Dtc B2286 Runnable Signal Malfunction
Engine. Lexus Gs430, Gs300. Uzs190 Grs190
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
READ VALUE OF INTELLIGENT TESTER (ENGINE CONDITION)
CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - ECM)
CHECK POWER SOURCE CONTROL ECU
DTC B2286 Runnable Signal Malfunction |
DESCRIPTION
The power source control ECU and the ECM are connected by a cable and the BEAN. If the cable information and BEAN information are inconsistent, this DTC will be output.DTC No.
| DTC Detection Condition
| Trouble Area
|
B2286
| Cable and BEAN between power source control ECU and ECM are inconsistent
| - Power source control ECU
- SFI system
- Wire harness
|
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.READ VALUE OF INTELLIGENT TESTER (ENGINE CONDITION) |
Check the Data List for proper functioning of the engine condition.
- Power source control ECU:
Item
| Measurement Item/Display (Range)
| Normal Condition
| Diagnostic Note
|
E/G Cond
| Engine condition/ RUN or STOP
| RUN: Engine running
STOP: Engine stopped
| -
|
- OK:
- RUN (engine running) appears on screen.
STOP (engine stopped) appears on screen.
| OK |
|
|
|
| REPLACE POWER SOURCE CONTROL ECU |
|
| 2.CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - ECM) |
Disconnect the L73 ECU connector.
Disconnect the A7 ECM connector.
Measure the resistance of the wire harness side connectors.
- Standard resistance:
Tester Connection
| Specified Condition
|
L73-2 (TACH) - A7-16 (TACH)
| Below 1 Ω
|
L73-2 (TACH) or A7-16 (TACH) - Body ground
| 10 kΩ or higher
|
| | REPAIR OR REPLACE HARNESS AND CONNECTOR |
|
|
| 3.CHECK POWER SOURCE CONTROL ECU |
Temporarily replace the power source control ECU with a new or normally functioning one.
Check that the engine starts normally.
- OK:
- Engine starts normally.
| OK |
|
|
|
| END (POWER SOURCE CONTROL ECU IS FAULTY) |
|
