Nissan Maxima Service and Repair Manual: P1745 line pressure control
Description
The line pressure solenoid valve regulates the oil pump discharge pressure to suit the driving condition in response to a signal sent from the TCM.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
NOTE: Immediately after performing any "DTC CONFIRMATION PROCEDURE", always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.
1.CHECK DTC DETECTION
With CONSULT
-
Turn ignition switch ON
-
Select "Data Monitor" in "TRANSMISSION".
-
Check 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)
Diagnosis Procedure
1.CHECK DTC
With CONSULT
-
Start engine.
-
Perform "Self Diagnostic Results" in "TRANSMISSION".
P1740 select solenoid
Description
The lock-up select solenoid valve controls
lock-up clutch pressure or forward clutch pressure (reverse brake
pressure).
When controlling lock-up clutch, th ...
P1777 step motor
Description
The step motor changes the step by 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
c ...
Other materials:
Diagnosis and repair workflow
Work Flow
PRECAUTIONS FOR DIAGNOSIS
If steering angle sensor, steering system parts, suspension system parts, ABS
actuator and electric unit (control
unit) or if wheel alignment has been adjusted, be sure to adjust neutral
position of steering angle sensor
before driving. Refer to BRC-6, & ...
Trouble diagnosis
Condition of Error Detection
DTC (e.g. U1000 and U1001) of CAN communication is indicated on SELF-DIAG
RESULTS on CONSULT if a
CAN communication signal is not transmitted or received between units for 2
seconds or more.
CAN COMMUNICATION SYSTEM ERROR
CAN communication line open (CAN-H, ...
Engine speed signal circuit
Description
ECM sends engine speed signal to power steering control unit.
Diagnosis Procedure
1.PERFORM ECM SELF-DIAGNOSIS
With CONSULT
Perform ECM self-diagnosis.
2.CHECK HARNESS BETWEEN ECM AND POWER STEERING CONTROL UNIT FOR OPEN
Turn the ignition switch OFF.
Disconnect ECM connec ...
Nissan Maxima Owners Manual
- Illustrated table of contents
- Safety-Seats, seat belts and supplemental restraint system
- Instruments and controls
- Pre-driving checks and adjustments
- Monitor, climate, audio, phone and voice recognition systems
- Starting and driving
- In case of emergency
- Appearance and care
- Do-it-yourself
- Maintenance and schedules
- Technical and consumer information
Nissan Maxima Service and Repair Manual
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