Steering Lock Position Signal Circuit Malfunction (B2285)

DESCRIPTION

This DTC is stored when serial communication signals and LIN communication signals in the circuit between the power management control ECU and steering lock actuator assembly (steering lock ECU) are inconsistent.

DTC No.	DTC Detection Condition	Trouble Area
B2285	Cable and LIN information between the power management control ECU and steering lock actuator assembly (steering lock ECU) are inconsistent.	Power management control ECU Steering lock actuator assembly (steering lock ECU) Wire harness or connector

WIRING DIAGRAM
CAUTION / NOTICE / HINT

NOTICE:

• When the power management control ECU is replaced with a new one and the cable from the negative (-) battery terminal is connected, the power source mode becomes the on (IG) mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.
• Inspect the fuses for circuits related to this system before performing the following inspection procedure.

HINT:

Check the connector connection to the terminal to make sure that there is no abnormality such as a loose connection, deformation, etc.

PROCEDURE

1. CHECK LIN COMMUNICATION SYSTEM

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

(d) Clear the DTCs (See page ).

(e) Check if DTC B2287 is output.

OK:

DTC B2287 is not output.

NG

GO TO LIN COMMUNICATION SYSTEM

OK

1. CHECK HARNESS AND CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU)

OK

1. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER MANAGEMENT CONTROL ECU - NO. 1 JUNCTION)

OK

1. INSPECT STEERING LOCK ACTUATOR ASSEMBLY

(a) Reconnect the D43 connector to the power management control ECU.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
D17-4 (SLP1) - Body ground	Steering locked	10 kΩ or higher
D17-4 (SLP1) - Body ground	Steering unlocked	Below 1 Ω

Text in Illustration

*1	Component with harness connected (Steering lock actuator assembly (steering Lock ECU))

NG

REPLACE STEERING LOCK ACTUATOR ASSEMBLY

OK

1. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - STEERING LOCK ECU)

(a) Disconnect the D43 connector from the power management control ECU.

(b) Disconnect the D17 connector from the steering lock actuator assembly (steering lock ECU).

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
D43-3 (SLP) - D17-4 (SLP1)	Always	Below 1 Ω
D43-3 (SLP) - Body ground	Always	10 kΩ or higher

Text in Illustration

*1

Front view of wire harness connector (to Power Management Control ECU)

*2

Front view of wire harness connector (to Steering Lock Actuator Assembly (Steering Lock ECU))

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER MANAGEMENT CONTROL ECU - STEERING LOCK ECU)

OK

1. READ VALUE USING TECHSTREAM

(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 / Power Source Control / Data List.

(e) Read the Data List according to the display on the Techstream.

Power Source Control

Tester Display	Measurement Item/Range	Normal Condition	Specified Condition
Steering Unlock Switch	Steering lock condition/ON or OFF	ON: Steering unlocked OFF Steering locked	-

OK:

ON (steering lock is unlocked) and OFF (steering lock is locked) appear on the screen.

OK

REPLACE STEERING LOCK ACTUATOR ASSEMBLY

NG

REPLACE POWER MANAGEMENT CONTROL ECU