Dtc B2277 Detecting Vehicle Submersion


DESCRIPTION

INSPECTION PROCEDURE

CHECK FOR TRACES OF WATER

DTC 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.

DTC Code
DTC Detection Condition
Trouble Area
B2277
A malfunction in the submersion monitor circuit inside the power management control ECU is detected.
  1. Submerged power management control ECU
  2. Power management control ECU

INSPECTION PROCEDURE

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

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

    Result
    Result
    		Proceed to
    There are traces of water
    		A
    There are no traces of water
    		B



B
REPLACE POWER MANAGEMENT CONTROL ECU (LandCruiser RM0000039R5026X.html)
A

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