B2288

3MZ-FE STARTING: SMART KEY SYSTEM: B2288: Steering Lock Signal Circuit Malfunction

DTC B2288 - Steering Lock Signal Circuit Malfunction

DESCRIPTION

This DTC is output when the main body ECU (instrument panel junction block) cannot detect the unlock condition of the steering lock within a specified time.
HINT: When the main body ECU (instrument panel junction block) 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 (instrument panel junction block) is replaced, perform the registration procedures for the engine immobiliser system. Engine Immobiliser System





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK FOR DTCS
(a) Delete the DTCs.
(b) After all DTCs are cleared, check if the trouble occurs again 18 to 22 seconds after the power switch is turned on (IG).
(c) Check for DTCs again.
Result:






B -- GO TO DIAGNOSTIC TROUBLE CODE CHART (DTC B2781, B2782, B2788)
A -- GO TO DIAGNOSTIC TROUBLE CODE CHART (DTC B2285)
C -- Continue to next step.
2. CHECK STEERING LOCK
(a) Check if the steering lock is released when turning the power switch on (ACC).
OK:
The steering lock is released.
NG -- GO TO STEERING LOCK SYSTEM
OK -- Continue to next step.
3. READ VALUE USING TECHSTREAM
(a) Connect Techstream to the DLC3.
(b) Check the DATA LIST for proper functioning of the steering lock function.
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





NG -- REPLACE STEERING LOCK ECU
OK -- REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)