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:
B261A push-button ignition switch
Description
IPDM E/R transmits the push-button ignition switch status via CAN
communication to BCM. BCM receives
push-button ignition switch status by hardwire input. BCM compares the 2 signals
for mismatch.
DTC Logic
DTC DETECTION LOGIC
NOTE:
• If DTC B261A is displayed with DTC U1000, ...
Opener operation
Instrument panel
WARNING
● Do not drive with the trunk lid open. This
could allow dangerous exhaust gases
to be drawn into the vehicle. See “Exhaust
gas” in the “Starting and driving”
section of this manual.
Intelligent Key
● Closely supervise children when they
are ...
P0868 secondary pressure down
Description
The pressure control solenoid valve B (secondary pressure solenoid valve)
regulates the secondary pressure
to suit the driving condition in response to a signal sent from the TCM.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe ...