level and dry surface, set parking brake.
2. Start engine.
3. Check steering wheel turning force when steering wheel has been turned 360 ° from neutral position using suitable tool as
shown.
4. If steering wheel turning force is out of the specification, refer to STC-6, " How to Perform Trouble Diagnosis " .
CHECKING FRONT WHEEL TURNING ANGLE Steering wheel axial end play : 0 mm (0 in)
Steering wheel play : 0 - 35 mm (0 - 1.38 in)
Steering wheel
turning force : Less than 36 N (3.7 kg-f, 8.2 lb-f)

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• Check front wheel turning angle after toe-in inspection. Place front
wheels on turning radius gauges and rear wheels on stands.
Check the maximum inner and outer wheel turning angles for LH
and RH road wheels.
• With the engine at idle, turn steering wheel from full left stop to full right stop and measure the turning angles.
• Measure rack stroke if angles are outside the specified value.
• Disassemble steering gear assembly to check the cause that rack stroke is outside of the standard.
• Steering angles are not adjustabl e. Check steering gear assembly,
steering column assembly and front suspension components for
wear or damage if any of the turning angles are different from the
specified value. Replace any of them, if any non-standard condi-
tion exists.
Removal and Installation INFOID:0000000004305932
REMOVAL NOTE:
When reconnecting spiral cable, secure cable with a tape so that case and rotating part keep aligned. This will
omit neutral position alignment procedure during spiral cable installation.
1. Set front wheels to straight-ahead position.
2. Remove driver air bag module. Refer to SRS-34 .
3. Remove steering wheel lock nut after steering is locked.
4. Remove steering wheel.
INSTALLATION Installation is in the reverse order of removal.