| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000YQRL |
| Model Year Start: 2017 | Model: Sienna | Prod Date Range: [08/2016 - ] |
| Title: 2GR-FKS (FUEL): FUEL SYSTEM: PRECAUTION; 2017 - 2020 MY Sienna [08/2016 - ] | ||
PRECAUTION
IGNITION SWITCH EXPRESSIONS
HINT:
The type of ignition switch used on this model differs depending on specifications of the vehicle.
The expressions listed in the table below are used in this section.
|
Expression |
Ignition Switch (Position) |
Engine Switch (Condition) |
|---|---|---|
|
Ignition switch off |
LOCK |
Off (Lock) |
|
Ignition switch ACC |
ACC |
On (ACC) |
|
Ignition switch ON |
ON |
On (IG) |
|
Engine Start |
START |
Start |
BEFORE WORKING ON FUEL SYSTEM
(a) Before inspecting and repairing the fuel system, disconnect the cable from the negative (-) battery terminal.
NOTICE:
After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.
Click here
![2017 - 2020 MY Sienna [08/2016 - ]; INTRODUCTION: REPAIR INSTRUCTION: PRECAUTION](/t3Portal/stylegraphics/info.gif)
(b) Do not smoke or work near fire when handling the fuel system.
(c) Keep fuel away from rubber or leather parts.
DISCHARGE FUEL SYSTEM PRESSURE
CAUTION:
- Make sure the engine coolant temperature is 60°C (140°F) or less when performing this procedure.
- Do not disconnect any part of the fuel system until you have discharged the fuel system pressure.
- Pressure will still remain in the fuel lines even after performing the following procedure. When disconnecting a fuel line, cover it with a piece of cloth to prevent fuel from spraying or coming out.
(a) When discharging fuel system pressure by disconnecting the EFI MAIN NO. 2 relay:
(1) Remove the engine room relay block cover.
(2) Remove the EFI MAIN NO. 2 relay.
(3) Disconnect the No. 6 engine wire connector and No. 7 engine wire connector.
(4) Start the engine. After the engine has stopped on its own, turn the ignition switch off.
NOTICE:
Do not increase the engine speed or drive the vehicle while waiting for the engine to stop on its own.
(5) Crank the engine again and make sure that the engine does not start.
HINT:
DTC P008700 (Fuel Rail / System Pressure - Too Low), P017100/P017400 (System Too Lean), P160300 (Engine Stall History), P160400 (Startability Malfunction) or P160500 (Rough Idling) may be stored. Clear the DTCs before proceeding to the next step.
Click here
(6) Remove the fuel tank cap assembly and discharge the pressure from the fuel tank assembly.
(7) Disconnect the cable from the negative (-) battery terminal.
NOTICE:
When disconnecting the cable, some systems need to be initialized after the cable is reconnected.
Click here
(8) Connect the No. 6 engine wire connector and No. 7 engine wire connector.
(9) Install the EFI MAIN NO. 2 relay.
(10) Install the engine room relay block cover.
FUEL LINE
(a) When disconnecting a high-pressure fuel line, a large amount of fuel will spray. Perform the following procedure:
(1) Discharge fuel system pressure.
(2) Remove the charcoal canister protector.
Click here
(3) Disconnect the fuel tank main tube.
Click here
(4) Drain the fuel remaining inside the fuel tank main tube.
(5) Cover the disconnected fuel pipe and fuel tube connector with plastic bags to prevent damage and contamination.
(b) Quick Type A:
Perform the following procedure when disconnecting a fuel tube connector.
NOTICE:
Remove any foreign matter on the fuel tube connector and fuel pipe before performing this work.
(1) Clamp Type:
Disengage the 2 claws and remove the No. 2 fuel pipe clamp.
(2) Remove the No. 1 fuel pipe clamp.
(3) Cover Type:
Pull off the fuel tube connector cover.
|
*1 |
Fuel Tube Connector Cover |
|
Pull off |
(4) Check that there is no foreign matter around the fuel tube connector before disconnecting it. Clean it if necessary.
(5) Pinch the retainer of the fuel tube connector, and then pull the fuel tube connector off of the fuel pipe.
|
*1 |
Retainer |
|
*2 |
O-ring |
|
*3 |
Fuel Tube Connector |
|
*4 |
Fuel Pipe |
|
*a |
Nylon Tube |
|
|
Pinch |
|
Pull off |
NOTICE:
Be sure to disconnect the fuel tube connector by hand.
(6) If the fuel tube connector and fuel pipe are stuck, push and pull the fuel tube connector to release it. Pull the fuel tube connector off of the fuel pipe carefully.
NOTICE:
- Be sure to disconnect the fuel tube connector by hand.
- Do not scratch or allow any foreign matter to get on the parts when disconnecting them as the fuel tube connector has O-rings that seal the pipe (fuel pipe).
- Do not bend, twist, pinch or kink the nylon tube.
(7) Check that there is no foreign matter on the sealing surfaces of the disconnected fuel lines. Clean them if necessary.
(8) Cover the disconnected fuel pipe and fuel tube connector with plastic bags to prevent damage and contamination.
(c) Quick Type A:
Perform the following procedure when connecting a fuel tube connector.
NOTICE:
Check that there is no damage or foreign matter on the connecting parts of the fuel lines.
(1) Align the fuel tube connector with the fuel pipe, and push them together until the fuel tube connector makes a "click" sound. If it is difficult to push the fuel pipe into the fuel tube connector, apply a small amount of clean gasoline to the tip of the fuel pipe and reinsert it.
(2) After connecting the fuel lines, check that the fuel pipe and fuel tube connector are securely connected by pulling on them.
|
|
Pull |
(3) Clamp Type:
Install the No. 2 fuel pipe clamp to the fuel tube connector.
(4) Cover Type:
Push in the fuel tube connector cover.
(5) Inspect for fuel leaks.
Click here
(d) Quick Type B:
Perform the following procedure when disconnecting a fuel tube connector.
NOTICE:
Remove any foreign matter on the fuel tube connector and fuel pipe before performing this work.
(1) Disengage the 2 claws of the retainer. Pull out the retainer and disconnect the fuel tube connector from the fuel pipe.
|
*1 |
Retainer |
|
*2 |
Fuel Pipe |
|
*3 |
Fuel Tube Connector |
|
*4 |
O-ring |
|
*a |
Nylon Tube |
|
*b |
Claw |
|
|
Push |
|
|
Pull out |
|
Pull off |
NOTICE:
Be sure to disconnect the fuel tube connector by hand.
(2) If the fuel tube connector and fuel pipe are stuck, push and pull the fuel tube connector to release it. Pull the fuel tube connector off of the fuel pipe carefully.
NOTICE:
- Be sure to disconnect the fuel tube connector by hand.
- Do not scratch or allow any foreign matter to get on the parts when disconnecting them as the fuel tube connector has O-rings that seal the pipe (fuel pipe).
- Do not bend, twist, pinch or kink the nylon tube.
(3) Check that there is no foreign matter on the sealing surfaces of the disconnected fuel lines. Clean them if necessary.
(4) Cover the disconnected fuel pipe and fuel tube connector with plastic bags to prevent damage and contamination.
(e) Quick Type B:
Perform the following procedure when connecting a fuel tube connector.
NOTICE:
Check that there is no damage or foreign matter on the connecting parts of the fuel lines.
(1) Align the fuel tube connector with the fuel pipe, and push them together until the fuel tube connector makes a "click" sound. If it is difficult to push the fuel pipe into the fuel tube connector, apply a small amount of clean gasoline to the tip of the fuel pipe and reinsert it.
|
*1 |
Retainer |
|
*a |
Claw |
|
|
Push |
|
|
Push in |
(2) Connect the fuel lines and push in the retainer to engage the 2 claws. Check that the fuel pipe and fuel tube connector are securely connected by pulling on them.
(3) Inspect for fuel leaks.
Click here
(f) Quick Type C:
Perform the following procedure when disconnecting a fuel tube connector.
NOTICE:
Remove any foreign matter on the fuel tube connector and fuel pipe before performing this work.
(1) Disengage the 2 claws of the retainer. Pull out the retainer and disconnect the fuel tube connector from the fuel pipe.
|
*1 |
Retainer |
|
*2 |
Fuel Pipe |
|
*3 |
Fuel Tube Connector |
|
*4 |
O-ring |
|
*a |
Claw |
|
|
Push |
|
|
Pull out |
|
|
Pull off |
NOTICE:
Be sure to disconnect the fuel tube connector by hand.
(2) If the fuel tube connector and fuel pipe are stuck, push and pull the fuel tube connector to release it. Pull the fuel tube connector off of the fuel pipe carefully.
NOTICE:
- Be sure to disconnect the fuel tube connector by hand.
- Do not scratch or allow any foreign matter to get on the parts when disconnecting them as the fuel tube connector has an O-ring that seals the pipe (fuel pipe).
(3) Check that there is no foreign matter on the sealing surfaces of the disconnected fuel lines. Clean them if necessary.
(4) Cover the disconnected fuel pipe and fuel tube connector with plastic bags to prevent damage and contamination.
(g) Quick Type C:
Perform the following procedure when connecting a fuel tube connector.
NOTICE:
Check that there is no damage or foreign matter on the connecting parts of the fuel lines.
(1) Align the fuel tube connector with the fuel pipe, and push them together until the fuel tube connector makes a "click" sound. If it is difficult to push the fuel pipe into the fuel tube connector, apply a small amount of clean gasoline to the tip of the fuel pipe and reinsert it.
|
*1 |
Retainer |
|
*a |
Claw |
|
|
Push |
|
|
Push in |
(2) Connect the fuel lines and push in the retainer to engage the 2 claws. Check that the fuel pipe and fuel tube connector are securely connected by pulling on them.
(3) Inspect for fuel leaks.
Click here
(h) Quick Type D:
Observe these precautions when disconnecting the charcoal canister outlet tube connector:
|
*1 |
Fuel Tank Breather Tube Connector |
|
*2 |
Pipe |
|
*3 |
O-ring |
|
*a |
Nylon Tube |
(1) Check for dirt or other foreign matter on the parts to be disconnected and clean them if necessary.
(2) Pinch the retainer and pull out the fuel tank breather tube connector with the fuel tank breather tube connector pushed to the pipe side to disconnect the fuel tank breather tube from the pipe.
|
*1 |
Fuel Tank Breather Tube Connector |
|
*2 |
Pipe |
|
|
Push |
|
|
Pinch |
NOTICE:
Do not use any tools.
(3) If the connector and pipe are stuck, pinch the retainer with your hand, and then push and pull the connector to disconnect them.
NOTICE:
Do not use any tools.
(4) Check the sealing surfaces of the disconnected parts, and clean them if necessary.
(5) Protect the contact surface by covering it with a plastic bag.
NOTICE:
Do not damage the pipe or fuel tube connector, and prevent entry of foreign objects.
(i) Observe these precautions when connecting the charcoal canister outlet tube connector:
|
|
Push |
(1) Check that there are no scratches or foreign objects on the connecting part.
(2) Align the fuel tank breather tube connector with the pipe, then push in the fuel tank breather tube connector until the retainer makes a "click" sound to install the fuel tank breather tube to the pipe.
(3) After connecting the pipes, check that the pipe and connector are securely connected by pulling on them.
(4) Inspect for fuel leak.
|
|
Push |
Click here
(j) Observe the following precautions when handling a nylon tube:
NOTICE:
- Do not twist the nylon tube of the fuel tube connector or fuel tube connector when connecting it.
- Do not remove the Ethylene Propylene Diene Monomer (EPDM) rubber protector on the outside of the nylon tube.
- Do not bend, twist, pinch or kink the nylon tube.
|
*1 |
Fuel Tube Connector |
|
*a |
Nylon Tube |
|
*b |
Ethylene Propylene Diene Monomer (EPDM) Rubber Protector |
FUEL SUCTION TUBE WITH PUMP AND GAUGE ASSEMBLY
NOTICE:
-
Do not disconnect the tube shown in the illustration when disassembling the fuel suction tube with pump and gauge assembly. Doing so will cause reassembly of the fuel suction tube with pump and gauge assembly to be impossible as the tube is pressed into the fuel suction plate sub-assembly.
*a
Tube
- When replacing the fuel filter, replace it together with the fuel suction plate sub-assembly.
INSPECT FOR FUEL LEAK
(a) Check that there are no fuel leaks from the fuel system after doing any maintenance or repairs.
Click here
|
|