- Wireless door lock control system (for HV model, with smart key system)
- Smart key system (for Entry function, HV model)
- Smart key system (for start function, HV model)
- Hybrid control system cannot be started
| Last Modified: 05-08-2025 | 6.11:8.1.0 | Doc ID: RM100000001EFC2 |
| Model Year Start: 2019 | Model: RAV4 | Prod Date Range: [11/2018 - 02/2019] |
| Title: POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL; 2019 MY RAV4 RAV4 HV [11/2018 - 02/2019] | ||
REMOVAL
CAUTION / NOTICE / HINT
The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed, installed, or replaced during the main body ECU (multiplex network body ECU) removal/installation are shown below.
Necessary Procedure After Parts Removed/Installed/Replaced (for HV Model)
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Replaced Part or Performed Procedure |
Necessary procedures |
Effect/Inoperative Function when Necessary Procedure not Performed |
Link |
|---|---|---|---|
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Disconnect cable from negative (-) auxiliary battery terminal |
Perform steering sensor zero point calibration |
Lane control system |
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Pre-collision system |
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Memorize steering angle neutral point |
Parking assist monitor system |
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Panoramic view monitor system (for HV model) |
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Reset back door close position |
Power back door system (for HV model) |
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Back door lock initialization |
Power door lock control system |
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Replacement of main body ECU (multiplex network body ECU) |
Code registration |
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NOTICE:
After the ignition switch is turned off, the radio and display receiver assembly records various types of memory and settings. As a result, after turning the ignition switch off, be sure to wait for the time specified in the following table before disconnecting the cable from the negative (-) auxiliary battery terminal.
Waiting Time before Disconnecting Cable from Negative (-) Auxiliary Battery Terminal
|
System Name |
See Procedure |
|---|---|
|
Vehicle enrolled in Toyota Entune system or safety connect system |
6 minutes |
|
Vehicle not enrolled in Toyota Entune system and safety connect system |
1 minute |
Necessary Procedure After Parts Removed/Installed/Replaced (for Gasoline Model)
|
Replaced Part or Performed Procedure |
Necessary procedures |
Effect/Inoperative Function when Necessary Procedure not Performed |
Link |
|---|---|---|---|
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*: When performing learning using the Techstream.
Click here
|
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Disconnect cable from negative (-) auxiliary battery terminal |
Drive the vehicle until stop and start control is permitted (approximately 5 to 60 minutes) |
Stop and start system |
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Perform steering sensor zero point calibration |
Lane control System |
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Parking support brake system (for Gasoline model)* |
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Pre-collision System |
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Memorize steering angle neutral point |
Parking assist monitor system |
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Panoramic view monitor system (for Gasoline model) |
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Reset back door close position |
Power back door system (for Gasoline model) |
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Back door lock initialization |
Power door lock control system |
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w/ Smart Key System:
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Code registration |
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NOTICE:
After the ignition switch is turned off, the radio and display receiver assembly records various types of memory and settings. As a result, after turning the ignition switch off, be sure to wait for the time specified in the following table before disconnecting the cable from the negative (-) auxiliary battery terminal.
Waiting Time before Disconnecting Cable from Negative (-) Auxiliary Battery Terminal
|
System Name |
See Procedure |
|---|---|
|
Vehicle enrolled in Toyota Entune system or safety connect system |
6 minutes |
|
Vehicle not enrolled in Toyota Entune system and safety connect system |
1 minute |
PROCEDURE
1. PRECAUTION
CAUTION:
Some of these service operations affect the SRS airbag system. Read the precautionary notices concerning the SRS airbag system before servicing.
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w/ Occupant Classification System:
Click here
![2019 MY RAV4 RAV4 HV [11/2018 - 02/2019]; SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM (w/ Occupant Classification System): PRECAUTION](/t3Portal/stylegraphics/info.gif)
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w/o Occupant Classification System:
Click here
NOTICE:
-
After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.
Click here
- Do not remove the main body ECU (multiplex network body ECU) except when replacing it.
- When removing the main body ECU (multiplex network body ECU), always replace it with a new one.
2. REMOVE DECK BOARD ASSEMBLY (for HV Model)
Click here
3. REMOVE REAR NO. 2 FLOOR BOARD (for HV Model)
Click here
4. REMOVE BATTERY HOLE COVER (for HV Model)
Click here
5. DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL
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for A25A-FKS:
Click here
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for A25A-FXS:
Click here
- Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.
- If the airbag deploys for any reason, it may cause a serious accident.
NOTICE:
When disconnecting the cable, some systems need to be initialized after the cable is reconnected.
Click here
6. REMOVE LOWER NO. 1 INSTRUMENT PANEL AIRBAG ASSEMBLY
Click here
7. REMOVE NO. 3 INSTRUMENT PANEL TO COWL BRACE SUB-ASSEMBLY (for TMC Made)
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(a) Detach the 2 wire harness clamps. |
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(b) Remove the nut, bolt and No. 3 instrument panel to cowl brace sub-assembly.
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Nut |
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Bolt |
8. REMOVE CENTER INSTRUMENT PANEL BRACKET SUB-ASSEMBLY (for TMMC Made)
HINT:
Use the same procedure described as for the No. 3 instrument panel to cowl brace sub-assembly (for TMC Made).
9. REMOVE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY WITH MAIN BODY ECU
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(a) Detach the 2 wire harness clamps. |
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(b) w/ Clearance Warning System:
(1) Disconnect the 5 connectors.
(c) w/o Clearance Warning System:
(1) Disconnect the 4 connectors.
(d) Using a thin-bladed screwdriver with its tip wrapped with protective tape, detach the claw and disconnect the 2 lever connectors.
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*a |
Lever Connector |
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Rotate in this Direction |
|
Protective Tape |
(e) Detach the wire harness clamp.
(f) Disconnect the 2 connectors.
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(g) Disconnect the 5 connectors. |
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(h) Remove the 2 nuts. |
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(i) Detach the claw and disconnect the instrument panel junction block assembly with main body ECU.
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(j) Detach the claw and remove the instrument panel junction block assembly with main body ECU from the connector holder. |
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(k) Using a thin-bladed screwdriver with its tip wrapped with protective tape, detach the claw and disconnect the 2 lever connectors.
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*a |
Lever Connector |
- |
- |
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Rotate in this Direction |
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Protective Tape |
(l) Detach the wire harness clamp and remove the instrument panel junction block assembly with main body ECU.
10. REMOVE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
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(a) Detach the claw and remove the junction block bracket from the instrument panel junction block assembly with main body ECU. |
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(b) Press the lock of the instrument panel junction block assembly and release the lock of the main body ECU (multiplex network body ECU) as shown in the illustration.
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*a |
Instrument Panel Junction Block Assembly |
*b |
Main Body ECU (Multiplex Network Body ECU) |
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Movement Direction |
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Instrument Panel Junction Block Assembly Lock |
(c) While pressing the lock, horizontally insert a thin-bladed screwdriver with its tip wrapped with protective tape between the main body ECU (multiplex network body ECU) and instrument panel junction block assembly.
NOTICE:
Use a screwdriver with a diameter between 5.0 mm (0.197 in.) and 6.3 mm (0.248 in.) and a length of approximately 90 mm (3.54 in.).
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Horizontally Insert a Thin-bladed Screwdriver |
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Protective Tape |
(d) When the thin-bladed screwdriver with its tip wrapped with protective tape is inserted, the internal connector lock is released.
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*a |
Internal Connector |
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Insert a Thin-bladed Screwdriver in this Direction |
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Released in this Direction |
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Protective Tape |
NOTICE:
- Do not twist the screwdriver to raise the main body ECU (multiplex network body ECU).
- Do not excessively insert the screwdriver. Otherwise, the internal connector terminals may become deformed or damaged.
- Replace the instrument panel junction block assembly when the connector terminal, the locking section, or the case is damaged or deformed.
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(e) Hold the rib of the main body ECU (multiplex network body ECU). |
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(f) While rotating the main body ECU (multiplex network body ECU), completely release the lock.
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Rotate in this Direction |
(g) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.
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Remove in this Direction |
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