B2277

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.





INSPECTION PROCEDURE

NOTICE:
* When the power management control ECU is replaced with a new one and the cable from the negative (-) auxiliary battery terminal is connected, the power source mode becomes on (IG) mode. When the auxiliary battery is removed and reinstalled, the power source mode that was selected when the auxiliary battery was removed is restored.
PROCEDURE

1. CHECK FOR DTC

(a) Clear the DTC Smart Access System With Push-Button Start (for Start Function).

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

(c) After 330 seconds have elapsed, check if the DTC has been set again.

OK:

DTC B2277 is not output

HINT
If there are any signs that water was present, before replacing the power management control ECU, take measures to prevent any further water entry.

NG -- REPLACE POWER MANAGEMENT CONTROL ECU Removal

OK -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting