B2286

2AZ-FXE STARTING: SMART KEY SYSTEM: B2286: Runnable Signal Malfunction

DTC B2286 - Runnable Signal Malfunction

DESCRIPTION

This DTC is output when serial communication signals and CAN communication signals in the circuit between the main body ECU and HV control ECU are inconsistent.
HINT: When the main body ECU is replaced with a new one and the negative (-) battery terminal is connected, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.
After the main body ECU is replaced, perform the registration procedures for the engine immobiliser system Programming and Relearning.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC OUTPUT (CAN COMMUNICATION SYSTEM)
(a) Delete the DTCs Reading and Clearing Diagnostic Trouble Codes.
(b) Check for the CAN communication system DTC U0146.
HINT: If the DTCs for the CAN communication system malfunction are output, inspect those DTCs first How to Proceed With Troubleshooting.

OK:
No DTC is output.
NG -- GO TO CAN COMMUNICATION SYSTEM
OK -- Continue to next step.
2. CHECK WIRE HARNESS (MAIN BODY ECU - ECM)
(a) Disconnect the A61 ECU connector.




(b) Disconnect the E8 ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
3. READ VALUE USING TECHSTREAM
(a) Reconnect the connectors.
(b) Connect Techstream to the DLC3.
(c) Check the DATA LIST for proper functioning of the HV control system on (READY).
HINT: When using Techstream with the power switch off, turn on and off any of the door courtesy light switches repeatedly at 1.5 second intervals or less until communication between the tester and vehicle starts.

Main Body:





OK:
OFF (system is off) and ON (system is on (READY)) appear on the screen.
NG -- REPLACE HYBRID VEHICLE CONTROL ECU
OK -- REPLACE MAIN BODY ECU