Nissan Altima L32. Instruction — part 1451
TM-148
< COMPONENT DIAGNOSIS >
[CVT: RE0F09B]
P0745 LINE PRESSURE SOLENOID VALVE
P0745 LINE PRESSURE SOLENOID VALVE
Description
INFOID:0000000004201703
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.
DTC Logic
INFOID:0000000004201704
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
NOTE:
If “DTC CONFIRMATION PROCEDURE” has been previously performed, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.
1.
CHECK DTC DETECTION
With CONSULT-III
1. Turn ignition switch ON.
2. Start engine and wait at least 5 seconds.
3. Perform “SELF-DIAG RESULTS” mode for “TRANSMISSION”.
With GST
Follow the procedure “With CONSULT-III”.
Is “P0745 L/PRESS SOL/CIRC” detected?
YES
>> Go to
NO
>> Check intermittent incident. Refer to
GI-42, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000004201705
1.
CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE) CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect TCM harness connector.
3. Check resistance between TCM harness connector F16 terminal
40 and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 2.
2.
CHECK HARNESS BETWEEN TCM AND CVT UNIT [PRESSURE CONTROL SOLENOID VALVE A (LINE
PRESSURE SOLENOID VALVE)] (PART 1)
DTC
Item
(CONSULT-III screen term)
Malfunction is detected when...
Possible cause
P0745
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 value.
• Harness or connectors
(Solenoid circuit is open or shorted.)
• Pressure control solenoid valve A (line
pressure solenoid valve)
TCM harness connector
Ground
Resistance (Ap-
prox.)
Connector
Terminal
F16
40
3.0 – 9.0
Ω
AWDIA0120ZZ
P0745 LINE PRESSURE SOLENOID VALVE
TM-149
< COMPONENT DIAGNOSIS >
[CVT: RE0F09B]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
1. Disconnect CVT unit connector.
2. Check continuity between TCM harness connector F16 (A) ter-
minal 40 and CVT unit harness connector F46 (B) terminal 2.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace damaged parts.
3.
CHECK HARNESS BETWEEN TCM AND CVT UNIT [PRESSURE CONTROL SOLENOID VALVE A (LINE
PRESSURE SOLENOID VALVE)] (PART 2)
Check continuity between TCM vehicle side harness connector F16
terminal 40 and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace damaged parts.
4.
CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
Check pressure control solenoid valve A (line pressure solenoid valve). Refer to
tion [Pressure Control Solenoid Valve A (Line Pressure Solenoid Valve)]"
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace transaxle assembly. Refer to
5.
DETECT MALFUNCTIONING ITEMS
Check TCM connector pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES
NO
>> Repair or replace damaged parts.
Component Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid
Valve)]
INFOID:0000000004201706
1.
CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
Check resistance between CVT unit terminal 2 and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace transaxle assembly. Refer to
TCM harness connector
CVT unit harness connector
Continuity
Connector
Terminal
Connector
Terminal
F16 (A)
40
F46 (B)
2
Existed
AWDIA0121ZZ
TCM harness connector
Ground
Continuity
Connector
Terminal
F16
40
Not existed
AWDIA0120ZZ
CVT unit terminal
Ground
Resistance (Approx.)
2
3.0 – 9.0
Ω
AWDIA0122ZZ
TM-150
< COMPONENT DIAGNOSIS >
[CVT: RE0F09B]
P0746 PRESSURE CONTROL SOLENOID A PERFORMANCE (LINE PRESSURE
SOLENOID VALVE)
P0746 PRESSURE CONTROL SOLENOID A PERFORMANCE (LINE
PRESSURE SOLENOID VALVE)
Description
INFOID:0000000004201707
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.
DTC Logic
INFOID:0000000004201708
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC CONFIRMATION PROCEDURE” has been previously performed, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.
1.
CHECK DTC DETECTION
With CONSULT-III
1. Turn ignition switch ON.
2. Select “DATA MONITOR”.
3. Start engine and maintain the following conditions for at least 10 consecutive seconds. Test start from 0
km/h (0 MPH).
With GST
Follow the procedure “With CONSULT-III”.
Is “P0746 PRS CNT SOL/A FCTN” detected?
YES
>> Go to
NO
>> Check intermittent incident. Refer to
GI-42, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000004201709
1.
CHECK LINE PRESSURE
Perform line pressure test. Refer to
TM-247, "Inspection and Judgment"
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace damaged parts. Refer to
TM-247, "Inspection and Judgment"
.
2.
CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
1. Turn ignition switch OFF.
2. Disconnect CVT unit harness connector.
DTC
Item
(CONSULT-III screen term)
Malfunction is detected when...
Possible cause
P0746
PRS CNT SOL/A FCTN
Unexpected gear ratio was detected in the
low side due to excessively low line pres-
sure.
• Line pressure control system
• Output speed sensor (secondary speed
sensor)
• Input speed sensor (primary speed sen-
sor)
ATF TEMP SEN
: 1.0
− 2.0 V
ACC PEDAL OPEN
: More than 1.0/8
RANGE
: “D” position
VEHICLE SPEED
: 10 km/h (6 MPH) or more
Driving location
: Driving the vehicle uphill (increased engine load) will help maintain the driving
conditions required for this test.
P0746 PRESSURE CONTROL SOLENOID A PERFORMANCE (LINE PRESSURE
SOLENOID VALVE)
TM-151
< COMPONENT DIAGNOSIS >
[CVT: RE0F09B]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
3. Check pressure control solenoid valve A (line pressure solenoid valve). Refer to
Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid Valve)]"
.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace transaxle assembly. Refer to
3.
CHECK OUTPUT SPEED SENSOR (SECONDARY SPEED SENSOR) SYSTEM
Check output speed sensor (secondary speed sensor) system. Refer to
.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace damaged parts.
4.
CHECK INPUT SPEED SENSOR (PRIMARY SPEED SENSOR) SYSTEM
Check input speed sensor (primary speed sensor) system. Refer to
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace damaged parts.
5.
DETECT MALFUNCTIONING ITEMS
Check TCM connector pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES
NO
>> Repair or replace damaged parts.
Component Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid
Valve)]
INFOID:0000000004201710
1.
CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
Check resistance between CVT unit terminal 2 and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace transaxle assembly. Refer to
CVT unit terminal
Ground
Resistance (Approx.)
2
3.0 – 9.0
Ω
AWDIA0122ZZ
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