Lexus Worldzz: 2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) B CODE Page 2389

INSPECTION PROCEDURE

NOTICE:

* When the power management control ECU is replaced with a new one and the cable from the negative (-) battery terminal is

connected, the power source mode becomes the on (IG) mode. When the battery is removed and reinstalled, the power source

mode that was selected when the battery was removed is restored.

PROCEDURE

1. CHECK FOR DTC

(a) Clear the DTC See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Testing and Inspection/Reading and Clearing

Diagnostic Trouble Codes/Smart Access System With Push-Button Start (for Start Function).

(b) Turn the engine switch on (IG).

OK:

DTC B2277 is not output.

HINT

If there are any signs that water was present, before replacing the power source control ECU, take measures to prevent any

further water entry.

NG -- REPLACE POWER MANAGEMENT CONTROL ECU See: Power and Ground Distribution/Power Distribution

Module/Service and Repair/Removal

OK -- USE SIMULATION METHOD TO CHECK See: Accessories and Optional Equipment/Antitheft and Alarm

Systems/Diagrams/Diagnostic Aids/How To Troubleshoot ECU Controlled Systems/How To Proceed With Troubleshooting

From 08/2009

THEFT DETERRENT / KEYLESS ENTRY: SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Start Function): B2277:

Detecting Vehicle Submersion

B2277 - Detecting Vehicle Submersion

DESCRIPTION

This DTC is stored when the submersion circuit monitor inside the power management control ECU detects a large amount of water.