Nissan Altima 2007-2012 Service Manual: P1745 line pressure control
Description
The pressure control solenoid valve A (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: 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
1. Turn ignition switch ON 2. Select “DATA MONITOR”.
3. Make sure 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)
Is “P1745 L/PRESS CONTROL” detected? YES >> Go to TM-360, "Diagnosis Procedure".
NO >> Check intermittent incident. Refer to GI-42, "Intermittent Incident".
Diagnosis Procedure
1.CHECK DTC
1. Start engine.
2. Perform “SELF-DIAG RESULTS” mode for “TRANSMISSION”.
is “P1745 L/PRESS CONTROL” displayed? YES >> Replace TCM. Refer to TM-430, "Removal and Installation".
NO >> Check intermittent incident. Refer to GI-42, "Intermittent Incident".
P1740 lock-up select solenoid valve
Description
• Lock-up select solenoid valve controls lock-up clutch pressure or forward
clutch pressure (reverse brake
pressure).
• When controlling lock-up clutch, the valve is turned OFF ...
P1777 step motor
Description
The step motor changes the step with 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
...
Other materials:
Using the system
Initialization
When the ignition switch is in the ON position,
NISSAN Voice Recognition is initialized, which
takes a few seconds. When completed, the system
is ready to accept voice commands. If
the button is pressed before the
initialization
completes, the system will announce: “Voice
...
Ignition timing
Description
This describes how to check the ignition timing. For the actual procedure,
follow the instructions in “BASIC
INSPECTION”.
IGNITION TIMING : Special Repair Requirement
1.CHECK IGNITION TIMING
1. Attach timing light to No. 1 igniton coil (1) wire as shown.
2. Check ignitio ...
STRG branch line circuit
Diagnosis Procedure
INSPECTION PROCEDURE
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the terminals and connectors of the steering angle sensor for damage,
bend and loose connection
(unit side and connector side) ...