THEFT DETERRENT / KEYLESS ENTRY SMART 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 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 assembly) via direct line and the steering lock position signal sent via LIN communication do not match. (1-trip detection logic*) | ·
AM2 fuse ·
Steering lock ECU (steering lock actuator assembly) ·
Certification ECU (smart key ECU assembly) ·
Wire 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 40 seconds or more with the engine switch off (with the steering locked), then turn the engine switch on (ACC) (with the steering unlocked) and wait 40 seconds or more. |
*: Only detected while a malfunction is present and the engine switch is on (IG).
| 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. |
| DTC No. | Data List Item | Active Test Item |
|---|---|---|
| B2285 | Power Source Control
Steering Unlock Switch Entry&Start
·
Power Supply Short ·
Motor Driver Short ·
Lock Bar Stuck Error |
- |
WIRING DIAGRAM
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(CAN). 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 smart 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 smart entry and start system (for Start Function) after confirming that the communication systems are functioning properly.
·Before replacing the certification ECU (smart key ECU assembly) or steering lock ECU (steering lock actuator assembly), refer to smart entry and start system (for Start Function) Precaution.
·Inspect the fuses of circuits related to this system before performing the following procedure.
·After performing repairs, perform the operation that fulfills the DTC output confirmation operation, and then confirm that no DTCs are output again.
- HINT:
-
When the cable is disconnected and reconnected to the negative (-) battery terminal, the power source mode returns to the state it was in before the cable was disconnected.
PROCEDURE
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.
- OK:
LIN communication system DTC B2785 is not output simultaneously.
- Result:
Proceed to OK NG
OK
NG
Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Turn the GTS on.
Enter the following menus: Body Electrical / Power Source Control / Data List.
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 assembly) ON or OFF ON: Steering unlocked
OFF: Steering locked·When the shift lever is in P* and the engine switch is off, if any door is opened or closed, the steering is locked.
·When the electrical key transmitter sub-assembly is inside the vehicle 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
*: except Manual Transaxle
- Result:
Result Proceed to GTS display does not change A GTS display changes B
A
B
- Result:
Proceed to OK NG
OK
NG
- Result:
Proceed to OK NG
OK
NG
Reconnect the E108 certification ECU (smart key ECU assembly) connector.
| *a | Component with harness connected
(Steering Lock ECU (Steering Lock Actuator Assembly)) |
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition E112-4 (SLP1) - Body ground Positive (+) tester probe → E61-4 (SLP1)
Negative (-) tester probe → Body groundSteering locked → unlocked* 10 kΩ or higher → Below 1 Ω
- HINT:
- ·
*: If any of the doors are opened then closed with the shift lever in P (except manual transaxle) and the engine switch off, the steering will be locked. If the engine switch is then turned on (ACC) or on (IG), the steering will be unlocked.
·DTC B2285 may be stored due to a malfunction in the steering lock ECU (steering lock actuator assembly). The steering lock position signal and unlock position signal are sent from the steering lock ECU (steering lock actuator assembly) to the certification ECU (smart key ECU assembly) individually.
- Result:
Proceed to OK NG
OK
NG
Disconnect the E110 certification ECU (smart key ECU assembly) connector.
Disconnect the E112 steering lock ECU (steering lock actuator assembly) connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition E110-26 (SLP) - E112-4 (SLP1) Always Below 1 Ω E110-26 (SLP) or E112-4 (SLP1) - Body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG