Page 177 of 2898
3 CHECK INPUT SIGNAL (Without CONSULT-II)
Without CONSULT-II
1. Start engine.
2. Check voltage between TCM terminal 39 and ground.
Voltage (Idle speed):
Refer to EC-593, ªIdle Speed and Ignition Timingº.
SAT424JA
OK or NG
OK©GO TO 4.
NG©Check the following items:
+Harness for short or open between TCM and ECM
+Resistor and ignition coil
Refer to EC-547, ªIGNITION SIGNALº.
4 CHECK DTC
Perform Self-diagnosis Code confirmation procedure, AT-172.
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.
ENGINE SPEED SIGNALEXCEPT FOR EURO-OBD
Diagnostic Procedure (Cont'd)
AT-175
Page 178 of 2898

SAT283HC
DescriptionNJAT0061The 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
NJAT0061S01Remarks: 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 24%
¯
Approximately 95%
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 VALUENJAT0061S02Remarks: Specification data are reference values.
Terminal
No.Wire color Item ConditionJudgement stan-
dard
1 R/WLine pressure sole-
noid valve
When releasing accelerator pedal
after warming up engine.1.5 - 2.5V
When depressing accelerator pedal
fully after warming up engine.0.5V or less
2 P/BLine pressure sole-
noid valve (with
dropping resistor)When releasing accelerator pedal
after warming up engine.5 - 14V
When depressing accelerator pedal
fully after warming up engine.0.5V or less
ON BOARD DIAGNOSIS LOGICNJAT0061S03
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
: 10th judgement flicker
LINE PRESSURE SOLENOID
VALVE
EXCEPT FOR EURO-OBD
Description
AT-176
Page 179 of 2898
SAT580J
SAT824H
SELF-DIAGNOSIS CODE CONFIRMATION PROCEDURENJAT0061S05After the repair, perform the following procedure to confirm the
malfunction is eliminated.
With CONSULT-IINJAT0061S05011) Start engine.
2) Select ªSELF-DIAG RESULTSº mode for A/T with CONSULT-
II.
3) With brake pedal depressed, shift the lever from ªPº®ªNº®
ªDº®ªNº®ªPº positions.
Without CONSULT-IINJAT0061S05021) 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-44.
LINE PRESSURE SOLENOID
VALVE
EXCEPT FOR EURO-OBD
Description (Cont'd)
AT-177
Page 180 of 2898
Wiring Diagram Ð AT Ð LPSVNJAT0209
HAT096
LINE PRESSURE SOLENOID
VALVE
EXCEPT FOR EURO-OBD
Wiring Diagram Ð AT Ð LPSV
AT-178
Page 181 of 2898
Diagnostic ProcedureNJAT0062
1 CHECK VALVE RESISTANCE
1. Turn ignition switch to ªOFFº position.
2. Disconnect terminal cord assembly connector in engine compartment.
3. Check resistance between terminal 4 and ground.
Resistance:
2.5-5W
SAT895JA
OK or NG
OK©GO TO 2.
NG©1. Remove control valve assembly. Refer to AT-351.
2. Check the following items:
+Line pressure solenoid valve
Refer to ªComponent Inspectionº, AT-182.
+Harness of terminal cord assembly for short or open
LINE PRESSURE SOLENOID
VALVE
EXCEPT FOR EURO-OBD
Diagnostic Procedure
AT-179
Page 182 of 2898
2 CHECK POWER SOURCE CIRCUIT
1. Turn ignition switch to ªOFFº position.
2. Disconnect TCM harness connector.
3. Check resistance between terminal 4 and TCM harness connector terminal 2.
Resistance:
10-15W
SAT896JA
OK or NG
OK©GO TO 3.
NG©Check the following items:
+Dropping resistor
Refer to ªComponent Inspectionº, AT-182.
+Harness for short or open between TCM terminal 2 and terminal cord assembly (Main
harness)
LINE PRESSURE SOLENOID
VALVE
EXCEPT FOR EURO-OBD
Diagnostic Procedure (Cont'd)
AT-180
Page 183 of 2898
3 CHECK POWER SOURCE CIRCUIT
1. Turn ignition switch to ªOFFº position.
2. Check resistance between terminal 4 and TCM harness connector terminal 1.
Resistance:
Approx. 0W
SAT897JA
If OK, check harness for short to ground and short to power.
3. 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 Self-diagnosis Code confirmation procedure, AT-177.
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 SOLENOID
VALVE
EXCEPT FOR EURO-OBD
Diagnostic Procedure (Cont'd)
AT-181
Page 184 of 2898
SAT898JA
Component Inspection=NJAT0063LINE PRESSURE SOLENOID VALVENJAT0063S01+For removal, refer to AT-351.
Resistance CheckNJAT0063S0101+Check resistance between two terminals.
Solenoid valve Terminal No.Resistance
(Approx.)
Line pressure
solenoid valve4 Ground 2.5 - 5W
SAT899JA
Operation CheckNJAT0063S0102+Check solenoid valve by listening for its operating sound while
applying battery voltage to the terminal and ground.
SAT003K
DROPPING RESISTORNJAT0063S02+Check resistance between two terminals.
Resistance:
10-15W
LINE PRESSURE SOLENOID
VALVE
EXCEPT FOR EURO-OBD
Component Inspection
AT-182