2006 NISSAN VERSA ECU

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QUICK REFERENCE INDEX
AGENERAL INFORMATIONGIGeneral Information
BENGINEEMEngine Mechanical
LUEngine Lubrication System
COEngine Cooling System
ECEngine Control System
FLFuel System
EXExhaust System
ACCAccelerator Control System
CTRANSMISSION/
TRANSAXLECLClutch System
MTManual Transaxle
ATAutomatic Transaxle
CVTCVT
DDRIVELINE/AXLEFAXFront Axle
RAXRear Axle
ESUSPENSIONFSUFront Suspension
RSURear Suspension
WTRoad Wheels & Tires
FBRAKESBRBrake System
PBParking Brake System
BRCBrake Control System
GSTEERINGPSPower Steering System
STCSteering Control System
HRESTRAINTSSBSeat Belts
SRSSupplemental Restraint System (SRS)
IBODYBLBody, Lock & Security System
GWGlasses, Window System & Mirrors
RFRoof
EIExterior & Interior
IPInstrument Panel
SESeat
JAIR CONDITIONERMTCManual Air Conditioner
KELECTRICALSCStarting & Charging System
LTLighting System
DIDriver Information System
WWWiper, Washer & Horn
BCSBody Control System
LANLAN System
AVAudio Visual, Navigation & Telephone System
ACSAuto Cruise Control System
PGPower Supply, Ground & Circuit Elements
LMAINTENANCEMAMaintenance
MINDEXIDXAlphabetical Index
Edition: June 2006
Revision: June 2006
Publication No. SM7E-1C11U0
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© 2006 NISSAN NORTH AMERICA, INC.
All rights reserved. No part of this Service Manual may be reproduced or stored in a retrieval system, or transmitted in any
form, or by any means, electronic, mechanical, photo-copying, recording or otherwise, without the prior written permission
of Nissan North America Inc.
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ACCELERATOR CONTROL SYSTEM
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ACC
Revision: June 20062007 Versa
ACCELERATOR CONTROL SYSTEMPFP:18005
ComponentsEBS00TSU
Removal and InstallationEBS00TSV
CAUTION:

Do not disassemble accelerator pedal assembly. Do not remove accelerator pedal position sensor
from accelerator pedal assembly.

Avoid impact from dropping etc. during handling.

Be careful to keep accelerator pedal assembly away from water.
REMOVAL
1. Disconnect the negative battery terminal.
2. Disconnect accelerator pedal position sensor harness connector.
3. Loosen mounting bolts, and remove accelerator pedal assembly.
INSTALLATION
Note the following, and install in the reverse order of removal.

Insert locating pin into vehicle side to position accelerator pedal assembly. Install mounting bolt to acceler-
ator pedal assembly.

Align the stud bolt on the floor with the thread hole to insert accelerator pedal stopper until it contacts the
face.
INSPECTION AFTER INSTALLATION

Make sure that the accelerator pedal moves smoothly within the whole operation range.

Make sure that the accelerator pedal securely returns to the original position.
1. Accelerator pedal assembly 2. Locating pin 3. Accelerator pedal stopper
: Vehicle front
PBIC3813E

AT-8
PRECAUTIONS
Revision: June 20062007 Versa
Precautions for On Board Diagnostic (OBD) System of A/T and EngineUCS005M 2
The ECM has an on board diagnostic system. It will light up the malfunction indicator lamp (MIL) to warn the
driver of a malfunction causing emission deterioration.
CAUTION:

Be sure to turn the ignition switch OFF and disconnect battery negative cable from battery nega-
tive terminal before any repair or inspection work. The open/short circuit of related switches, sen-
sors, solenoid valves, etc. will cause the MIL to light up.

Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MIL to light up due to an open circuit. (Be sure the connectors are free from water,
grease, dirt, bent terminals, etc.)

Be sure to route and secure the harnesses properly after work. Interference of the harness with a
bracket, etc. may cause the MIL to light up due to a short circuit.

Be sure to erase the unnecessary malfunction information (repairs completed) from the TCM and
ECM before returning the vehicle to the customer.
PrecautionsUCS005M 3

Before connecting or disconnecting the TCM harness con-
nector, turn ignition switch OFF and disconnect the battery
cable from the negative terminal. Failure to do so may dam-
age the TCM. Because battery voltage is applied to TCM
even if ignition switch is turned off.

When connecting or disconnecting pin connectors into or
from TCM, take care not to damage pin terminals (bend or
break).
Make sure that there are not any bends or breaks on TCM
pin terminal, when connecting pin connectors.

Before replacing TCM, perform TCM input/output signal
inspection and make sure whether TCM functions properly
or not. (See page AT- 7 8 , "
TCM Terminals and Reference
Va l u e".)

After performing each TROUBLE DIAGNOSIS, perform
“DTC (Diagnostic Trouble Code) Confirmation Procedure”.
The DTC should not be displayed in the “DTC Confirmation
Procedure” if the repair is completed.

Before proceeding with disassembly, thoroughly clean the out-
side of the transaxle. It is important to prevent the internal parts
from becoming contaminated by dirt or other foreign matter.

Disassembly should be done in a clean work area.

Use lint-free cloth or towels for wiping parts clean. Common shop rags can leave fibers that could interfere
with the operation of the A/T.

Place disassembled parts in order for easier and proper assembly.

All parts should be carefully cleaned with a general purpose, non-flammable solvent before inspection or
reassembly.
SEF 2 89 H
AAT4 7 0A
MEF040DA

DTC P0705 PARK/NEUTRAL POSITION (PNP) SWITCH
AT-97
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Revision: June 20062007 Versa
DTC P0705 PARK/NEUTRAL POSITION (PNP) SWITCHPFP:32006
DescriptionUCS005NE

The PNP switch assembly includes a transaxle range switch.

The transaxle range switch detects the selector lever position and sends a signal to the TCM.
CONSULT-II Reference ValueUCS005NF
On Board Diagnosis LogicUCS005NG

This is an OBD-II self-diagnostic item.

Diagnostic trouble code “P0705 PNP SW/CIRC” with CONSULT-II is detected when TCM does not
receive the correct voltage signal from the switch based on the gear position.
Possible CauseUCS005N H

Harness or connectors
[The PNP switch circuit is open or shorted.]

PNP switch
DTC Confirmation ProcedureUCS005NI
CAUTION:

Always drive vehicle at a safe speed.

If performing this “DTC Confirmation Procedure” again, always turn ignition switch OFF and wait
at least 10 seconds before continuing.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Touch “START”.
4. Start engine and maintain the following conditions for at least 5
consecutive seconds.
VEHICLE SPEED: 10 km/h (6 MPH) or more
THROTTLE POSI: More than 1.0/8
SLCT LVR POSI: “D” position
5. If the check result is NG, go to AT- 9 9 , "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II”.
Item name Condition Display value
PN POSI SWWhen setting selector lever to “N” or “P” position. ON
When setting selector lever to other positions. OFF
R POSITION SWWhen setting selector lever to “R” position. ON
When setting selector lever to other positions. OFF
D POSITION SWWhen setting selector lever to “D” position. ON
When setting selector lever to other positions. OFF
2 POSITION SWWhen setting selector lever to “2” position. ON
When setting selector lever to other positions. OFF
1 POSITION SWWhen setting selector lever to “1” position. ON
When setting selector lever to other positions. OFF
BCIA0031E

DTC P0720 VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR)
AT-107
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Revision: June 20062007 Versa
DTC P0720 VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR)PFP:32702
DescriptionUCS005N U
The revolution sensor detects the revolution of the idler gear parking pawl lock gear and emits a pulse signal.
The pulse signal is sent to the TCM which converts it into vehicle speed.
CONSULT-II Reference ValueUCS005NV
Remarks: Specification data are reference values.
On Board Diagnosis LogicUCS005NW

This is an OBD-II self-diagnostic item.

Diagnostic trouble code “P0720 VHCL SPEED SEN-AT” with CONSULT-II or 1st judgement flicker without
CONSULT-II is detected when TCM does not receive the proper voltage signal from the sensor.
Possible CauseUCS005NX

Harness or connector
(The sensor circuit is open or shorted.)

Revolution sensor
DTC Confirmation ProcedureUCS005NY
CAUTION:

Always drive vehicle at a safe speed.

Be careful not to rev engine into the red zone on the tachometer.

If performing this “DTC Confirmation Procedure” again, always turn ignition switch OFF and wait
at least 10 seconds before continuing.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch ON and select “DATA MONITOR” mode for
“A/T” with CONSULT-II.
2. Touch “START”.
3. Drive vehicle and check for an increase of “VHCL/S SE-MTR”
value.
If the check result is NG, go to AT- 11 0 , "
Diagnostic Procedure" .
If the check result is OK, go to following step.
4. Select “DATA MONITOR” mode for “A/T” with CONSULT-II.
5. Touch “START”.
6. Start engine and maintain the following conditions for at least 5
consecutive seconds.
VEHICLE SPEED: 30 km/h (19 MPH) or more
THROTTLE POSI: More than 1.0/8
SLCT LVR POSI: “D” position
Driving location: Driving the vehicle uphill (increased engine load) will help maintain the driving
conditions required for this test.
If the check result is NG, go to AT- 11 0 , "
Diagnostic Procedure" .
If the check result is OK, go to following step.
7. Maintain the following conditions for at least 5 consecutive seconds.
ENGINE SPEED: 3,500 rpm or more
THROTTLE POSI: More than 1.0/8
SLCT LVR POSI: “D” position
Driving location: Driving the vehicle uphill (increased engine load) will help maintain the driving
conditions required for this test.
WITH GST
Follow the procedure “WITH CONSULT-II”.
Item name Condition Display value
VHCL/S SE-A/T During driving Approximately matches the speedometer reading.
BCIA0031E

DTC P0725 ENGINE SPEED SIGNAL
AT-113
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Revision: June 20062007 Versa
DTC P0725 ENGINE SPEED SIGNALPFP:24825
DescriptionUCS005O1
The engine speed signal is sent from the ECM to the TCM.
CONSULT-II Reference ValueUCS005O2
Remarks: Specification data are reference values.
On Board Diagnosis LogicUCS005O3

This is an OBD-II self-diagnostic item.

Diagnostic trouble code “P0725 ENGINE SPEED SIG” with CONSULT-II or 9th judgement flicker without
CONSULT-II is detected when TCM does not receive the proper voltage signal from ECM.
Possible CauseUCS005O4
Harness or connector
(Circuit is open or shorted.)
DTC Confirmation ProcedureUCS005O5
CAUTION:

Always drive vehicle at a safe speed.

If performing this “DTC Confirmation Procedure” again, always turn ignition switch OFF and wait
at least 10 seconds before continuing.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch ON and select “DATA MONITOR” mode for
“A/T” with CONSULT-II.
2. Touch “START”.
3. Start engine and maintain the following conditions for at least 10
consecutive seconds.
VEHICLE SPEED: 10 km/h (6 MPH) or more
THROTTLE POSI: More than 1.0/8
SLCT LVR POSI: “D” position
4. If the check result is NG, go to AT- 11 5 , "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II”.
WITHOUT CONSULT-II
1. Start engine.
2. Drive vehicle under the following conditions for more than 10 seconds.
Selector lever position: “D” position
Vehicle speed: Higher than 10 km/h (6 MPH)
Throttle position: Greater than 1.0/8 of the full throttle position
3. Perform self-diagnosis. Refer to AT- 9 0 , "
Diagnostic Procedure Without CONSULT-II" .
4. If the check result is NG, go to AT- 11 5 , "
Diagnostic Procedure" .
Item name Condition Display value
ENGINE SPEED Engine running Approximately matches the tachometer reading.
BCIA0031E

AT-134
DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE
Revision: June 20062007 Versa
DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVEPFP:31940
DescriptionUCS005O T

The torque converter clutch solenoid valve is activated, with the gear in D4 and D3 , by the TCM in
response to signals sent from the vehicle speed sensor and the ECM (throttle opening). Lock-up piston
operation will then be controlled.

Lock-up operation, however, is prohibited when A/T fluid temperature is too low.

When the accelerator pedal is depressed (less than 2/8) on lock-up condition, the engine speed should
not change abruptly. If there is an abrupt change in engine speed, there is no lock-up.
CONSULT-II Reference ValueUCS005OU
Remarks: Specification data are reference values.
On Board Diagnosis LogicUCS005OV

This is an OBD-II self-diagnostic item.

Diagnostic trouble code “P0740 T/C CLUTCH SOL/V” with CONSULT-II or 7th judgement flicker without
CONSULT-II is detected when TCM detects an improper voltage drop while it tries to operate solenoid
valve.
Possible CauseUCS005OW

Torque converter clutch solenoid valve

Harness or connector
(The solenoid circuit is open or shorted.)
DTC Confirmation ProcedureUCS005OX
CAUTION:

Always drive vehicle at a safe speed.

If performing this “DTC Confirmation Procedure” again, always turn ignition switch OFF and wait
at least 10 seconds before continuing.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select “DATA MONITOR” mode for “A/T” with CONSULT-II and
wait at least 1 second.
3. Touch “START”.
4. Start engine and maintain the following conditions for at least 5
consecutive seconds.
VEHICLE SPEED: 80 km/h (50 MPH) or more
THROTTLE POSI: 0.5/8 - 1.0/8
SLCT LVR POSI: “D” position
Driving location: Driving the vehicle uphill (increased
engine load) will help maintain the driving conditions
required for this test.
5. If the check result is NG, go to AT-136, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II”.
WITHOUT CONSULT-II
1. Start engine.
2. Drive vehicle in D
1 → D2 → D3 → D4 → D4 lock-up position.
3. Perform self-diagnosis. Refer to AT-90, "
Diagnostic Procedure Without CONSULT-II" .
4. If the check result is NG, go to AT-136, "
Diagnostic Procedure" .
Item name Condition Display value (Approx)
TCC S/V DUTY Lock-up OFF ⇔ Lock-up ON 4% ⇔ 94%
BCIA0031E

SHIFT CONTROL SYSTEM
AT-233
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Revision: June 20062007 Versa
Selector Lever Knob Removal and InstallationUCS005VJ
REMOVAL
CAUTION:
Make sure that parking brake is applied before removal/installation.
1. Place the selector lever knob (1) in “N” position.
2. Slide knob cover (2) downward.
3. Pull out lock pin (3) from selector lever knob (1).
4. Remove selector lever knob (1) and knob cover (2) as a set from
selector lever.
CAUTION:
Do not push selector button.
INSTALLATION
1. Insert lock pin (1) to selector lever knob (2).
2. Install knob cover (3) to selector lever knob (2).
3. Place the selector lever in “N” position.
4. Install selector lever knob over selector lever until a click is felt.
CAUTION:

Do not tilt selector lever knob when installing. Install it
straight, and do not tap or apply any shock to install it.

Do not push selector button.
Adjustment of A/T PositionUCS005VK
Move selector lever from “P” position to “1” position. You should be able to feel the detents in each position. If
the detents cannot be felt or if the position indicator is improperly aligned, the control cable needs adjustment.
CAUTION:
Make sure that parking brake is applied before adjustment.
1. Remove the air duct assembly. Refer to EM-16, "
AIR CLEANER AND AIR DUCT" .
2. Remove the control cable nut (A) and control cable (1) and
place the manual lever (2) in the "P' position.
3. Place selector lever in “P” position.
4. Hold control cable (1) at the end and pull it with a force of 9.8 N
(approximately 1 kg, 2.2 lb). Release the control cable and tem-
porarily tighten control cable nut (A).
5. Tighten control cable nut (A) to the specified torque.
CAUTION:
Secure manual lever when tightening nut.
6. Move selector lever from “P” to “1” position again. Make sure that selector lever moves smoothly.
7. Check A/T position. Refer to AT-234, "
Checking of A/T Position" .
8. Install air duct assembly. Refer to EM-16, "
AIR CLEANER AND AIR DUCT" .
SCIA6971E
SCIA6972E
Control cable nut : Refer to AT-230, "CONTROL
CABLE COMPONENTS" .
WCIA0635E