RM35X0E _58 Vehicle Interior _078378 THEFT DETERRENT / KEYLESS ENTRY _0397001 ENTRY AND START SYSTEM(for Start Function) C

THEFT DETERRENT / KEYLESS ENTRY  ENTRY AND START SYSTEM(for Start Function)  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 or upper bracket 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 or upper bracket 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 or upper bracket 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 (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
Power Source Control

Steering Unlock Switch


Entry&Start
·

Power Supply Short

·

Motor Driver Short

·

Lock Bar Stuck Error



WIRING DIAGRAM

B499507E06
0.292,3.271 3.594,3.927 3.302,0.656 10 false Steering Lock ECU (Steering Lock Actuator or Upper Bracket Assembly) 0.281,3.135 0.667,3.385 0.385,0.25 10 false N157 0.5,2.698 1.521,3.083 1.021,0.385 10 false Unlock Sensor 1.406,1.292 1.729,1.5 0.323,0.208 10 false +B 1.917,1.792 2.406,2.073 0.49,0.281 10 false SLP1 2.365,1.781 2.688,1.99 0.323,0.208 10 false 4 5.01,1.802 5.333,2.01 0.323,0.208 10 false 14 5.021,3.302 7.146,4.042 2.125,0.74 10 false Certification ECU (Smart Key ECU Assembly) 5.01,3.135 5.396,3.385 0.385,0.25 10 false N156 5.271,1.813 5.594,2.021 0.323,0.208 10 false SLP 5.573,1.177 5.896,1.385 0.323,0.208 10 false +B 6.073,1.771 6.396,1.979 0.323,0.208 10 false IC 0.885,4.333 3.719,4.74 2.833,0.406 10 false : LIN Communication Line

CAUTION / NOTICE / HINT

NOTICE:
·

When using the GTS with the engine switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start. While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.

·

The entry and start 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 entry and start system (for Start Function) after confirming that the communication systems are functioning properly.

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>ENTRY AND START SYSTEM (for Start Function)>HOW TO PROCEED WITH TROUBLESHOOTING

·

Before replacing the certification ECU (smart key ECU assembly), steering lock ECU (steering lock actuator or upper bracket assembly), refer to the Service Bulletin.

·

After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".



PROCEDURE

1.CHECK FOR DTC
a.

Connect the GTS to the DLC3.


b.

Turn the engine switch on (IG).


c.

Turn the GTS on.


d.

Enter the following menus: Body Electrical / Entry&Start / Trouble Codes.


e.

Check for DTCs.

Body Electrical > Entry&Start > Trouble Codes
50001 125
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:
Result Proceed to
DTC B2785 is not output A
DTC B2785 is output B



A

2.CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

B

GO TO DTC B2785

Click herePower Source / Network>NETWORKING>LIN COMMUNICATION SYSTEM>B2785


2.CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
a.
C342408C53
1.542,0.896 1.927,1.156 0.385,0.26 1.135,3.021 1.323,3.021 1.323,3.021 1.75,2.469 true 0.188,0.094 0.5,0.25 0.313,0.156 10 false *a 0.771,2.969 1.229,3.167 0.458,0.198 10 false SLP1 1.573,0.938 2.063,1.292 0.49,0.354 10 false N157
*a Front view of wire harness connector
(to Steering Lock ECU (Steering Lock Actuator or Upper Bracket Assembly))


Disconnect the steering lock ECU (steering lock actuator or upper bracket assembly) connector.


b.

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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
N157-4 (SLP1) - Body ground Engine switch on (IG) 11 to 14 V
N157-4 (SLP1) - Body ground Engine switch off Below 1 V



c.

Connect the steering lock ECU (steering lock actuator or upper bracket assembly) connector.


Result:
Proceed to
OK
NG



OK

3.READ VALUE USING GTS (STEERING UNLOCK SWITCH)

NG

6.CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY))
3.READ VALUE USING GTS (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 GTS.

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 or upper bracket assembly) OFF or ON OFF: Steering locked
ON: Steering unlocked
·

When the shift state is 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
50003 223 2
OK:

The GTS display changes correctly in response to the steering lock/unlock status.



Result:
Result Proceed to
GTS display does not change A
GTS display changes B



A

4.CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY)

B

REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY)

Click hereSteering>STEERING COLUMN>STEERING COLUMN ASSEMBLY>DISASSEMBLY


4.CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY)
a.
C342153C52
1.479,0.167 1.896,0.417 0.417,0.25 1.115,1.75 1.719,1.135 false 0.188,0.177 0.5,0.375 0.313,0.198 10 false *a 1.542,0.208 2.135,0.646 0.594,0.438 10 false N157 0.958,1.781 1.396,1.99 0.438,0.208 10 false SLP1
*a Component with harness connected
(Steering Lock ECU (Steering Lock Actuator or Upper Bracket Assembly))


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

Standard Voltage:
Tester Connection Condition Specified Condition
N157-4 (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 or upper bracket assembly). The steering lock position signal and unlock position signal are sent from the steering lock ECU (steering lock actuator or upper bracket assembly) to the certification ECU (smart key ECU assembly) individually.




Result:
Proceed to
OK
NG



OK

5.CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY))

NG

REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY)

Click hereSteering>STEERING COLUMN>STEERING COLUMN ASSEMBLY>DISASSEMBLY


5.CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY))
a.

Disconnect the N157 steering lock ECU (steering lock actuator or upper bracket assembly) connector.


b.

Disconnect the N156 certification ECU (smart key ECU assembly) connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
N156-14 (SLP) - N157-4 (SLP1) Always Below 1 Ω
N156-14 (SLP) or N157-4 (SLP1) - Other terminals and body ground Always 10 kΩ or higher



d.

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

Standard Voltage:
Tester Connection Condition Specified Condition
N156-14 (SLP) or N157-4 (SLP1) - Body ground Always Below 1 V



Result:
Proceed to
OK
NG



OK

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY))
a.

Disconnect the N157 steering lock ECU (steering lock actuator or upper bracket assembly) connector.


b.

Disconnect the N156 certification ECU (smart key ECU assembly) connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
N156-14 (SLP) - N157-4 (SLP1) Always Below 1 Ω
N156-14 (SLP) or N157-4 (SLP1) - Other terminals and body ground Always 10 kΩ or higher



d.

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

Standard Voltage:
Tester Connection Condition Specified Condition
N156-14 (SLP) or N157-4 (SLP1) - Body ground Always Below 1 V



Result:
Proceed to
OK
NG



OK

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR