for Manual Transaxle
-
Steering lock motor operating when all conditions met, and then door opened:
- The steering is unlocked.
- The engine switch is off.
| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM100000001DA26 |
| Model Year Start: 2019 | Model: GR Corolla | Prod Date Range: [06/2018 - 01/2019] |
| Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): System Malfunction Message is Displayed on the Multi-information Display; 2019 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 01/2019] | ||
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System Malfunction Message is Displayed on the Multi-information Display |
SYSTEM DESCRIPTION
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
CAUTION / NOTICE / HINT
NOTICE:
- When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus Body Electrical Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
-
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.
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![2019 MY Corolla Corolla Hatchback GR Corolla [06/2018 - 01/2019]; 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
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 U0129 is output. |
B |
|
DTC B2271, B2278, B2282, B2781, B2782, B2788 or U0155 is output. |
C |
| B |
|
GO TO SMART KEY SYSTEM (for Entry Function) (DIAGNOSTIC TROUBLE CODE CHART) |
| C |
|
GO TO SMART KEY SYSTEM (for Start Function) (DIAGNOSTIC TROUBLE CODE CHART) |
|
|
2. |
READ VALUE USING TECHSTREAM (STEERING LOCK) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Smart Key / Data List.
(e) Read the Data List according to the display on the Techstream.
Body Electrical > Smart Key > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Sensor Value |
History of malfunction of position sensor in steering lock ECU (steering lock actuator or upper bracket assembly) (DTC B2781 is stored) |
OK or NG(Past) |
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(Past): 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(Past) 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 Value |
OK:
OK is displayed on the Techstream.
| NG |
|
REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY) |
|
|
3. |
READ VALUE USING TECHSTREAM (SENSOR BALUE) |
(a) Enter the following menus: Body Electrical / Power Source Control / Data List.
(b) Read the Data List according to the display on the Techstream.
Body Electrical > Power Source Control > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
IG Circuit |
IG relay coil circuit malfunction |
OK or NG |
OK: Circuit normal NG: Circuit malfunctioning |
|
Body Electrical > Power Source Control > Data List
|
Tester Display |
|---|
|
IG Circuit |
|
Result |
Proceed to |
|---|---|
|
"NG" is displayed on the Techstream (for Manual Transaxle) |
A |
|
"NG" is displayed on the Techstream (except Manual Transaxle) |
B |
|
"OK" is displayed on the Techstream |
C |
| B |
|
| C |
|
|
|
4. |
READ VALUE USING TECHSTREAM (NEUTRAL SW/ CLUTCH SW) |
(a) Enter the following menus: Body Electrical / Power Source Control / Data List.
(b) Read the Data List according to the display on the Techstream.
Body Electrical > Power Source Control > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Neutral SW/ Clutch SW |
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 SW/ Clutch SW |
OK:
The Techstream display changes correctly in response to the clutch pedal operation.
| NG |
|
|
|
5. |
READ VALUE USING TECHSTREAM (VEHICLE SPEED SIGNAL) |
(a) Enter the following menus: Body Electrical / Power Source Control / Data List.
(b) Read the Data List according to the display on the Techstream.
Body Electrical > Power Source Control > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Vehicle Speed Signal |
Vehicle being driven or stopped |
Stop or Run |
Stop: Vehicle stopped Run: Vehicle being driven at 5 km/h (3 mph) or more |
- |
Body Electrical > Power Source Control > Data List
|
Tester Display |
|---|
|
Vehicle Speed Signal |
OK:
The Techstream display changes correctly in response to the vehicle condition.
| NG |
|
GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) |
|
|
6. |
CHECK HARNESS AND CONNECTOR (POWER SOURCE) |
(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:
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 I1 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) - I1-25 (SLR+) |
Always |
Below 1 Ω |
|
I59-3 (IGE) or I1-25 (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 |
(a) Remove the clutch switch assembly.
Click here
(b) Inspect the clutch switch assembly.
Click here
| NG |
|
|
|
11. |
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - CLUTCH SWITCH ASSEMBLY) |
(a) Disconnect the O62 certification ECU (smart key ECU assembly) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
O62-2 (STAR) - A60-2 |
Always |
Below 1 Ω |
|
O62-2 (STAR) or A60-2 - Other terminals and body ground |
Always |
10 kΩ or higher |
| OK |
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|