Toyota 4Runner: Detecting Vehicle Submersion (B2277)
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. |
|
CAUTION / NOTICE / HINT
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|
Result |
Proceed to |
|---|---|
|
There are traces of water |
A |
|
There are no traces of water |
B |
| A | .gif) |
TAKE APPROPRIATE MEASURES AGAINST CAUSE OF WATER DAMAGE AND REPLACE POWER MANAGEMENT CONTROL ECU |
| B | |
REPLACE POWER MANAGEMENT CONTROL ECU |
Dtc Check / Clear
DTC CHECK / CLEAR
1. CHECK DTC
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / (desired sy ...
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
HINT:
If a trouble code is output during the DTC check, inspect the trouble areas listed
for that code. For details of the code, refer to the "See page" bel ...
Other materials about Toyota 4Runner:
Initialization
INITIALIZATION
1. INITIALIZE AUTOMATIC RUNNING BOARD SYSTEM
NOTICE:
When a side auto step controller ECU assembly is replaced, the side auto step
controller ECU assembly must be initialized. Functions such as deploying/stowing
and jam protection do not ...
Disassembly
DISASSEMBLY
PROCEDURE
1. REMOVE FRONT NO. 2 AXLE INBOARD JOINT BOOT CLAMP
(a) Hold the drive shaft lightly in a vise between aluminum plates.
(b) Using pliers, remove the front No. 2 axle inboard joint boot clamp
as shown in the illustration ...
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