2006 NISSAN VERSA wiring

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.

TROUBLE DIAGNOSIS
SRS-31
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SRS
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CRASH ZONE SEN
[UNIT FAIL]
[B1033] or [B1034]
CRASH ZONE SEN
[COMM FAIL]
[B1035]Crash zone sensor 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace the crash zone sensor.
4. Replace the air bag diagnosis sen-
sor unit.
5. Replace the related harness.
SIDE MODULE LH
[OPEN]
[B1134]Front LH side 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 LH seat back assem-
bly (front LH side air bag module).
4. Replace the air bag diagnosis sen-
sor unit.
5. Replace the related harness. SIDE MODULE LH
[VB-SHORT]
[B1135]Front LH side air bag module circuit is shorted to some power
supply circuit.
SIDE MODULE LH
[GND-SHORT]
[B1136]Front LH side air bag module circuit is shorted to ground.
SIDE MODULE LH
[SHORT]
[B1137]Front LH side air bag module circuits are shorted to each
other.
SIDE MODULE RH
[OPEN]
[B1129]Front RH side 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 RH seat back assem-
bly (front RH side air bag module).
4. Replace the air bag diagnosis sen-
sor unit.
5. Replace the related harness. SIDE MODULE RH
[VB-SHORT]
[B1130]Front RH side air bag module circuit is shorted to some
power supply circuit.
SIDE MODULE RH
[GND-SHORT]
[B1131]Front RH side air bag module circuit is shorted to ground.
SIDE MODULE RH
[SHORT]
[B1132]Front RH side air bag module circuits are shorted to each
other.
SATELLITE SENS LH
[UNIT FAIL]
[B1118] or [B1119]
SATELLITE SENS LH
[COMM FAIL]
[B1120]LH side air bag (satellite) sensor 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace the LH side air bag (satel-
lite) sensor.
4. Replace the air bag diagnosis sen-
sor unit.
5. Replace the related harness.
SATELLITE SENS RH
[UNIT FAIL]
[B1113] or [B1114]
SATELLITE SENS RH
[COMM FAIL]
[ B 111 5 ]RH side air bag (satellite) sensor 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
3. Replace the RH side air bag (satel-
lite) sensor.
4. Replace the air bag diagnosis sen-
sor unit.
5. Replace the related harness. Diagnostic item ExplanationRepair order
Recheck SRS at each replacement

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

TROUBLE DIAGNOSIS
SRS-33
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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.
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.
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

TROUBLE DIAGNOSIS
SRS-39
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SRS
Revision: June 20062007 Versa
Trouble Diagnosis: “AIR BAG” Warning Lamp Does Not Turn OffEHS001V6
DIAGNOSTIC PROCEDURE 7
1. CHECK CONDITION OF AIR BAG MODULE
Inspect for any deployed air bag modules or seat belt pre-tensioners.
Are any air bag modules or seat belt pre-tensioners deployed?
Yes >> Refer to SRS-54, "COLLISION DIAGNOSIS" .
No >> GO TO 2.
2. CHECK THE AIR BAG FUSE
Check 10A fuse [No. 1, located in the fuse block (J/B)].
Refer to PG-4, "
POWER SUPPLY ROUTING CIRCUIT" .
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3. CHECK AIR BAG FUSE AGAIN
Replace 10A fuse [No. 1, located in the fuse block (J/B)] and turn ignition switch ON.
Does the fuse blow again?
Yes >> Repair harness.
No >> Inspection End.
4. CHECK AIR BAG DIAGNOSIS SENSOR UNIT
Connect CONSULT-II and touch “START”.
Is
“AIR BAG” displayed on CONSULT-II?
Yes >> GO TO 5.
No >> Visually inspect the air bag diagnosis sensor unit har-
ness connections. If the connections are OK, replace
the air bag diagnosis sensor unit. Refer to SRS-52,
"Removal and Installation" .
5. CHECK HARNESS CONNECTION
Check for loose connections between the combination meter and the air bag diagnosis sensor unit.
OK or NG
OK >> Replace air bag diagnosis sensor unit. Refer to SRS-52, "Removal and Installation" .
NG >> Properly connect the combination meter and air bag diagnosis sensor unit harness connectors. If
“AIR BAG” warning lamp still does not turn off, replace the wiring harness.
BCIA0030E

STC-1
STEERING CONTROL SYSTEM
G STEERING
CONTENTS
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SECTION STC
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STC
Revision: June 20062007 Versa
EPS
PRECAUTIONS .......................................................... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
Precautions Necessary for Steering Wheel Rotation
After Battery Disconnect .......................................... 3
OPERATION PROCEDURE ................................. 3
Service Notice or Precautions for EPS System ....... 4
EPS SYSTEM ............................................................. 5
System Description .................................................. 5
EPS CONTROL UNIT ........................................... 5
EPS MOTOR ......................................................... 5
TORQUE SENSOR ............................................... 5
REDUCTION GEAR .............................................. 5
EPS WARNING LAMP .......................................... 5
System Diagram ....................................................... 6
COMPONENTS FUNCTION DESCRIPTION ....... 6
CAN Communication ................................................ 6
SYSTEM DESCRIPTION ...................................... 6
TROUBLE DIAGNOSIS .............................................. 7
Fail-Safe Function .................................................... 7
How to Perform Trouble Diagnosis .......................... 7
BASIC CONCEPT ................................................. 7
PRECAUTIONS FOR TROUBLE DIAGNOSIS ..... 7
INTERVIEW .......................................................... 7
Component Parts Location ....................................... 8
Wiring Diagram — EPS — ....................................... 9
EPS Control Unit Input/Output Signal Reference
Values .....................................................................11
SPECIFICATIONS WITH CONSULT-II ................11
SPECIFICATIONS BETWEEN EPS CONTROL
UNIT TERMINALS .............................................. 12
CONSULT-II Function (EPS) .................................. 13
FUNCTION .......................................................... 13
CONSULT-II SETTING PROCEDURE ................ 13
SELF-DIAG RESULTS MODE ............................ 13
DATA MONITOR ................................................. 14
EPS CONTROL UNIT PART NUMBER .............. 14
Symptom Chart ...................................................... 15TROUBLE DIAGNOSIS FOR SYSTEM .................... 16
DTC C1601 BATTERY VOLT ................................. 16
CONSULT-II REFERENCE VALUE IN DATA
MONITOR MODE ................................................ 16
EPS CONTROL UNIT TERMINALS AND REF-
ERENCE VALUE ................................................. 16
DIAGNOSTIC PROCEDURE .............................. 17
DTC C1604 TORQUE SENSOR ............................ 19
CONSULT-II REFERENCE VALUE IN DATA
MONITOR MODE ................................................ 19
EPS CONTROL UNIT TERMINALS AND REF-
ERENCE VALUE ................................................. 19
DIAGNOSTIC PROCEDURE .............................. 19
DTC C1606 EPS MOTOR ...................................... 21
CONSULT-II REFERENCE VALUE IN DATA
MONITOR MODE ................................................ 21
EPS CONTROL UNIT TERMINALS AND REF-
ERENCE VALUE ................................................. 21
DIAGNOSTIC PROCEDURE .............................. 21
DTC C1607 EEPROM ............................................ 22
DIAGNOSTIC PROCEDURE .............................. 22
DTC C1608 CONTROL UNIT ................................. 22
DIAGNOSTIC PROCEDURE .............................. 22
DTC C1609 CAN VHCL SPEED ............................ 23
CONSULT-II REFERENCE VALUE IN DATA
MONITOR MODE ................................................ 23
DIAGNOSTIC PROCEDURE .............................. 23
DTC C1610 CAN ENG RPM .................................. 24
CONSULT-II REFERENCE VALUE IN DATA
MONITOR MODE ................................................ 24
DIAGNOSTIC PROCEDURE .............................. 24
DTC U1000 CAN COMM CIRCUIT ........................ 24
DIAGNOSTIC PROCEDURE .............................. 24
Component Inspection ............................................ 25
EPS MOTOR ....................................................... 25
TROUBLE DIAGNOSIS FOR SYMPTOMS .............. 26
EPS Warning Lamp Does Not Turn ON ................. 26
SYMPTOM: ......................................................... 26
DIAGNOSTIC PROCEDURE .............................. 26
EPS Warning Lamp Does Not Turn OFF ................ 27

PRECAUTIONS
STC-3
[EPS]
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PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
UGS000A8
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WA RN ING:

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions Necessary for Steering Wheel Rotation After Battery DisconnectUGS000A9
NOTE:

This Procedure is applied only to models with Intelligent Key system and NVIS/IVIS (NISSAN/INFINITI
VEHICLE IMMOBILIZER SYSTEM - NATS).

Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK″ position.

Always use CONSULT-II to perform self-diagnosis as a part of each function inspection after finishing
work. If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NVIS/IVIS, an electrically controlled steering lock
mechanism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
5. When the repair work is completed, return the ignition switch to the ″LOCK″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of all control units using CONSULT-II.

STC-6
[EPS]
EPS SYSTEM
Revision: June 20062007 Versa
System DiagramUGS000A6
COMPONENTS FUNCTION DESCRIPTION
CAN CommunicationUGS000A7
SYSTEM DESCRIPTION
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
For details, refer to LAN-47, "
CAN System Specification Chart" .
WGIA0187E
Component parts Function
EPS control unit
(Electric power steering control unit)

Outputs optimum assist torque signal to EPS motor.

Reduces output signals to EPS motor and protects EPS motor and EPS control unit when
using power steering continuously and excessively.

As a fail-safe function, turned off output signal to EPS motor and then enters a manual steer-
ing state, if malfunction is detected in EPS system.
EPS motor Products assist torque by control signal from EPS control unit.
Torque sensor Detects steering wheel turning force and outputs sensor signal to EPS control unit.
Reduction gear Increases motor-produced assist torque by worm gear and transmits it to column shaft.
EPS warning lamp Illuminates if malfunction is detected in electrical system of EPS system.
ECMTransmits the following signals via CAN communication to EPS control unit.

Engine status signal
ABS actuator and electric unit (con-
trol unit) (With ABS)Transmits the following signals via CAN communication to EPS control unit.

Vehicle speed signal
Combination meterTransmits the following signals via CAN communication to EPS control unit.

Vehicle speed signal
TCM (Without ABS)Transmits the following signals via CAN communication to EPS control unit.

Vehicle speed signal