REMOVAL
CAUTION / NOTICE / HINT
The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during ECM removal/installation are shown below.
Necessary Procedure After Parts Removed/Installed/Replaced Replaced Part or Performed Procedure | Necessary Procedure | Effect/Inoperative Function when Necessary Procedure not Performed | Link |
---|---|---|---|
Battery terminal is disconnected/reconnected | Memorize steering angle neutral point | Lane Control System |
|
Pre-collision System | |||
Intelligent Clearance Sonar System*1 | |||
Parking Assist Monitor System |
| ||
Panoramic View Monitor System |
| ||
Lighting System (w/ Automatic Headlight Beam Level Control System) |
| ||
Initialize back door lock | Power Door Lock Control System |
| |
Reset back door close position | Power Back Door System (w/ Outside Door Control Switch) |
| |
Replacement of ECM | Vehicle Identification Number (VIN) registration | MIL comes on |
|
ECU communication ID registration (Immobiliser system) | Engine start function |
| |
Perform the following procedures in the order shown (If possible, read the transaxle compensation code from the previous ECM):
|
| for U881E Initialization U881E Registration U881F Initialization U881F Registration | |
Perform the following procedures in the order shown (If impossible, read the transaxle compensation code from the previous ECM):
| |||
Perform code registration (Immobiliser system) |
|
|
*1: When performing learning using the Techstream.
Click here
PROCEDURE
1. PRECAUTION
NOTICE:
Click here
Click here
Click here
2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
NOTICE:
When disconnecting the cable, some systems need to be initialized after the cable is reconnected.
Click here
3. REMOVE COOL AIR INTAKE DUCT SEAL
Click here
4. REMOVE ECM
(a) Raise the 2 levers while pushing the locks on the levers, and disconnect the 2 ECM connectors. NOTICE: After disconnecting the ECM connectors, make sure that dirt, water or other foreign matter does not contact the connecting parts of the ECM connectors. |
|
(b) Disengage the wire harness clamp.
(c) Remove the 2 bolts and nut to remove the ECM.
NOTICE:
If the ECM has been struck or dropped, replace it.
Bolt | |
Nut |
5. REMOVE NO. 1 ECM BRACKET
(a) Remove the 2 bolts and No. 1 ECM bracket from the ECM. | |
6. REMOVE NO. 2 ECM BRACKET
(a) Remove the 2 bolts and No. 2 ECM bracket from the ECM. | |
Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Automatic Transaxle System: System Voltage Circuit Short to Ground or Open (P056014)
DESCRIPTION The battery supplies electricity to the ECM even when the engine switch is off. This power allows the ECM to store data such as DTC history and freeze frame data. If the battery voltage falls below a minimum level, the stored ECM data will be cleared and the ECM will determine that there ...
Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Vehicle Stability Control System: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE If there are no DTCs output and the problem still occurs, check the suspected areas for each problem symptom in the order given in the following table and proceed to the relevant troubleshooting page. NOTICE: When replacing the skid control ECU (brake actuator assembly), senso ...