NISSAN LATIO 2007 Service Repair Manual

TROUBLE DIAGNOSIS
LAN-75
[CAN]
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2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of BCM.
2. Check the resistance between the BCM harness connector terminals.
OK or NG
OK >> GO TO 3.
NG >> Repair the BCM branch line.
3. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of BCM. Refer to BCS-16, "
BCM Power Supply and Ground
Circuit Check" .
OK or NG
OK >>
Present error: Replace the BCM. Refer to BCS-25, "Removal and Installation of BCM" .

Past error: Error was detected in the BCM branch line.
NG >> Repair the power supply and the ground circuit.
Data Link Connector Branch Line CircuitUKS005WL
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 data link connector for damage, bend and loose connection
(connector side and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
Check the resistance between the data link connector terminals.
OK or NG
OK >>
Present error: Check the following items again.
–Decision of CAN system type.
–Not received CONSULT-II data (SELECT SYSTEM, SELF-DIAG RESULTS, CAN DIAG SUP-
PORT MNTR).
–Procedure for detecting root cause.

Past error: Error was detected in the data link connector branch line circuit.
NG >> Repair the data link connector branch line.
BCM harness connector
Resistance (Ω)
Connector No. Terminal No.
M18 39 40 Approx. 54 – 66
Data link connector
Resistance (Ω)
Connector No. Terminal No.
M22 6 14 Approx. 54 – 66

LAN-76
[CAN]
TROUBLE DIAGNOSIS
Revision: June 20062007 Versa
EPS Control Unit Branch Line CircuitUKS005WM
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 EPS control unit for damage, bend and loose connection (unit
side and connector side).
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of EPS control unit.
2. Check the resistance between the EPS control unit harness connector terminals.
OK or NG
OK >> GO TO 3.
NG >> Repair the EPS control unit branch line.
3. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of EPS control unit. Refer to STC-9, "
Wiring Diagram — EPS
—" .
OK or NG
OK >>
Present error: Replace the EPS control unit. Refer to PS-9, "Removal and Installation" .

Past error: Error was detected in the EPS control unit branch line.
NG >> Repair the power supply and the ground circuit.
Intelligent Key Unit Branch Line CircuitUKS005WN
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).
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
EPS control unit harness connector
Resistance (Ω)
Connector No. Terminal No.
M53 9 16 Approx. 54 – 66

TROUBLE DIAGNOSIS
LAN-77
[CAN]
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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.
OK or NG
OK >> GO TO 3.
NG >> Repair the Intelligent Key unit branch line.
3. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of Intelligent Key unit. Refer to BL-123, "
Power Supply and
Ground Circuit Check" .
OK or NG
OK >>
Present error: Replace the Intelligent Key unit. Refer to BL-160, "Removal and Installation of
Intelligent Key Unit" .

Past error: Error was detected in the Intelligent Key unit branch line.
NG >> Repair the power supply and the ground circuit.
Combination Meter Branch Line CircuitUKS005WO
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 combination meter for damage, bend and loose connection
(unit side and connector side).
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of combination meter.
2. Check the resistance between the combination meter harness connector terminals.
OK or NG
OK >> GO TO 3.
NG >> Repair the combination meter branch line.
3. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of combination meter. Refer to DI-17, "
Power Supply and
Ground Circuit Inspection" .
OK or NG
OK >>
Present error: Replace the combination meter. Refer to DI-23, "Removal and Installation" .

Past error: Error was detected in the combination meter branch line.
NG >> 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
Combination meter harness connector
Resistance (Ω)
Connector No. Terminal No.
M24 1 2 Approx. 54 – 66

LAN-78
[CAN]
TROUBLE DIAGNOSIS
Revision: June 20062007 Versa
ABS Actuator and Electric Unit (Control Unit) Branch Line CircuitUKS005WP
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 ABS actuator and electric unit (control unit) for damage, bend
and loose connection (unit side and connector side).
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of ABS actuator and electric unit (control unit).
2. Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi-
nals.
OK or NG
OK >> GO TO 3.
NG >> Repair the ABS actuator and electric unit (control unit) branch line.
3. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of ABS actuator and electric unit (control unit). Refer to BRC-
29, "ABS Control Unit Power and Ground Systems Inspection" .
OK or NG
OK >>
Present error: Replace the ABS actuator and electric unit (control unit). Refer to BRC-36,
"Removal and Installation" .

Past error: Error was detected in the ABS actuator and electric unit (control unit) branch line.
NG >> Repair the power supply and the ground circuit.
TCM Branch Line CircuitUKS005WQ
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 TCM for damage, bend and loose connection (unit side and
connector side).
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
ABS actuator and electric unit (control unit) harness connector
Resistance (Ω)
Connector No. Terminal No.
E33 26 15 Approx. 54 – 66

TROUBLE DIAGNOSIS
LAN-79
[CAN]
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2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of TCM.
2. Check the resistance between the TCM harness connector terminals.
OK or NG
OK >> GO TO 3.
NG >> Repair the TCM branch line.
3. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of TCM. Refer to AT-183, "
MAIN POWER SUPPLY AND
GROUND CIRCUIT" (Models with A/T), CVT-42, "Circuit Diagram" (Models with CVT).
OK or NG
OK >>
Present error: Replace the TCM. Refer to AT-228, "Removal and Installation" (Models with A/
T), CVT-190, "
Removal and Installation" (Models with CVT).

Past error: Error was detected in the TCM branch line.
NG >> Repair the power supply and the ground circuit.
IPDM E/R Branch Line CircuitUKS005WR
INSPECTION PROCEDURE
1. CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the following terminals and connectors for damage, bend and loose connection (unit side and con-
nector side).
–Models with ABS and/or TCM:
 IPDM E/R connector
–Models without ABS and TCM:
 IPDM E/R connector
 Harness connector E7
 Harness connector M69
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of IPDM E/R.
2. Check the resistance between the IPDM E/R harness connector terminals.
OK or NG
OK >> GO TO 3.
NG >> Repair the IPDM E/R branch line.
TCM harness connector
Resistance (Ω)
Connector No. Terminal No.
E31 5 6 Approx. 54 – 66
IPDM E/R harness connector
Resistance (Ω)
Connector No. Terminal No.
E46 41 40 Approx. 108 – 132

LAN-80
[CAN]
TROUBLE DIAGNOSIS
Revision: June 20062007 Versa
3. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of IPDM E/R. Refer to PG-28, "
IPDM E/R Power/Ground Cir-
cuit Inspection" .
OK or NG
OK >>
Present error: Replace the IPDM E/R. Refer to PG-29, "Removal and Installation of IPDM E/R"
.

Past error: Error was detected in the IPDM E/R branch line.
NG >> Repair the power supply and the ground circuit.
CAN Communication CircuitUKS005WS
INSPECTION PROCEDURE
1. CONNECTOR INSPECTION
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Disconnect all the unit connectors on CAN communication system.
4. Check terminals and connectors for damage, bend and loose connection.
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
2. CHECK HARNESS CONTINUITY (SHORT CIRCUIT)
Check the continuity between the data link connector terminals.
OK or NG
OK >> GO TO 3.
NG >> Check the harness and repair the root cause.
3. CHECK HARNESS CONTINUITY (SHORT CIRCUIT)
Check the continuity between the data link connector and the ground.
OK or NG
OK >> GO TO 4.
NG >> Check the harness and repair the root cause.
Data link connector
Continuity
Connector No. Terminal No.
M22 6 14 No
Data link connector
GroundContinuity
Connector No. Terminal No.
M226No
14 No

TROUBLE DIAGNOSIS
LAN-81
[CAN]
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Revision: June 20062007 Versa
4. CHECK ECM AND IPDM E/R TERMINATION CIRCUIT
1. Remove the ECM and the IPDM E/R.
2. Check the resistance between the ECM terminals.
3. Check the resistance between the IPDM E/R terminals.
OK or NG
OK >> GO TO 5.
NG >> Replace the ECM and/or the IPDM E/R.
5. CHECK SYMPTOM
Connect all the connectors. Check if the symptoms described in the “Symptom (Results from interview with
customer)” are reproduced.
Inspection result
Reproduced>>GO TO 6.
Non-reproduced>>Start the diagnosis again. Follow the trouble diagnosis procedure when past error is
detected.
6. CHECK UNIT REPRODUCTION
Perform the reproduction test as per the following procedure for each unit.
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Disconnect one of the unit connectors of CAN communication system.
NOTE:
The ECM and the IPDM E/R have a termination circuit. Check other units first.
4. Connect the battery cable to the negative terminal. Check if the symptoms described in the “Symptom
(Results of interview with customer)” are reproduced.
NOTE:
Although unit-related error symptoms occur, do not confuse them with other symptoms.
Inspection result
Reproduced>>Connect the connector. Check other units as per the above procedure.
Non-reproduced>>Replace unit whose connector was disconnected.
ECM
Resistance (Ω)
Te r m i n a l N o .
84 83 Approx. 108 – 132
IPDM E/R
Resistance (Ω)
Te r m i n a l N o .
41 40 Approx. 108 – 132
LKIA0037E

LAN-82
[CAN]
TROUBLE DIAGNOSIS
Revision: June 20062007 Versa

LT-1
LIGHTING SYSTEM
K ELECTRICAL
CONTENTS
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SECTION LT
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Revision: June 20062007 Versa PRECAUTIONS .......................................................... 4
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 4
HEADLAMP (FOR USA) ............................................ 5
Component Parts and Harness Connector Location ..... 5
System Description .................................................. 5
OUTLINE ............................................................... 5
HEADLAMP OPERATION .................................... 6
COMBINATION SWITCH READING FUNCTION ..... 6
EXTERIOR LAMP BATTERY SAVER CONTROL ..... 6
CAN COMMUNICATION SYSTEM DESCRIP-
TION ......................................................................... 6
Schematic ................................................................ 7
Wiring Diagram ........................................................ 8
Terminals and Reference Values for BCM ............. 12
Terminals and Reference Values for IPDM E/R ..... 12
How to Perform Trouble Diagnoses ....................... 12
Preliminary Check .................................................. 12
CHECK POWER SUPPLY AND GROUND CIR-
CUIT FOR BCM .................................................. 12
CHECK POWER SUPPLY AND GROUND CIR-
CUIT FOR IPDM E/R .......................................... 12
CONSULT-II Function (BCM) ................................. 12
CONSULT-II START PROCEDURE .................... 12
WORK SUPPORT ............................................... 12
DATA MONITOR ................................................. 12
ACTIVE TEST ..................................................... 13
SELF-DIAGNOSTIC RESULTS .......................... 13
CONSULT-II Function (IPDM E/R) ......................... 13
CONSULT-II START PROCEDURE .................... 13
DATA MONITOR ................................................. 14
ACTIVE TEST ..................................................... 14
Headlamp High Beam Does Not Illuminate (Both
Sides) ..................................................................... 14
Headlamp High Beam Does Not Illuminate (One
Side) ....................................................................... 17
High Beam Indicator Lamp Does Not Illuminate .... 18
Headlamp Low Beam Does Not Illuminate (Both
Sides) ..................................................................... 18Headlamp Low Beam Does Not Illuminate (One
Side) ....................................................................... 21
Headlamps Do Not Turn OFF ................................. 22
Aiming Adjustment .................................................. 23
PREPARATION BEFORE ADJUSTING .............. 23
LOW BEAM AND HIGH BEAM ........................... 23
ADJUSTMENT USING AN ADJUSTMENT
SCREEN (LIGHT/DARK BORDERLINE) ............ 24
Bulb Replacement .................................................. 25
HEADLAMP (HIGH/LOW) ................................... 25
PARKING (CLEARANCE) LAMP ........................ 25
FRONT TURN SIGNAL LAMP ............................ 25
Removal and Installation ........................................ 25
REMOVAL ........................................................... 25
INSTALLATION ................................................... 25
Disassembly and Assembly .................................... 26
DISASSEMBLY ................................................... 26
ASSEMBLY ......................................................... 26
HEADLAMP (FOR CANADA) - DAYTIME LIGHT
SYSTEM - .................................................................. 27
Component Parts and Harness Connector Location ... 27
System Description ................................................. 27
OUTLINE ............................................................. 27
HEADLAMP OPERATION ................................... 28
COMBINATION SWITCH READING FUNCTION ... 29
EXTERIOR LAMP BATTERY SAVER CONTROL ... 29
CAN Communication System Description .............. 29
Schematic ............................................................... 30
Wiring Diagram — DTRL — ................................... 31
Terminals and Reference Values for BCM .............. 35
Terminals and Reference Values for IPDM E/R ...... 35
How to Perform Trouble Diagnoses ....................... 35
Preliminary Check .................................................. 35
CHECK BCM CONFIGURATION ........................ 35
CHECK POWER SUPPLY AND GROUND CIR-
CUIT FOR BCM .................................................. 35
CHECK POWER SUPPLY AND GROUND CIR-
CUIT FOR IPDM E/R .......................................... 35
CONSULT-II Function (BCM) ................................. 35
CONSULT-II Function (IPDM E/R) ......................... 35

LT-2Revision: June 20062007 Versa Daytime Light Control Does Not Operate Properly
(High Beam Headlamps Operate Properly) ............ 35
Aiming Adjustment .................................................. 37
PREPARATION BEFORE ADJUSTING .............. 37
LOW BEAM AND HIGH BEAM ........................... 37
ADJUSTMENT USING AN ADJUSTMENT
SCREEN (LIGHT/DARK BORDERLINE) ............ 38
Bulb Replacement .................................................. 39
HEADLAMP (HIGH/LOW) ................................... 39
PARKING (CLEARANCE) LAMP ......................... 39
FRONT TURN SIGNAL LAMP ............................ 39
Removal and Installation ........................................ 39
REMOVAL ........................................................... 39
INSTALLATION .................................................... 39
Disassembly and Assembly .................................... 40
DISASSEMBLY ................................................... 40
ASSEMBLY ......................................................... 40
FRONT FOG LAMP .................................................. 41
Component Parts and Harness Connector Location ... 41
System Description ................................................. 41
OUTLINE ............................................................. 41
FOG LAMP OPERATION .................................... 42
COMBINATION SWITCH READING FUNCTION ... 42
EXTERIOR LAMP BATTERY SAVER CONTROL ... 42
CAN Communication System Description .............. 42
Wiring Diagram — F/FOG — .................................. 43
Terminals and Reference Values for BCM .............. 45
Terminals and Reference Values for IPDM E/R ...... 45
How to Proceed With Trouble Diagnosis ................ 45
Preliminary Check .................................................. 45
CHECK POWER SUPPLY AND GROUND CIR-
CUIT FOR BCM ................................................... 45
CHECK POWER SUPPLY AND GROUND CIR-
CUIT FOR IPDM E/R ........................................... 45
CONSULT-II Function (BCM) .................................. 45
CONSULT-II Function (IPDM E/R) .......................... 45
Front Fog lamps Do Not Illuminate (Both Sides) .... 45
Front Fog Lamp Does Not Illuminate (One Side) ... 48
Aiming Adjustment .................................................. 49
Bulb Replacement .................................................. 49
Removal and Installation ........................................ 50
REMOVAL ........................................................... 50
INSTALLATION .................................................... 50
TURN SIGNAL AND HAZARD WARNING LAMPS ... 51
Component Parts and Harness Connector Location ... 51
System Description ................................................. 51
TURN SIGNAL OPERATION ............................... 51
HAZARD LAMP OPERATION ............................. 52
REMOTE KEYLESS ENTRY SYSTEM OPERA-
TION .................................................................... 53
COMBINATION SWITCH READING FUNCTION ... 53
CAN Communication System Description .............. 53
Schematic ............................................................... 54
Wiring Diagram — TURN — ................................... 55
Terminals and Reference Values for BCM .............. 59
How to Proceed With Trouble Diagnosis ................ 59
Preliminary Check .................................................. 59
CHECK POWER SUPPLY AND GROUND CIR-
CUIT FOR BCM ................................................... 59CONSULT-II Function (BCM) ..................................59
Turn Signals Do Not Operate ..................................59
Front Turn Signal Lamp Does Not Operate ............59
Rear Turn Signal Lamp Does Not Operate .............60
Hazard Warning Lamp Does Not Operate But Turn
Signal Lamp Operates ............................................62
Turn Signal Indicator Lamp Does Not Operate .......63
Bulb Replacement of Front Turn Signal Lamp ........64
Bulb Replacement of Rear Turn Signal Lamp .........64
Removal and Installation of Front Turn Signal Lamp ...64
Removal and Installation of Rear Turn Signal Lamp ...64
LIGHTING AND TURN SIGNAL SWITCH ................65
Removal and Installation .........................................65
REMOVAL ............................................................65
INSTALLATION ....................................................65
HAZARD SWITCH .....................................................66
Removal and Installation .........................................66
REMOVAL ............................................................66
INSTALLATION ....................................................66
COMBINATION SWITCH ..........................................67
Wiring Diagram — COMBSW — ............................67
Combination Switch Reading Function ...................68
Terminals and Reference Values for BCM ..............68
CONSULT-II Function (BCM) ..................................68
Combination Switch Inspection ...............................68
Removal and Installation .........................................70
STOP LAMP ..............................................................71
Wiring Diagram — STOP/L — ................................71
Bulb Replacement of High-Mounted Stop Lamp .....72
Bulb Replacement of Rear Combination Lamp for
Stop Lamp ...............................................................72
Removal and Installation of High-Mounted Stop
Lamp .......................................................................72
REMOVAL ............................................................72
INSTALLATION ....................................................72
Removal and Installation of Rear Combination
Lamp for Stop Lamp ................................................72
BACK-UP LAMP .......................................................73
Wiring Diagram — BACK/L — ................................73
Bulb Replacement ...................................................74
Removal and Installation .........................................74
PARKING, LICENSE PLATE AND TAIL LAMPS ......75
Component Parts and Harness Connector Location ...75
System Description .................................................75
OPERATION BY LIGHTING SWITCH .................75
COMBINATION SWITCH READING FUNCTION ...76
EXTERIOR LAMP BATTERY SAVER CONTROL ...76
CAN Communication System Description ..............76
Schematic ...............................................................77
Wiring Diagram — TAIL/L — ...................................78
Terminals and Reference Values for BCM ..............81
Terminals and Reference Values for IPDM E/R ......81
How to Proceed With Trouble Diagnosis ................81
Preliminary Check ...................................................81
CHECK POWER SUPPLY AND GROUND CIR-
CUIT FOR BCM ...................................................81
CHECK POWER SUPPLY AND GROUND CIR-
CUIT FOR IPDM E/R ...........................................81
CONSULT-II Function (BCM) ..................................81