Nissan Altima 2007-2012 Service Manual: Line pressure test

Inspection and Judgment


Line Pressure Test Port

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-261, "Stall Speed".

Line pressure: Refer to TM-261, "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.

Line Pressure

*1: Reference values


    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 temperat ...

    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:

    ECM 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 following terminals and connectors for damage, bend and loose connection (unit side and connector side). - ECM - Harnes ...

    Vehicle security indicator
    Description • Vehicle security indicator is built in combination meter. • NVIS (Nissan Vehicle Immobilizer System-NATS) and vehicle security system conditions are indicated by blink or illumination of vehicle security indicator. Component Function Check 1.CHECK FUNCTION 1. Perform “ ...

    On board diagnostic (OBD) system
    Diagnosis Description DESCRIPTION The CVT system has two self-diagnostic systems. The first is the emission-related on board diagnostic system (OBD-II) performed by the TCM in combination with the ECM. The malfunction is indicated by the MIL (malfunction indicator lamp) and is stored as a ...