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Home >> Infiniti >> 2010 >> M45 V8-4.5L (VK45DE) >> Repair and Diagnosis >> Transmission and Drivetrain >> Transmission Control Systems >> Sensors and Switches - Transmission and Drivetrain >> Sensors and Switches - A/T >> Transmission Speed Sensor >> Service and Repair

Transmission Speed Sensor: Service and Repair





ON-VEHICLE SERVICE


Output Speed Sensor Component (2WD Models Only)


REMOVAL AND INSTALLATION

Components











Removal
1. Disconnect the battery cable from the negative terminal.
2. Drain ATF through drain plug.
3. Remove exhaust front tube and center muffler with power tool. Removal and Installation
4. Remove rear propeller shaft. Removal and Installation.
5. Remove control rod. Control Rod Removal and Installation.





6. Disconnect heated oxygen sensor 2 harness connectors (A).

White arrow: Vehicle front

7. Remove heated oxygen sensor 2 harness (B) from clips (1).





8. Remove clips (1) and brackets (2).
9. Remove oil pan (3) and oil pan gasket.

White arrow: Vehicle front
Black arrow: Oil pan mounting bolt





10. Check foreign materials in oil pan to help determine causes of malfunction. If the ATF is very dark, smells burned, or contains foreign particles, the frictional material (clutches, band) may need replacement. A tacky film that will not wipe clean indicates varnish build up. Varnish can cause valves, servo, and clutches to stick and can inhibit pump pressure.
- If frictional material is detected, perform A/T fluid cooler cleaning. Component.
11. Support A/T assembly with a transmission jack.

CAUTION:
When setting transmission jack, place wooden blocks to prevent from damaging control valve with TCM and transmission case.
12. Remove rear engine mounting member with power tool. Transmission Assembly.





13. Remove tightening bolts (1) for output shaft & companion flange complement and transmission case.

2: Self-sealing bolt
Black arrow: Bolt





14. Tap output shaft & companion flange complement with a soft hammer.





15. Remove output shaft & companion flange complement from transmission case





16. Straighten terminal clip ( ) to free output speed sensor harness.
17. Disconnect output speed sensor connector (1).

CAUTION:
Be careful not to damage connector





18. Remove output speed sensor (1) from transmission case.

Black arrow: Bolt

CAUTION:
- Never subject it to impact by dropping or hitting it.
- Never disassemble.
- Never allow metal filings, etc., to get on the sensor's front edge magnetic area.
- Never place in an area affected by magnetism.

Installation

CAUTION:
After completing installation, check A/T fluid leakage, A/T fluid level and A/T position. Checking A/T Fluid, Testing and Inspection.





1. Install output speed sensor (1) in transmission case. Tighten a necessary bolt ( ) for output speed sensor with specified torque. Refer to "Components".

CAUTION:
- Never subject it to impact by dropping or hitting it.
- Never disassemble.
- Never allow metal filings, etc., to get on the sensor's front edge magnetic area.
- Never place in an area affected by magnetism.





2. Connect output speed sensor connector (1).





3. Securely fasten output speed sensor (1) harness with clip ( ).





4. Apply recommended sealant (Genuine Anaerobic Liquid Gasket or equivalent. Fluid Type Specifications.) to output shaft & companion flange complement as shown in the figure.

CAUTION:
Completely remove all moisture, oil and old sealant, etc. from the transmission case and output shaft & companion flange complement mounting surfaces.





5. Install output shaft & companion flange complement to transmission case.





6. Tighten output shaft & companion flange complement bolts (1) to the specified torque. Refer to "REMOVAL AND INSTALLATION".

Black arrow: Bolt

CAUTION:
Never reuse self-sealing bolts (2). Refer to GI section to make sure icons (symbol marks) in the figure. Key to Symbols.
7. Install rear engine mounting member. Transmission Assembly.
8. Install oil pan gasket to oil pan.

CAUTION:
- Never reuse oil pan gasket.
- Install it in the direction to align hole positions.
- Complete remove all moisture, oil and old gasket, etc. from oil pan gasket mounting surface.





9. Install oil pan (3) (with oil pan gasket), clips (1) and brackets (2) to transmission case.

White arrow: Vehicle front
Black arrow: Oil pan mounting bolt

CAUTION:
- Install it so that drain plug comes to the position as shown in the figure.
- Be careful not to pinch harnesses.
- Completely remove all moisture, oil and old gasket, etc. from oil pan mounting surface.
- Be careful with installation direction of brackets (2).





10. Tighten oil pan mounting bolts to the specified torque in numerical order shown in the figure after temporarily tightening them.
Tighten oil pan mounting bolts to the specified torque. Refer to "Components".

CAUTION:
Never reuse oil pan mounting bolts.
11. Install drain plug to oil pan. Tighten a necessary drain plug with specified torque. Refer to "Components".

CAUTION:
Never reuse drain plug and drain plug gasket.





12. Connect heated oxygen sensor 2 harness connectors (A).

White arrow: Vehicle front

13. Install heated oxygen sensor 2 harness (B) to clips (1).
14. Install control rod. Control Rod Removal and Installation.
15. Install rear propeller shaft. Removal and Installation.
16. Install exhaust front tube and center muffler. Removal and Installation.
17. Pour ATF into A/T assembly. .
18. Connect the battery cable to the negative terminal.
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