2006 NISSAN VERSA turn signal

DTC P1745 LINE PRESSURE CONTROL
CVT-163
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Revision: June 20062007 Versa
DTC P1745 LINE PRESSURE CONTROLPFP:31036
DescriptionUCS0063D
The pressure control solenoid valve A (line pressure solenoid valve) regulates the oil pump discharge pres-
sure to suit the driving condition in response to a signal sent from the TCM.
On Board Diagnosis LogicUCS0063E

This is not an OBD-II self-diagnostic item.

Diagnostic trouble code “P1745 L/PRESS CONTROL” with CONSULT-II is detected when TCM detects
the unexpected line pressure.
Possible CauseUCS0063F
TCM
DTC Confirmation ProcedureUCS0063G
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. If DTC is detected, go to CVT-163, "
Diagnostic Procedure" .
Diagnostic ProcedureUCS0063H
1. CHECK DTC
1. Turn ignition switch ON. (Do not start engine.)
2. Select “SELF-DIAG RESULTS” mode for “TRANSMISSION” with CONSULT-II.
3. Erase self-diagnostic results. Refer to CVT-63, "
How to Erase Self-diagnostic Results" .
4. Turn ignition switch OFF, and wait for 10 seconds or more.
5. Start engine.
6. Confirm self-diagnostic results again. Refer to CVT-60, "
SELF-DIAGNOSTIC RESULT MODE" .
Is the
“P1745 L/PRESS CONTROL” displayed?
YES >> Replace TCM. Refer to CVT-9, "Service After Replacing TCM and Transaxle Assembly" .
NO >>INSPECTION END
BCIA0031E

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

CVT-166
DTC P1777 STEP MOTOR - CIRCUIT
Revision: June 20062007 Versa
TCM terminals data are reference values, measured between each terminal and ground.
Diagnostic ProcedureUCS0063O
1. CHECK INPUT SIGNALS
With CONSULT-II
1. Start engine.
2. Select “SELECTION FROM MENU” in “DATA MONITOR” mode
for “TRANSMISSION” with CONSULT-II.
3. Start vehicle and read out the value of “STM STEP”, “SMCOIL
A”, “SMCOIL B”, “SMCOIL C”, and “SMCOIL D”.
OK or NG
OK >> GO TO 4.
NG >> GO TO 2.
2. CHECK HARNESS BETWEEN TCM AND STEP MOTOR
1. Turn ignition switch OFF.
2. Disconnect CVT unit connector and TCM connector.
3. Check continuity between TCM connector terminals and CVT
unit harness connector terminals.
4. If OK, check harness for short to ground and short to power.
5. If OK, check continuity between body ground and CVT assembly.
6. Reinstall any part removed.
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
Terminal Wire color Item Condition Data (Approx.)
11 L Step motor A Within 2 seconds after ignition switch ON, the time measure-
ment by using the pulse width measurement function (Hi level)
of CONSULT-II.*1
CAUTION:
Connect the diagnosis data link cable to the vehicle diag-
nosis connector.
*1: A circuit tester cannot be used to test this item.30.0 msec
12 Y Step motor B10.0 msec
20 W Step motor C30.0 msec
21 P Step motor D10.0 msec
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
SCIA4516E
Item Connector Terminal Continuity
TCM E31 11
Ye s
CVT unit harness connector F46 6
TCM E31 12
Ye s
CVT unit harness connector F46 7
TCM E31 20
Ye s
CVT unit harness connector F46 8
TCM E31 21
Ye s
CVT unit harness connector F46 9
SCIA4695E

DTC P1777 STEP MOTOR - CIRCUIT
CVT-167
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Revision: June 20062007 Versa
3. CHECK STEP MOTOR
Check step motor. Refer to CVT-167, "
Component Inspection" .
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4. CHECK DTC
Perform CVT-164, "
DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 5.
5. CHECK TCM
1. Check TCM input/output signals. Refer to CVT-54, "
TCM Input/Output Signal Reference Values" .
2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK >>INSPECTION END
NG >> Repair or replace damaged parts.
Component InspectionUCS0063P
STEP MOTOR
1. Turn ignition switch OFF.
2. Disconnect CVT unit harness connector.
3. Check resistance between CVT unit harness connector termi-
nals and ground.
4. If NG, replace the transaxle assembly. Refer to CVT-207, "
Removal and Installation" .
Name Connector TerminalResistance
(Approx.)
Step motor F466 - 7
30 Ω
8 - 9
6 - Ground
15 Ω 7 - Ground
8 - Ground
9 - Ground
SCIA4696E

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

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

DI-1
DRIVER INFORMATION SYSTEM
K ELECTRICAL
CONTENTS
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SECTION DI
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Revision: June 20062007 Versa PRECAUTION ............................................................ 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
PREPARATION ........................................................... 4
Commercial Service Tool ......................................... 4
COMBINATION METERS ........................................... 5
Component Parts and Harness Connector Location ..... 5
System Description .................................................. 5
UNIFIED METER CONTROL UNIT ...................... 5
POWER SUPPLY AND GROUND CIRCUIT ........ 5
SPEEDOMETER ................................................... 6
TACHOMETER ..................................................... 6
FUEL GAUGE ....................................................... 6
ODO/TRIP METER ............................................... 6
CAN COMMUNICATION SYSTEM DESCRIP-
TION ...................................................................... 6
Arrangement of Combination Meter ......................... 7
Internal Circuit .......................................................... 8
Wiring Diagram — METER — .................................. 9
Combination Meter Harness Connector Terminal
Layout .....................................................................11
Terminals and Reference Value for Combination
Meter .......................................................................11
Self-Diagnosis Mode of Combination Meter ........... 13
SELF-DIAGNOSIS MODE FUNCTION ............... 13
OPERATION PROCEDURE ............................... 13
CONSULT-II Function (METER) ............................. 14
CONSULT-II START PROCEDURE .................... 14
SELF-DIAGNOSTIC RESULTS .......................... 14
DATA MONITOR ................................................. 15
Trouble Diagnosis .................................................. 17
HOW TO PERFORM TROUBLE DIAGNOSIS ... 17
PRELIMINARY CHECK ...................................... 17
Symptom Chart ...................................................... 17
Power Supply and Ground Circuit Inspection ........ 17
Vehicle Speed Signal Inspection ............................ 18
WITH ABS ........................................................... 18
WITHOUT ABS OR CVT ..................................... 19
WITH CVT, WITHOUT ABS ................................ 19Engine Speed Signal Inspection ............................. 20
Fuel Level Sensor Signal Inspection ...................... 20
Fuel Gauge Fluctuates, Indicates Wrong Value, or
Varies ...................................................................... 22
Fuel Gauge Does Not Move to Full position ........... 22
DTC [U1000] CAN Communication Circuit ............. 22
Electrical Components Inspection .......................... 23
FUEL LEVEL SENSOR UNIT CHECK ................ 23
Removal and Installation ........................................ 23
COMBINATION METER ...................................... 23
WARNING LAMPS .................................................... 24
Schematic ............................................................... 24
Wiring Diagram — WARN — .................................. 25
Oil Pressure Warning Lamp Stays Off (Ignition
Switch ON) ............................................................. 34
Oil Pressure Warning Lamp Does Not Turn Off (Oil
Pressure Is Normal) ................................................ 35
Component Inspection ............................................ 36
OIL PRESSURE SWITCH ................................... 36
A/T INDICATOR ........................................................ 37
System Description ................................................. 37
Wiring Diagram — AT/IND — ................................. 38
A/T Indicator Does Not Illuminate ........................... 40
CVT INDICATOR ....................................................... 42
System Description ................................................. 42
Wiring Diagram — CVTIND — ............................... 43
CVT Indicator Does Not Illuminate ......................... 45
WARNING CHIME ..................................................... 47
Component Parts and Harness Connector Location ... 47
System Description ................................................. 47
POWER SUPPLY AND GROUND CIRCUIT ....... 47
IGNITION KEY WARNING CHIME (WITHOUT
INTELLIGENT KEY) ............................................ 48
IGNITION KEY WARNING CHIME (WITH INTEL-
LIGENT KEY) ...................................................... 48
LIGHT WARNING CHIME ................................... 48
Wiring Diagram — CHIME — ................................. 50
Terminals and Reference Values for BCM .............. 52
CONSULT-II Function (BCM) ................................. 52
CONSULT-II START PROCEDURE .................... 52

DI-14
COMBINATION METERS
Revision: June 20062007 Versa
7. Each meter activates while pressing odo/trip meter switch. (At this time, the low-fuel warning lamp turns
off, low water temperature indicator lamp and high water temperature warning lamp turn on.)
NOTE:
If any of the meter and gages are not activated, replace combination meter. Refer to IP-19, "
COMBINA-
TION METER" .
CONSULT-II Function (METER)EKS00I0C
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" .
SELF-DIAGNOSTIC RESULTS
Display Item List
NOTE:
“TIME” indicates the following.

0: Indicates that a malfunction is detected at present.

1-63: Indicates that a malfunction was dectected in the past. (Displays number of ignition switch OFF →
ON cycles after malfunction is detected. Self-diagnostic result is erased when “63” is exceded.)
WKIA5452E
METER diagnosis mode Description
SELF-DIAG RESULTS Displays combination meter self-diagnosis results.
DATA MONITOR Displays combination meter input/output data in real time.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
CONSULT-II display Malfunction Reference page
CAN COMM CIRC [U1000]Malfunction is detected in CAN communication lines.
CAUTION:
Even when there is no malfunction on CAN communication system, mal-
function may be misinterpreted when battery has low voltage (when
maintaining 7 - 8 V for about 2 seconds) or 10A fuse [No. 14, located in
the fuse block (J/B)] is removed.DI-22
VEHICLE SPEED CIRC [B2205]Malfunction is detected when an erroneous speed signal is input.
CAUTION:
Even when there is no malfunction on speed signal system, malfunctions
may be misinterpreted when battery has low voltage (when maintaining 7
- 8 V for about 2 seconds).DI-18