DTC    B2285    Steering Lock Position Signal Circuit Malfunction

DTC    B2288    Steering Lock Signal Circuit Malfunction

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DESCRIPTION

The main body ECU and the steering lock ECU are connected by a cable and the LIN communication line. These DTCs are output when: 1) signals, transmitted through the cable and the communication line, do not match; or 2) a malfunction is detected in the circuit between the main body ECU and the steering lock ECU.

DTC Code
Detection Condition
Trouble Area
B2285
Cable and LIN information between main body ECU and steering lock ECU are inconsistent
  1. Main body ECU
  1. Steering lock ECU
  1. Wire harness or connector
B2288
After turning engine switch from off to on (IG), steering wheel does not unlock for certain period of time (ECU unlocks steering wheel only when it receives unlock signal from LIN communication and cable)
  1. Main body ECU
  1. Steering lock ECU
  1. Wire harness or connector

WIRING DIAGRAM


A137603E03


INSPECTION PROCEDURE

1.READ VALUE OF INTELLIGENT TESTER (STEERING LOCK CONDITION)

  1. Use the Data List to check if the steering lock condition is functioning properly.

    Main body ECU 
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Steering Unlock Switch
    		Steering lock condition / ON or OFF
    		ON: Steering is unlocked
    OFF: Steering is locked
    		-

OK:
ON appears on the screen.



NG
REPLACE MAIN BODY ECU
OK


2.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - STEERING LOCK ECU)

A150030E01

  1. Disconnect the L13 main body ECU connector.

  1. Disconnect the L33 steering lock ECU connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    L13-18 (SLP) - L33-4 (SLP1)
    		Always
    		Below 1 Ω
    L13-18 (SLP) or L33-4 (SLP1) - Body ground
    		Always
    		10 kΩ or higher



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.CHECK MAIN BODY ECU (OPERATION)

  1. Temporarily replace the main body ECU with a new or normally functioning one.

  1. Check that the engine starts normally.

    OK:
    Engine starts normally.



NG
GO TO STEERING LOCK SYSTEM (Нажмите здесь)
OK

END (MAIN BODY ECU IS FAULTY)