transaxle NISSAN TIIDA 2007 Service User Guide

AT-30
A/T CONTROL SYSTEM
Revision: June 20062007 Versa
TCM FunctionUCS005MC
The function of the TCM is to:

Receive input signals sent from various switches and sensors.

Determine required line pressure, shifting point, lock-up operation, and engine brake operation.

Send required output signals to the respective solenoids.
CONTROL SYSTEM OUTLINE
The automatic transaxle senses vehicle operating conditions through various sensors or signals. It always
controls the optimum shift position and reduces shifting and lock-up shocks.
CONTROL SYSTEM DIAGRAM
SWITCHES & SENSORS


TCM


ACTUATORS
PNP switch
Accelerator pedal position signal
Closed throttle position signal
Wide open throttle position signal
Engine speed signal
A/T fluid temperature sensor
Revolution sensor
Turbine revolution sensor (Power
train revolution sensor)
Vehicle speed sensor
Overdrive control switch signal
Stop lamp switch signalShift control
Line pressure control
Lock-up control
Overrun clutch control
Fail-safe control
Self-diagnosis
CONSULT-II communication line
controlShift solenoid valve A
Shift solenoid valve B
Overrun clutch solenoid valve
Torque converter clutch solenoid
valve
Line pressure solenoid valve
OD OFF indicator lamp
SCIA7 112 E

AT-32
A/T CONTROL SYSTEM
Revision: June 20062007 Versa
Line Pressure ControlUCS005M F

TCM has various line pressure control characteristics to match the driving conditions.

An ON-OFF duty signal is sent to the line pressure solenoid valve based on TCM characteristics.

Hydraulic pressure on the clutch and brake is electronically controlled through the line pressure solenoid
valve to accommodate engine torque. This results in smooth shift operation.
NORMAL CONTROL
The characteristic of the line pressure to the throttle opening is set
for suitable clutch operation.
BACK-UP CONTROL (ENGINE BRAKE)
If the selector lever is shifted to “2” position while driving in D4 or D3,
great driving force is applied to the clutch inside the transaxle. Clutch
operating pressure (line pressure) must be increased to deal with
this driving force.
DURING SHIFT CHANGE
The line pressure is temporarily reduced corresponding to a change
in engine torque when shifting gears (that is, when the shift solenoid
valve is switched for clutch operation) to reduce shifting shock.
SAT0 0 3J
SAT0 0 4J
SCIA4828E

AT-74
TROUBLE DIAGNOSIS
Revision: June 20062007 Versa
Slips/Will Not EngageRaces extremely fast
or slips in changing
from D
3 to D2 when
depressing accelera-
tor pedal. ON vehicle1. A/T fluid levelAT- 1 6
2. Accelerator pedal position sensor EC-532
3. Line pressure testAT- 5 6
4. Line pressure solenoid valveAT- 1 4 5
5. Shift solenoid valve BAT- 1 5 6
6. Control valve assemblyAT- 2 4 2
OFF vehicle7. Brake bandAT- 3 4 38. High clutchAT- 3 1 4
Races extremely fast
or slips in changing
from D
4 or D3 to D 1
when depressing
accelerator pedal.ON vehicle1. A/T fluid levelAT- 1 6
2. Accelerator pedal position sensorEC-532
3. Line pressure testAT- 5 6
4. Line pressure solenoid valveAT- 1 4 5
5. Shift solenoid valve AAT- 1 5 1
6. Shift solenoid valve BAT- 1 5 6
7. Control valve assemblyAT- 2 4 2
OFF vehicle8. Forward clutchAT- 3 2 09. Forward one-way clutchAT- 3 3 2
10. Low one-way clutchAT- 2 6 8
Vehicle will not run in
any position.ON vehicle1. A/T fluid levelAT- 1 6
2. Control cable adjustmentAT- 2 3 3
3. Line pressure testAT- 5 6
4. Line pressure solenoid valveAT- 1 4 5
OFF vehicle5. Oil pumpAT- 2 8 9
6. High clutchAT- 3 1 4
7. Brake bandAT- 3 4 3
8. Low & reverse brakeAT- 3 2 7
9. Torque converterAT- 2 6 8
10. Parking componentsAT- 2 5 7
OthersEngine cannot be
started in “P” and “N”
positions.
AT- 2 0 0
ON vehicle1. Ignition switch and starterPG-4
, SC-10
2. Control cable adjustmentAT- 2 3 3
3. PNP switch adjustmentAT- 2 4 7
Engine starts in posi-
tions other than “P”
and “N”.ON vehicle1. Control cable adjustmentAT- 2 3 3
2. PNP switch adjustmentAT- 2 4 7
Transaxle noise in“ P”
and “N” positions.ON vehicle1. A/T fluid levelAT- 1 6
2. Line pressure testAT- 5 6
3. Accelerator pedal position sensorEC-532
4. Vehicle speed sensor·A/T (Revolution sensor)
and vehicle speed sensor·MTRAT- 1 0 7, AT- 1 6 6
OFF vehicle5. Oil pumpAT- 2 8 96. Torque converterAT- 2 6 8
Items Symptom Condition Diagnostic item Reference page

AT-76
TROUBLE DIAGNOSIS
Revision: June 20062007 Versa
OthersMaximum speed not
attained. Poor accel-
eration.ON vehicle1. A/T fluid levelAT- 1 6
2. PNP switch adjustmentAT- 2 4 6
3. Overdrive control switchAT- 1 8 6
4. Accelerator pedal position sensorEC-532
5. Vehicle speed sensor·A/T (Revolution sensor)
and vehicle speed sensor·MTRAT- 1 0 7, AT- 1 6 6
6. Shift solenoid valve AAT- 1 5 1
7. Shift solenoid valve BAT- 1 5 6
8. Control valve assemblyAT- 2 4 2
OFF vehicle9. Reverse clutchAT- 3 0 9
10. High clutchAT- 3 1 4
11. Brake bandAT- 3 4 3
12. Low & reverse brakeAT- 3 2 7
13. Oil pumpAT- 2 8 9
14. Torque converterAT- 2 6 8
Transaxle noise in
“D”, “2”, “1” and “R”
positions.ON vehicle 1. A/T fluid levelAT- 1 6
OFF vehicle 2. Torque converterAT- 2 6 8
Engine brake does
not operate in “1”
position.ON vehicle1. PNP switch adjustmentAT- 2 4 6
2. Control cable adjustmentAT- 2 3 3
3. Vehicle speed sensor·A/T (Revolution sensor)
and vehicle speed sensor·MTRAT- 1 0 7, AT- 1 6 6
4. Control valve assemblyAT- 2 4 2
5. Overrun clutch solenoid valveAT- 1 6 1
OFF vehicle6. Overrun clutchAT- 3 2 07. Low & reverse brakeAT- 3 2 7
Transaxle overheats.ON vehicle1. A/T fluid levelAT- 1 6
2. Engine idling speedEC-75
3. Accelerator pedal position sensorEC-532
4. Line pressure testAT- 5 6
5. Line pressure solenoid valveAT- 1 4 5
6. Control valve assemblyAT- 2 4 2
OFF vehicle7. Oil pumpAT- 2 8 9
8. Reverse clutchAT- 3 0 9
9. High clutchAT- 3 1 4
10. Brake bandAT- 3 4 3
11. Forward clutchAT- 3 2 0
12. Overrun clutchAT- 3 2 0
13. Low & reverse brakeAT- 3 2 7
14. Torque converterAT- 2 6 8
Items Symptom Condition Diagnostic item Reference page

DTC P0705 PARK/NEUTRAL POSITION (PNP) SWITCH
AT-97
D
E
F
G
H
I
J
K
L
MA
B
AT
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 P0710 A/T FLUID TEMPERATURE SENSOR CIRCUIT
AT-105
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: June 20062007 Versa
3. CHECK FLUID TEMPERATURE SENSOR CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect the TCM connector.
3. Check resistance between TCM connector terminals.
OK or NG
OK >> GO TO 7.
NG >> GO TO 4.
4. CHECK HARNESS BETWEEN TCM AND TERMINAL CORD ASSEMBLY HARNESS CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect terminal cord assembly harness connector and TCM connector.
3. Check continuity between terminal cord assembly harness con-
nector terminal and TCM connector terminal.
4. If OK, check harness for short to ground and short to power.
5. If OK, check continuity between ground and transaxle assembly.
6. Reinstall any part removed.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK A/T FLUID TEMPERATURE SENSOR WITH TERMINAL CORD ASSEMBLY
1. Turn ignition switch OFF.
2. Disconnect terminal cord assembly harness connector in engine room.
3. Check resistance between terminal cord assembly harness con-
nector terminals.
4. Reinstall any part removed.
OK or NG
OK >> GO TO 6.
NG >> Repair or replace damaged parts.
Item Connector Terminal Tempera-
ture [°C (°F)]Resistance
(Approx.)
A/T fluid
tempera-
ture sensorE32 47 - 4220 (68) 2.5 kΩ
80 (176) 0.3 kΩ
SCIA2338E
Item Connector Terminal Continuity
TCM E32 42
Ye s
Terminal cord assembly
harness connectorF30 7
TCM E32 47
Ye s
Terminal cord assembly
harness connectorF30 6
SCIA2660E
Item Connector Terminal Temperature
[°C (°F)]Resistance
(Approx.)
A/T fluid tem-
perature sensorF30 6 - 720 (68) 2.5 kΩ
80 (176) 0.3 kΩ
SCIA4948E

AT-116
DTC P0725 ENGINE SPEED SIGNAL
Revision: June 20062007 Versa
3. CHECK HARNESS BETWEEN TCM AND ECM
1. Turn ignition switch OFF.
2. Disconnect ECM connector and TCM connector.
3. Check continuity between ECM connector and TCM connector.
4. If OK, check harness for short to ground and short to power.
5. If OK, check continuity between body ground and transaxle
assembly.
6. Reinstall any part removed.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK DTC
Perform AT-113, "
DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 5.
5. CHECK TCM
1. Check TCM input/output signal. Refer to AT - 7 8 , "
TCM Terminals and Reference Value" .
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK >>INSPECTION END
NG >> Repair or replace damaged parts.
Item Connector Terminal Continuity
TCM E32 39
Ye s
ECM F10 13
SCIA7173E

DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE
AT-137
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: June 20062007 Versa
3. CHECK HARNESS BETWEEN TCM AND TERMINAL CORD ASSEMBLY HARNESS CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect terminal cord assembly harness connector and TCM connector.
3. Check continuity between terminal cord assembly harness con-
nector terminal and TCM connector terminal.
4. If OK, check harness for short to ground and short to power.
5. If OK, check continuity between ground and transaxle assembly.
6. Reinstall any part removed.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK VALVE RESISTANCE
1. Turn ignition switch OFF.
2. Disconnect terminal cord assembly connector in engine room.
3. Check resistance between terminal cord assembly harness con-
nector terminal and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
5. CHECK DTC
Perform AT-134, "
DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 6.
6. CHECK TCM
1. Check TCM input/output signal. Refer to AT-78, "
TCM Terminals and Reference Value" .
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK >>INSPECTION END
NG >> Repair or replace damaged parts.
Item Connector Terminal Continuity
TCM E31 3
Ye s
Terminal cord assembly
harness connectorF30 5
SCIA3263E
Solenoid valve Connector Terminal Resistance (Approx.)
Torque converter clutch
solenoid valveF30 5 - Ground 5 - 20 Ω
SCIA3456E

DTC P0745 LINE PRESSURE SOLENOID VALVE
AT-149
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: June 20062007 Versa
4. CHECK HARNESS BETWEEN TCM AND TERMINAL CORD ASSEMBLY HARNESS CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect terminal cord assembly harness connector and TCM connector.
3. Check continuity between terminal cord assembly harness con-
nector terminal and TCM connector terminal.
4. Check continuity between terminal cord assembly harness con-
nector terminal and dropping resistor harness connector termi-
nal.
5. Check continuity between dropping resistor harness connector
terminal and TCM connector terminal.
6. If OK, check harness for short to ground and short to power.
7. If OK, check continuity between ground and transaxle assembly.
8. Reinstall any part removed.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK DTC
Perform AT-145, "
DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 6.
6. CHECK TCM
1. Check TCM input/output signal. Refer to AT-78, "
TCM Terminals and Reference Value" .
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK >>INSPECTION END
NG >> Repair or replace damaged parts.
Item Connector Terminal Continuity
TCM E31 1
Ye s
Terminal cord assembly
harness connectorF30 4
SCIA3272E
Item Connector Terminal Continuity
Dropping resistor harness
connectorE49 2
Ye s
Terminal cord assembly
harness connectorF30 4
SCIA7194E
Item Connector Terminal Continuity
TCM E31 2
Ye s
Dropping resistor harness
connectorE49 1
SCIA7195E

DTC P0750 SHIFT SOLENOID VALVE A
AT-151
D
E
F
G
H
I
J
K
L
MA
B
AT
Revision: June 20062007 Versa
DTC P0750 SHIFT SOLENOID VALVE APFP:31940
DescriptionUCS005PF
Shift solenoid valves A and B are turned ON or OFF by the TCM in response to signals sent from the PNP
switch, vehicle speed and ECM (throttle opening). Gears will then be shifted to the optimum position.
CONSULT-II Reference ValueUCS005PG
On Board Diagnosis LogicUCS005PH

This is an OBD-II self-diagnostic item.

Diagnostic trouble code “P0750 SHIFT SOLENOID/V A” with CONSULT-II or 4th judgement flicker without
CONSULT-II is detected when TCM detects an improper voltage drop when it tries to operate the solenoid
valve.
Possible CauseUCS005PI

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

Shift solenoid valve A
DTC Confirmation ProcedureUCS005PJ
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.
4. Drive vehicle in “D” position and allow the transaxle to shift 1 →
2 (“GEAR”).
5. If the check result is NG, go to AT-153, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II”.
WITHOUT CONSULT-II
1. Start engine.
2. Drive vehicle in D
1 → D2 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-153, "
Diagnostic Procedure" .
Gear position1234
Shift solenoid valve A ON (Closed) OFF (Open) OFF (Open) ON (Closed)
Shift solenoid valve B ON (Closed) ON (Closed) OFF (Open) OFF (Open)
Item name Condition Display value
SHIFT S/V AWhen shift solenoid valve A operates.
(When driving in “D
1 ” or “D4 ”.)ON
When shift solenoid valve A does not operate.
(When driving in “D
2 ” or “D3 ”.)OFF
BCIA0031E