ECU NISSAN VERSA 2006 Workshop Service Repair Manual
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Page 1061 of 2896
CVT-164
DTC P1777 STEP MOTOR - CIRCUIT
Revision: June 20062007 Versa
DTC P1777 STEP MOTOR - CIRCUITPFP:31020
DescriptionUCS0063I
The step motor is included in the control valve assembly.
The step motor changes the step with turning 4 coils ON/OFF according to the signal from TCM. As a
result, the flow of line pressure to primary pulley is changed and pulley ratio is controlled
CONSULT-II Reference ValueUCS0063J
Remarks: Specification data are reference values.
On Board Diagnosis LogicUCS0063K
This is an OBD-II self-diagnostic item.
Diagnostic trouble code “P1777 STEP MOTR CIRC” with CONSULT-II is detected under the following
conditions.
–When operating step motor ON and OFF, there is no proper change in the voltage of TCM terminal which
corresponds to it.
Possible CauseUCS0063L
Step motor
Harness or connectors
(Step motor circuit is open or shorted.)
DTC Confirmation ProcedureUCS0063M
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to con-
firm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch ON and select “DATA MONITOR” mode for
“TRANSMISSION” with CONSULT-II.
2. Drive vehicle for at least 5 consecutive seconds.
3. If DTC is detected, go to CVT-166, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II”.
Item name Condition Display value (Approx.)
STM STEP
During driving−20 step - 180 step
SMCOIL A
Changes ON⇔OFF. SMCOIL B
SMCOIL C
SMCOIL D
BCIA0031E
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CVT-168
DTC P1778 STEP MOTOR - FUNCTION
Revision: June 20062007 Versa
DTC P1778 STEP MOTOR - FUNCTIONPFP:31947
DescriptionUCS0063Q
The step motor is included in the control valve assembly.
The step motor's 4 aspects of ON/OFF change according to the signal from TCM. As a result, the flow of
line pressure to primary pulley is changed and pulley ratio is controlled.
This diagnosis item is detected when electrical system is OK, but mechanical system is NG.
This diagnosis item is detected when the state of the changing the speed mechanism in unit does not
operate normally.
CONSULT-II Reference ValueUCS0063R
Remarks: Specification data are reference values.
On Board Diagnosis LogicUCS0063S
This is an OBD-II self-diagnostic item.
Diagnostic trouble code “P1778 STEP MOTR/FNC” with CONSULT-II is detected under the following con-
ditions.
–When not changing the pulley ratio according to the instruction of TCM.
Possible CauseUCS0063T
Step mot or
DTC Confirmation ProcedureUCS0063U
CAUTION:
Always drive vehicle at a safe speed.
Before starting “DTC Confirmation Procedure”, confirm “Hi” or “Mid” or “Low” fixation by “PRI
SPEED” and “VEHICLE SPEED” on “DATA MONITOR MODE”.
If hi-geared fixation occurred, go to CVT-169, "Diagnostic Procedure" .
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to con-
firm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch ON and select “DATA MONITOR” mode for
“TRANSMISSION” with CONSULT-II.
2. Make sure that output voltage of CVT fluid temperature sensor
is within the range below.
ATF TEMP SEN: 1.0 - 2.0 V
If out of range, drive the vehicle to decrease the voltage
(warm up the fluid) or stop engine to increase the voltage
(cool down the fluid)
3. Select “DATA MONITOR” mode for “TRANSMISSION” with
CONSULT-II.
4. Start engine and maintain the following conditions for at least 30
consecutive seconds.
TEST START FROM 0 km/h (0 MPH)
CONSTANT ACCELERATION: Keep 30 sec or more
VEHICLE SPEED: 10 km/h (6 MPH) or more
ACC PEDAL OPEN: More than 1.0/8
RANGE: “D” position
ENG SPEED: 450 rpm or more
5. If DTC is detected, go to CVT-169, "
Diagnostic Procedure" .
Item name Condition Display value (Approx.)
STM STEP
During driving−20 step - 180 step
GEAR RATIO2.56 - 0.43
BCIA0031E
Page 1069 of 2896
CVT-172
OVERDRIVE CONTROL SWITCH
Revision: June 20062007 Versa
TCM terminal data are reference values, measured between each terminal and ground.
Diagnostic ProcedureUCS006KR
1. CHECK CAN COMMUNICATION LINE
Perform the self-diagnosis check. Refer to CVT-60, "
SELF-DIAGNOSTIC RESULT MODE" .
Is any malfunction of the
“U1000 CAN COMM CIRCUIT” indicated in the results?
YES >> Check CAN communication line. Refer to CVT-68, "DTC U1000 CAN COMMUNICATION LINE" .
NO >> GO TO 2.
2. CHECK OVERDRIVE CONTROL SWITCH SIGNAL
With CONSULT-II
1. Turn ignition switch ON.
2. Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for
“TRANSMISSION” with CONSULT-II.
3. Read out ON/OFF switching action of the “SPORT MODE SW”.
OK or NG
OK >>INSPECTION END
NG >> GO TO 3.
3. CHECK OVERDRIVE CONTROL SWITCH
Check overdrive control switch. Refer to CVT-174, "
Component Inspection"
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4. CHECK SELF-DIAGNOSTIC RESULTS (COMBINATION METER)
Perform self-diagnosis check. Refer to DI-13, "
Self-Diagnosis Mode of Combination Meter" .
Is any malfunction detected by self-diagnostic?
YES >> Check the malfunctioning system.
NO - 1 >> With intelligent key: GO TO 5.
NO - 2 >> Without intelligent key: GO TO 6.
TerminalWire
colorItem Condition Data (Approx.)
5 L CAN-H — —
6 P CAN-L — —
Item name Condition Display value
SPORT MODE SWWhile pushing overdrive
cancel switchON
Other conditions OFF
SCIA4517E
Page 1092 of 2896
SHIFT CONTROL SYSTEM
CVT-195
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CVT
Revision: June 20062007 Versa
Selector Lever Knob Removal and InstallationUCS006XQ
REMOVAL
CAUTION:
Make sure that parking brake is applied before removal/installation.
1. Set 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. Set 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 CVT PositionUCS0064J
CAUTION:
Make sure that parking brake is applied before adjustment.
1. Loosen the control cable nut (A) and place the manual lever (1)
in “P” position.
2. Place selector lever in “P” position.
3. Push the control cable (2) in with a load of 9.8 N (approximately
1 kg, 2.2 lb). Release the control cable and temporarily tighten
the control cable nut.
NOTE:
Do not move the manual lever. Make sure the manual lever
stays in the “P” position.
4. Tighten the control cable nut.
CAUTION:
Secure the manual lever when tightening nut.
5. Check the operation of the CVT. Refer to CVT-196, "
Checking of CVT Position" .
SCIA6971E
SCIA6972E
Control cable nut: Refer to CVT-192, "CON-
TROL CABLE COMPO-
NENTS" .
WCIA0608E
Page 1100 of 2896
KEY INTERLOCK CABLE
CVT-203
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CVT
Revision: June 20062007 Versa
4. Slide the slider (A) toward the casing cap (B) while pressing tabs
(C) on the slider to separate the slider (A) from the adjust holder
(D).
5. Remove the casing cap (B) from the cable bracket on the control
device assembly.
6. Remove the key interlock cable from the key interlock rod (E).
7. Remove steering column cover (upper and lower) and instru-
ment lower finisher. Refer to IP-10, "
INSTRUMENT PANEL
ASSEMBLY" .
8. Pull out the lock plate (A) from the holder (B).
9. Remove the key interlock cable (1) from the key cylinder (2).
10. Remove the clip (A), and then remove the key interlock cable
(1).
INSTALLATION
CAUTION:
Install key interlock cable in such a way that it will not be damaged by sharp bends, twists or inter-
ference with adjacent parts.
After installing key interlock cable to control device assembly, make sure that casing cap and
bracket are firmly secured in their positions.
1. Place the selector lever in the “P” position.
2. Turn ignition switch to “ACC” or “ON” position.
3. Set the key interlock cable (1) to the key cylinder (2).
4. Install the lock plate (A) to the holder (B).
5. Turn ignition switch to “LOCK” position.
SCIA6975E
SCIA6976E
SCIA6973E
SCIA6976E
Page 1101 of 2896
CVT-204
KEY INTERLOCK CABLE
Revision: June 20062007 Versa
6. Temporarily install the adjust holder (A) to the key interlock rod
(B).
7. Install the casing cap (C) to the cable bracket (D) on the control
device assembly.
CAUTION:
Do not bend or twist key interlock cable excessively
when installing.
After installing key interlock cable to cable bracket (D) on
control device assembly, make sure casing caps (C) is
firmly secured in cable bracket (D) on control device
assembly.
If casing cap (C) is loose [less than 39.2 N (4.0 kg, 8.8 lb) removing force], replace key interlock
cable.
8. Slide the slider (A) toward the key interlock rod (D) while press-
ing the pull lock (B) down to securely connect the adjust holder
(C) with the key interlock rod (D).
CAUTION:
Do not press tabs when holding slider (A).
Do not apply any side to side force to key interlock rod
(D) when sliding slider (A).
9. Secure the key interlock cable (1) with the clip (A).
10. Install steering column cover (upper and lower) and instrument
lower finisher. Refer to IP-10, "
INSTRUMENT PANEL ASSEM-
BLY" .
11. Install the center console assembly. Refer to IP-10, "
INSTRU-
MENT PANEL ASSEMBLY" .
12. Install the selector lever knob. Refer to CVT-195, "
Selector
Lever Knob Removal and Installation" .
13. Check shift lock system. Refer to CVT-197, "
Description" .
SCIA6188E
SCIA6978E
SCIA6973E
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CVT-208
TRANSAXLE ASSEMBLY
Revision: June 20062007 Versa
4. Remove the four drive plate to torque converter nuts.
NOTE:
Rotate the crankshaft clockwise as viewed from front of engine
for access to drive plate to torque converter nuts.
5. Put matching marks on the drive plate and torque converter alignment stud.
CAUTION:
For matching marks, use paint. Never damage the drive plate or torque converter.
6. Remove the transaxle to engine and engine to transaxle bolts.
7. Separate the transaxle from the engine.
8. If necessary, remove the following from the transaxle:
CVT fluid charging pipe
Engine mounting bracket (LH)
Fluid cooler tubes
Air breather hose
Any necessary brackets
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
When replacing an engine or transmission you must make sure any dowels are installed correctly
during re-assembly.
Improper alignment caused by missing dowels may cause vibration, oil leaks or breakage of drive
train components.
Do not reuse O-rings and copper washers.
When turning crankshaft, turn it clockwise as viewed from the front of the engine.
When tightening the nuts for the torque converter while securing the crankshaft pulley bolt, be
sure to confirm the tightening torque of the crankshaft pulley bolt. Refer to EM-37, "
TIMING
CHAIN" .
After converter is installed to drive plate, rotate crankshaft several turns to check that transaxle
rotates freely without binding.
When installing the torque converter to the transaxle measure
distance A.
WCIA0616E
Distance A: 14.4 mm (0.57 in) or more
WCIA0617E
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TRANSAXLE ASSEMBLY
CVT-209
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CVT
Revision: June 20062007 Versa
When installing the cooler outlet tube (1) to the transaxle assem-
bly (2), align the cooler tube bracket (A) against the transaxle as
shown.
When installing the transaxle to the engine, align the matching mark on the drive plate with the matching
mark on the torque converter alignment stud.
When securing the transaxle to the engine, attach the bolts in
accordance with the following standard.
When installing the drive plate to torque converter nuts, tighten
them temporarily. Then tighten the nuts to the specified torque.
After completing installation check for fluid level, fluid leakage, and the positions of CVT. Refer to CVT-16,
"Checking CVT Fluid" , CVT-195, "Adjustment of CVT Position" and CVT-196, "Checking of CVT Posi-
tion" .
When replacing the CVT assembly, erase EEP ROM in TCM. Refer to CVT-9, "Service After Replacing
TCM and Transaxle Assembly" .
WCIA0618E
Bolt No. 1 (Transaxle to engine) 2 (Engine to transaxle)
Number of bolts 2 7
Bolt length
“A” mm (in)55 (2.17) 50 (1.97)
Tightening torque
N·m (kg-m, ft-lb)62 (6.3, 46)
WCIA0619E
Converter nuts: : 51 N·m (5.2 kg-m, 38 ft-lb)
WCIA0616E
Page 1161 of 2896
DI-52
WARNING CHIME
Revision: June 20062007 Versa
Terminals and Reference Values for BCMEKS00I12
Refer to BCS-12, "Terminals and Reference Values for BCM" .
CONSULT-II Function (BCM)EKS00I13
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II START PROCEDURE
Refer to GI-38, "CONSULT-II Start Procedure" .
DATA MONITOR
Display Item List
ACTIVE TEST
Display Item List
SELF-DIAG RESULTS
Display Item List
NOTE:
If “CAN communication [U1000]” is indicated, after printing the monitor item, go to “LAN system”. Refer to
LAN-44, "
TROUBLE DIAGNOSIS" .
BCM diagnostic
test itemDiagnostic mode Description
Inspection by partWORK SUPPORTSupports inspections and adjustments. Commands are transmitted to the BCM
for setting the status suitable for required operation, input/output signals are
received from the BCM and received data is displayed.
DATA MONITOR Displays BCM input/output data in real time.
ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
SELF-DIAG RESULTS Displays BCM self-diagnosis results.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
ECU PART NUMBER BCM part number can be read.
CONFIGURATION Performs BCM configuration read/write functions.
Monitored item ALL SIGNALSSELECTION
FROM MENUContents
IGN ON SW X X Indicates [ON/OFF] condition of ignition switch.
KEY ON SW X X Indicates [ON/OFF] condition of key switch.
DOOR SW-DR X X Indicates [ON/OFF] condition of front door switch LH.
LIGHT SW 1ST X X Indicates [ON/OFF] condition of lighting switch.
BUCKLE SW X X Indicates [ON/OFF] condition of seat belt buckle switch LH.
Test item Malfunction is detected when···
IGN KEY WARN ALM This test is able to check key warning chime operation.
LIGHT WARN ALM This test is able to check light warning chime operation.
SEAT BELT WARN TEST This test is able to check seat belt warning chime operation.
Display item [Code] Malfunction is detected when...
CAN communication [U1000] Malfunction is detected in CAN communication.
Page 1185 of 2896
EC-16Revision: June 2006
PRECAUTIONS
2007 Versa
PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
UBS00QB3
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.
WAR NIN G:
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 for Procedures without Cowl Top CoverUBS00RCH
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.
On Board Diagnostic (OBD) System of Engine and A/T, CVTUBS00QB4
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 the battery ground cable before any repair
or inspection work. The open/short circuit of related switches, sensors, 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 the open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)
Certain systems and components, especially those related to OBD, may use a new style slide-
locking type harness connector. For description and how to disconnect, refer to PG-68, "
HAR-
NESS CONNECTOR" .
Be sure to route and secure the harnesses properly after work. The interference of the harness
with a bracket, etc. may cause the MIL to light up due to the short circuit.
Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MIL to light up due to the malfunction of the fuel injection system, etc.
Be sure to erase the unnecessary malfunction information (repairs completed) from the ECM and
TCM (Transmission control module) before returning the vehicle to the customer.
PIIB3706J