Installation [10/2015 - 11/2017]: Procedure

WARNING: This page is about a different car, the 2017 Lexus RC 350, 2017 Lexus RC 300, 2016 Lexus RC 350, 2016 Lexus RC 300, and 2015 Lexus RC 350. However, it is still accessible from the selected car via links, so may be relevant.

INSTALL NO. 2 ECM BRACKET
1. Install the No. 2 ECM bracket to the ECM with the 2 screws.
  Torque: 4.5 N.m (46 kgf/cm, 40 in.lbf)
INSTALL NO. 1 ECM BRACKET
1. Install the No. 1 ECM bracket to the ECM with the 2 screws.
  Torque: 4.5 N.m (46 kgf/cm, 40 in.lbf)
INSTALL ECM
1. Install the ECM to the engine room ECU box with the 2 nuts.
  Torque: 5.5 N.m (56 kgf/cm, 49 in.lbf)
  NOTE:
  - Install the ECM to the engine room ECU box with the name plate facing the outside of the vehicle.
  - If the ECM has been struck or dropped, replace it.

ENGAGE WIRE HARNESS

Engage the wire harness to the engine room ECU box.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Engage the wire harness clamp.
for AA81E:
1. Connect the transmission control ECU assembly connector.
Engage the wire harness to the engine room ECU box and connect the 6 ECM connectors.
NOTE:
- When connecting the connectors, make sure that dirt, water or other foreign matter does not become stuck between the connectors and other part.
- Be sure to securely connect the ECM connectors.
Engage the guide and connect the connector holder to the engine room ECU box.
Engage the claw.

Connect the 2 engine wire harness connectors (B).

Connect the engine wire harness connector (A) as shown in the illustration.

INSTALL ENGINE ROOM ECU COVER
1. Install the engine room ECU cover with the 3 bolts.
  Torque: 5.5 N.m (56 kgf/cm, 49 in.lbf)
  
  NOTE:
  Make sure that the wire harness does not get caught between the parts.
CONNECT CABLE TO NEGATIVE BATTERY TERMINAL
NOTE:
When disconnecting the cable, some systems need to be initialized after the cable is reconnected.

Refer to INITIALIZATION [10/2015 - 11/2017]
PERFORM INITIALIZATION
Refer to INITIALIZATION [10/2015 - 11/2017]