Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM1000000028KAK |
Model Year Start: 2023 |
Model: GR Corolla |
Prod Date Range: [11/2022 -
] |
Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): Steering Lock does not Lock; 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 - ] |
Steering Lock does not Lock
|
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.
When the steering lock is operating, the steering may not lock when the lock bar is not aligned with the lock hole of the steering column. In this case, the steering can be locked by turning the steering wheel a little, as is done for a vehicle with a mechanical key, to change the position of the lock hole.
Related Data List and Active Test Items
Problem Symptom
|
Data List and Active Test
|
Steering Lock does not Lock
|
Smart Key
-
Steering Lock Request Receive
-
S Code Check
-
L Code Check
Main Body
-
FR Door Courtesy Switch Status
-
FL Door Courtesy Switch Status
-
RR Door Courtesy Switch Status
-
RL Door Courtesy Switch Status
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
PROCEDURE
1.
|
READ VALUE USING GTS (STEERING LOCK REQUEST RECEIVE)
|
(a) Read the Data List according to the display on the GTS.
Body Electrical > Smart Key > Data List
Tester Display
|
Measurement Item
|
Range
|
Normal Condition
|
Diagnostic Note
|
Steering Lock Request Receive
|
Status of steering lock command from certification ECU (smart key ECU assembly)
|
OK or NG
|
OK: Certification ECU (smart key ECU assembly) sends steering lock command (within 10 seconds of any door opened with ignition switch off)
NG: Certification ECU (smart key ECU assembly) does not send steering lock command (no door opened with ignition switch off)
|
If OK is not displayed even though the steering lock conditions are met, the certification ECU (smart key ECU assembly) may be malfunctioning.
|
Body Electrical > Smart Key > Data List
Tester Display
|
Steering Lock Request Receive
|
OK:
The certification ECU (smart key ECU assembly) receives a lock request signal within 10 seconds of turning the ignition switch from ON to ACC or off and opening a door, and OK is displayed on the GTS screen.
OK
|
|
|
2.
|
READ VALUE USING GTS (S CODE CHECK)
|
(a) Read the Data List according to the display on the GTS.
Body Electrical > Smart Key > Data List
Tester Display
|
Measurement Item
|
Range
|
Normal Condition
|
Diagnostic Note
|
S Code Check
|
Verification result between certification ECU (smart key ECU assembly) and ID code box (immobiliser code ECU)
|
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 > Smart Key > Data List
Tester Display
|
S Code Check
|
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 was replaced, but not registered.
-
An ECU was replaced with an ECU which has already been registered to another vehicle.
OK
|
|
|
3.
|
READ VALUE USING GTS (L CODE CHECK)
|
(a) Read the Data List according to the display on the GTS.
Body Electrical > Smart Key > 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 > Smart Key > Data List
Tester Display
|
L Code Check
|
OK:
OK is displayed on the GTS.
HINT:
Reasons for verification failure:
-
The steering lock ECU (steering lock actuator or upper bracket assembly) or certification ECU (smart key ECU assembly) 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.
OK
|
|
|
4.
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CHECK HARNESS AND CONNECTOR (POWER SOURCE)
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(a) Disconnect the I59 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
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Specified Condition
|
I59-1 (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
|
I59-7 (B) - Body ground
|
Always
|
11 to 14 V
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
5.
|
CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY)
|
(a) Connect the I59 steering lock ECU (steering lock actuator or upper bracket assembly) connector.
|
|
*a
|
Component with harness connected
(Steering lock ECU (steering lock actuator or upper bracket assembly))
|
*b
|
Waveform
|
*c
|
Steering lock motor not operating
|
*d
|
Steering lock motor operating
|
|
|
(b) Check the signal waveform according to the condition(s) in the table below.
Tester Connection
|
Condition
|
Tool Setting
|
Specified Condition
|
I59-3 (IGE) - I59-1 (GND)
|
Steering lock motor operating when all conditions met, and then door opened:
-
Steering unlocked
-
Ignition switch turned off
|
2 V/DIV., 200 ms./DIV.
|
Pulse generation
(See waveform)
|
NG
|
|
|
6.
|
CHECK HARNESS AND CONNECTOR (STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY) - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))
|
(a) Disconnect the I59 steering lock ECU (steering lock actuator or upper bracket assembly) connector.
(b) Disconnect the I167 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
|
I59-3 (IGE) - I167-24 (SLR+)
|
Always
|
Below 1 Ω
|
I59-3 (IGE) or I167-24 (SLR+) - Other terminals and body ground
|
Always
|
10 kΩ or higher
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
7.
|
CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY)
|
(a) Connect the I59 steering lock ECU (steering lock actuator or upper bracket assembly) connector.
|
|
*a
|
Component with harness connected
(Steering lock ECU (steering lock actuator or upper bracket assembly))
|
|
|
(b) Connect the I167 certification ECU (smart key ECU assembly) connector.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Condition
|
Specified Condition
|
I59-3 (IGE) - Body ground
|
Always
|
11 to 14 V
|
8.
|
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 and perform registration.
Click here
HINT:
For replacement.
Click here
(b) Read the Data List according to the display on the GTS.
Body Electrical > Smart Key > 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 > Smart Key > Data List
Tester Display
|
L Code Check
|
OK:
OK is displayed on the GTS.
OK |
|
END (STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY) WAS DEFECTIVE)
|
9.
|
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
|
(a) Replace the certification ECU (smart key ECU assembly) with a new one and perform registration.
Click here
(b) Read the Data List according to the display on the GTS.
Body Electrical > Smart Key > Data List
Tester Display
|
Measurement Item
|
Range
|
Normal Condition
|
Diagnostic Note
|
S Code Check
|
Verification result between certification ECU (smart key ECU assembly) and ID code box (immobiliser code ECU)
|
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 > Smart Key > Data List
Tester Display
|
S Code Check
|
OK:
OK is displayed on the GTS.
OK |
|
END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE)
|
10.
|
READ VALUE USING GTS (DOOR COURTESY SWITCH STATUS)
|
(a) Using the GTS, check the following main body ECU (multiplex network body ECU) Data List item by opening and closing each door to confirm the state of each door courtesy light switch.
Body Electrical > Main Body > Data List
Tester Display
|
Measurement Item
|
Range
|
Normal Condition
|
Diagnostic Note
|
FR Door Courtesy Switch Status
|
Front door RH courtesy light switch signal
|
OFF or ON
|
OFF: Front door RH closed
ON: Front door RH open
|
-
|
FL Door Courtesy Switch Status
|
Front door LH courtesy light switch signal
|
OFF or ON
|
OFF: Front door LH closed
ON: Front door LH open
|
-
|
RR Door Courtesy Switch Status
|
Rear door RH courtesy light switch signal
|
OFF or ON
|
OFF: Rear door RH closed
ON: Rear door RH open
|
-
|
RL Door Courtesy Switch Status
|
Rear door LH courtesy light switch signal
|
OFF or ON
|
OFF: Rear door LH closed
ON: Rear door LH open
|
-
|
Body Electrical > Main Body > Data List
Tester Display
|
FR Door Courtesy Switch Status
|
FL Door Courtesy Switch Status
|
RR Door Courtesy Switch Status
|
RL Door Courtesy Switch Status
|
OK:
The Data List item changes in accordance with the opening and closing of each door.
OK
|
|
|
11.
|
READ VALUE USING GTS (STEERING LOCK DATA FIX)
|
(a) Enter the following menus: Body Electrical / Smart Key / Data List.
(b) Check that the steering is unlocked.
(c) Read the Data List according to the display on the GTS.
Body Electrical > Smart Key > Data List
Tester Display
|
Measurement Item
|
Range
|
Normal Condition
|
Diagnostic Note
|
Steering Lock Data Fix
|
Steering lock ECU data fix status
|
No or Yes
|
No: Data not fix
Yes: Date fixed
|
-
|
Body Electrical > Smart Key > Data List
Tester Display
|
Steering Lock Data Fix
|
OK:
Yes is displayed on the GTS.
OK
|
|
|
12.
|
READ VALUE USING GTS (STEERING LOCK REQUEST RECEIVE)
|
(a) Replace the certification ECU (smart key ECU assembly) with a new one and perform registration.
Click here
(b) Read the Data List according to the display on the GTS.
Body Electrical > Smart Key > Data List
Tester Display
|
Measurement Item
|
Range
|
Normal Condition
|
Diagnostic Note
|
Steering Lock Request Receive
|
Status of steering lock command from certification ECU (smart key ECU assembly)
|
OK or NG
|
OK: Certification ECU (smart key ECU assembly) sends steering lock command (within 10 seconds of any door opened with ignition switch off)
NG: Certification ECU (smart key ECU assembly) does not send steering lock command (no door opened with ignition switch off)
|
If OK is not displayed even though the steering lock conditions are met, the certification ECU (smart key ECU assembly) may be malfunctioning.
|
Body Electrical > Smart Key > Data List
Tester Display
|
Steering Lock Request Receive
|
OK:
Within 10 seconds after any of the doors is opened with ignition switch off, the Data List item changes to "OK".
OK |
|
END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE)
|
|