B2288

THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): B2288; Steering Lock Signal Circuit Malfunction; 2013 MY Corolla [07/2012 -]
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 Engine Immobilizer System (W/ Smart Key System).





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK FOR DTC

(a) Clear the DTCs Smart Key System (For Start Function).

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

(c) Check for DTCs again.

Result:





A -- GO TO OTHER FLOW CHART (DTC B2285) B2285

B -- GO TO DIAGNOSTIC TROUBLE CODE CHART (DTC B2781, B2782, B2788) Steering Lock System

C -- USE SIMULATION METHOD TO CHECK How to Proceed With Troubleshooting
D -- Continue to next step.

2. CHECK STEERING LOCK

(a) 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 Symptom Related Diagnostic Procedures
OK -- Continue to next step.

3. READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) 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





NG -- REPLACE STEERING LOCK ECU Disassembly

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