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Home >> Lexus >> 2007 >> RX 350 AWD V6-3.5L (2GR-FE) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Engine Control Module >> Service and Repair
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Engine Control Module: Service and Repair

REMOVAL

1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
2. REMOVE GLOVE COMPARTMENT DOOR ASSEMBLY
3. REMOVE ECM

a. Disconnect the 5 ECM connectors.
b. Disconnect the wire harness clamp.
c. Remove the 2 nuts and ECM.
d. Remove the 2 screws and the ECM No. 1 bracket from the ECM.
e. Remove the 2 screws and the ECM No. 2 bracket from the ECM.




f. Remove the 2 screws and the ECM No. 3 bracket from the ECM.

INSTALLATION

1. INSTALL ECM

a. Install the ECM No. 1 bracket to the ECM with the 2 screws.
b. Install the ECM No. 2 bracket to the ECM with the 2 screws.
c. Install the ECM No. 3 bracket to the ECM with the 2 screws.




d. Install the ECM with the 2 nuts.

Torque: 5.5 N.m (56 kgf.cm, 49 in.lbf)

e. Install the wire harness clamp.
f. Connect the 5 ECM connectors.

2. INSTALL GLOVE COMPARTMENT DOOR ASSEMBLY
3. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL
4. INITIALIZE ECM

NOTE: After replacing the ECM on vehicles with a dynamic laser cruise control system, it is necessary to initialize the ECM so that the ECM can recognize the dynamic laser cruise control system.

a. Be sure to perform the following procedures after replacing the ECM.
1. Turn the ignition switch to the ON position.
2. Turn the cruise main switch on.
3. With the brake pedal depressed, push the cruise control main switch to RES/ACC 3 times within 3 seconds. Check that the buzzer sounds at this time.

NOTE: Do not turn the headlight dimmer switch on at this time because the optical axis automatic adjustment mode has already started, which may lead to an incorrect optical axis setting. If the headlight dimmer switch is turned on by mistake, readjust the optical axis.

4. Turn the ignition switch off.
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