Last Modified: 04-05-2023 |
6.11:8.1.0 |
Doc ID: RM100000000VJJQ |
Model Year Start: 2016 |
Model: Sienna |
Prod Date Range: [12/2015 -
] |
Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Start Function): B2285; Steering Lock Position Signal Circuit Malfunction; 2016 - 2020 MY Sienna [12/2015 - ] |
DTC
|
B2285
|
Steering Lock Position Signal Circuit Malfunction
|
DESCRIPTION
This DTC is stored when a mismatch between the steering lock position signal from the direct line sent by the steering lock ECU and the steering lock position signal sent via LIN communication is detected.
HINT:
-
When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) battery terminal, the power source mode changes to on (IG).
-
When the battery cable is disconnected and reconnected, the power source returns to the mode it was in before the battery cable was disconnected.
DTC Code
|
DTC Detection Condition
|
Trouble Area
|
DTC Output Confirmation Operation
|
B2285
|
Mismatch between the steering lock position signal from the direct line sent by the steering lock ECU and the steering lock position signal sent via LIN communication (1-trip detection logic*).
|
-
AM2 No.2 fuse
-
Steering lock actuator assembly (steering lock ECU)
-
Power management control ECU
-
LIN communication system
-
Harness or connector
|
Disconnect the cable from the negative (-) battery terminal, wait 30 seconds and reconnect the cable to the negative (-) battery terminal. Wait another 40 seconds or more with the engine switch off (steering lock locked), and then turn the engine switch on (ACC) (steering lock unlocked) and wait 40 seconds or more.
|
-
*: Only output while a malfunction is present and the engine switch is on (IG)
Vehicle Condition and Fail-safe Function when Malfunction Detected
Vehicle Condition when Malfunction Detected
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Fail-safe Function when Malfunction Detected
|
The engine cannot be started.
|
An engine start command is not output.
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
Related Data List and Active Test Items
DTC
|
Data List Item
|
Active Test Item
|
B2285
|
Smart Key
-
IG2 Status
-
IG(Lin)
-
Power Supply Short
-
Power Supply Open
-
Lock Bar Stuck Error
-
Motor Driver Short
-
Motor Driver Open
|
-
|
HINT:
If the engine switch indicator is blinking in green, the steering lock bar may be stuck.
PROCEDURE
1.
|
CHECK FOR DTC (LIN COMMUNICATION SYSTEM)
|
(a) Check for DTCs (See page
).
OK:
LIN communication system DTC B2287 is not output simultaneously.
HINT:
-
If the lock and unlock functions of the steering lock do not operate, the engine switch cannot be turned on (IG) and the engine cannot be started.
-
If LIN communication does not function, the steering lock cannot be locked or unlocked.
OK
|
|
|
2.
|
READ VALUE USING TECHSTREAM (STEERING UNLOCK SWITCH)
|
(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) According to the display on the Techstream, read the Data List.
Power Source Control
Tester Display
|
Measurement Item/Range
|
Normal Condition
|
Diagnostic Note
|
Steering Unlock Switch
|
State of steering unlock sensor signal output from steering lock actuator assembly/ON or OFF
|
ON: Steering lock unlocked*1
OFF: Steering lock locked*2
|
-
When the shift lever is in P and the engine switch is off, if any door is opened or closed, the steering lock is locked.
-
When the key is inside the vehicle and the engine switch is turned on (ACC) or on (IG), the steering lock unlocks.
-
The engine cannot be started when the steering unlock signal is off.
|
HINT:
-
If the engine switch cannot be turned on (IG), proceed to the next step.
-
*1: When the key is inside the vehicle and the engine switch is turned on (ACC) or on (IG), the steering lock unlocks.
-
*2: When the shift lever is in P and the engine switch is off, if any door is opened or closed, the steering lock is locked.
Result
Result
|
Proceed to
|
Data List item does not change
|
A
|
Data List item changes
|
B
|
A
|
|
|
3.
|
CHECK HARNESS AND CONNECTOR (BATTERY - POWER MANAGEMENT CONTROL ECU)
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR IN CIRCUIT CONNECTED TO POWER SOURCE
|
OK
|
|
|
4.
|
CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND)
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
5.
|
INSPECT STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU)
|
(a) Measure the resistance according to the value(s) in the table below.
HINT:
DTC P2285 may be stored due to an internal malfunction in the steering lock actuator. Lock and unlock position signals are sent separately to the power management control ECU from the steering lock actuator assembly to identify the steering lock position.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
Positive (+) tester probe → D29-4 (SLP1)
Negative (-) tester probe → Body ground
|
Steering lock locked*1
|
10 kΩ or higher
|
Positive (+) tester probe → D29-4 (SLP1)
Negative (-) tester probe → Body ground
|
Steering lock unlocked*2
|
Below 1 Ω
|
HINT:
-
*1: When the key is inside the vehicle and the engine switch is turned on (ACC) or on (IG), the steering lock unlocks.
-
*2: When the shift lever is in P and the engine switch is off, if any door is opened or closed, the steering lock is locked.
-
With the connector connected to the ECU, measure the resistance from the rear of the connector.
Text in Illustration
*a
|
Component with harness connected
(Steering Lock ECU)
|
|
|
OK
|
|
|
6.
|
CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - STEERING LOCK ECU)
|
(a) Disconnect the D89 power management control ECU connector.
(b) Disconnect the D29 steering lock ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
D89-3 (SLP) - D29-4 (SLP1)
|
Always
|
Below 1 Ω
|
D89-3 (SLP) or D29-4 (SLP1) - Body ground
|
Always
|
10 kΩ or higher
|
OK |
|
REPLACE POWER MANAGEMENT CONTROL ECU
(See page
)
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
|