CAUTION / NOTICE / HINT
Note
Before replacing the main body ECU (multiplex network body ECU), refer to Service Bulletin.
After the main body ECU (multiplex network body ECU) has been replaced, the automatic light control system will not operate until the engine is started.
PROCEDURE
INSTALL MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
Note
Make sure that the connecting surfaces are free of foreign matter.
Do not touch the main body ECU (multiplex network body ECU) connector.
*a | 20° or more |
*b | Housing Sidewall |
Set in this Direction |
Set the main body ECU (multiplex network body ECU) to the position where the guide of the main body ECU (multiplex network body ECU) contacts the housing sidewall of the instrument panel junction block assembly as shown in the illustration.
Tech Tips
Make sure to keep the angle at 20° or more as shown in the illustration.
*a | Housing Sidewall |
Slide in this Direction |
Slide the main body ECU (multiplex network body ECU) along the housing sidewall as shown in the illustration and engage the 2 guides.
*a | Side A |
Install in this Direction |
While keeping the main body ECU (multiplex network body ECU) in contact with side A of the instrument panel junction block assembly (axis of rotation), lower it as shown in the illustration.
*1 | Instrument Panel Junction Block Assembly |
*2 | Main Body ECU (Multiplex Network Body ECU) |
Push Area |
Press the push area until the claw engages to install the main body ECU (multiplex network body ECU).
Note
Make sure to press only the push area.
Confirm the engagement of the main body ECU (multiplex network body ECU) and instrument panel junction block assembly by listening for the click sound of the lock engaging.
Tech Tips
If a click sound cannot be heard, visually check the engagement of the lock. The engagement can also be confirmed if the main body ECU (multiplex network body ECU) and instrument panel junction block assembly are flush.
TEMPORARILY INSTALL WIRING HARNESS CLAMP BRACKET (for LHD)
Install in this Direction |
Engage the claw and install the wiring harness clamp bracket as shown in the illustration.
Temporarily install the bolt.
Tech Tips
Do not fully tighten the bolt.
INSTALL INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY WITH MAIN BODY ECU
for LHD:
Install in this Direction |
Connect the 2 connectors and raise the 2 lock levers to engage the 2 claws and lock the connector as shown in the illustration.
Note
Be sure to connect the connector securely.
Engage the clamp.
Engage the clamp.
Install the instrument panel junction block assembly with main body ECU with the bolt and nut.
Tighten the bolt to install the wiring harness clamp bracket to the instrument panel junction block assembly with main body ECU.
Install in this Direction |
Connect the 2 connectors and raise the 2 lock levers to engage the 2 claws and lock the connector as shown in the illustration.
Note
Be sure to connect the connector securely.
Engage the clamp.
Connect each connector.
for RHD:
Install in this Direction |
Connect the 2 connectors and pull down the 2 lock levers to engage the 2 claws and lock the connector as shown in the illustration.
Note
Be sure to connect the connector securely.
Engage the clamp.
Engage the clamp.
Install the instrument panel junction block assembly with main body ECU with the bolt and nut.
Install in this Direction |
Connect the 2 connectors and raise the 2 lock levers to engage the 2 claws and lock the connector as shown in the illustration.
Note
Be sure to connect the connector securely.
Engage the clamp.
Connect each connector.
INSTALL NO. 3 INSTRUMENT PANEL TO COWL BRACE SUB-ASSEMBLY (for LHD)
INSTALL LOWER NO. 1 INSTRUMENT PANEL AIRBAG ASSEMBLY (for LHD)
INSTALL ECU INTEGRATION BOX LH (for RHD)
INSTALL GLOVE COMPARTMENT DOOR ASSEMBLY (for RHD)
INSTALL NO. 2 INSTRUMENT PANEL UNDER COVER SUB-ASSEMBLY (for RHD)
CONNECT CABLE TO NEGATIVE AUXILIARY BATTERY TERMINAL (for RHD)
Note
When disconnecting the cable, some systems need to be initialized after the cable is reconnected.