CVT-62
TROUBLE DIAGNOSIS
Revision: June 20062007 Versa
L/PRESS SOL/
CIRC
Normal voltage not applied to solenoid due to open or
short circuit
TCM detects as irregular by comparing target value with
monitor valueP0745 P0745CVT-113
PRS CNT SOL/A
FCTNUnexpected gear ratio was detected in the LOW side due to
excessively low line pressureP0746 P0746CVT-118
PRS CNT SOL/B
FCTNSecondary pressure is too high or too low compared with the
commanded value while drivingP0776 P0776CVT-121
PRS CNT SOL/B
CIRC
Normal voltage not applied to solenoid due to cut line,
short, or the like
TCM detects as irregular by comparing target value with
monitor valueP0778 P0778CVT-124
TR PRS SENS/A
CIRCSignal voltage of the transmission fluid pressure sensor A
(secondary pressure sensor) is too high or too low while driv-
ingP0840 P0840CVT-129
PRESS SEN/
FNCTNCorrelation between the values of the transmission fluid
pressure sensor A (secondary pressure sensor) and the
transmission fluid pressure sensor B (primary pressure sen-
sor) is out of specificationP0841 —CVT-134
TR PRS SENS/B
CIRCSignal voltage of the transmission fluid pressure sensor B
(primary pressure sensor) is too high or too low while drivingP0845 P0845CVT-137
SEC/PRESS
DOWNSecondary fluid pressure is too low compared with the com-
manded value while drivingP0868 —CVT-142
TCM-POWER
SUPPLY
When the power supply to the TCM is cut OFF, for exam-
ple because the battery is removed, and the self-diagnosis
memory function stops
This is not a malfunction message (Whenever shutting
OFF a power supply to the TCM, this message appears on
the screen)P1701 —CVT-145
TP SEN/CIRC A/TTCM does not receive the proper accelerator pedal position
signals (input by CAN communication) from ECMP1705 —CVT-150
ESTM VEH SPD
SIG*2
CAN communication with the ABS actuator and the elec-
tric unit (control unit) is malfunctioning
There is a great difference between the vehicle speed sig-
nal from the ABS actuator and the electric unit (control
unit), and the vehicle speed sensor signalP1722 —CVT-152
CVT SPD SEN/
FNCTNA rotation sensor error is detected because the gear does
not change in accordance with the position of the stepping
motor
CAUTION:
One of the “P0720 VEH SPD SEN/CIR AT”, the “P0715
INPUT SPD SEN/CIRC” or the “P0725 ENGINE SPEED
SIG“ is displayed with the DTC at the same timeP1723 —CVT-154
ELEC TH CON-
TROLThe electronically controlled throttle for ECM is malfunction-
ingP1726 —CVT-156
LU-SLCT SOL/
CIRC
Normal voltage not applied to solenoid due to cut line,
short, or the like
TCM detects as irregular by comparing target value with
monitor valueP1740 P1740CVT-158
Items (CONSULT-
II screen terms)Malfunction is detected when...TCM self-
diagnosisOBD-II (DTC)
Reference
page “TRANS-
MISSION”
with CON-
SULT-IIMIL indicator
lamp*1,
“ENGINE” with
CONSULT-II or
GST
TROUBLE DIAGNOSIS
CVT-63
D
E
F
G
H
I
J
K
L
MA
B
CVT
Revision: June 20062007 Versa
*1: Refer to CVT-33, "Malfunction Indicator Lamp (MIL)" .
*2: Models without ABS does not indicate.
How to Erase Self-diagnostic Results
1. Touch “SELF-DIAG RESULTS” on “SELECT DIAG MODE”.
2. Touch “ERASE”. (The self-diagnostic results will be erased.)
L/PRESS CON-
TROLTCM detects the unexpected line pressure P1745 —CVT-163
STEP MOTR
CIRCEach coil of the step motor is not energized properly due to
an open or a shortP1777 P1777CVT-164
STEP MOTR/FNCThere is a great difference between the number of steps for
the stepping motor and for the actual gear ratioP1778 P1778CVT-168
NO DTC IS
DETECTED: FUR-
THER TESTING
MAY BE
REQUIREDNo NG item has been detected X X — Items (CONSULT-
II screen terms)Malfunction is detected when...TCM self-
diagnosisOBD-II (DTC)
Reference
page “TRANS-
MISSION”
with CON-
SULT-IIMIL indicator
lamp*1,
“ENGINE” with
CONSULT-II or
GST
BCIA0031E
SCIA4614E
CVT-64
TROUBLE DIAGNOSIS
Revision: June 20062007 Versa
DATA MONITOR MODE
Operation Procedure
1. Touch “DATA MONITOR” on “SELECT DIAG MODE”.
NOTE:
When malfunction is detected, CONSULT-II performs
“REAL-TIME DIAGNOSIS”. Also, any malfunction detected
while in this mode will be displayed at real time.
Display Items List
X: Standard, —: Not applicable, : Option
BCIA0031E
Monitored item (Unit)Monitor item selection
Remarks ECU
INPUT
SIGNALSMAIN SIG-
NALSSELEC-
TION
FROM
MENU
VSP SENSOR (km/h) X — Output speed sensor (secondary speed sensor).
ESTM VSP SIG (km/h) X — Models without ABS does not indicate.
PRI SPEED SEN (rpm) X —
ENG SPEED SIG (rpm) X —
SEC HYDR SEN (V) X —
PRI HYDR SEN (V) X —
ATF TEMP SEN (V) X — CVT fluid temperature sensor
VIGN SEN (V) X —
VEHICLE SPEED (km/h) — X Vehicle speed recognized by the TCM.
PRI SPEED (rpm) — X Primary pulley speed.
SEC SPEED (rpm) — — Secondary pulley speed.
ENG SPEED (rpm) — X
SLIP REV (rpm) — XDifference between engine speed and primary
pulley speed
GEAR RATIO — X
G SPEED (G) — —
ACC PEDAL OPEN (0.0/8) X XDegree of opening for accelerator recognized by
the TCM
For fail-safe operation, the specific value used
for control is displayed.
TRQ RTO — —
SEC PRESS (MPa) — X
PRI PRESS (MPa) — X
ATF TEMP — X
DSR REV (rpm) — —
DGEAR RATIO — —
CVT-66
TROUBLE DIAGNOSIS
Revision: June 20062007 Versa
CAN DIAGNOSTIC SUPPORT MONITOR MODE
Operation Procedure
1. Touch “CAN DAIG SUPPORT MNTR” on “SELECT DIAG
MODE” screen. Refer to LAN-44, "
CAN Diagnostic Support
Monitor" .
CVT LAMP (ON/OFF) — —
SPORT MODE IND (ON/OFF) — —
MMODE IND (ON/OFF) — — Not mounted but displayed.
SMCOIL D (ON/OFF) — — Step motor coil “D” energizing status
SMCOIL C (ON/OFF) — — Step motor coil “C” energizing status
SMCOIL B (ON/OFF) — — Step motor coil “B” energizing status
SMCOIL A (ON/OFF) — — Step motor coil “A” energizing status
LUSEL SOL OUT (ON/OFF) — —
REV LAMP (ON/OFF) — X
STRTR RLY OUT (ON/OFF) — — Starter relay
LUSEL SOL MON (ON/OFF) — —
STRTR RLY MON (ON/OFF) — — Starter relay
VDC ON (ON/OFF) X —
Not mounted but displayed.
TCS ON (ON/OFF) X —
ABS ON (ON/OFF) X —
ACC ON (ON/OFF) X — Not mounted but displayed.
RANGE — XIndicates position is recognized by TCM. Indi-
cates a specific value required for control when
fail-safe function is activated.
M GEAR POS — X
Voltage (V) — —Displays the value measured by the voltage
probe.
Frequency (Hz) — —
The value measured by the pulse probe is dis-
played. DUTY-HI (high) (%) — —
DUTY-LOW (low) (%) — —
PLS WIDTH-HI (ms) — —
PLS WIDTH-LOW (ms) — —Monitored item (Unit)Monitor item selection
Remarks ECU
INPUT
SIGNALSMAIN SIG-
NALSSELEC-
TION
FROM
MENU
BCIA0031E
CVT-152
DTC P1722 ESTM VEHICLE SPEED SIGNAL
Revision: June 20062007 Versa
DTC P1722 ESTM VEHICLE SPEED SIGNALPFP:47660
DescriptionUCS0062P
The vehicle speed signal is transmitted from ABS actuator and electric unit (control unit) to TCM by CAN com-
munication line.
CONSULT-II Reference ValueUCS0062Q
Remarks: Specification data are reference values.
On Board Diagnosis LogicUCS0062R
This is not an OBD-II self-diagnostic item.
Diagnostic trouble code “P1722 ESTM VEH SPD SIG” with CONSULT-II is detected when TCM does not
receive the proper vehicle speed signal (input by CAN communication) from ABS actuator and electric
unit (control unit).
Possible CauseUCS0062S
Harness or connectors
(Sensor circuit is open or shorted.)
ABS actuator and electric unit (control unit)
DTC Confirmation ProcedureUCS0062T
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. (Do not start engine.)
2. Select “DATA MONITOR” mode for “TRANSMISSION” with
CONSULT-II.
3. Start engine and maintain the following conditions for at least 5
consecutive seconds.
ACC PEDAL OPEN: 1.0/8 or less
VEHICLE SPEED SE: 30 km/h (17 MPH) or more
4. If DTC is detected, go to CVT-153, "
Diagnostic Procedure" .
Item name Condition Display value
ESTM VSP SIG
During driving Approximately matches the speedometer reading.
VEHICLE SPEED
BCIA0031E
DTC P1722 ESTM VEHICLE SPEED SIGNAL
CVT-153
D
E
F
G
H
I
J
K
L
MA
B
CVT
Revision: June 20062007 Versa
Diagnostic ProcedureUCS0062U
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?
YES >> Check CAN communication line. Refer to CVT-68, "DTC U1000 CAN COMMUNICATION LINE" .
NO >> GO TO 2.
2. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
Perform ABS actuator and electric unit (control unit) self-diagnosis check. Refer to BRC-20, "
SELF-DIAGNO-
SIS" .
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3. CHECK INPUT SIGNALS
With CONSULT-II
1. Start engine.
2. Select “SELECTION FROM MENU” in “DATA MONITOR” mode
for “TRANSMISSION” with CONSULT-II.
3. Drive vehicle and read out the value of “VEHICLE SPEED” and
“ESTM VSP SIG”.
4. Check if there is a great difference between the two values.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4. CHECK TCM
Check TCM input/output signals. Refer to CVT-54, "
TCM Input/Output Signal Reference Values" .
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
5. CHECK DTC
Perform CVT-152, "
DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.
Item name Condition Display value
ESTM VSP SIG
During drivingApproximately matches
the speedometer reading.
VEHICLE SPEED
SCIA4510E
SHIFT CONTROL SYSTEM
CVT-193
D
E
F
G
H
I
J
K
L
MA
B
CVT
Revision: June 20062007 Versa
7. Remove the plate (1) from the control device assembly.
: Vehicle front
8. Remove the lock plate (1) from the control cable (2).
: Vehicle front
9. Remove the control cable (2) from the control device assembly.
10. Insert flat-bladed screwdrivers at points (A) and (B) as shown,
and press both tabs (E) and (F) at the front (C) and rear (D)
slightly toward the center of the control device assembly to
remove the control device assembly from the underside of the
vehicle.
: Vehicle front
SCIA6967E
SCIA6968E
SCIA6970E
CVT-194
SHIFT CONTROL SYSTEM
Revision: June 20062007 Versa
INSTALLATION
Installation is in the reverse order of removal.
When installing the control cable (1) to the control device
assembly (2), make sure that the control cable (1) is fully
pressed in with the ribbed surface (A) facing downward from the
vehicle.
: Vehicle front
After installation is completed, adjust and check the CVT posi-
tion. Refer to CVT-195, "
Adjustment of CVT Position" and CVT-
196, "Checking of CVT Position" .
Control Device Disassembly and AssemblyUCS006XP
DISASSEMBLY
NOTE:
Refer to CVT-191, "
CONTROL DEVICE COMPONENTS" to disassemble.
1. Remove selector lever knob from control device assembly. Refer to CVT-195, "
Selector Lever Knob
Removal and Installation" .
2. Remove position lamp from position indicator plate (1).
3. Insert a flat-bladed screwdriver to (A) (at 4 locations) as shown,
and bend each hook slightly to raise position indicator plate (1)
and remove from control device assembly (2).
4. Remove bracket from control device assembly (2).
5. Remove CVT device harness connector from control device
assembly (2).
6. Release tabs (A) on shift lock solenoid and park position switch
assembly from hooks (B) on control device assembly to shift
lock solenoid and park position switch assembly.
ASSEMBLY
Assembly is in the reverse order of disassembly.
SCIA6253E
SCIA6969E
SCIA6977E