THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): B2285; Steering Lock Position Signal Circuit Malfunction; 2022 - 2024 MY RAV4 [12/2021 - ]

Last Modified: 01-30-2024	6.11:8.1.0	Doc ID: RM1000000021J17
Model Year Start: 2022	Model: RAV4	Prod Date Range: [12/2021 - ]
Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): B2285; Steering Lock Position Signal Circuit Malfunction; 2022 - 2024 MY RAV4 [12/2021 - ]

DTC

B2285

Steering Lock Position Signal Circuit Malfunction

DESCRIPTION

This DTC is stored when there is no continuity between terminal SLP of the certification ECU (smart key ECU assembly) and ground.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Note
B2285	Steering Lock Position Signal Circuit Malfunction	This DTC is stored when there is no continuity between terminal SLP of the certification ECU (smart key ECU assembly) and ground.	Certification ECU (smart key ECU assembly) Harness or connector	DTC Output Confirmation Operation: Disconnect the cable from the negative (-) battery terminal, wait 30 seconds and then reconnect the cable to the negative (-) battery terminal. Wait at least 40 seconds with the engine switch off, then turn the engine switch on (IG) and wait at least 40 seconds.

Vehicle Condition and Fail-safe Function when Malfunction Detected

Vehicle Condition when Malfunction Detected	Fail-safe Function when Malfunction Detected
The engine cannot be started.	The ECU does not send an engine start request.

Related Data List and Active Test Items

DTC No.	Data List and Active Test
B2285	-

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
The smart key system (for Start Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Start Function) after confirming that the communication systems are functioning properly.
Click here
Before replacing the certification ECU (smart key ECU assembly), refer to the Registration.
Click here
After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

PROCEDURE

1.	CHECK FOR DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Smart Key / Trouble Codes.

(e) Check for DTCs.

Body Electrical > Smart Key > Trouble Codes

Result	Proceed to
DTC B2785 is not output	A
DTC B2785 is output	B

B

GO TO DTC B2785

A

2.	CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - BODY GROUND)

(a) Disconnect the certification ECU (smart key ECU assembly) connector.

*a	Front view of wire harness connector (to Certification ECU (Smart Key ECU Assembly))

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
G54-14 (SLP) - Body ground	Always	Below 1 Ω

OK

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR