Transmission Speed Sensor: Service and Repair
REMOVAL AND INSTALLATIONAT-235 Components:
AT-236 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.
4. Remove rear propeller shaft.
5. Remove control rod.
6. Disconnect heated oxygen sensor 2 harness connectors (A).
<---: Vehicle front
<---: Bolt
7. Remove heated oxygen sensor 2 harness (B) from clips (1).
8. Remove bracket (2) from transmission assembly. (for VQ35DE models)
9. Remove oil pan, oil pan gasket and clips (VQ35DE models) or oil pan, oil pan gasket, brackets and clips (VK45DE models) according to the following procedures.
a. VQ35DE models
i. Remove clips (1).
ii. Remove oil pan (2) and oil pan gasket.
<---: Vehicle front
<---: Oil pan mounting bolt
b. VK45DE models
i. Remove clips (1) and brackets (2).
ii. Remove oil pan (3) and oil pan gasket.
<---: Vehicle front
<---: 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. Refer to AT-14, "A/T Fluid Cooler Cleaning". A/T Fluid Cooler Cleaning
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.
13. Remove rear extension assembly (VQ35DE models) or output shaft & companion flange complement (VK45DE models) according to the following procedures.
a. VQ35DE models
i. Remove tightening bolts for rear extension assembly and transmission case.
ii. Tap rear extension assembly with a soft hammer.
iii. Remove rear extension assembly from transmission case. (With needle bearing.)
b. VK45DE models
i. Remove tightening bolts (1) for output shaft & companion flange complement and transmission case.
2: Self-sealing bolt
<---: Bolt
ii. Tap output shaft & companion flange complement with a soft hammer.
iii. Remove output shaft & companion flange complement from transmission case
14. Disconnect revolution sensor connector.
CAUTION: Be careful not to damage connector
15. Straighten terminal clip to free revolution sensor harness.
16. Remove revolution sensor from transmission case.
CAUTION:
^ Do not subject it to impact by dropping or hitting it.
^ Do not disassemble.
^ Do not allow metal filings, etc., to get on the sensor's front edge magnetic area.
^ Do not 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.
1. Install revolution sensor in transmission case. Tighten a necessary bolt for revolution sensor with specified torque. Refer to "Components".
CAUTION:
^ Do not subject it to impact by dropping or hitting it.
^ Do not disassemble.
^ Do not allow metal filings, etc., to get on the sensor's front edge magnetic area.
^ Do not place in an area affected by magnetism.
2. Connect revolution sensor connector.
3. Securely fasten revolution sensor harness with clip.
4. Install rear extension assembly (VQ35DE models) or output shaft & companion flange complement (VK45DE models) according to the following procedures.
a. VQ35DE models
i. Apply recommended sealant (Genuine Anaerobic Liquid Gasket or equivalent.) to rear extension assembly as shown in the figure.
CAUTION: Completely remove all moisture, oil and old sealant, etc. from transmission case and rear extension assembly mounting surfaces.
ii. Install rear extension assembly to transmission case. (With needle bearing.)
CAUTION: Insert the tip of parking rod between the parking pole and the parking actuator support when assembling the rear extension assembly.
iii. Tighten rear extension assembly bolts to the specified torque. Refer to "REMOVAL AND INSTALLATION".
CAUTION: Do not reuse self-sealing bolts.
b. VK45DE models
i. Apply recommended sealant (Genuine Anaerobic Liquid Gasket or equivalent.) 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.
ii. Install output shaft & companion flange complement to transmission case.
iii. Tighten output shaft & companion flange complement bolts (1) to the specified torque. Refer to "REMOVAL AND INSTALLATION".
<---: Bolt
CAUTION: Do not reuse self-sealing bolts (2).
Refer to GI section to make sure icons (symbol marks) in the figure. Key to Symbols Used In Illustrations
5. Install rear engine mounting member.
6. Install oil pan, oil pan gasket and clips (VQ35DE models) or oil pan, oil pan gasket, brackets and clips (VK45DE models) according to the following procedures.
a. VQ35DE models
i. Install oil pan gasket to oil pan.
CAUTION:
^ Do not 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.
ii. Install oil pan (2) (with oil pan gasket) and clips (1) to transmission case.
<---: Vehicle front
<---: 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.
iii. 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: Do not reuse oil pan mounting bolts.
b. VK45DE models
i. Install oil pan gasket to oil pan.
CAUTION:
^ Do not 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.
ii. Install oil pan (3) (with oil pan gasket), clips (1) and brackets (2) to transmission case.
<---: Vehicle front
<---: 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).
iii. 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: Do not reuse oil pan mounting bolts.
7. Install drain plug to oil pan. Tighten a necessary drain plug with specified torque. Refer to "Components".
CAUTION: Do not reuse drain plug gasket.
8. Install control rod.
9. Install rear propeller shaft.
10. Install exhaust front tube and center muffler.
11. Pour ATF into A/T assembly.
12. Connect the battery cable to the negative terminal.