Dtc B2288 Steering Lock Signal Circuit Malfunction

Vehicle Interior. Corolla. Zre142 Aze141
Theft Deterrent Keyless Entry. Corolla. Zre142 Aze141

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FOR DTC

CHECK STEERING LOCK

READ VALUE USING TECHSTREAM

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 cable from 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 (COROLLA_ZRE142 RM000000QYF05AX.html).

DTC No.
DTC Detection Condition
Trouble Area
B2288
After turning engine switch from off to on (IG), the steering wheel does not unlock for a certain period of time (ECU unlocks steering wheel only when it receives an unlock signal from LIN communication and cable)
  1. Main body ECU (instrument panel junction block)
  2. Steering lock ECU
  3. Wire harness or connector

WIRING DIAGRAM


Corolla. Zre142 Aze141.Theft Deterrent Keyless Entry.Smart Key System (For Entry Function). Dtc B2288 Steering Lock Signal Circuit Malfunction


INSPECTION PROCEDURE

1.CHECK FOR DTC

  1. Clear the DTCs (COROLLA_ZRE142 RM000000YEH0CGX.html).

  1. After all DTCs are cleared, check if the trouble occurs again 18 to 22 seconds after the engine switch is turned on (IG).

  1. Check for DTCs again.

    Result:

    Result
    		Proceed to
    DTC B2285 (Steering lock Position Signal Circuit Malfunction) is output
    		A
    Steering lock DTCs B2781, B2782 and / or B2788 are output
    		B
    DTC is not output
    		C
    DTC B2288 is output
    		D


A
GO TO OTHER FLOW CHART (DTC B2285) (COROLLA_ZRE142 RM000000YD30CTX.html)

B
GO TO DIAGNOSTIC TROUBLE CODE CHART (DTC B2781, B2782, B2788) (COROLLA_ZRE142 RM000000XWM05GX.html)

C
USE SIMULATION METHOD TO CHECK (COROLLA_ZRE142 RM000000UZ108OX.html)
D


2.CHECK STEERING LOCK

  1. Check if the steering lock is released when turning the engine switch on (ACC).

    HINT:
    The starting function may not operate after recharging or while jump-starting a discharged battery. This condition is most common if the battery voltage drops below 9 V.
    OK:
    The steering lock is released.


NG
GO TO STEERING LOCK SYSTEM (COROLLA_ZRE142 RM000000XWP060X.html)
OK


3.READ VALUE USING TECHSTREAM

  1. Connect the Techstream to the DLC3.

  1. Check the Data List for proper functioning of the steering lock function.

    HINT:
    When using the Techstream with the engine 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 Techstream and vehicle starts.

    Main Body
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Steering Unlock Switch
    		Steering lock condition / ON or OFF
    		ON: Steering is unlocked (Engine switch on (ACC))
    OFF: Steering is locked (Engine switch off)
    		-


NG
REPLACE STEERING LOCK ECU (COROLLA_ZRE142 RM000000UD005GX_01_0019.html)
OK

REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)