B2288

2GR-FE STARTING: SMART ACCESS SYSTEM WITH PUSH-BUTTON START: B2288: Steering Lock Signal Circuit Malfunction

DTC B2288 - Steering Lock Signal Circuit Malfunction

DESCRIPTION

This DTC is output when the main body ECU cannot detect the unlock condition of the steering lock within a specified time.
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 immobilizer system Engine Immobilizer System.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK FOR DTCS
(a) Delete the DTCs Reading and Clearing Diagnostic Trouble Codes.
(b) After all DTCs are cleared, check if the trouble occurs again 5 seconds after the engine switch is turned on (IG).
(c) Check for DTCs again.
OK:
DTC B2785 (Communication malfunction between ECUs connected by LIN), DTC B2287 (LIN communication master malfunction) and DTC B2781 (Open/short in steering lock ECU) are not output.
HINT:
- If DTC B2785 is output, B2785.
- If DTC B2287 is output, B2287.
- If DTC B2281 is output, B2781.

NG -- GO TO DTC CHART
OK -- Continue to next step.
2. CHECK WIRE HARNESS (MAIN BODY ECU - STEERING LOCK ECU)
(a) Disconnect the E61 and E78 ECU connectors.




(b) 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. CHECK MAIN BODY ECU OPERATION
(a) After replacing the main body ECU with a normally functioning ECU, check that the engine starts.
OK:
Steering lock/unlock function operates normally.
HINT: If steering lock/unlock function does not operate, refer to PROBLEM SYMPTOMS TABLE of the electrical steering lock (steering wheel cannot be unlocked) Symptom Related Diagnostic Procedures.

NG -- GO TO ELECTRIC STEERING LOCK
OK -- END (MAIN BODY ECU DEFECTIVE)