Last Modified: 01-30-2024 |
6.11:8.1.0 |
Doc ID: RM100000001L7QB |
Model Year Start: 2020 |
Model: RAV4 |
Prod Date Range: [10/2019 - 12/2021] |
Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): B2285; Steering Lock Position Signal Circuit Malfunction; 2020 - 2021 MY RAV4 [10/2019 - 12/2021] |
DTC
|
B2285
|
Steering Lock Position Signal Circuit Malfunction
|
DESCRIPTION
This DTC is stored when the steering lock position signal sent by the steering lock ECU (steering lock actuator with ECU assembly) via direct line and the steering lock position signal sent via LIN communication do not match.
DTC No.
|
Detection Item
|
DTC Detection Condition
|
Trouble Area
|
Note
|
B2285
|
Steering Lock Position Signal Circuit Malfunction
|
The steering lock position signal sent by the steering lock ECU (steering lock actuator with ECU assembly) via direct line and the steering lock position signal sent via LIN communication do not match. (1-trip detection logic*)
|
-
LIN communication system
-
Steering lock ECU (steering lock actuator with ECU assembly)
-
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 (wait is the steering locked), then turn the engine switch on (IG) (steering unlocked) and wait at least 40 seconds.
|
-
*: Only detected while a malfunction is present.
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
|
Smart Key
-
Power Supply Short
-
Motor Driver Short
-
Lock Bar Stuck Error
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
PROCEDURE
(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
HINT:
-
If the steering cannot be unlocked, the engine switch cannot be turned on (IG) and the engine cannot be started.
-
If LIN communication is not available, the steering cannot be locked or unlocked.
Result
|
Proceed to
|
DTC B2785 is not output
|
A
|
DTC B2785 is output
|
B
|
A
|
|
|
2.
|
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
|
(a) Disconnect the steering lock ECU (steering lock actuator with ECU assembly) connector.
|
|
*a
|
Front view of wire harness connector
(to Steering Lock ECU (Steering Lock Actuator with ECU Assembly))
|
|
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Switch Condition
|
Specified Condition
|
G56-4 (SLP1) - Body ground
|
Engine switch on (IG)
|
11 to 14 V
|
G56-4 (SLP1) - Body ground
|
Engine switch off
|
Below 1 V
|
(c) Connect the steering lock ECU (steering lock actuator with ECU assembly) connector.
OK
|
|
|
3.
|
READ VALUE USING TECHSTREAM (STEERING UNLOCK SWITCH)
|
(a) Enter the following menus: Body Electrical / Power Source Control / Data List.
(b) Read the Data List according to the display on the Techstream.
Body Electrical > Power Source Control > Data List
Tester Display
|
Measurement Item
|
Range
|
Normal Condition
|
Diagnostic Note
|
Steering Unlock Switch
|
State of steering unlock sensor signal output from steering lock ECU (steering lock actuator with ECU assembly)
|
OFF or ON
|
OFF: Steering locked
ON: Steering unlocked
|
-
When the shift state park (P) and the engine switch is off, if any door is opened, the steering is locked.
-
When the electrical key transmitter sub-assembly is in the cabin and the engine switch is turned on (ACC) or on (IG), the steering unlocks.
-
The engine cannot be started when the steering unlock signal is off.
|
Body Electrical > Power Source Control > Data List
Tester Display
|
Steering Unlock Switch
|
OK:
The Techstream display changes correctly in response to the steering lock/unlock status.
Result
|
Proceed to
|
Techstream display does not change
|
A
|
Techstream display changes
|
B
|
A
|
|
|
4.
|
CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR WITH ECU ASSEMBLY)
|
(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Condition
|
Specified Condition
|
G56-4 (SLP1) - Body ground
|
Steering locked → unlocked*
|
11 to 14 V → Below 1.5 V
|
HINT:
-
*: If any of the doors are opened with the shift state park (P) and the engine switch off, the steering will be locked. If the engine switch is turned on (ACC) or on (IG) with the electrical key transmitter sub-assembly in the cabin, the steering will be unlocked.
-
DTC B2285 may be stored due to a malfunction in the steering lock ECU (steering lock actuator with ECU assembly). The steering lock position signal and unlock position signal are sent from the steering lock ECU (steering lock actuator with ECU assembly) to the certification ECU (smart key ECU assembly) individually.
|
|
*a
|
Component with harness connected
(Steering Lock ECU (Steering Lock Actuator with ECU Assembly))
|
|
|
OK
|
|
|
5.
|
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - STEERING LOCK ECU (STEERING LOCK ACTUATOR WITH ECU ASSEMBLY))
|
(a) Disconnect the G56 steering lock ECU (steering lock actuator with ECU assembly) connector.
(b) Disconnect the G54 certification ECU (smart key ECU assembly) connector.
(c) w/ Telematics System:
Disconnect the G131 DCM (telephone transceiver assembly) connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
G54-14 (SLP) - G56-4 (SLP1)
|
Always
|
Below 1 Ω
|
G54-14 (SLP) or G56-4 (SLP1) - Other terminals and body ground
|
Always
|
10 kΩ or higher
|
(e) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Condition
|
Specified Condition
|
G54-14 (SLP) or G56-4 (SLP1) - Body ground
|
Always
|
Below 1 V
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
6.
|
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - STEERING LOCK ECU (STEERING LOCK ACTUATOR WITH ECU ASSEMBLY))
|
(a) Disconnect the G56 steering lock ECU (steering lock actuator with ECU assembly) connector.
(b) Disconnect the G54 certification ECU (smart key ECU assembly) connector.
(c) w/ Telematics System:
Disconnect the G131 DCM (telephone transceiver assembly) connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
G54-14 (SLP) - G56-4 (SLP1)
|
Always
|
Below 1 Ω
|
G54-14 (SLP) or G56-4 (SLP1) - Other terminals and body ground
|
Always
|
10 kΩ or higher
|
(e) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Condition
|
Specified Condition
|
G54-14 (SLP) or G56-4 (SLP1) - Body ground
|
Always
|
Below 1 V
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
|