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Transmission Temperature Sensor/Switch: Service and Repair




Service Information

CVTF Temperature Sensor Removal and Installation

Removal

NOTE: The temperature sensor/solenoid wire harness is installed in the lower valve body, and not available separately from the lower valve body, replace the temperature sensor/solenoid wire harness and the lower valve body as an assembly.

1. Vehicle - Lift

1. Raise the vehicle on a lift, and make sure it is securely supported.

2. Intake Air Duct





1. Remove the intake air duct.

3. Intake Air Pipe





1. Remove the intake air pipe.

4. Solenoid Wire Harness Connector - Disconnection





1. Disconnect the connector.

5. Engine Under Cover Front as Needed





1. Remove the front engine under cover as needed.

6. CVTF - Drain





1. Remove the drain plug (A), and drain the CVT fluid (CVTF).

2. Remove metal particles from the magnetic surface of the drain plug.

3. Reinstall the drain plug with a new sealing washer (B).

7. CVTF Pan Assembly





1. Remove the CVTF pan (A), the dowel pins (B), and the gasket (C).

8. CVTF Strainer





1. Remove the CVTF strainer (A) from the lower valve body.

2. Remove the O-ring (B) from the CVTF strainer.

9. Lower Valve Body Assembly





1. Remove the lower valve body (A) and the connector (B) from the transmission housing, and hold the lower valve body.

NOTE: Do not damage the solenoid wire harness enough when you holding the lower valve body removing it.

2. Remove the O-ring (C) from the solenoid wire harness connector.

3. Remove the 8 x 40 mm pipes (D).

Installation

1. Lower Valve Body Assembly





1. Check the connector for corrosion, dirt, or oil, and clean or repair if necessary.

2. Install a new O-ring (A) on the connector (B).

3. Install the 8 x 40 mm pipes (C) on the CVT driven pulley pressure control solenoid valve and the CVT clutch pressure control solenoid valve.

4. Install the connector and the lower valve body (D) in the transmission housing.

2. CVTF Strainer





1. Install a new O-ring (A) on the CVTF strainer (B).

2. Install the CVTF strainer on the lower valve body.

3. CVTF Pan Assembly





1. Install the dowel pins (A) and a new gasket (B) on the transmission housing.

2. Install the CVTF pan (C), and tighten them to the specified torque in a crisscross pattern in at least two or three steps.

4. Engine Under Cover Front as Needed





1. Install the front engine under cover.

5. Solenoid Wire Harness Connector - Reconnection





1. Check the connector for corrosion, dirt, or oil, and clean or repair if necessary.

2. Connect the connector.

6. Intake Air Pipe





1. Install the intake air pipe.

7. Intake Air Duct





1. Install the intake air duct.

8. CVTF - Refill





1. Remove the dipstick (yellow loop) (A) from the dipstick tube.





2. Refill the transmission with the recommended fluid through the dipstick tube opening (A) to bring the fluid level between the upper mark and the lower mark of the dipstick. Always use Honda CVTF. Using a non-Honda CVTF can affect shift quality.












3. Insert the dipstick (A) with the dot (B) on the handle facing to the left of the vehicle.

9. Maintenance Minder Reset

1. After completing the entire procedure, select the individual maintenance item you wish to reset with the HDS. (See the Maintenance Minder General Information)

10. CVT Fluid Level - Check





NOTE:
* Keep all foreign particles out of the transmission.
* Check the CVTF level within 60-90 seconds after turning the engine off.
* Higher CVTF level may be indicated if the radiator fan comes on twice or more.

1. Park the vehicle on the level ground.

2. Start the engine, and warm it up to normal operating temperature (the radiator fan comes on twice), and turn the engine off.

3. Remove the dipstick (yellow loop) (A) from the dipstick tube, and wipe it with a clean cloth.

4. Insert the dipstick back into the dipstick tube.





5. Remove the dipstick, and check the CVTF level. It should be between the upper mark (A) and the lower mark (B) on the HOT level in tip of the dipstick (C).

6. If the CVT fluid level is below the lower mark, check for fluid leaks at the transmission, the CVTF filter, the CVTF cooler hoses, and the CVTF cooler lines. If a problem is found, fix it before filling the transmission with CVTF.

NOTE: If the vehicle is driven when the CVTF level is below the lower mark, one or more of these symptoms may occur:
* Noise from transmission in D, S, L, and R.
* Engine runs, but vehicle does not move in any position.
* No shift to a higher ratio or lower ratio.
* Flares while driving.
* Excessive shock when accelerating and decelerating.
* Vehicle does not creep on a flat road in D, S, and L.
* Late shift after shifting from N to D or N to R.
* Unstable rpm while driving.
* Stall speed high.

7. If the level is above the upper mark, drain the CVTF to proper level.





8. If necessary, fill the transmission with CVTF through the dipstick tube opening (A) to bring the fluid level between the upper mark and the lower mark of the dipstick. Do not fill the fluid above the upper mark. Always use Honda CVTF. Using a non-Honda CVTF can affect shift quality.





9. Insert the dipstick (A) with the dot (B) on the handle facing to the left of the vehicle.

11. HDS DLC - Connection





1. Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.

2. Turn the ignition switch to ON (II).

3. Make sure the HDS communicates with vehicle. If it does not communicate, go to the DLC circuit troubleshooting.

12. Start Clutch Pressure Control - Calibration

Start Clutch Pressure Control Calibration Procedure with the HDS

1. Select Start Clutch Feedback Learn in the Miscellaneous Test Menu with the HDS.

2. Test-drive the vehicle for several minutes, make sure the engine does not stall or flare when starting off, and verify that a problem does not occur on the start clutch pressure control system.

Start Clutch Pressure Control Calibration Procedure with SCS mode

1. Apply the parking brake, and block all four wheels securely.

2. Start the engine, and warm up the engine to normal operating temperature (the radiator fan comes on twice).

3. Make sure that the Malfunction Indicator Lamp (MIL) does not come on and the D indicator does not blink. If the MIL comes on or the D indicator blinks, check the fuel and emissions system or the CVT control system.

4. Select SCS mode in the Select Mode menu with the HDS.

5. Press the brake pedal, and continue pressing the pedal until the calibration is completed.

6. Start the engine without a load (headlights, audio system, blower fan, rear window defogger, A/C, etc.), and let it idle.

7. Shift the shift lever to N, shift to D, S, then L, and return to N. Repeat this shifting pattern twice within 20 seconds after the engine is started.

8. Follow the HDS screen prompts to open-circuit the SCS signal terminal using the tester menu, then disconnect the HDS from the DLC.

9. Check that the D indicator comes on when the shift lever is in N, then goes off.

10. If the D indicator blinks or does not come on, or if the indicator comes on and stays on, turn the ignition switch to LOCK (0), and restart the procedure with step 5.

11. Shift to D, and check that the D indicator comes on, then goes off.

12. If the D indicator blinks or does not come on, or if the indicator comes on and stays on, turn the ignition switch to LOCK (0), and restart the procedure with step 5.

13. Test-drive the vehicle for several minutes, make sure the engine does not stall or flare when starting off, and verify that a problem does not occur on the start clutch pressure control system.

Start Clutch Pressure Control Calibration Procedure by Driving the Vehicle

1. Start the engine, and warm up the engine to normal operating temperature (the radiator fan comes on twice).

2. Make sure that the MIL does not come on and the D indicator does not blink. If the MIL comes on or the D indicator blinks, check the fuel and emissions system or the CVT control system for DTCs. Troubleshoot accordingly.

3. Start the engine without a load (headlights, audio system, blower fan, rear window defogger, A/C, etc.), and let it idle.

4. Check the IMA battery level. If the IMA battery level indicator displays three segments or less, apply the parking brake, then start the engine with the shift lever in P or N, and hold it between 3,500 rpm and 4,000 rpm without load until the level gauge will display at half charged level.

5. Drive the vehicle with the shift lever in D until the vehicle speed reaches 37 mph (60 km/h), then release the accelerator and decelerate without pressing the brake pedal for at least 5 seconds to reach completion.

6. Test-drive the vehicle for several minutes, make sure the engine does not stall or flare when starting off, and verify that a problem does not occur on the start clutch pressure control system.
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