Nissan Altima (L32) 2007-2012 Service Manual: Control valve

Exploded View

COMPONENT PARTS LOCATION

1. Transaxle assembly

2. Control valve

3. Bracket

4. O-ring

5. Oil strainer assembly

6. Magnet

7. Oil pan bolt

8. Oil pan

9. Oil pan gasket

10. Lock nut

11. Washer

12. Manual plate

13. Collar

14. Lip seal

15. Snap ring

A. CVT unit connector

For the following symbols, use the specified fluid.

Removal and Installation

REMOVAL

1. Disconnect negative battery terminal. Refer to PG-68, "Removal and Installation" (coupe), PG-139, "Removal and Installation" (sedan).

2. Pump out CVT fluid from CVT charging pipe.

3. Disconnect the CVT unit connector. Refer to TM-411, "Removal and Installation Procedure for CVT Unit Connector".

4. Remove the snap ring (1) from the CVT unit connector (A).

5. Press the CVT unit connector (A) into the transaxle case.

CAUTION: Never damage the CVT unit connector. NOTE: Clean around the connector to prevent foreign materials from entering into the transaxle case.

6. Remove the oil pan bolts, and then remove the oil pan and oil pan gasket.

7. Remove the magnets from the oil pan.

8. Remove the lock nut (1) and washer (2), and then remove the manual plate (3).

9. Remove the collar (4) from the manual shaft (A).

CAUTION: Never drop the collar.

10. Disconnect the connectors (A) and (B).

11. Remove the oil strainer assembly bolts (A) and (B), and then remove the oil strainer assembly (1).

12. Remove the bracket (1).

13. Remove the control valve bolts (A) and (B), and then remove the control valve from the transaxle case.

CAUTION: Never drop the control valve, ratio control valve and manual shaft.

14. Remove CVT unit connector (A) from the transaxle case inside.

15. Remove the lip seal (1) from the transaxle case.

INSTALLATION

1. Install the lip seal (1) to the transaxle case.

2. Install the CVT unit connector (A) to the transaxle case.

CAUTION: Connect the CVT unit connector with the stopper facing up, and then press in until it clicks.

3. Press in the ratio control valve (B) in the ( ) direction, and then fix the linkage in the position shown with the linkage fixing pin (A) from the back of control valve through the hole for fixing.

4. Check that one end of linkage engages with the step motor end (C) and that the linkage is in the direction shown.

5. Install the control valve to the transaxle case.

CAUTION: • Never drop the linkage fixing pin. If it is dropped, repeat the installation procedure from step 3.

• Never pinch the harness into between the control valve and the transaxle case.

6. Fix the control valve using the control valve bolts (A) and (B).

7. Pull the linkage fixing pin out.

8. Connect the connectors (A) and (B).

CAUTION: • Never pinch the harness into between the control valve and the transaxle case.

• Securely insert the connector until it clicks and locks.

9. Install the bracket (1).

10. Install the oil strainer assembly (1) using the oil strainer assembly bolts (A) and (B).

CAUTION: • Never reuse O-ring.

• Apply NISSAN CVT fluid NS-2 when installing the O-ring.

NOTE: Remove the bracket and adjust the position again if the bolt hole positions are not aligned.

11. Install the collar to the manual shaft.

CAUTION: Never drop the collar.

12. Assemble the manual plate (1) while aligning with the groove (A) of the manual valve, and then tighten washer (2) the lock nut (3) to the specified torque.

CAUTION: Assemble the manual plate while aligning its end with the cutout ( ) of the manual valve.

13. Install the snap ring of CVT unit connector, and then connect the CVT unit harness connector.

14. Install the magnet while aligning it with the convex side of oil pan.

CAUTION: Completely eliminate the iron powder from the magnet area of oil pan and the magnet.

• Never reuse oil pan gaskets. 16. Install the oil pan assembly to the transaxle case with the following procedure.

1. Install the oil pan assembly to the transaxle case, and then temporarily tighten the oil pan bolt.

CAUTION: Never reuse oil pan bolts. 2. Tighten the oil pan bolts in the order shown to the specified torque.

3. Tighten the oil pan bolts again clockwise from (1) shown to the specified torque.

17. Fill CVT fluid from CVT fluid charging pipe to the specified level.

CAUTION: • Use only Genuine NISSAN CVT Fluid NS-2. Never mix with other fluid.

• Delete CVT fluid deterioration date with CONSULT-III after changing CVT fluid. Refer to TMxx," CONSULT-III Function (TRANSMISSION)".

18. With the engine warmed up, drive the vehicle in an urban area.

NOTE: When ambient temperature is 20°C (68°F), it takes about 10 minutes for the CVT fluid to warm up to 50° to 80°C (122° to 176°F).

19. Check CVT fluid level and condition. Refer to TM-416, "Inspection".

20. Connect negative battery terminal. Refer to PG-68, "Removal and Installation" (coupe), PG-139, "Removal and Installation" (sedan).

Inspection and Adjustment

INSPECTION AFTER REMOVAL

Check oil pan for foreign material.

• If a large amount of worn material is found, clutch plate may be worn.

• If iron powder is found, bearings, gears, or clutch plates may be worn.

• If aluminum powder is found, bushing may be worn, or chips or burrs of aluminum casting parts may enter.

Check points where wear is found in all cases.

INSPECTION AFTER REMOVAL

Check the CVT fluid level and leakage. Refer to TM-416, "Inspection".

INSPECTION AFTER INSTALLATION

Erase the TCM data.

• Erase the CVT fluid degradation level data using CONSULT-III. Refer to TM-298, "CONSULT-III Function (TRANSMISSION)".

• Erase the memory of ROM using CONSULT-III. Refer to TM-298, "CONSULT-III Function (TRANSMISSION)".