2007 NISSAN LATIO Lan system

SC-1
STARTING & CHARGING SYSTEM
K ELECTRICAL
CONTENTS
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SECTION SC
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B
SC
Revision: June 20062007 Versa PRECAUTIONS .......................................................... 2
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 2
PREPARATION ........................................................... 3
Special Service Tool ................................................. 3
Commercial Service Tools ........................................ 3
BATTERY .................................................................... 4
How to Handle Battery ............................................. 4
METHODS OF PREVENTING OVER-DIS-
CHARGE ............................................................... 4
CHECKING ELECTROLYTE LEVEL .................... 4
SPECIFIC GRAVITY CHECK ............................... 5
CHARGING THE BATTERY ................................. 6
Trouble Diagnoses with Battery/Starting/Charging
System Tester .......................................................... 6
DIAGNOSTIC RESULT ITEM CHART .................. 8
Removal and Installation .......................................... 9
REMOVAL ............................................................. 9
INSTALLATION ..................................................... 9
STARTING SYSTEM ................................................ 10
System Description ................................................ 10
M/T MODELS ...................................................... 10
A/T MODELS ...................................................... 10
CVT MODELS ......................................................11
Wiring Diagram — START — ................................. 12
M/T MODELS ...................................................... 12
A/T MODELS ...................................................... 14
CVT MODELS ..................................................... 16
Trouble Diagnoses with Battery/Starting/Charging System Tester ......................................................... 18
DIAGNOSTIC RESULT ITEM CHART ................ 18
WORK FLOW ...................................................... 19
DIAGNOSTIC PROCEDURE 1 ........................... 20
DIAGNOSTIC PROCEDURE 2 ........................... 21
MINIMUM SPECIFICATION OF CRANKING
VOLTAGE REFERENCING COOLANT TEM-
PERATURE ......................................................... 22
Removal and Installation ........................................ 23
REMOVAL ........................................................... 23
INSTALLATION ................................................... 23
CHARGING SYSTEM ............................................... 24
System Description ................................................. 24
Wiring Diagram — CHARGE — ............................. 25
Trouble Diagnoses with Battery/Starting/Charging
System Tester ......................................................... 26
DIAGNOSTIC RESULT ITEM CHART ................ 27
WORK FLOW ...................................................... 28
DIAGNOSTIC PROCEDURE 1 ........................... 29
DIAGNOSTIC PROCEDURE 2 ........................... 30
DIAGNOSTIC PROCEDURE 3 ........................... 31
Removal and Installation ........................................ 32
REMOVAL ........................................................... 32
GENERATOR PULLEY INSPECTION ................ 32
INSTALLATION ................................................... 32
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 33
Battery .................................................................... 33
Starter ..................................................................... 33
Alternator ................................................................ 33

STARTING SYSTEM
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Revision: June 20062007 Versa
WORK FLOW
*1SC-6, "Trouble Diagnoses with Bat-
tery/Starting/Charging System
Te s t e r"
*2SC-22, "MINIMUM SPECIFICATION
OF CRANKING VOLTAGE REFER-
ENCING COOLANT TEMPERA-
TURE"
*3SC-20, "Check Starter Motor Circuit"
*4SC-21, "Check Magnetic Switch Cir-
cuit"
WKIA4532E

SC-22
STARTING SYSTEM
Revision: June 20062007 Versa
MINIMUM SPECIFICATION OF CRANKING VOLTAGE REFERENCING COOLANT TEMPERA-
TURE
Engine coolant temperature Voltage V
−30°C to −20°C (−22°F to −4°F) 8.4
−19°C to −10°C (−2°F to 14°F) 8.9
−9°C to 0°C (16°F to 32°F) 9.3
More than 1°C (More than 34°F) 9.7

TROUBLE DIAGNOSIS
SRS-23
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SRS
Revision: June 20062007 Versa
Trouble Diagnosis With CONSULT-IIEHS001V4
DIAGNOSTIC PROCEDURE 2
Refer to GI-38, "CONSULT-II Start Procedure" .
Diagnostic code is displayed on "SELF-DIAG [CURRENT]".
If no malfunction is detected on "SELF-DIAG [CURRENT]", but mal-
function is detected in "SRS Operation Check", the following cases
may exist:

"SELF-DIAG [PAST]" memory might not be erased.

The SRS system malfunctions intermittently.
Refer to SRS-29, "
DIAGNOSTIC PROCEDURE 4"
CONSULT-II Diagnostic Code Chart ("SELF-DIAG [CURRENT]")
WHIA0151E
SRS7 01
Diagnostic item ExplanationRepair order
Recheck SRS at each replacement
NO DTC IS DETECTEDMalfunction is indi-
cated by the “AIR
BAG” warning lamp in
User mode.Low battery voltage (Less than 9V) 1. Go to SC-4, "
BATTERY"
2. Go to SRS-27, "DIAGNOSTIC PRO-
CEDURE 3" .
“SELF-DIAG [PAST]” memory might
not be erased.Go to SRS-29, "
DIAGNOSTIC PRO-
CEDURE 4" .
Intermittent malfunction has been
detected in the past.Go to SRS-29, "
DIAGNOSTIC PRO-
CEDURE 5" .
No malfunction is detected in User mode. —
DRIVER AIRBAG MODULE
[OPEN]
[B1049] or [B1054]Driver air bag module circuit is open (including the spiral
cable).1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace driver air bag module.
4. Replace the spiral cable.
5. Replace the air bag diagnosis sen-
sor unit.
6. Replace the related harness. DRIVER AIRBAG MODULE
[VB-SHORT]
[B1050] or [B1055]Driver air bag module circuit is shorted to some power supply
circuit (including the spiral cable).
DRIVER AIRBAG MODULE
[GND-SHORT]
[B1051] or [B1056]Driver air bag module circuit is shorted to ground (including
the spiral cable).
DRIVER AIRBAG MODULE
[SHORT]
[B1052] or [B1057]Driver air bag module circuits are shorted to each other.

SRS-26
TROUBLE DIAGNOSIS
Revision: June 20062007 Versa
CURTAIN MODULE RH
[OPEN]
[B1145]The RH side curtain air bag module circuit is open. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace RH side curtain air bag
module.
4. Replace the air bag diagnosis sen-
sor unit.
5. Replace the related harness. CURTAIN MODULE RH
[VB-SHORT]
[B1146]The RH side curtain air bag module circuit is shorted to some
power supply circuits.
CURTAIN MODULE RH
[GND-SHORT]
[B1147]The RH side curtain air bag module circuit is shorted to
ground.
CURTAIN MODULE RH
[SHORT]
[B1148]The circuits for the RH side curtain air bag module are
shorted to each other.
CONTROL UNIT
[B1XXX]Air bag diagnosis sensor unit is malfunctioning. 1. Visually check the wiring harness
connection.
2. Replace the air bag diagnosis sen-
sor unit.
OCCUPANT SENS C/U
[UNIT FAIL]
[B1017], [B1020] or [B1021]Occupant classification system is malfunctioning. 1. Replace RH front seat cushion/
occupant classification system con-
trol unit assembly.
OCCUPANT SENS C/U
[COMM FAIL]
[B1022]Communication between the occupant classification system
control unit and air bag diagnosis sensor unit is interrupted.1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace RH front seat cushion/
occupant classification system con-
trol unit assembly.
4. Replace the air bag diagnosis sen-
sor unit.
5. Replace the related harness.
OCCUPANT SENS
[UNIT FAIL]
[B1018]Occupant classification sensor is malfunctioning. 1. Replace RH front seat cushion/
occupant classification system con-
trol unit assembly.
BELT TENSION SENS
[UNIT FAIL]
[B1019]Belt tension sensor is malfunctioning. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace RH front seat belt assem-
bly.
4. Replace RH front seat cushion/
occupant classification system con-
trol unit assembly.
PASS A/B INDCTR CKT
[B1023]Front passenger air bag off indicator is malfunctioning. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace front passenger air bag off
indicator.
4. Replace the air bag diagnosis sen-
sor unit.
5. Replace the related harness. Diagnostic item ExplanationRepair order
Recheck SRS at each replacement

TROUBLE DIAGNOSIS
SRS-27
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SRS
Revision: June 20062007 Versa
NOTE:
Follow the procedures in numerical order when performing repairs. Confirm whether the repair has been suc-
cessful using air bag warning lamp or CONSULT-II after each repair. If malfunction is still observed, proceed to
the next step. When malfunction has been eliminated, further repair work is not required.
DIAGNOSTIC PROCEDURE 3
Final Check of SRS Using CONSULT-II—Diagnosis Mode
Refer to GI-38, "CONSULT-II Start Procedure" .
1. If no DTC is detected on “SELF-DIAG [CURRENT]”, repair of
SRS is completed. Go to step 2.
If any DTC is detected on “SELF-DIAG [CURRENT]”, the mal-
functioning part has not been repaired completely or another
malfunctioning part is being detected. Go to SRS-23, "
DIAG-
NOSTIC PROCEDURE 2" .
2. Touch “ERASE”.
NOTE:
Touch “ERASE” to clear the memory of the malfunction
(“SELF-DIAG [PAST]”).
If the memory of the malfunction in “SELF-DIAG [PAST]” is not
erased, the User mode shows the system malfunction by the
operation of the warning lamp even if the malfunction is repaired
completely.
3. Touch “BACK” key of CONSULT-II to “SELECT DIAG MODE”
screen. Touch “SELF-DIAG [PAST]”.
FRONTAL COLLISION
DETECTION
[B1209]Driver and front passenger air bag modules are deployed. Refer to SRS-54, "COLLISION DIAG-
NOSIS" .
SIDE COLLISION
DETECTION
[B1210]Side or curtain air bag modules are deployed. Diagnostic item ExplanationRepair order
Recheck SRS at each replacement
SRS7 01
WHIA0151E
BCIA0031E

SRS-30
TROUBLE DIAGNOSIS
Revision: June 20062007 Versa
3. Diagnostic code is displayed on “TROUBLE DIAG RECORD”.
4. Touch “PRINT”.
5. Compare diagnostic codes to SRS-30, "
CONSULT-II Diagnostic
Code Chart ("SELF-DIAG [PAST]" or "TROUBLE DIAG
RECORD")" .
6. Touch “BACK” key of CONSULT-II until “SELECT SYSTEM”
appears.
7. Turn ignition switch OFF, then turn off and disconnect CON-
SULT-II, and both battery cables.
8. Repair the system as outlined by the “Repair order” in “Intermit-
tent Malfunction Diagnostic Code Chart”, that corresponds to the
self-diagnostic result. For replacement procedure of component parts, refer to the Removal and Installa-
tion procedure for the appropriate component.
9. Go to SRS-27, "
DIAGNOSTIC PROCEDURE 3" , for final checking.
CONSULT-II Diagnostic Code Chart ("SELF-DIAG [PAST]" or "TROUBLE DIAG RECORD")
WHIA0153E
Diagnostic item ExplanationRepair order
Recheck SRS at each replacement
NO DTC IS DETECTEDWhen malfunction is
indicated by the “AIR
BAG” warning lamp in
User mode.

Low battery voltage (Less than
9V)
Go to SRS-27, "DIAGNOSTIC PRO-
CEDURE 3" .

Self-diagnostic result “SELF-DIAG
[PAST]” (previously stored in the
memory) might not be erased
after repair.

Intermittent malfunction has been
detected in the past.

Go to SRS-29, "DIAGNOSTIC PRO-
CEDURE 4" .

Go to SRS-29, "DIAGNOSTIC PRO-
CEDURE 5" .

No malfunction is detected. —
DRIVER AIRBAG MODULE
[OPEN]
[B1049] or [B1054]Driver air bag module circuit is open (including the spiral
cable).1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace driver air bag module.
4. Replace the spiral cable.
5. Replace the air bag diagnosis sen-
sor unit.
6. Replace the related harness. DRIVER AIRBAG MODULE
[VB-SHORT]
[B1050] or [B1055]Driver air bag module circuit is shorted to some power supply
circuit (including the spiral cable).
DRIVER AIRBAG MODULE
[GND-SHORT]
[B1051] or [B1056]Driver air bag module circuit is shorted to ground (including
the spiral cable).
DRIVER AIRBAG MODULE
[SHORT]
[B1052] or [B1057]Driver air bag module circuits are shorted to each other.
ASSIST A/B MODULE
[OPEN]
[B1065] or [B1070]Front passenger air bag module circuit is open. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace front passenger air bag
module.
4. Replace the air bag diagnosis sen-
sor unit.
5. Replace the related harness. ASSIST A/B MODULE
[VB-SHORT]
[B1066] or [B1071]Front passenger air bag module circuit is shorted to some
power supply circuit.
ASSIST A/B MODULE
[GND-SHORT]
[B1067] or [B1072]Front passenger air bag module circuit is shorted to ground.
ASSIST A/B MODULE
[SHORT]
[B1068] or [B1073]Front passenger air bag module circuits are shorted to each
other.

SRS-32
TROUBLE DIAGNOSIS
Revision: June 20062007 Versa
PRE-TEN FRONT LH
[OPEN]
[B1086]The circuit for front LH seat belt pre-tensioner is open. 1. Visually check the wiring harness
connections.
2. Replace the harness if it has visible
damage.
3. Replace front LH seat belt pre-ten-
sioner.
4. Replace the air bag diagnosis sen-
sor unit.
5. Replace the related harness. PRE-TEN FRONT LH
[VB-SHORT]
[B1087]The circuit for front LH seat belt pre-tensioner is shorted to
some power supply circuit.
PRE-TEN FRONT LH
[GND-SHORT]
[B1088]The circuit for front LH seat belt pre-tensioner is shorted to
ground.
PRE-TEN FRONT LH
[SHORT]
[B1089]The circuits for the front LH seat belt pre-tensioner are
shorted to each other.
PRE-TEN FRONT RH
[OPEN]
[B1081]The circuit for front RH seat belt pre-tensioner is open. 1. Visually check the wiring harness
connections.
2. Replace the harness if it has visible
damage.
3. Replace front RH seat belt pre-ten-
sioner.
4. Replace the air bag diagnosis sen-
sor unit.
5. Replace the related harness. PRE-TEN FRONT RH
[VB-SHORT]
[B1082]The circuit for front RH seat belt pre-tensioner is shorted to
some power supply circuit.
PRE-TEN FRONT RH
[GND-SHORT]
[B1083]The circuit for front RH seat belt pre-tensioner is shorted to
ground.
PRE-TEN FRONT RH
[SHORT]
[B1084]The circuits for the front RH seat belt pre-tensioner are
shorted to each other.
CURTAIN MODULE LH
[OPEN]
[B1150]The LH side curtain air bag module circuit is open. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace LH side curtain air bag
module.
4. Replace the air bag diagnosis sen-
sor unit.
5. Replace the related harness. CURTAIN MODULE LH
[VB-SHORT]
[B1151]The LH side curtain air bag module circuit is shorted to some
power supply circuits.
CURTAIN MODULE LH
[GND-SHORT]
[B1152]The LH side curtain air bag module circuit is shorted to
ground.
CURTAIN MODULE LH
[SHORT]
[B1153]The circuits for the LH side curtain air bag module are
shorted to each other.
CURTAIN MODULE RH
[OPEN]
[B1145]The RH side curtain air bag module circuit is open. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace RH side curtain air bag
module.
4. Replace the air bag diagnosis sen-
sor unit.
5. Replace the related harness. CURTAIN MODULE RH
[VB-SHORT]
[B1146]The RH side curtain air bag module circuit is shorted to some
power supply circuits.
CURTAIN MODULE RH
[GND-SHORT]
[B1147]The RH side curtain air bag module circuit is shorted to
ground.
CURTAIN MODULE RH
[SHORT]
[B1148]The circuits for the RH side curtain air bag module are
shorted to each other.
CONTROL UNIT
[B1XXX]Air bag diagnosis sensor unit is malfunctioning. 1. Visually check the wiring harness
connection.
2. Replace the air bag diagnosis sen-
sor unit.
OCCUPANT SENS C/U
[UNIT FAIL]
[B1017], [B1020] or [B1021]Occupant classification system is malfunctioning. 1. Replace RH front seat cushion/
occupant classification system con-
trol unit assembly. Diagnostic item ExplanationRepair order
Recheck SRS at each replacement