Page 153 of 3051
SAT250K
SAT812HA
SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURENLAT0269S05After the repair, perform the following procedure to confirm the
malfunction is eliminated.
With CONSULT-IINLAT0269S05011) Start engine.
2) Select ªSELF-DIAG RESULTSº mode for CVT with CONSULT-
II.
3) Drive vehicle in D position.
Without CONSULT-IINLAT0269S05021) Start engine.
2) Drive vehicle in D position.
3) Perform self-diagnosis.
Refer to ªSELF-DIAGNOSTIC PROCEDURE (Without
CONSULT-II)º, AT-35.
LINE PRESSURE SENSOREXCEPT FOR EURO-OBD
Description (Cont'd)
AT-152
Page 154 of 3051
Wiring Diagram Ð AT Ð LPSNLAT0270MODELS WITH ECM IN ENGINE COMPARTMENTNLAT0270S01
YAT183
LINE PRESSURE SENSOREXCEPT FOR EURO-OBD
Wiring Diagram Ð AT Ð LPS
AT-153
Page 155 of 3051
MODELS WITH ECM IN CABINNLAT0270S02
YAT218
LINE PRESSURE SENSOREXCEPT FOR EURO-OBD
Wiring Diagram Ð AT Ð LPS (Cont'd)
AT-154
Page 156 of 3051

Diagnostic ProcedureNLAT0271
1 CHECK PRESSURE SENSOR
Refer to ªComponent Inspectionº, AT-156.
OK or NG
OK (With CONSULT-II)©GO TO 2.
OK (Without CONSULT-
II)©GO TO 3.
NG©Repair or replace pressure sensor.
2 CHECK INPUT SIGNAL (With CONSULT-II)
With CONSULT-II
1. Start engine.
2. Select ªTCM Input Item Parameter Listº in ªDATA MONITORº mode for ªCVTº with CONSULT-II.
3. Read out the value of ªLINE PRES DTYº while driving.
+Throttle valve fully closed (PL Duty: 4%): Approx. 1.0V
+Throttle valve fully depressed (PL Duty: 94%): Approx. 4.0V
OK or NG
OK©GO TO 4.
NG©Check the following items:
+Harness for short or open between TCM, ECM and CVT fluid pressure sensor (Main
harness)
+Ground circuit for ECM
Refer to EC section (ªTROUBLE DIAGNOSIS FOR POWER SUPPLYº).
3 CHECK INPUT SIGNAL (Without CONSULT-II)
Without CONSULT-II
Refer to ªComponent Inspectionº, AT-156.
OK or NG
OK©GO TO 4.
NG©Check the following items:
+Harness for short or open between TCM, ECM and CVT fluid pressure sensor (Main
harness).
+Ground circuit for ECM
Refer to EC section (ªTROUBLE DIAGNOSIS FOR POWER SUPPLYº).
4 CHECK DTC
Perform ªSELF-DIAGNOSIS CONFIRMATION PROCEDUREº, AT-152.
OK or NG
OK©INSPECTION END
NG©1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness con-
nector.
LINE PRESSURE SENSOREXCEPT FOR EURO-OBD
Diagnostic Procedure
AT-155
Page 157 of 3051
SAT265K
Component Inspection=NLAT0272LINE PRESSURE SENSORNLAT0272S01+Start engine.
+Check voltage between terminals 1 and 6, 10 and 6.
Terminal No. Voltage
1 6 Approx. 0.5 - 4.5V
10 6 Approx. 4.5 - 5.5V
LINE PRESSURE SENSOREXCEPT FOR EURO-OBD
Component Inspection
AT-156
Page 158 of 3051

DescriptionNLAT0273The line pressure solenoid valve regulates the oil pump discharge
pressure to suit the driving condition in response to a signal sent
from the TCM.
The line pressure duty cycle value is not consistent when the
closed throttle position switch is ªONº. To confirm the line
pressure duty cycle at low pressure, the accelerator (throttle)
should be open until the closed throttle position switch is
ªOFFº.
CONSULT-II REFERENCE VALUE IN DATA MONITOR
MODE
NLAT0273S01Remarks: Specification data are reference values.
Monitor item Condition Specification
Line pressure solenoid valve dutySmall throttle opening
(Low line pressure)
¯
Large throttle opening
(High line pressure)Approximately 4%
¯
Approximately 94%
NOTE:
The line pressure duty cycle value is not consistent when the closed throttle position switch is ªONº. To confirm the line pressure duty
cycle at low pressure, the accelerator (throttle) should be open until the closed throttle position switch is ªOFFº.
TCM TERMINALS AND REFERENCE VALUENLAT0273S02Remarks: Specification data are reference values.
Terminal
No.Wire color Item ConditionJudgement stan-
dard (Approx.)
1 R/WLine pressure
solenoid valve
When releasing accelerator pedal
after warming up engine.2.8V
When depressing accelerator pedal
fully after warming up engine.1.4V
2 P/BLine pressure
solenoid valve
(with dropping
resistor)When releasing accelerator pedal
after warming up engine.11.0V
When depressing accelerator pedal
fully after warming up engine.4.0V
ON BOARD DIAGNOSIS LOGICNLAT0273S03
Diagnostic trouble code Malfunction is detected when ... Check items (Possible cause)
: LINE PRESSURE S/V TCM detects an improper voltage drop
when it tries to operate the solenoid
valve.+Harness or connectors
(The solenoid circuit is open or shorted.)
+Line pressure solenoid valve
: 6th judgement flicker
LINE PRESSURE
SOLENOID VALVE
EXCEPT FOR EURO-OBD
Description
AT-157
Page 159 of 3051
SAT250K
SAT815HA
SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURENLAT0273S04After the repair, perform the following procedure to confirm the
malfunction is eliminated.
With CONSULT-IINLAT0273S04011) Start engine.
2) Select ªSELF-DIAG RESULTSº mode for CVT with CONSULT-
II.
3) With brake pedal depressed, shift the lever from ªPº®ªNº®
ªDº®ªNº®ªPº positions.
Without CONSULT-IINLAT0273S04021) Start engine.
2) With brake pedal depressed, shift the lever from ªPº®ªNº®
ªDº®ªNº®ªPº positions.
3) Perform self-diagnosis.
Refer to ªSELF-DIAGNOSTIC PROCEDURE (Without
CONSULT-II)º, AT-35.
LINE PRESSURE
SOLENOID VALVE
EXCEPT FOR EURO-OBD
Description (Cont'd)
AT-158
Page 160 of 3051
Wiring Diagram Ð AT Ð LPSVNLAT0274
YAT180
LINE PRESSURE
SOLENOID VALVE
EXCEPT FOR EURO-OBD
Wiring Diagram Ð AT Ð LPSV
AT-159