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Steering lock motor operating when all conditions met, and then door opened:
- The steering is unlocked.
- The ignition switch is off.
- The shift position is in P.
| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM1000000028KAJ |
| 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): System Malfunction Message is Displayed on the Multi-information Display; 2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 - ] | ||
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System Malfunction Message is Displayed on the Multi-information Display |
SYSTEM DESCRIPTION
except Manual Transaxle
- If an abnormal vehicle speed information is detected by the certification ECU (smart key ECU assembly), a system malfunction message is displayed on the multi information display.
for Manual Transaxle
- If an abnormal operation that may lead to a malfunction of the steering lock ECU (steering lock actuator or upper bracket assembly), or abnormal vehicle speed information is detected by the certification ECU (smart key ECU assembly), a system malfunction message is displayed on the multi information display.
WIRING DIAGRAM
except Manual Transaxle
for Manual Transaxle
CAUTION / NOTICE / HINT
NOTICE:
-
When using the GTS with the ignition 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 / Start Key(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.
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The smart key 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 key system (for Start Function) after confirming that the communication systems are functioning properly.
Click here
![2023 - 2025 MY Corolla Corolla Hatchback GR Corolla [11/2022 - ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): HOW TO PROCEED WITH TROUBLESHOOTING](/t3Portal/stylegraphics/info.gif)
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Before replacing the certification ECU (smart key ECU assembly) or steering lock ECU (steering lock actuator or upper bracket assembly)*, refer to Registration.
Click here
- *: for Manual Transaxle
PROCEDURE
|
1. |
CHECK FOR DTC |
(a) Check for DTCs.
Body Electrical > Smart Key > Trouble Codes
Body Electrical > Power Source Control > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
DTCs are not output |
A |
|
DTC is output. |
B |
| B |
|
GO TO SMART KEY SYSTEM (for Entry Function) (DIAGNOSTIC TROUBLE CODE CHART)
|
|
|
2. |
SYSTEM CHECK |
(a) Check the vehicle specification.
|
Result |
Proceed to |
|---|---|
|
for Manual Transaxle |
A |
|
except Manual Transaxle |
B |
| B |
|
|
|
3. |
READ VALUE USING GTS (SENSOR MALFUNCTION HISTORY) |
(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 |
|---|---|---|---|---|
|
Sensor Malfunction History |
History of malfunction of position sensor in steering lock ECU (steering lock actuator or upper bracket assembly) (DTC B278196 is stored) |
OK or NG |
OK: History of malfunction for the lock or unlock sensor in the steering lock ECU (steering lock actuator or upper bracket assembly) does not exist. NG: History of both the lock and unlock sensors in the steering lock ECU (steering lock actuator or upper bracket assembly) being on exists. (Under normal operation, neither sensor is on.) |
When NG is displayed, either the position sensor in the steering lock ECU (steering lock actuator or upper bracket assembly) or the assembly itself may be malfunctioning. |
Body Electrical > Smart Key > Data List
|
Tester Display |
|---|
|
Sensor Malfunction History |
OK:
OK is displayed on the GTS.
| NG |
|
REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY) |
|
|
4. |
READ VALUE USING GTS (VEHICLE RUNNING CONDITION (LINE)) |
(a) 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 |
|---|---|---|---|---|
|
Vehicle Running Condition (Line) |
Vehicle being driven or stopped |
Stop or Running |
Stop: Vehicle stopped Running: Vehicle being driven at 5 km/h (3 mph) or more |
- |
Body Electrical > Power Source Control > Data List
|
Tester Display |
|---|
|
Vehicle Running Condition (Line) |
OK:
The GTS display changes correctly in response to the vehicle condition.
| NG |
|
GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) w/ Electric Parking Brake System: Click here
w/o Electric Parking Brake System: Click here
|
|
|
5. |
READ VALUE USING GTS (NEUTRAL SWITCH / CLUTCH SWITCH) |
(a) 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 |
|---|---|---|---|---|
|
Neutral Switch / Clutch Switch |
State of clutch pedal |
OFF or ON |
OFF: Clutch pedal released ON: Clutch pedal depressed |
|
Body Electrical > Power Source Control > Data List
|
Tester Display |
|---|
|
Neutral Switch / Clutch Switch |
OK:
The GTS display changes correctly in response to the clutch pedal operation.
| NG |
|
|
|
6. |
CHECK HARNESS AND CONNECTOR (POWER SOURCE AND BODY GROUND) |
(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 |
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 |
|
|
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.
|
(b) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
| OK |
|
REPLACE 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) - 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 |
|
|
9. |
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.
|
(b) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
| OK |
|
| NG |
|
REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY) |
|
10. |
INSPECT CLUTCH SWITCH ASSEMBLY |
Click here
| NG |
|
|
|
11. |
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - CLUTCH START SWITCH ASSEMBLY) |
(a) Disconnect the O175 certification ECU (smart key ECU assembly) connector.
(b) Disconnect the A60 clutch switch assembly connector.
(c) Disconnect the A139 ECM connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O175-10 (STAR) - A139-23 (NSW) |
Always |
Below 1 Ω |
|
O175-10 (STAR) - A60-2 |
Always |
Below 1 Ω |
|
O175-3 (STA) or A60-1 - Other terminals and body ground |
Always |
10 kΩ or higher |
|
O175-3 (STA) or A139-30 (STA) Other terminals and body ground |
Always |
10 kΩ or higher |
|
O175-10 (STAR) or A139-23 (NSW) - Other terminals and body ground |
Always |
10 kΩ or higher |
|
O175-10 (STAR) or A60-2 - Other terminals and body ground |
Always |
10 kΩ or higher |
| OK |
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
12. |
READ VALUE USING GTS (VEHICLE RUNNING CONDITION (LINE)) |
(a) 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 |
|---|---|---|---|---|
|
Vehicle Running Condition (Line) |
Vehicle being driven or stopped |
Stop or Running |
Stop: Vehicle stopped Running: Vehicle being driven at 5 km/h (3 mph) or more |
- |
Body Electrical > Power Source Control > Data List
|
Tester Display |
|---|
|
Vehicle Running Condition (Line) |
OK:
The GTS display changes correctly in response to the vehicle condition.
| OK |
|
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
| NG |
|
GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) w/ Electric Parking Brake System: Click here
w/o Electric Parking Brake System: Click here
|
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