A20-056

Service Bulletin
March 1, 2022
20-056
Version 2
MIL Comes On with DTC P2422
Supersedes 20-056, dated August 5,2020, to revise the information highlighted in yellow.
AFFECTED VEHICLES
Year
Model
Trim Level
VIN Range
2016–20
Pilot
ALL
ALL
REVISION SUMMARY
•
•
•
Under AFFECTED VEHICLES, the year was updated.
Under PARTS INFORMATION – REPAIR PROCEDURE A and B, the part number for the Canister Set (2020) was added.
Under WARRANTY CLAIM INFORMATION, the failed part number was updated.
SYMPTOM
The MIL comes on with DTC P2422 (EVAP canister vent shut valve stuck closed malfunction).
PROBABLE CAUSE
Dirt may be clogging the EVAP canister vent tube.
CORRECTIVE ACTION
Inspect the canister vent tube. If necessary, replace the canister assembly and install a canister drain kit. This includes a
canister filter box.
PARTS INFORMATION – REPAIR PROCEDURE A
Part Name
Part Number
Quantity
Canister Drain Kit
06171-TG7-305
1
Canister Set (2016–2019)
17011-TZ5-A01
1
Canister Set (2020)
17011-TG7-A11
1
Retainer
17711-SNA-A01
1
CUSTOMER INFORMATION: The information in this bulletin is intended for use only by skilled technicians who have the proper tools, equipment,
and training to correctly and safely maintain your vehicle. These procedures should not be attempted by “do-it-yourselfers,” and you should not
assume this bulletin applies to your vehicle, or that your vehicle has the condition described. To determine whether this information applies, contact
an authorized Honda automobile dealer.
© 2021 American Honda Motor Co., Inc. – All Rights Reserved
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PARTS INFORMATION – REPAIR PROCEDURE B
Part Name
Part Number
Quantity
Canister Drain Kit
06171-TG7-305
1
Canister Set (2016–2019)
17011-TZ5-A01
1
Canister Set (2020)
17011-TG7-A11
1
Retainer
17711-SNA-A01
1
Pre Chamber Gasket (Exhaust)
18393-SDB-A00
1
Self-Lock Nut
90212-SA5-003
3
Rear Differential Bracket Flange Bolt (10 x 25 mm)
90167-SAA-010
4
Rear Differential Mount Flange Bolt (14 x 85 mm)
90160-TZ6-A00
2
Propeller Shaft 12-point Bolt (8 x 21 mm)
90113-S10-000
4
NOTE: A canister filter box is included in the canister drain kit. Order a replacement canister filter box only when you need
to replace it.
PARTS INFORMATION – REPAIR PROCEDURE C
Part Name
Part Number
Quantity
Replacement Canister Filter Box
17315-TM8-L01
1
WARRANTY CLAIM INFORMATION
The normal warranty applies.
Operation
Number
Description
Flat Rate
Time
Defect
Code
Symptom
Code
Template
ID
Failed Part Number
1201Q6
Repair Procedure A 2WD vehicles only.
Inspect and replace
the canister assembly,
and install a canister
drain kit (includes
canister filter box).
Repair Procedure B AWD vehicles only.
Inspect and replace
the canister assembly,
and install a canister
drain kit (includes
canister filter box).
Repair Procedure C Inspect and replace
the canister filter box.
1.0 hr
03214
03217
A20056A
17011-TG7-A11
1.6 hr
03214
03217
A20056B
17011-TG7-A11
0.3 hr
03214
03217
A20056C
17011-TG7-A11
1201Q7
1205A5
Skill Level: Repair Technician
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INSPECTION
Without Canister Filter Box
Disconnect the drain tube from the EVAP canister.
Check if there is any dust or dirt in the tube by visually inspecting and tapping/shaking it.
•
•
•
2WD models: If the drain tube has any dust or dirt inside it, go to REPAIR PROCEDURE A.
AWD models: If the drain tube has any dust or dirt inside it, go to REPAIR PROCEDURE B.
If there is no dust or dirt inside the drain tube, this bulletin does not apply. Continue with normal system
troubleshooting.
With Canister Filter Box
Disconnect drain tube C from the canister filter box.
Check if there is any dust or dirt in the tube by visually inspecting and tapping/shaking it.
•
•
All models: If there is dust or dirt inside the drain tube, go to REPAIR PROCEDURE C.
If there is no dust or dirt inside the drain tube, this bulletin does not apply. Continue with normal system
troubleshooting.
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REPAIR PROCEDURE A
Using the appropriate tools in the vehicle, lower the spare tire all the way to the ground, and remove it from the hoist
cable.
NOTE: Do not use power tools.
Disconnect the quick-connect fitting, hoses, and connectors from the EVAP canister.
Remove and reuse the EVAP canister bolt on the driver's side, then slide the canister toward the driver's side to
remove it from the vehicle.
Remove the crossmember center brace and flange bolts. Do not reuse them. Replacement parts and hardware are
included in the canister drain kit.
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Remove the rear left subframe stay and flange bolts. Do not reuse them. Replacement parts and hardware are
included in the canister drain kit.
Remove the drain tube and drain tube joint connected to the frame rail. Do not reuse the drain tube or drain tube joint.
Disconnect the rear subframe harness from the crossmember.
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Clean the surrounding area with isopropyl alcohol and cover the hole with the 30 mm door hole seal (P/N 91619-SE0000) included in the canister drain kit.
Cut the yellow harness band off the rear subframe harness. Make sure you do not damage the harness.
Page 6 of 31
Loosely install the new crossmember center brace (P/N 75647-TZ5-A01) and canister filter bracket A (P/N 17316-TG7A30) as shown. Make sure canister filter bracket A is between the 8 x 22 mm bolt (P/N 90162-S09-000) and the
crossmember center brace. Use the 8 x 23.5 mm bolts (P/N 90101-SE3-003) and paint cutting M6 nuts (P/N 90361TZ5-A00) included in the canister drain kit.
NOTE:
• Tighten the hardware by hand. You will torque them to specification in a later step.
• Make sure canister filter bracket A is routed above the hoses.
• Attach canister bracket A as shown.
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Loosely install the new rear left subframe stay (P/N 50378-TG7-A02). Make sure canister filter bracket A is between
the flange bolt (P/N 90161-SHK-A00) and rear left subframe stay as shown.
Install a new harness band (P/N 91507-SNA-003) included in the canister drain kit, and attach it to the rear left
subframe stay as shown.
Install a new grommet (P/N 91603-TG7-A02) included in the canister drain kit as shown.
Tighten the new flange bolts to the specified torque:
•
•
Torque the 14 x 144 mm bolt (P/N 90161-S3N-000) to 132 N•m (97 lb-ft).
Torque the 12 x 30 mm bolts (P/N 90161-SHJ-A00) to 64 N•m (47 lb-ft).
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Torque the crossmember center brace bolts to 19-25 N•m (14-18.4 lb-ft), and torque the nuts to 6.9-12 N•m (5.1-8.9
lb-ft).
Unclip the rear subframe subharness, and install the spring nut (P/N 74103-TZ5-A01) included in the canister drain kit.
Cut the subharness band clip off the harness. Make sure you do not damage the harness.
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Loosely install the new subharness band clip on the subharness as shown.
Loosely install canister filter bracket B (P/N 17317-TG7-A30) using the 6 mm bolt (P/N 93405-0602004) included in the
kit, and attach the subharness band clip as shown.
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Torque the 6 mm bolt to 9.4 N•m (6.9 lb-ft). Tighten the subharness band clip and cut off the excess band.
Transfer the original EVAP canister vent shut valve and vent pressure sensor to the new EVAP canister.
NOTE: Do not reuse the original O-rings and quick-connect retainer.
Install the new EVAP canister. Torque the bolt to 9.4 N•m (6.9 lb-ft).
Connect the quick-connect fitting, hoses, and connectors to the EVAP canister.
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Attach the drain tube joint (P/N 17742-SWA-A01) to drain tube C (P/N 17745-TG7-A30) included in the canister drain
kit as shown.
Make sure the paint dot on drain tube C is lined up with the tab on the drain tube joint as shown.
Connect the drain tube and drain tube joint assembly to its original location in the frame rail.
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Connect drain tube A (P/N 17743-TG7-A30) to the EVAP canister. Make sure the paint dot on the drain tube is lined up
with the tab on the evap canister.
Install the new canister filter box to canister bracket A. Use two 6 mm flange nuts (P/N 94050-06040) included in the
canister kit, and torque them to 9.4 N•m (6.9 lb-ft).
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Connect drain tube A to the port labeled CANISTER on the canister filter box. Connect drain tube C to the port labeled
AIR on the canister filter box.
Make sure the paint dot is lined up with the tab on the canister filter box.
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Attach drain tube clips (P/N 91595-SCV-A01) included in the canister filter kit to canister bracket B as shown. Then,
attach drain tubes A and C to the drain tube clips.
Attach drain tube C to drain tube A with the new drain tube clip as shown.
NOTE:
•
•
The clip should line up with the painted line on drain tube A.
The paint dot on drain tube C should be visible and centered inside the clip.
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Lower the vehicle to the ground.
Before raising the spare tire back into the vehicle, make sure the spare tire hoist bracket is centered in the hub opening
of the wheel.
Raise the spare tire. If the bracket is correctly positioned, the spare tire will be close to level as it is raised. If the
bracket is not correctly positioned, the spare tire will not be level as it is raised and will not seat flush under the vehicle.
Using the appropriate tools in the vehicle, tighten the spare tire hoist until it clicks. Failure to do this can result in noise
and/or damage to the hoist cable.
NOTE: Do not use power tools.
Return the tools to their correct storage areas in the vehicle.
Connect the i-HDS to the vehicle. Clear any associated DTCs, then do the EVAP function test.
•
•
If the EVAP function test passes, the repair is complete.
If the EVAP function test fails, continue with normal system troubleshooting.
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REPAIR PROCEDURE B
Using the appropriate tools in the vehicle, lower the spare tire all the way to the ground, and remove it from the hoist
cable.
NOTE: Do not use power tools.
Remove the exhaust pipe and muffler. Refer to the service information.
NOTE: Do not reuse the exhaust nuts or gasket.
Disconnect the propeller shaft from the rear differential.
NOTE:
•
•
Do not reuse the propeller shaft bolts.
Do not allow the propeller shaft to hang from the center support bearing alone. Hang the propeller shaft from the
rear subframe using a bungee cord or something similar.
Support the rear differential with a transmission jack, and remove the four rear differential front mounting bracket flange
bolts and the two rear differential rear mount flange bolts.
NOTE: Do not reuse the differential mounting flangebolts.
Lower the rear differential about 3 in (76.2 mm).
NOTE: Make sure you do not stretch the rear differential wiring harness.
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Disconnect the quick-connect fitting, hoses, and connectors from the EVAP canister.
Remove and reuse the EVAP canister bolt on the driver's side, then slide the canister toward the driver's side to
remove it from the vehicle.
Remove the crossmember center brace and flange bolts. Do not reuse them. Replacement parts and hardware are
included in the canister drain kit.
Page 18 of 31
Remove the rear left subframe stay and flange bolts. Do not reuse them. Replacement parts and hardware are
included in the canister drain kit.
Remove the drain tube and drain tube joint connected to the frame rail. Do not reuse the drain tube or drain tube joint.
Disconnect the rear subframe harness from the crossmember.
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Clean the surrounding area with isopropyl alcohol and cover the hole with the 30 mm door hole seal (P/N 91619-SE0000) included in the canister drain kit.
Cut the yellow harness band off the rear subframe harness. Make sure you do not damage the harness.
Loosely install the new crossmember center brace (P/N 75647-TZ5-A01) and canister filter bracket A (P/N 17316-TG7A30) as shown. Make sure canister filter bracket A is between the 8 x 22 mm bolt (P/N 90162-S09-000) and the
crossmember center brace. Use the 8 x 23.5 mm bolts (P/N 90101-SE3-003) and paint cutting M6 nuts (P/N 90361TZ5-A00) included in the canister drain kit.
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NOTE:
• Tighten the hardware by hand. You will torque them to specification in a later step.
• Make sure canister filter bracket A is routed above the hoses.
• Attach canister bracket A as shown.
Loosely install the new rear left subframe stay (P/N 50378-TG7-A02). Make sure canister filter bracket A is between
the flange bolt (P/N 90161-SHK-A00) and rear left subframe stay as shown.
Install a new harness band (P/N 91507-SNA-003) included in the canister drain kit, and attach it to the rear left
subframe stay as shown.
Install a new grommet (P/N 91603-TG7-A02) included in the canister drain kit as shown.
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Tighten the new flange bolts to the specified torque:
•
•
Torque the 14 x 144 mm bolt (P/N 90161-S3N-000) to 132 N•m (97 lb-ft).
Torque the 12 x 30 mm bolts (P/N 90161-SHJ-A00) to 64 N•m (47 lb-ft).
Torque the crossmember center brace bolts to 19-25 N•m (14-18.4 lb-ft), and torque the nuts to 6.9-12 N•m (5.1-8.9
lb-ft).
Page 22 of 31
Unclip the rear subframe subharness, and install the spring nut (P/N 74103-TZ5-A01) included in the canister drain kit.
Cut the subharness band clip off the harness. Make sure you do not damage the harness.
Loosely install the new subharness band clip on the subharness as shown.
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Loosely install canister filter bracket B (P/N 17317-TG7-A30) using the 6 mm bolt (P/N 93405-0602004) included in the
kit, and attach the subharness band clip as shown.
Torque the 6 mm bolt to 9.4 N•m (6.9 lb-ft). Tighten the subharness band clip and cut off the excess band.
Page 24 of 31
Transfer the original EVAP canister vent shut valve and vent pressure sensor to the new EVAP canister.
NOTE: Do not reuse the original O-rings and quick-connect retainer.
Install the new EVAP canister. Torque the bolt to 9.4 N•m (6.9 lb-ft).
Connect the quick-connect fitting, hoses, and connectors to the EVAP canister.
Attach the drain tube joint (P/N 17742-SWA-A01) to drain tube C (P/N 17745-TG7-A30) included in the canister drain
kit as shown.
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Make sure the paint dot on drain tube C is lined up with the tab on the drain tube joint as shown.
Connect the drain tube and drain tube joint assembly to its original location in the frame rail.
Connect drain tube A (P/N 17743-TG7-A30) to the EVAP canister. Make sure the paint dot on the drain tube is lined up
with the tab on the evap canister.
Install the new canister filter box to canister bracket A. Use two 6 mm flange nuts (P/N 94050-06040) included in the
canister kit, and torque them to 9.4 N•m (6.9 lb-ft).
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Connect drain tube A to the port labeled CANISTER on the canister filter box. Connect drain tube C to the port labeled
AIR on the canister filter box.
Make sure the paint dot is lined up with the tab on the canister filter box.
Attach drain tube clips (P/N 91595-SCV-A01) included in the canister filter kit to canister bracket B as shown. Then,
attach drain tubes A and C to the drain tube clips.
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Attach drain tube C to drain tube A with the new drain tube clip as shown.
NOTE:
•
•
The clip should line up with the painted line on drain tube A.
The paint dot on drain tube C should be visible and centered inside the clip.
Install the rear differential in the reverse order of removal. Torque the new front bracket flange bolts to 49 N•m (36 lbft). Torque the new rear mount flange bolts to 69 N•m (51 lb-ft).
Page 28 of 31
Connect the propeller shaft to the rear differential. Torque the new propeller shaft bolts to 32 N•m (24 lb-ft).
NOTE:
•
•
Remove the bungee cord securing the propeller shaft before connecting it to the rear differential.
Make sure you line up the factory reference yellow marks on the propeller shaft and the rear differential input
flange.
Install the exhaust pipe and muffler. Refer to the service information.
NOTE: Do not reuse the exhaust gasket and flange nuts.
Lower the vehicle to the ground.
Before raising the spare tire back into the vehicle, make sure the spare tire hoist bracket is centered in the hub opening
of the wheel.
Raise the spare tire. If the bracket is correctly positioned, the spare tire will be close to level as it is raised. If the
bracket is not correctly positioned, the spare tire will not be level as it is raised and will not seat flush under the vehicle.
Using the appropriate tools in the vehicle, tighten the spare tire hoist until it clicks. Failure to do this can result in noise
and/or damage to the hoist cable.
NOTE: Do not use power tools.
Return the tools to their correct storage areas in the vehicle.
Connect the i-HDS to the vehicle. Clear any associated DTCs, then do the EVAP function test.
•
•
If the EVAP function test passes, the repair is complete.
If the EVAP function test fails, continue with normal system troubleshooting.
Page 29 of 31
REPAIR PROCEDURE C
NOTE:
• Do this procedure only if the canister filter box has already been installed and needs to be replaced because of
dust or dirt contamination.
• If the dots are no longer visible on the tubes, mark them with a paint dot to make sure they are installed correctly
on the new canister filter box.
Disconnect drain tube A from the canister filter box.
Remove and replace the canister filter box (P/N 17315-TM8-L01). Reuse the two flange nuts, and torque them to 9.4
N•m (6.9 lb-ft).
Page 30 of 31
Connect drain tube A to the port labeled CANISTER on the canister filter box. Connect drain tube C to the port labeled
AIR on the canister filter box.
Make sure the paint dot is lined up with the tab on the canister filter box.
Connect the i-HDS to the vehicle. Clear any associated DTCs, then do the EVAP function test.
•
•
If the EVAP function test passes, the repair is complete.
If the EVAP function test fails, continue with normal system troubleshooting.
END
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