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

THEFT DETERRENT / KEYLESS ENTRY  ENTRY AND START SYSTEM(for Start Function)  Unable to Unlock Steering Wheel (Engine cannot Start)  


DESCRIPTION

The steering lock ECU (steering lock actuator or upper bracket assembly) activates the steering lock motor and moves the lock bar into the steering column to lock the steering.

The steering may not unlock when the lock bar gets stuck in the lock hole of the steering column. In this case, if the engine switch is turned on (IG) while shaking the steering wheel, as is done for a vehicle with a mechanical key, the lock bar will be unlocked. If the certification ECU (smart key ECU assembly), ID code box (immobiliser code ECU) or ECM is replaced, the system needs to be initialized. Otherwise, the steering cannot be unlocked and the engine cannot be started.

Related Data List and Active Test Items
Problem Symptom Data List and Active Test
Unable to unlock steering wheel (Engine cannot start)
Entry&Start
·

Unlock Request Receive

·

S Code Check

·

L Code Check

·

Steering Unlock



WIRING DIAGRAM

C382197E25
2.281,2.917 2.677,3.094 0.396,0.177 10 false SLR+ 2.354,3.344 2.667,3.531 0.313,0.188 10 false SLP 2.51,3.979 2.667,4.167 0.156,0.188 10 false E 5.365,2.896 5.677,3.083 0.313,0.188 10 false IGE 5.365,3.344 5.771,3.51 0.406,0.167 10 false SLP1 5.365,3.979 5.729,4.167 0.365,0.188 10 false GND 5.375,0.333 5.646,0.51 0.271,0.177 10 false B 3.052,0.354 3.875,0.563 0.823,0.208 10 false from Battery 4.385,0.49 5.49,1 1.104,0.51 10 false STRG LOCK 0.083,2.667 1.667,3.042 1.583,0.375 10 false ID Code Box (Immobiliser Code ECU) 1.646,4.406 1.99,4.604 0.344,0.198 10 false N156 0.688,5.323 2.563,5.615 1.875,0.292 10 false : LIN Communication Line 1.625,4.573 3.74,5 2.115,0.427 10 false Certification ECU (Smart Key ECU Assembly) 4.688,4.531 5.031,4.729 0.344,0.198 10 false N157 4.688,4.667 7.156,5.115 2.469,0.448 10 false Steering Lock Actuator or Upper Bracket Assembly (Steering Lock ECU) 2.75,2.792 2.958,2.969 0.208,0.177 10 false 25 2.75,3.229 2.958,3.406 0.208,0.177 10 false 14 2.74,3.854 2.948,4.031 0.208,0.177 10 false 18 5.146,0.208 5.302,0.375 0.156,0.167 10 false 7 5.146,2.781 5.302,2.948 0.156,0.167 10 false 3 5.156,3.208 5.313,3.375 0.156,0.167 10 false 4 5.156,3.854 5.313,4.021 0.156,0.167 10 false 1

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

·

After completing repairs, confirm that the problem does not recur.

·

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

·

Make sure that no DTCs are output. If any DTCs are output, proceed to the Diagnostic Trouble Code Chart.

·

Inspect the fuses for circuits related to this system before performing the following procedure.

·

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



PROCEDURE

1.CHECK POWER SOURCE MODE CHANGING FUNCTION (SWITCH CONDITION)
a.

Check the power source mode change.

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>ENTRY AND START SYSTEM (for Start Function)>OPERATION CHECK

OK:

The power source mode changes to on (IG).



Result:
Proceed to
OK
NG



OK

2.CHECK INDICATOR

NG

GO TO ENTRY AND START SYSTEM (for Start Function) (Power Source Mode does not Change to ON (IG and ACC))

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>ENTRY AND START SYSTEM (for Start Function)>Power Source Mode does not Change to ON (IG and ACC)


2.CHECK INDICATOR
a.

With the engine switch on (IG), check that push engine switch while turning steering wheel in either direction is displayed on the multi-information display in the combination meter assembly.


Result:
Result Proceed to
Push engine switch while turning steering wheel in either direction is displayed. A
Push engine switch while turning steering wheel in either direction is not displayed. B



A

3.CHECK STEERING UNLOCK

B

4.CHECK FOR DTC
3.CHECK STEERING UNLOCK
a.

Turn the steering wheel left and right, and then press the engine switch.


b.

Check that the steering is unlocked.


Result:
Result Proceed to
The steering is unlocked. A
The steering is not unlocked. B



A

END (STEERING LOCK IS NORMAL)

B

4.CHECK FOR DTC
4.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 and note any DTCs that are output.

Body Electrical > Entry&Start > Trouble Codes
50001 125
Body Electrical > Power Source Control > Trouble Codes
50001 223

Result:
Result Proceed to
DTCs are not output. A
DTCs are output. B



A

5.READ VALUE USING GTS (UNLOCK REQUEST RECEIVE)

B

GO TO DIAGNOSTIC PROCEDURE INDICATED BY OUTPUT DTC

Click hereVehicle Interior>THEFT DETERRENT / KEYLESS ENTRY>ENTRY AND START SYSTEM (for Start Function)>DIAGNOSTIC TROUBLE CODE CHART


5.READ VALUE USING GTS (UNLOCK REQUEST RECEIVE)
a.

Enter the following menus: Body Electrical / Entry&Start / Data List.


b.

Read the Data List according to the display on the GTS.

Body Electrical > Entry&Start > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Unlock Request Receive Status of steering unlock command from certification ECU (smart key ECU assembly) OK or NG OK: Unlock request signal received within 10 seconds of engine switch being turned on (IG) or on (ACC) or of an engine start operation being performed
NG: Engine switch not turned on (IG) or on (ACC) and engine start operation not being performed
·

The engine cannot be started when an unlock request signal cannot be received.

·

If OK is not displayed even though the steering unlock conditions are met, the certification ECU (smart key ECU assembly) may be malfunctioning.


Body Electrical > Entry&Start > Data List
Tester Display
Unlock Request Receive
50003 125 67
OK:

Within 10 seconds of turning the engine switch on (ACC) or on (IG) or starting the engine, the Data List item changes to "OK".



Result:
Proceed to
OK
NG



OK

6.READ VALUE USING GTS (S CODE CHECK)

NG

14.CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY)
6.READ VALUE USING GTS (S CODE CHECK)
a.

Enter the following menus: Body Electrical / Entry&Start / Data List.


b.

Read the Data List according to the display on the GTS.

Body Electrical > Entry&Start > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
S Code Check S code verification result OK or NG OK: Verification result normal
NG: Verification result abnormal 		When NG is displayed:
·

The ID code for the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is not registered, or the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is malfunctioning.

·

The steering cannot be locked.

·

The steering cannot be unlocked (the engine cannot be started).


Body Electrical > Entry&Start > Data List
Tester Display
S Code Check
50003 125 65
OK:

OK is displayed on the GTS.


HINT:

Reasons for verification failure:

·

The certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is malfunctioning.

·

There is a problem with the communication between ECUs.

·

An ECU is replaced, but is not registered.

·

An ECU is replaced with an ECU which has a code already stored in it.




Result:
Proceed to
OK
NG



OK

7.READ VALUE USING GTS (L CODE CHECK)

NG

13.CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
7.READ VALUE USING GTS (L CODE CHECK)
a.

Enter the following menus: Body Electrical / Entry&Start / Data List.


b.

Read the Data List according to the display on the GTS.

Body Electrical > Entry&Start > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
L Code Check Verification result between ID code box (immobiliser code ECU) and steering lock ECU (steering lock actuator or upper bracket assembly) OK or NG OK: Verification result normal
NG: Verification result abnormal 		When NG is displayed:
·

The ID code for the ID code box (immobiliser code ECU) or steering lock ECU (steering lock actuator or upper bracket assembly) is not registered, or the ID code box (immobiliser code ECU) or steering lock ECU (steering lock actuator or upper bracket assembly) is malfunctioning.

·

The steering cannot be locked.

·

The steering cannot be unlocked (the engine cannot be started).


Body Electrical > Entry&Start > Data List
Tester Display
L Code Check
50003 125 66
OK:

OK is displayed on the GTS.


HINT:

Reasons for verification failure:

·

The steering lock ECU (steering lock actuator or upper bracket assembly) or ID code box (immobiliser code ECU) is malfunctioning.

·

There is a problem with the communication between ECUs.

·

An ECU is replaced, but is not registered.

·

An ECU is replaced with an ECU which has a code already stored in it.




Result:
Proceed to
OK
NG



OK

8.CHECK HARNESS AND CONNECTOR (STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY) - POWER SUPPLY AND BODY GROUND)

NG

12.CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY)
8.CHECK HARNESS AND CONNECTOR (STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY) - POWER SUPPLY AND BODY GROUND)
a.

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


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
N157-1 (GND) - Body ground Always Below 1 Ω


NOTICE:

If the result is not as specified, check for looseness in the ground cable connection.



c.

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

Standard Voltage:
Tester Connection Condition Specified Condition
N157-7 (B) - Body ground Always 11 to 14 V



Result:
Proceed to
OK
NG



OK

9.CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY) (MOTOR ACTIVATION COMMAND SIGNAL)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

9.CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY) (MOTOR ACTIVATION COMMAND SIGNAL)
a.

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


b.
C389181C19
0.323,2.917 1.656,3.021 1.333,0.104 2.344,2.969 2.75,3.073 0.406,0.104 1.594,4.063 2.417,4.167 0.823,0.104 0.167,0.844 0.573,1.083 0.406,0.24 0.917,3.198 0.917,3.031 false 2,4.063 2,3.896 false 2.573,3.25 2.573,3.073 false 0.688,1.75 1.854,1.083 false 2.302,1.083 2.917,1.75 false 0.104,0.094 0.417,0.25 0.313,0.156 10 false *a 0.844,3.219 1.156,3.375 0.313,0.156 10 false *c 1.938,3.75 2.25,3.906 0.313,0.156 10 false *d 2.5,3.281 2.813,3.479 0.313,0.198 10 false *c 0.573,1.802 1.031,2 0.458,0.198 10 false IGE 2.792,1.802 3.25,2 0.458,0.198 10 false GND 2.969,4.063 3.427,4.26 0.458,0.198 10 false GND 0.229,0.885 0.688,1.083 0.458,0.198 10 false N157 0.146,2.375 0.458,2.531 0.313,0.156 10 false *b
*a Component with harness connected
(Steering Lock ECU (Steering Lock Actuator or Upper Bracket Assembly))
*b Steering Lock Motor not Operating
*c Steering Lock Motor Operating
*d Waveform


Using an oscilloscope, check the waveform.

OK:
Tester Connection Tool Setting Condition Specified Condition
N157-3 (IGE) - N157-1 (GND) 2 V/DIV., 200 ms./DIV. Any door opened when following conditions are met, and then steering lock motor activated:
·

Shift state park (P)

·

Steering lock unlocked in advance by carrying key and turning engine switch on (IG)

·

After above conditions are met, engine switch turned off


Pulse generation
(See waveform)


HINT:
·

When taking measurements when the lock motor is stopped, it is not necessary to perform any operations.

·

In order to take measurements when the lock motor is operating, perform either of the following operations:

-

To unlock the steering, carry the key and turn the engine switch on (ACC) or on (IG).

-

To lock the steering, turn the engine switch off with the shift state park (P), and then open a door.





Result:
Proceed to
OK
NG



OK

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

Click hereSteering>STEERING COLUMN>STEERING COLUMN ASSEMBLY>DISASSEMBLY


NG

10.CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY))
10.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
N157-3 (IGE) - N156-25 (SLR+) Always Below 1 Ω
N157-3 (IGE) or N156-25 (SLR+) - Other terminals and body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

11.CHECK STEERING LOCK ECU

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

11.CHECK STEERING LOCK ECU
a.

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


b.
C407388C04
0.427,0.823 0.844,1.083 0.417,0.26 2.583,2.75 1.865,1.979 true 0.177,0.208 0.49,0.365 0.313,0.156 10 false *a 2.542,2.802 3.052,3.063 0.51,0.26 10 false IGE 0.479,0.865 0.823,1.031 0.344,0.167 10 false N157
*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
N157-3 (IGE) - Body ground Always 11 to 14 V



Result:
Proceed to
OK
NG



OK

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

NG

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

Click hereSteering>STEERING COLUMN>STEERING COLUMN ASSEMBLY>DISASSEMBLY


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

Replace the steering lock ECU (steering lock actuator or upper bracket assembly) with a new one.

Click hereSteering>STEERING COLUMN>STEERING COLUMN ASSEMBLY>DISASSEMBLY


b.

Enter the following menus: Body Electrical / Entry&Start / Data List.


c.

Read the Data List according to the display on the GTS.

Body Electrical > Entry&Start > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
L Code Check Verification result between ID code box (immobiliser code ECU) and steering lock ECU (steering lock actuator or upper bracket assembly) OK or NG OK: Verification result normal
NG: Verification result abnormal 		When NG is displayed:
·

The ID code for the ID code box (immobiliser code ECU) or steering lock ECU (steering lock actuator or upper bracket assembly) is not registered, or the ID code box (immobiliser code ECU) or steering lock ECU (steering lock actuator or upper bracket assembly) is malfunctioning.

·

The steering cannot be locked.

·

The steering cannot be unlocked (the engine cannot be started).


Body Electrical > Entry&Start > Data List
Tester Display
L Code Check
50003 125 66
OK:

OK is displayed on the GTS.



Result:
Proceed to
OK
NG



OK

END (STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY) WAS DEFECTIVE)

NG

REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

13.CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
a.

Replace the certification ECU (smart key ECU assembly) with a new one and perform registration again.

HINT:

Refer to the Service Bulletin.



b.

Enter the following menus: Body Electrical / Entry&Start / Data List.


c.

Read the Data List according to the display on the GTS.

Body Electrical > Entry&Start > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
S Code Check S code verification result OK or NG OK: Verification result normal
NG: Verification result abnormal 		When NG is displayed:
·

The ID code for the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is not registered, or the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is malfunctioning.

·

The steering cannot be locked.

·

The steering cannot be unlocked (the engine cannot be started).


Body Electrical > Entry&Start > Data List
Tester Display
S Code Check
50003 125 65
OK:

OK is displayed on the GTS.



Result:
Proceed to
OK
NG



OK

END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE)

NG

REPLACE ID CODE BOX (IMMOBILISER CODE ECU)

14.CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY)
a.
C407389C03
1.51,0.875 1.927,1.135 0.417,0.26 2.552,2.74 1.719,1.948 true 0.177,0.208 0.49,0.365 0.313,0.156 10 false *a 2.469,2.771 2.906,3.063 0.438,0.292 10 false SLP1 1.563,0.927 2.156,1.427 0.594,0.5 10 false N157
*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 Always 11 to 14 V



Result:
Proceed to
OK
NG



OK

15.READ VALUE USING GTS (STEERING UNLOCK)

NG

17.CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY))
15.READ VALUE USING GTS (STEERING UNLOCK)
a.

Check that the steering is locked.


b.

Enter the following menus: Body Electrical / Entry&Start / Data List.


c.

Read the Data List according to the display on the GTS.

Body Electrical > Entry&Start > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Steering Unlock Steering lock ECU (steering lock actuator or upper bracket assembly) unlock confirmation status Unset or Set Unset: Unlock not confirmed
Set: Unlock confirmed 		When Unset is displayed, the steering is not unlocked (the engine cannot be started).
Body Electrical > Entry&Start > Data List
Tester Display
Steering Unlock
50003 125 48
OK:

Set is displayed on the GTS.



Result:
Proceed to
OK
NG



OK

16.READ VALUE USING GTS (UNLOCK REQUEST RECEIVE)

NG

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

Click hereSteering>STEERING COLUMN>STEERING COLUMN ASSEMBLY>DISASSEMBLY


16.READ VALUE USING GTS (UNLOCK REQUEST RECEIVE)
a.

Replace the certification ECU (smart key ECU assembly) with a new one.

HINT:

Refer to the Service Bulletin.



b.

Perform registration.

HINT:

Refer to the Service Bulletin.



c.

Enter the following menus: Body Electrical / Entry&Start / Data List.


d.

Read the Data List according to the display on the GTS.

Body Electrical > Entry&Start > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Unlock Request Receive Status of steering unlock command from certification ECU (smart key ECU assembly) OK or NG OK: Unlock request signal received within 10 seconds of engine switch being turned on (IG) or on (ACC) or of an engine start operation being performed
NG: Engine switch not turned on (IG) or on (ACC) and engine start operation not being performed
·

The engine cannot be started when an unlock request signal cannot be received.

·

If OK is not displayed even though the steering unlock conditions are met, the certification ECU (smart key ECU assembly) may be malfunctioning.


Body Electrical > Entry&Start > Data List
Tester Display
Unlock Request Receive
50003 125 67
OK:

Within 10 seconds of turning the engine switch on (ACC) or on (IG) or starting the engine, the Data List item changes to "OK".



Result:
Proceed to
OK
NG



OK

END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE)

NG

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

Click hereSteering>STEERING COLUMN>STEERING COLUMN ASSEMBLY>DISASSEMBLY


17.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
N157-4 (SLP1) - N156-14 (SLP) Always Below 1 Ω
N157-4 (SLP1) or N156-14 (SLP) - Other terminals and body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

18.READ VALUE USING GTS (UNLOCK REQUEST RECEIVE)

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

18.READ VALUE USING GTS (UNLOCK REQUEST RECEIVE)
a.

Replace the steering lock ECU (steering lock actuator or upper bracket assembly) with a new one.

Click hereSteering>STEERING COLUMN>STEERING COLUMN ASSEMBLY>DISASSEMBLY


b.

Perform registration.

HINT:

Refer to the Service Bulletin.



c.

Enter the following menus: Body Electrical / Entry&Start / Data List.


d.

Read the Data List according to the display on the GTS.

Body Electrical > Entry&Start > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Unlock Request Receive Status of steering unlock command from certification ECU (smart key ECU assembly) OK or NG OK: Unlock request signal received within 10 seconds of engine switch being turned on (IG) or on (ACC) or of an engine start operation being performed
NG: Engine switch not turned on (IG) or on (ACC) and engine start operation not being performed
·

The engine cannot be started when an unlock request signal cannot be received.

·

If OK is not displayed even though the steering unlock conditions are met, the certification ECU (smart key ECU assembly) may be malfunctioning.


Body Electrical > Entry&Start > Data List
Tester Display
Unlock Request Receive
50003 125 67
OK:

Within 10 seconds of turning the engine switch on (ACC) or on (IG) or starting the engine, the Data List item changes to "OK".



Result:
Proceed to
OK
NG



OK

END (STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY) WAS DEFECTIVE)

NG

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)