Honda Pilot: A/T Hydraulic Control Unit Removal and Installation

Removal

CAUTION

Before following the procedure, be sure to observe precautions and eliminate static electricity.

NOTE:

• Clean the area around the hydraulic control unit before this procedure.
• Keep all foreign particles out of the transmission.
• Do not disassemble the hydraulic control unit. If any problem occurs, replace the assembly.

1. Vehicle - Lift

2. Splash Shield - Remove

3. ATF - Drain

4. Engine Coolant - Drain

5. Air Cleaner - Remove

6. Intake Air Guide - Remove

7. 12 Volt Battery - Remove

8. 12 Volt Battery Box - Remove

1. Disconnect the connector (A).

9. 12 Volt Battery Duct - Remove

10.12 Volt Battery Base - Remove

1. Remove the harness clamps (A).

11.ATF Warmer - Remove

12.Transmission Fluid Pan - Remove

1. Disconnect the connector (A) by rotating the lock lever (B) counterclockwise.
2. Remove the clamp (C).
3. Remove the transmission fluid pan (D).

13.Hydraulic Control Unit/Sensor Unit - Remove

1. Remove the hydraulic control unit mounting TORX bolts (A) using a TORX T40 bit.

NOTE: Do not remove the TORX bolts T30 (B).

2. Remove the hydraulic control unit (A).

3. Remove the dual speed sensor (B) and the park position sensor (C).
4. Remove the pipes (A).

NOTE: Be careful not to drop the pipes into the transmission.

5. Disconnect the connector (A).
6. Remove the sensor unit (B).

Installation

CAUTION

Before following the procedure, be sure to observe precautions and eliminate static electricity.

NOTE:

• Keep all foreign particles out of the transmission.
• Apply a light coat of clean ATF on all O-rings before installation.
• When connecting the connector, check for corrosion, dirt, or oil, and clean or repair if necessary.

1. Hydraulic Control Unit/Sensor Unit - Install

1. Install a new sensor unit (A) with new bolts (B).

   NOTE: Make sure each connector is completely connecting to the hydraulic control unit.

2. Connect the connector (C).

3. Install new pipes (A) in the transmission.

   NOTE: Be careful not to drop the pipes into the transmission.

4. Install the dual speed sensor (A) with new bolts, and the park position sensor (B).

NOTE:

• Align the pin (C) on the park position sensor with the hole (D) in the transmission housing.

5. Install the hydraulic control unit (F) straight into the transmission as shown.

NOTE:

• Align the pins (G) on the hydraulic control unit with the holes (H) in the transmission housing.
• Align the parking lock actuator (I) with the tip (J) of the control lever.
• Be careful not to damage the harness (K) while installing the hydraulic control unit.

6. Tighten new bolts (A) in two steps:

1. Tighten the bolts to 1.5－4.0 N-m (0.15－0.41 kgf-m, 1.1－3.0 lbf-ft) at first in the numbered sequence shown.
2. Tighten the bolts to 8.0 N-m (0.82 kgf-m, 5.9 lbf-ft) in the numbered sequence shown.

2. Transmission Fluid Pan - Install

1. Clean the mounting surfaces of the transmission housing.

   NOTE: Do not allow dust or other foreign particles to enter the transmission.

2. Install a new transmission fluid pan (A) while aligning the connector (B) with the hole (C) in the transmission fluid pan.
3. Install a new clamp (D).
4. Tighten new bolts (E) in two steps:

1. Tighten the bolts to 3.0－5.0 N-m (0.31－0.51 kgf-m, 2.2－3.7 lbf-ft) at first in the numbered sequence shown.
2. Tighten the bolts to 9.5 N-m (0.97 kgf-m, 7.0 lbf-ft) in the numbered sequence shown.

5. Connect the connector (F) by rotating the lock lever (G) clockwise.

3. ATF Warmer - Install

4. 12 Volt Battery Base - Install

1. Install the harness clamps (A).

5. 12 Volt Battery Duct - Install

6. 12 Volt Battery Box - Install

1. Connect the connector (A).

7. 12 Volt Battery - Install

8. Intake Air Guide - Install

9. Air Cleaner - Install

10.Engine Coolant - Refill

11.ATF - Refill

12.Splash Shield - Install

Procedure After Replacing Hydraulic Control Unit

13.Hydraulic Pressure Characteristic - Calibrate

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