B2277

THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): B2277: Detecting Vehicle Submersion
B2277 - Detecting Vehicle Submersion

DESCRIPTION

This DTC is stored when a malfunction in the submersion monitor circuit inside the power management control ECU is detected.

HINT
When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) battery terminal, the power source mode is reset to on (IG). When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.





INSPECTION PROCEDURE

NOTICE:
* When using the Techstream with the engine switch off to troubleshoot: Connect the Techstream to the vehicle and turn a courtesy light switch on and off at 1.5 second intervals until communication between the Techstream and vehicle begins.
* Before performing the inspection, check that there are no problems related to the CAN communication system and LIN communication system.
* Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1. CHECK FOR TRACES OF WATER

(a) Check the power management control ECU, peripheral components and wire harnesses for traces of water.

Result





B -- REPLACE POWER MANAGEMENT CONTROL ECU Removal

A -- TAKE APPROPRIATE MEASURES AGAINST CAUSE OF WATER DAMAGE AND REPLACE POWER MANAGEMENT CONTROL ECU