2010 NISSAN LATIO relay

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
BRC-73
< SERVICE INFORMATION > [VDC/TCS/ABS]
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1. Check voltage between ABS actuator and electric unit (control unit) harness connector E33 and body ground.
2. Check resistance between ABS actuator and electric unit (con- trol unit) harness connector E33 and body ground.
OK or NG
OK >> Perform self-diagnosis again. If the same results appear, replace ABS actuator and electric unit (control
unit). Refer to BRC-89, "
Removal and Installation".
NG >> Repair the circuit.
Actuator Motor, Motor Relay, and Circuit InspectionINFOID:0000000005612165
INSPECTION PROCEDURE
1.CHECKING SELF-DIAGNOSIS RESULTS
Check self-diagnosis results.
Is the above displayed in the self-diagnosis display items?
YES >> GO TO 2.
NO >> Inspection End.
2.CONNECTOR INSPECTION
Disconnect the ABS actuator and electr ic unit (control unit) connector.
Check the terminals for deformation, disconnection, looseness or damage.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace as necessary.
3.CHECKING ABS MOTOR AND MOTOR RELAY POWER SYSTEM
1. Check voltage between ABS actuator and electric unit (control unit) harness connector E33 and ground. ABS actuator and electric
unit (control unit) harness connector E33 Body
ground Measured
value
(Approx.)
3 — 12V
WFIA0499E
ABS actuator and electric
unit (control unit) harness connector E33 Body
ground Measured
value
(Approx.)
4—0 Ω
WFIA0500E
Self-diagnosis results
PUMP MOTOR
ABS actuator and electric
unit (control unit) harness connector E33 Body
ground Measured
value
(Approx.)
2 — 12V
WFIA0501E
Revision: January 20102010 Versa

CVT SYSTEMCVT-21
< SERVICE INFORMATION > [RE0F08B]
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Hydraulic Control SystemINFOID:0000000005397772
TCM FunctionINFOID:0000000005397773
The function of the TCM is to:
• Receive input signals sent from various switches and sensors.
• Determine required line pressure, shifting point, and lock-up operation.
• Send required output signals to the step motor and the respective solenoids.
CONTROL SYSTEM OUTLINE
The CVT senses vehicle operating conditions through various sensors. It always controls the optimum shift
position and reduces shifting and lock-up shocks.
AWDIA0768GB
SENSORS (or SIGNAL)
⇒TCM
⇒ACTUATORS
Transmission range switch
Accelerator pedal position signal
Closed throttle position signal
Engine speed signal
CVT fluid temperature sensor
Vehicle speed signal
Overdrive control signal
Stop lamp switch signal
Primary speed sensor
Secondary speed sensor
Secondary pressure sensor Shift control
Line pressure control
Primary pressure control
Secondary pressure control
Lock-up control
Engine brake control
Vehicle speed control
Fail-safe control
Self-diagnosis
CONSULT-III co
mmunication
line
Duet-EA control
CAN system
On board diagnosis Step motor
Torque converter clutch solenoid
valve
Lock-up select solenoid valve
Line pressure solenoid valve
Secondary pressure solenoid
valve
Shift position indicator
O/D OFF indicator lamp
Starter relay
Revision: January 20102010 Versa

CVT-54
< SERVICE INFORMATION >[RE0F08B]
TROUBLE DIAGNOSIS
BRAKE SW (on/off)
XX Stop lamp switch (Signal input with CAN comuni-
cation)
FULL SW (on/off) XX
Signal input with CAN communications
IDLE SW (on/off) XX
SPORT MODE SW (on/off) XX Overdrive control switch (Signal input with CAN
comunication)
STRDWNSW (on/off) X—
Not mounted but displayed.
STRUPSW (on/off)
X—
DOWNLVR (on/off) X—
UPLVR (on/off) X—
NONMMODE (on/off) X—
MMODE (on/off) X—
INDLRNG (on/off) —— “L” position indicator output
INDDRNG (on/off) —— “D” position indicator output
INDNRNG (on/off) —— “N” position indicator output
INDRRNG (on/off) —— “R” position indicator output
INDPRNG (on/off) —— “P” position indicator output
CVT LAMP (on/off) ——
SPORT MODE IND (on/off) ——
MMODE IND (on/off) —— Not mounted but displayed.
SMCOIL D (on/off) —— Step motor coil “D” energizing status
SMCOIL C (on/off) —— Step motor coil “C” energizing status
SMCOIL B (on/off) —— Step motor coil “B” energizing status
SMCOIL A (on/off) —— Step motor coil “A” energizing status
LUSEL SOL OUT (on/off) ——
REV LAMP (on/off) — X
STRTR RLY OUT (on/off) —— Starter relay
LUSEL SOL MON (on/off) ——
STRTR RLY MON (on/off) —— Starter relay
VDC ON (on/off) X—
Not mounted but displayed.
TCS ON (on/off) X—
ABS ON (on/off) X—
ACC ON (on/off) X— Not mounted but displayed.
RANGE —X Indicates position is recognized by TCM. Indi-
cates a specific value required for control when
fail-safe function is activated.
M GEAR POS —X
Monitored item (Unit)
Monitor item selection
Remarks
ECU IN-
PUT SIG- NALS MAIN SIG-
NALS SELEC-
TION
FROM
MENU
Revision: January 20102010 Versa

EC-5
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Diagnosis Procedure ...........................................
..
343
P0507 ISC SYSTEM .........................................345
Description .......................................................... ..345
DTC Logic .............................................................345
Diagnosis Procedure .............................................345
P0603 ECM POWER SUPPLY .........................347
Description .......................................................... ..347
DTC Logic .............................................................347
Diagnosis Procedure .............................................347
P0605 ECM .......................................................349
Description ............................................................349
DTC Logic .............................................................349
Diagnosis Procedure .............................................350
P0607 ECM .......................................................351
Description ............................................................351
DTC Logic .............................................................351
Diagnosis Procedure .............................................351
P0643 SENSOR POWER SUPPLY .................352
DTC Logic ........................................................... ..352
Wiring Diagram .....................................................353
Diagnosis Procedure .............................................353
P0850 PNP SWITCH ........................................356
Description ............................................................356
DTC Logic .............................................................356
Component Function Check ..................................357
Wiring Diagram .....................................................358
Diagnosis Procedure .............................................358
P1148 CLOSED LOOP CONTROL ..................361
DTC Logic .............................................................361
P1217 ENGINE OVER TEMPERATURE .........362
DTC Logic ........................................................... ..362
Component Function Check ..................................362
Diagnosis Procedure .............................................363
P1225 TP SENSOR ..........................................366
Description .......................................................... ..366
DTC Logic .............................................................366
Diagnosis Procedure .............................................366
Special Repair Requirement .................................367
P1226 TP SENSOR ........................................ ..368
Description .......................................................... ..368
DTC Logic .............................................................368
Diagnosis Procedure .............................................368
Special Repair Requirement .................................369
P1421 COLD START CONTROL ................... ..370
Description .......................................................... ..370
DTC Logic .............................................................370
Diagnosis Procedure .............................................370
P1715 INPUT SPEED SENSOR (PRIMARY
SPEED SENSOR) .......................................... ..
372
Description .......................................................... ..372
DTC Logic ............................................................ ..372
Diagnosis Procedure .............................................372
P1805 BRAKE SWITCH .................................373
Description .............................................................373
DTC Logic ..............................................................373
Wiring Diagram ......................................................374
Diagnosis Procedure .............................................374
Component Inspection (Stop Lamp Switch) ..........376
P2100, P2103 THROTTLE CONTROL MO-
TOR RELAY ....................................................
377
Description .............................................................377
DTC Logic ..............................................................377
Wiring Diagram ......................................................378
Diagnosis Procedure .............................................378
P2101 ELECTRIC THROTTLE CONTROL
FUNCTION ......................................................
381
Description ........................................................... ..381
DTC Logic ..............................................................381
Wiring Diagram ......................................................382
Diagnosis Procedure .............................................382
Component Inspection ...........................................385
Special Repair Requirement ..................................385
P2118 THROTTLE CONTROL MOTOR .........386
Description .............................................................386
DTC Logic ..............................................................386
Wiring Diagram ......................................................387
Diagnosis Procedure .............................................387
Component Inspection ...........................................388
Special Repair Requirement ..................................389
P2119 ELECTRIC THROTTLE CONTROL
ACTUATOR .....................................................
390
Description .............................................................390
DTC Logic ..............................................................390
Diagnosis Procedure .............................................390
Special Repair Requirement ..................................391
P2122, P2123 APP SENSOR .........................392
Description .............................................................392
DTC Logic ..............................................................392
Wiring Diagram ......................................................393
Diagnosis Procedure .............................................393
Component Inspection ...........................................395
Special Repair Requirement ..................................395
P2127, P2128 APP SENSOR .........................396
Description .............................................................396
DTC Logic ..............................................................396
Wiring Diagram ......................................................397
Diagnosis Procedure .............................................397
Component Inspection ...........................................399
Special Repair Requirement ..................................400
P2135 TP SENSOR .........................................401
Description .............................................................401
DTC Logic ..............................................................401
Revision: January 20102010 Versa

EC-13
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On Board Diagnosis Logic ..................................
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DTC Confirmation Procedure ................................944
Wiring Diagram .....................................................945
Diagnosis Procedure .............................................946
Component Inspection ..........................................947
DTC P2100, P2103 THROTTLE CONTROL
MOTOR RELAY ...............................................
948
Component Description ....................................... ..948
CONSULT-III Reference Value in Data Monitor
Mode ................................................................... ..
948
On Board Diagnosis Logic ....................................948
DTC Confirmation Procedure ................................948
Wiring Diagram .....................................................949
Diagnosis Procedure .............................................950
DTC P2101 ELECTRIC THROTTLE CON-
TROL FUNCTION ........................................... ..
952
Description .......................................................... ..952
On Board Diagnosis Logic ....................................952
DTC Confirmation Procedure ................................952
Wiring Diagram .....................................................953
Diagnosis Procedure .............................................954
Component Inspection ..........................................957
Removal and Installation .......................................957
DTC P2118 THROTTLE CONTROL MOTOR ..958
Component Description ....................................... ..958
On Board Diagnosis Logic ....................................958
DTC Confirmation Procedure ................................958
Wiring Diagram .....................................................959
Diagnosis Procedure .............................................960
Component Inspection ..........................................961
Removal and Installation .......................................961
DTC P2119 ELECTRIC THROTTLE CON-
TROL ACTUATOR ...........................................
963
Component Description ....................................... ..963
On Board Diagnosis Logic ....................................963
DTC Confirmation Procedure ................................963
Diagnosis Procedure .............................................964
DTC P2122, P2123 APP SENSOR ..................965
Component Description ....................................... ..965
CONSULT-III Reference Value in Data Monitor
Mode ................................................................... ..
965
On Board Diagnosis Logic ....................................965
DTC Confirmation Procedure ................................965
Wiring Diagram .....................................................966
Diagnosis Procedure .............................................967
Component Inspection ..........................................969
Removal and Installation .......................................969
DTC P2127, P2128 APP SENSOR ................ ..970
Component Description ....................................... ..970
CONSULT-III Reference Value in Data Monitor
Mode ................................................................... ..
970
On Board Diagnosis Logic ....................................970
DTC Confirmation Procedure ................................971
Wiring Diagram .....................................................972
Diagnosis Procedure ........................................... ..973
Component Inspection ...........................................975
Removal and Installation .......................................976
DTC P2135 TP SENSOR ................................977
Component Description .........................................977
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... ..
977
On Board Diagnosis Logic .....................................977
DTC Confirmation Procedure ................................977
Wiring Diagram ......................................................978
Diagnosis Procedure .............................................979
Component Inspection ...........................................981
Removal and Installation .......................................981
DTC P2138 APP SENSOR .............................982
Component Description .........................................982
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... ..
982
On Board Diagnosis Logic .....................................982
DTC Confirmation Procedure ................................983
Wiring Diagram ......................................................984
Diagnosis Procedure .............................................985
Component Inspection ...........................................988
Removal and Installation .......................................988
DTC P2A00 A/F SENSOR 1 ...........................989
Component Description .........................................989
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... ..
989
On Board Diagnosis Logic .....................................989
DTC Confirmation Procedure ................................989
Wiring Diagram ......................................................991
Diagnosis Procedure .............................................992
Removal and Installation .......................................995
ASCD BRAKE SWITCH ..................................996
Component Description .........................................996
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... ..
996
Wiring Diagram ......................................................997
Diagnosis Procedure .............................................998
Component Inspection .........................................1002
ASCD INDICATOR .........................................1004
Component Description .......................................1004
CONSULT-III Reference Value in Data Monitor
Mode ....................................................................
1004
Wiring Diagram ....................................................1005
Diagnosis Procedure ...........................................1005
ELECTRICAL LOAD SIGNAL .......................1007
CONSULT-III Reference Va lue in Data Monitor
Mode ....................................................................
1007
Diagnosis Procedure ...........................................1007
FUEL INJECTOR ...........................................1009
Component Description .......................................1009
CONSULT-III Reference Va lue in Data Monitor
Mode ....................................................................
1009
Revision: January 20102010 Versa

ENGINE CONTROL SYSTEMEC-35
< FUNCTION DIAGNOSIS > [HR16DE]
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Crankshaft position sensor (POS)
EC-257, "Description"
Cooling fan motorEC-60, "System Description"
Electric throttle control actuatorEC-390, "Description"
Engine coolant temperature sensorEC-161, "Description"
EVAP canister purge volume control solenoid valveEC-285, "Description"
EVAP canister vent control valveEC-295, "Description"
EVAP control system pressure sensorEC-306, "Description"
Fuel injectorEC-423, "Description"
Fuel level sensorEC-336, "Description"
Fuel pumpEC-427, "Description"
Fuel tank temperature sensorEC-234, "Description"
Heated oxygen sensor 2EC-198, "Description"
Heated oxygen sensor 2 heaterEC-134, "Description"
Ignition signalEC-432, "Description"
Intake air temperature sensorEC-156, "Description"
Intake valve timing control solenoid valveEC-78, "System Description"
Knock sensorEC-253, "Description"
Mass air flow sensorEC-142, "Description"
PCV valveEC-449, "Description"
Refrigerant pressure sensorEC-450, "Description"
Stop lamp switchEC-373, "Description"
Throttle control motorEC-386, "Description"
Throttle control motor relayEC-377, "Description"
Throttle position sensorEC-165, "Description"
Component Reference
Revision: January 20102010 Versa

EC-52
< FUNCTION DIAGNOSIS >[HR16DE]
AIR CONDITIONING CUT CONTROL
AIR CONDITIONING CUT CONTROL
System DiagramINFOID:0000000005398260
System DescriptionINFOID:0000000005398261
INPUT/OUTPUT SIGNAL CHART
*1: This signal is sent to the ECM via the CAN communication line.
*2: ECM determines the start signal status by the signals of engine speed and battery voltage.
SYSTEM DESCRIPTION
This system improves engine operati
on when the air conditioner is used.
Under the following conditions, the air conditioner is turned off.
• When the accelerator pedal is fully depressed.
• When cranking the engine.
• At high engine speeds.
• When the engine coolant temperat ure becomes excessively high.
JMBIA2195GB
Sensor Input Signal to ECMECM functionActuator
Air conditioner switch*
1Air conditioner ON signal
Air conditioner
cut controlIPDM E/R
↓
Air conditio
ner relay
↓
Compressor
Accelerator pedal position sensor
Accelerator pedal position
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed*
2
Engine coolant temperature sensor
Engine coolant temperature
Battery Battery voltage*
2
Refrigerant pressure sensorRefrigerant pressure
EPS control unit Power steering operation
ABS actuator and electric unit (control unit)
Vehicle speed*
1
Combination meter
BCM Air conditioner ON signal*
1
Revision: January 20102010 Versa

EC-60
< FUNCTION DIAGNOSIS >[HR16DE]
COOLING FAN CONTROL
COOLING FAN CONTROL
System DiagramINFOID:0000000005398265
System DescriptionINFOID:0000000005398266
INPUT/OUTPUT SIGNAL CHART
*1: The ECM determines the start signal status by the signals of engine speed and battery voltage.
*2: This signal is sent to ECM via the CAN communication line.
SYSTEM DESCRIPTION
ECM controls cooling fan speed corresponding to vehicle
speed, engine coolant temperature, refrigerant pres-
sure, air conditioner ON signal. Then contro l system has 3-step control [HIGH/LOW/OFF].
Cooling Fan Operation
JMBIA2196GB
SensorInput signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed*
1
Cooling fan
controlIPDM E/R
↓
Cooling fan relay
↓
Cooling fan motor
Battery
Battery voltage*
1
ABS actuator and electric unit (control unit)
Vehicle speed*2Combination meter
Engine coolant temperature sensorEngine coolant temperature
BCM Air conditioner ON signal*
2
Refrigerant pressure sensorRefrigerant pressure
Revision: January 20102010 Versa