Dtc B2285 Steering Lock Position Signal Circuit Malfunction

Engine. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
2Az-Fe Starting. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING INTELLIGENT TESTER (STEERING LOCK CONDITION)

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

CHECK WHETHER ENGINE STARTS

DTC B2285 Steering Lock Position Signal Circuit Malfunction

DTC B2288 Steering Lock Signal Circuit Malfunction


DESCRIPTION

The main body ECU and steering lock ECU are connected by a cable and a LIN communication line. These DTCs are stored 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 steering lock ECU.
The steering lock ECU unlocks the steering wheel only when it receives an unlock signal from LIN communication and the cable.

DTC Code
DTC Detection Condition
Trouble Area
B2285
Cable and LIN signals between the main body ECU and steering lock ECU are inconsistent.
  1. Main body ECU
  2. Steering lock system
  3. Harness or connector
B2288
After turning the engine switch from off to on (IG), the steering wheel does not unlock for a certain period of time.
  1. Main body ECU
  2. Steering lock system
  3. Harness or connector

WIRING DIAGRAM


Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.2Az-Fe Starting.Starting System (W/ Entry And Start System). Dtc B2285 Steering Lock Position Signal Circuit Malfunction


INSPECTION PROCEDURE

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

  1. Connect the intelligent tester to the DLC3.

  1. Turn the engine switch on (IG) and turn the intelligent tester on.

  1. Enter the following menus: Body / Main Body / Data List.

  1. Read the display on the intelligent tester.

    Main Body
    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:
    When the steering wheel is unlocked, ON appears on the intelligent tester screen.


NG
Go to step 2
OK

REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)

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


    Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.2Az-Fe Starting.Starting System (W/ Entry And Start System). Dtc B2285 Steering Lock Position Signal Circuit Malfunction

  1. Disconnect the E18 main body ECU connector.

  1. Disconnect the E6 steering lock ECU connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E18-18 (SLP) - E6-4 (SLP1)
    		Always
    		Below 1 Ω
    E18-18 (SLP) or E6-4 (SLP1) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.CHECK WHETHER ENGINE STARTS

  1. Temporarily replace the main body ECU (instrument panel junction block) with a new or normally functioning one.

  1. Check that the engine starts normally.

    OK:
    Engine starts normally.


NG
GO TO STEERING LOCK SYSTEM (RAV4_ACA30 RM000001T1300JX.html)
OK

END (MAIN BODY ECU IS DEFECTIVE)