Clicking from the Driver’s Power Seat While Using the Height or Tilt Adjustment – 2016-2018 Honda Pilot & 2017-2019 Ridgeline

Service Bulletin

A18-034
April 16, 2018
Version 1

 

Clicking from the Driver’s Power Seat While Using the Height or Tilt Adjustment

 

AFFECTED VEHICLES

Year Model Trim VIN Range
2016-18 Pilot EX, EX-L, Touring, Elite ALL
2017-19 Ridgeline RT-L, RTL-T, RTL-E, Black Edition ALL

 

SYMPTOM

When adjusting the driver’s seat height or tilt, the power seat does not move or moves just a small amount and clicks loudly during operation.

 

POSSIBLE CAUSES

The vertical transmission assembly (VTA) unit has a stripped internal gear.

 

CORRECTIVE ACTION

Replace the height adjust VTA unit and/or tilt adjust VTA unit.

 

TOOL INFORMATION

Part Name Tool Number Quantity
Meshing Tool 07AAF-2GAA100 1
U-Joint Removal Tool – See note below before ordering. OTC7248  1
Adapter G – See note below before ordering. 07XAF-001050B 1

NOTES

  • The U-Joint Removal Tool and Adapter G can be substituted with a commercially available 6-inch C-clamp with a 1-inch foot.
  • The U-Joint Removal Tool is a required dealer tool. If you need another one, call the Honda Tool and Equipment program at 888-424-6857.

 

PARTS INFORMATION

NOTE

The VTA unit is universal. The same unit is used for either tilt or height.

Part Name Part Number Quantity
VTA Unit (Tilt or Height) for driver’s side with non-memory seat (Includes grease and 3 nuts) 81603-T2F-A31 1
VTA Unit (Tilt or Height) for driver’s side with memory seat (Includes grease and 3 nuts) 81603-T2F-A51 1

 

WARRANTY CLAIM INFORMATION

The normal warranty applies.

Operation
Number
Description Flat
Rate
Time
Defect
Code
Symptom
Code
Template
ID
Failed
Part
Number
7491A5 Replace the height VTA unit (non-memory seat). 1.0 hrs 01801 04202 A18034A 81603-T2F-A31
7491A3 Replace the tilt VTA unit (non-memory seat). 1.0 hrs 01801 04202 A18034B 81603-T2F-A31
7491D8 Replace both VTA units (non-memory seat). 1.1 hrs 01801 04202 A18034C 81603-T2F-A31
7491A5 Replace the height VTA unit (memory seat). 1.0 hrs 01801 04202 A18034D 81603-T2F-A51
7491A3 Replace the tilt VTA unit (memory seat). 1.0 hrs 01801 04202 A18034E 81603-T2F-A51
7491D8 Replace both VTA units (memory seat). 1.1 hrs 01801 04202 A18034F 81603-T2F-A51

Skill Level: Repair Technician

 

INSPECTION

NOTES

  • Before replacing a VTA unit, check which VTA unit is causing the noise and replace only the affected unit.
  • In most cases, only one VTA unit is damaged. It is rare to replace both.

 

Height Adjust VTA

Adjust the seat height. If you hear a loud clicking or ratcheting from the seat height VTA unit and the height adjustment does not move very much, go to REPAIR PROCEDURE A (HEIGHT ADJUST VTA REPLACEMENT).

 

Tilt Adjust VTA

Adjust the seat tilt. If you hear a loud clicking or ratcheting from the seat tilt VTA unit and the tilt adjustment does not move very much, go to REPAIR PROCEDURE B (TILT ADJUST VTA REPLACEMENT).

 

SETTING UP THE MESHING TOOL

  1. Make sure the set screws are installed on the meshing tool. If they are not installed, install them without passing through the inner cutout of the tool.

set screws

  1. Install the meshing tool onto the U-Joint Removal Tool (T/N OTC7248) or universal 6-inch C-clamp. Hand tighten the set screws with a hex tool.

NOTE

If you are using a 6-inch C-clamp, the foot of the C-Clamp must be 1-inch in diameter for the meshing tool to fit correctly.

U-Joint Removal Tool

  1. If you are using the U-Joint Removal Tool (T/N OTC7248), install Adaptor G (T/N 07XAF-001050B).

Adaptor G

 

REPAIR PROCEDURE A (HEIGHT ADJUST VTA UNIT REPLACEMENT)

CAUTION
Be careful; there are many sharp edges. Wear protective gloves. Always wear protective eyewear when using a hammer or impact tools.
  1. Turn the ignition switch to the ON position and check if the SRS indicator comes on for about 6 seconds, then turns off.
    • If the indicator comes on, then turns off after about 6 seconds, go to step 2.
    • If the indicator does not come on, or if it stays on, check the SRS DTC and record it.
  2. Adjust the seat to the highest position possible, then lower by about 1/2 inch.
  3. Disconnect the battery negative cable and wait at least 3 minutes before continuing.
  4. Remove the affected seat and seat cushion cover/pad. Refer to the service information for the model and model year you are working on.

NOTES

  • Do not remove the cushion cover from the foam pad. Remove both parts as an assembly.
  • For reference during assembly, take a photo of the harness routing and clip location layout as shown.
  • Ventilated seat is shown. It may differ slightly from the seat you are repairing.

Remove the affected seat and seat cushion cover/pad

  1. Remove the seat ventilator from seat bottom (if equipped).

seat ventilator

  1. Remove any harnesses or harness clips that will prevent removal of the cushion pan.
  2. Remove the four 10 mm bolts from the front cushion pan.

four 10 mm bolts

  1. Lift the cushion pan, and hold it up with a bungee cord or set the seat on its back on a clean surface to keep the cushion pan out of the way.
  2. Disconnect the VTA unit connector.

VTA unit connector

  1. Remove the VTA unit nuts, then remove the VTA unit.

VTA unit nuts

NOTES

  • If the seat frame is too low and you cannot access the VTA unit nut, use an open end wrench.
  • If it is difficult to remove the VTA unit after removing the nuts, hit the center shaft of the VTA unit with a punch tool and hammer to remove it.

hit the center shaft of the VTA unit with a punch

  1. Raise the seat as much as possible by pulling the seat frame as shown. This allows easier meshing of the gear teeth when installing the new VTA motor.

NOTE

The photo below shows how the seat should look after it is raised.

Raise the seat as much as possible

CAUTION
Place a hammer handle (or similar tool) between the upper and lower sections of the seat frame to prevent the rear of the frame from collapsing and pinching fingers. Remove the blocking hammer ONLY when you have installed and aligned the new VTA motor.

Place a hammer handle (or similar tool) between the upper and lower sections

  1. Wipe off any excess grease from the seat frame gear teeth with a paper towel or clean rag.

Wipe off any excess grease

 

  1. Apply the provided grease to the new VTA unit motor splines.

NOTE

Only 1/8th of the grease packet is needed. Do not use the whole packet.

Apply the provided grease

 

  1. Mount the new VTA unit onto the seat frame.

Mount the new VTA unit

  1. While applying pressure to keep the VTA unit against the seat frame, use a rubber mallet or plastic hammer to hit the frame downwards. This will allow the VTA unit splines to align and engage with the frame gear.

While applying pressure to keep the VTA unit against the seat frame, use a rubber mallet or plastic hammer to hit the frame downwards

  1. Make sure the VTA unit splines and seat frame gear are properly engaged. The VTA unit center shaft should be protruding from the frame.

NOTES

  • You may need to adjust or remove the blocking hammer handle if it is preventing proper gear engagement.
  • Use caution as the seat will NOT be fully supported and may collapse or pinch fingers until the new VTA unit is secured to the seat frame.

The VTA unit center shaft should be protruding from the frame

  1. Place the meshing tool as shown. Center the tool on the pinion shaft protruding from the VTA unit.

NOTICE

  • DO NOT over tighten the C-clamp.
  • DO NOT attempt to install the VTA unit without using the meshing tool. Seating the VTA unit by tightening the nuts will damage the VTA unit.

Place the meshing tool as shown

  1. Gradually tighten the C-clamp until the VTA unit shaft is protruding out of the frame. Once the VTA unit shaft is protruding, go to the next step.

NOTICE

  • DO NOT over tighten the C-clamp.
  • DO NOT attempt to install the VTA unit without using the meshing tool. Seating the VTA unit by tightening the nuts will damage the VTA unit.

Gradually tighten the C-clamp

  1. With the C-clamp still in place, install the new VTA unit nuts and snug them with a wrench.

With the C-clamp still in place, install the new VTA unit nuts and snug them

  1. Remove the C-clamp, and torque the nuts to 25 N•m (18 lb-ft).

Remove the C-clamp, and torque the nuts

  1. Make sure the VTA unit is supporting the seat’s weight, then remove the blocking hammer or tool.
  2. Connect the VTA unit connector.
  3. Lower the seat cushion pan, and install the bolts. Torque the bolts to 7 N•m (5 lb-ft).

Lower the seat cushion pan, and install the bolts

  1. Route and install the harnesses and the harness clips.

NOTE

Make sure the routing is correct by looking at the photo you took before disassembly.

  1. Install all other removed parts in the reverse order of removal, and install the seat.
  2. Reconnect the battery.
  3. If you are repairing a memory seat, clear the driving position memory as outlined in the service information.
  4. Make sure the height and tilt functions on the seat work properly and the noise is gone.
  5. Turn the ignition switch to the ON position and check if the SRS indicator comes on for about 6 seconds, then turns off.
    • If the indicator comes on, then turns off after about 6 seconds, the procedure is complete.
    • If the SRS indicator did not perform correctly at the beginning of the procedure, check to see if the same problem exists. If there are additional problems, make sure all of the reassembly steps were completed.

 

REPAIR PROCEDURE B (TILT ADJUST VTA UNIT REPLACEMENT)

CAUTION
Be careful; there are many sharp edges. Wear protective gloves. Always wear protective eyewear when using a hammer or impact tools.
  1. Turn the ignition switch to the ON position and check if the SRS indicator comes on for about 6 seconds, then turns off.
    • If the indicator comes on, then turns off after about 6 seconds, go to step 2.
    • If the indicator does not come on, or if it stays on, check the SRS DTC and record it.
  2. Adjust the seat to the highest position possible.
  3. Disconnect the battery negative cable and wait at least 3 minutes before continuing.
  4. Remove the affected seat and seat cushion cover/pad. Refer to the service information for the model and model year you are working on.

NOTES

  • Do not remove the cushion cover from the foam pad. Remove both parts as an assembly.
  • For reference during assembly, take a photo of the harness routing and clip location layout as shown.
  • Ventilated seat is shown. It may differ slightly from the seat you are repairing.

Remove the affected seat and seat cushion cover/pad

  1. Remove the seat ventilator from the seat bottom (if equipped).

seat ventilator

  1. Remove any harnesses or harness clips that will prevent the removal of the cushion pan.
  2. Remove the four 10 mm bolts from the front cushion pan.

four 10 mm bolts

  1. Lift the cushion pan, and hold it up with a bungee cord or set the seat on its back on a clean surface to keep the cushion pan out of the way.
  2. Disconnect the VTA unit connector.

VTA unit connector

  1. Remove the VTA unit nuts.

VTA unit nuts

  1. Remove the metal screw clip on top of the VTA unit with a clip removal tool.

NOTE

Make sure you do not damage or lose the metal screw clip.

metal screw clip

  1. Remove the VTA unit.

NOTE

If it is difficult to remove the VTA unit after removing the nuts, hit the center shaft of the VTA unit with a punch tool and hammer to remove it.

hit the center shaft of the VTA unit with a punch

  1. Raise the seat as much as possible by grabbing the seat frame as shown. This allows easier meshing of the gear teeth when installing the new VTA motor.
CAUTION
Place a hammer handle (or similar tool) between the upper and lower sections of the seat frame to prevent the rear of the frame from collapsing and pinching fingers. Remove the blocking hammer ONLY when you have installed and aligned the new VTA motor.

Raise the seat as much as possible

  1. Wipe off any excess grease from the seat frame gear teeth with a paper towel or clean rag.

Wipe off any excess grease

  1. Apply the grease provided in the kit to the new VTA unit splines.

NOTE

Only 1/8th of the grease packet is needed. Do not use the whole packet.

Apply the grease provided

  1. Mount the new VTA unit to the seat frame.

Mount the new VTA unit

  1. While applying pressure to keep the VTA unit against the seat frame, use a rubber mallet or plastic hammer to hit the frame downwards. This will allow the VTA unit splines to align and engage with the frame gear.

While applying pressure to keep the VTA unit against the seat frame, use a rubber mallet or plastic hammer to hit the frame downwards

  1. Make sure the VTA unit splines and seat frame gear are properly engaged. The VTA unit center shaft should be protruding from the frame.

NOTES

  • You may need to adjust or remove the blocking hammer handle if it is preventing proper gear engagement.
  • Use caution as the seat will NOT be fully supported and may collapse or pinch fingers until the new VTA unit is secured to the seat frame.

VTA unit center shaft should be protruding from the frame

  1. Place the meshing tool as shown. Center the tool on the pinion shaft protruding from the VTA unit.

NOTICE

  • DO NOT over-tighten the C-clamp.
  • DO NOT attempt to install the VTA unit without using the meshing tool. Seating the VTA unit by tightening the nuts will damage the VTA unit.

Place the meshing tool as shown

  1. Gradually tighten the C-clamp until the VTA unit shaft is protruding from the frame. Once the VTA unit shaft is protruding, go to the next step.

NOTICE

  • DO NOT over-tighten the C-clamp.
  • DO NOT attempt to install the VTA unit without using the meshing tool. Seating the VTA unit by tightening the nuts will damage the VTA unit.

Gradually tighten the C-clamp

  1. With the C-clamp still in place, install the new VTA unit nuts and snug them with a wrench.

With the C-clamp still in place, install the new VTA unit nuts and snug them

  1. Remove the C-clamp, and torque the nuts to 25 N•m (18 lb-ft).

Remove the C-clamp, and torque the nuts

  1. Install the metal screw clip.

Install the metal screw clip

  1. Make sure the VTA unit is supporting the seat’s weight, then remove the blocking hammer or tool.
  2. Connect the VTA unit connector.
  3. Lower the seat cushion pan, and install the bolts. Torque the bolts to 7 N•m (5 lb-ft).

Lower the seat cushion pan, and install the bolts

  1. Route and install the harnesses and the harness clips.

NOTE

Make sure the routing is correct by looking at the photo you took before disassembly.

  1. Install all other removed parts in the reverse order of removal, and install the seat.
  2. Reconnect the battery.
  3. If you are repairing a memory seat, clear the driving position memory as outlined in the service information.
  4. Make sure the height and tilt functions on the seat work properly and the noise is gone.
  5. Turn the ignition switch to the ON position and check if the SRS indicator comes on for about 6 seconds, then turns off.
    • If the indicator comes on, then turns off after about 6 seconds, the procedure is complete.
    • If the SRS indicator did not perform correctly at the beginning of the procedure, check to see if the same problem exists. If there are additional problems, make sure all of the reassembly steps were completed.

END


A18-034
April 16, 2018
Version 1

https://www.nhtsa.gov/recalls?nhtsaId=10135066

https://static.nhtsa.gov/odi/tsbs/2018/MC-10135066-9999.pdf

Download (PDF, 1.1MB)


 

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