| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM1000000018CTT |
| Model Year Start: 2018 | Model: Sienna | Prod Date Range: [11/2017 - ] |
| Title: THEFT DETERRENT / KEYLESS ENTRY: CERTIFICATION ECU: REMOVAL; 2018 - 2020 MY Sienna [11/2017 - ] | ||
REMOVAL
PROCEDURE
1. PRECAUTION
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.
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![2017 - 2020 MY Sienna [08/2016 - ]; INTRODUCTION: REPAIR INSTRUCTION: PRECAUTION](/t3Portal/stylegraphics/info.gif)
2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
NOTICE:
When disconnecting the cable, some systems need to be initialized after the cable is reconnected (See page
).
3. REMOVE FRONT DOOR SCUFF PLATE RH
(See page
)
4. REMOVE COWL SIDE TRIM BOARD RH
(See page
)
5. SEPARATE FRONT DOOR OPENING TRIM WEATHERSTRIP RH
6. REMOVE GLOVE COMPARTMENT DOOR SUB-ASSEMBLY
(See page
)
7. REMOVE PARKING ASSIST ECU (w/ Panoramic View Monitor System)
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8. REMOVE MAYDAY ECU ASSEMBLY (w/ Mayday System)
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9. REMOVE ECU INTEGRATION BOX RH
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(a) Disconnect each connector. |
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(b) Disengage the 2 clamps.
HINT:
If the vehicle is equipped with a wire harness clamp, disengage the clamp.
(c) Remove the 2 nuts and bolt and ECU integration box RH with each ECU.
10. REMOVE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
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(a) Using a screwdriver with its tip wrapped in protective tape, disengage the 2 claws to remove the certification ECU (smart key ECU assembly). |
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