Nissan Altima 2007-2012 Service Manual: Line pressure test

Inspection and Judgment


Line Pressure Test Port (A)

Line Pressure Test Procedure

1. Inspect the amount of engine oil and replenish if necessary.

2. Drive the car for about 10 minutes to warm it up so that the CVT fluid reaches in the range of 50 to 80°C (122 to 176°F), then inspect the amount of CVT fluid and replenish if necessary.

NOTE: The CVT fluid temperature rises in the range of 50 to 80°C (122 to 176°F) during 10 minutes of driving.

3. After warming up CVT, remove the oil pressure detection plug and install the oil pressure gauge [special service tool: — (OTC3492)].

CAUTION: When using the oil pressure gauge, be sure to use the O-ring attached to the oil pressure detection plug.

4. Securely engage the parking brake so that the tires do not turn.

5. Start the engine, and then measure the line pressure at both idle and the stall speed.

CAUTION: • Keep the brake pedal pressed all the way down during measurement.

• When measuring the line pressure at the stall speed.

Refer to TM-451, "Stall Speed".

Line pressure : Refer to TM-451, "Line Pressure"

6. After the measurements are complete, install the oil pressure detection plug and tighten to the specified torque below.

CAUTION: • Do not reuse O-ring.

• Apply CVT fluid to O-ring.


    Stall test
    Inspection and Judgment INSPECTION 1. Inspect the amount of engine oil. Replenish the engine oil if necessary. 2. Drive for about 10 minutes to warm up the vehicle so that the CVT fluid tempera ...

    Road test
    Description DESCRIPTION • The purpose of the test is to determine overall performance of CVT and analyze causes of problems. • The road test consists of the following three parts: 1. “Che ...

    Other materials:

    Idle speed
    Description This describes how to check the idle speed. For the actual procedure, follow the instructions in “BASIC INSPECTION”. Special Repair Requirement 1.CHECK IDLE SPEED Check idle speed in “DATA MONITOR” mode with CONSULT-III. Check idle speed with Service $01 of GST. > ...

    P0144 HO2S3
    Description The heated oxygen sensor 3, after HC adsorption catalyst (Under floor), monitors the oxygen level in the exhaust gas on each bank. This sensor is made of ceramic zirconia. The zirconia generates voltage from approximately 1V in richer conditions to 0V in leaner conditions. Unde ...

    Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along with a front seat belt, helps to reduce the risk or severity of injury to the dr ...