2008 NISSAN LATIO key

LAN-4
Diagnosis Procedure .............................................117
I-KEY BRANCH LINE CIRCUIT ......................118
Diagnosis Procedure .............................................118
M&A BRANCH LINE CIRCUIT ........................119
Diagnosis Procedure .............................................119
TCM BRANCH LINE CIRCUIT ........................120
Diagnosis Procedure .............................................120
IPDM-E BRANCH LINE CIRCUIT ...................121
Diagnosis Procedure .............................................121
CAN COMMUNICATION CIRCUIT ..................122
Diagnosis Procedure .............................................122
CAN SYSTEM (TYPE 9)
COMPONENT DIAGNOSIS .......................
124
MAIN LINE BETWEEN DLC AND TCM CIR-
CUIT .................................................................
124
Diagnosis Procedure .............................................124
ECM BRANCH LINE CIRCUIT ........................125
Diagnosis Procedure .............................................125
BCM BRANCH LINE CIRCUIT ........................126
Diagnosis Procedure .............................................126
DLC BRANCH LINE CIRCUIT .........................127
Diagnosis Procedure .............................................127
EPS BRANCH LINE CIRCUIT .........................128
Diagnosis Procedure .............................................128
M&A BRANCH LINE CIRCUIT ........................129
Diagnosis Procedure .............................................129
ABS BRANCH LINE CIRCUIT ........................130
Diagnosis Procedure .............................................130
TCM BRANCH LINE CIRCUIT ........................131
Diagnosis Procedure .............................................131
IPDM-E BRANCH LINE CIRCUIT ....................132
Diagnosis Procedure .............................................132
CAN COMMUNICATION CIRCUIT ..................133
Diagnosis Procedure .............................................133
CAN SYSTEM (TYPE 10)
COMPONENT DIAGNOSIS ......................
135
MAIN LINE BETWEEN DLC AND TCM CIR-
CUIT ..................................................................
135
Diagnosis Procedure .............................................135
ECM BRANCH LINE CIRCUIT .........................136
Diagnosis Procedure .............................................136
BCM BRANCH LINE CIRCUIT .........................137
Diagnosis Procedure .............................................137
DLC BRANCH LINE CIRCUIT .........................138
Diagnosis Procedure .............................................138
EPS BRANCH LINE CIRCUIT ..........................139
Diagnosis Procedure .............................................139
I-KEY BRANCH LINE CIRCUIT .......................140
Diagnosis Procedure .............................................140
M&A BRANCH LINE CIRCUIT .........................141
Diagnosis Procedure .............................................141
ABS BRANCH LINE CIRCUIT .........................142
Diagnosis Procedure .............................................142
TCM BRANCH LINE CIRCUIT .........................143
Diagnosis Procedure .............................................143
IPDM-E BRANCH LINE CIRCUIT ....................144
Diagnosis Procedure .............................................144
CAN COMMUNICATION CIRCUIT ..................145
Diagnosis Procedure .............................................145

LAN-20
< HOW TO USE THIS MANUAL >[CAN]
HOW TO USE THIS SECTION
HOW TO USE THIS MANUAL
HOW TO USE THIS SECTION
CautionINFOID:0000000001711213
• This section describes information peculiar to a vehicle and inspection procedures.
• For trouble diagnosis procedure, refer to LAN-15, "
Trouble Diagnosis Procedure".
Abbreviation ListINFOID:0000000001711214
Unit name abbreviations in CONSULT-III CAN diagnosis and in this section are as per the following list.
Abbreviation Unit name
A-BAG Air bag diagnosis sensor unit
ABS ABS actuator and electric unit (control unit)
BCM BCM
DLC Data link connector
ECM ECM
EPS EPS control unit
I-KEY Intelligent Key unit
IPDM-E IPDM E/R
M&A Combination meter
TCM TCM

CAN COMMUNICATION SYSTEM
LAN-23
< FUNCTION DIAGNOSIS >[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN
N
O
P
FUNCTION DIAGNOSIS
CAN COMMUNICATION SYSTEM
CAN System Specification ChartINFOID:0000000001711219
NOTE:
Refer to LAN-15, "
Trouble Diagnosis Procedure" for how to use CAN system specification chart.
×: Applicable
VEHICLE EQUIPMENT IDENTIFICATION INFORMATION
NOTE:
Check CAN system type from the vehicle shape and equipment.
CAN Communication Signal ChartINFOID:0000000001711220
Refer to LAN-14, "How to Use CAN Communication Signal Chart" for how to use CAN communication signal
chart.
NOTE:
Refer to LAN-20, "
Abbreviation List" for the abbreviations of the connecting units.
T: Transmit R: Receive
Body type Hatchback/Sedan
Axle2WD
EngineMR18DE
Transmission M/T A/T CVT
Brake control — ABS — ABS — ABS
Intelligent Key system×× ××
CAN system type 12345678910
Start CAN Diagnosis
(CONSULT-III)12345678910
BKIA0265E
Signal name/Connecting unitECM
BCM
EPS
I-KEY
M&A
ABS
TCM
*1
TCM
*2
IPDM-E
A/C compressor request signal TR
Accelerator pedal position signal T R R
ASCD CRUISE lamp signal T R
ASCD SET lamp signal T R
Closed throttle position signal T R R
Cooling fan motor operation signal TR

LAN-24
< FUNCTION DIAGNOSIS >[CAN]
CAN COMMUNICATION SYSTEM
Engine coolant temperature signal T R
Engine speed signal T R R
Engine status signal T R
Fuel consumption monitor signal T R
Malfunction indicator lamp signal T R
Wide open throttle position signal T R R
A/C switch signal R T
Blower fan motor switch signal R T
Buzzer output signalTR
TR
Day time running light request signal
*3TR R
Door lock/unlock status signal T R
Door switch signal T R R R
Front wiper request signal T R
High beam request signal T R R
Horn chirp signal T R
Ignition switch signal T R
Low beam request signal T R
Position lights request signal T R R
Rear window defogger switch signal T R
Sleep/wake up signalRT
TRR R
Theft warning horn request signal T R
Tire pressure signal
*4TR
Trunk open/close status signal T R
Turn indicator signal T R
EPS operation signal R T
EPS warning lamp signal T R
Door lock/unlock/trunk open request signal R T
Hazard request signal R T
Ignition knob switch signal R T
KEY warning lamp signal T R
LOCK warning lamp signal T R
Panic alarm request signal R T
Fuel level sensor signal R T
Overdrive control switch signal T R R
P/N range signal T R
Stop lamp switch signal T R R
Vehicle speed signalRRR T
RRRT R
R
*5R*5T*5
ABS warning lamp signal R TSignal name/Connecting unit
ECM
BCM
EPS
I-KEY
M&A
ABS
TCM
*1
TCM
*2
IPDM-E

CAN COMMUNICATION SYSTEM
LAN-25
< FUNCTION DIAGNOSIS >[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN
N
O
P
*1: A/T models
*2: CVT models
*3: Models for Canada
*4: Models for USA
*5: Models without ABS
NOTE:
CAN data of the air bag diagnosis sensor unit is not used by usual service work, thus it is omitted.
Brake warning lamp signal R T
A/T check indicator signal R T
A/T self-diagnosis signal R T
OD OFF indicator signal R T
Output shaft revolution signal R T T
Shift position indicator signal R T T
Turbine revolution signal R T
CVT self-diagnosis signal R T
Input shaft revolution signal R T
OD OFF indicator signal R T
Front wiper stop position signal R T
High beam status signal RT
Low beam status signal RT
Oil pressure switch signal R T
Rear window defogger control signal RT Signal name/Connecting unit
ECM
BCM
EPS
I-KEY
M&A
ABS
TCM
*1
TCM
*2
IPDM-E

LAN-26
< COMPONENT DIAGNOSIS >[CAN]
CAN COMMUNICATION SYSTEM
COMPONENT DIAGNOSIS
CAN COMMUNICATION SYSTEM
Component Parts LocationINFOID:0000000001711221
1. BCM M18 2. ABS actuator and electric unit (con-
trol unit) E333. IPDM E/R E46
4. ECM E16 5. EPS control unit M53 6. TCM E31
7. Combination meter M24 8. Data link connector M22 9. Air bag diagnosis sensor unit M35
10. Intelligent Key unit M52
BKIA0270E

LAN-30
< COMPONENT DIAGNOSIS >[CAN]
MALFUNCTION AREA CHART
MALFUNCTION AREA CHART
Main LineINFOID:0000000001711223
Branch LineINFOID:0000000001711224
Short CircuitINFOID:0000000001711225
Malfunction Area Reference
Main line between data link connector and ABS actuator and
electric unit (control unit)LAN-31, "
Diagnosis Procedure"
Main line between data link connector and TCMLAN-32, "Diagnosis Procedure"
Malfunction Area Reference
ECM branch line circuit LAN-33, "
Diagnosis Procedure"
BCM branch line circuit LAN-34, "Diagnosis Procedure"
Data link connector branch line circuit LAN-35, "Diagnosis Procedure"
EPS control unit branch line circuit LAN-36, "Diagnosis Procedure"
Intelligent Key unit branch line circuit LAN-37, "Diagnosis Procedure"
Combination meter branch line circuit LAN-38, "Diagnosis Procedure"
ABS actuator and electric unit (control unit) branch line circuit LAN-39, "Diagnosis Procedure"
TCM branch line circuitLAN-40, "Diagnosis Procedure"
IPDM E/R branch line circuit LAN-41, "Diagnosis Procedure"
Malfunction Area Reference
CAN communication circuitLAN-42, "
Diagnosis Procedure"

I-KEY BRANCH LINE CIRCUIT
LAN-37
< COMPONENT DIAGNOSIS >[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN
N
O
P
I-KEY BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000001711233
INSPECTION PROCEDURE
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the terminals and connectors of the Intelligent Key unit for damage, bend and loose connection
(unit side and connector side).
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the terminal and connector.
2.CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of Intelligent Key unit.
2. Check the resistance between the Intelligent Key unit harness connector terminals.
Is the measurement value within the specification?
YES >> GO TO 3.
NO >> Repair the Intelligent Key unit branch line.
3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the Intelligent Key unit. Refer to BL-110, "
Power Supply and
Ground Circuit Inspection".
Is the inspection result normal?
YES (Present error)>>Replace the Intelligent Key unit. Refer to BL-142, "Removal and Installation of Intelli-
gent Key Unit".
YES (Past error)>>Error was detected in the Intelligent Key unit branch line.
NO >> Repair the power supply and the ground circuit.
Intelligent Key unit harness connector
Resistance (Ω)
Connector No. Terminal No.
M52 2 3 Approx. 54 – 66