| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM10000000295AZ |
| Model Year Start: 2023 | Model: GR Corolla | Prod Date Range: [11/2022 - ] |
| Title: THEFT DETERRENT / KEYLESS ENTRY: IMMOBILISER SYSTEM (w/o Smart Key System): HOW TO PROCEED WITH TROUBLESHOOTING; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 - ] | ||
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HOW TO PROCEED WITH TROUBLESHOOTING |
CAUTION / NOTICE / HINT
HINT:
- Use the following procedure to troubleshoot the immobiliser system (w/o Smart Key System).
- *: Use the GTS.
PROCEDURE
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1. |
VEHICLE BROUGHT TO WORKSHOP |
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2. |
CUSTOMER PROBLEM ANALYSIS |
HINT:
- In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
- Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
-
The following 5 items are important points for problem analysis:
What
Vehicle model, system name
When
Date, time, occurrence frequency
Where
Whether the problem occurs at a specific location
Under what conditions?
Whether the doors were locked or unlocked, whether the ignition switch was on, whether the hybrid control system*1 or engine*2 was running
How did it happen?
Problem symptoms
- *1: for HV Model
- *2: for Gasoline Model
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3. |
INSPECT AUXILIARY BATTERY VOLTAGE |
(a) Measure the auxiliary battery voltage with the ignition switch off.*1
Measure the auxiliary battery voltage.*2
Standard Voltage:
11 to 14 V
- *1: for HV Model
- *2: for Gasoline Model
If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step.
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Result |
Proceed to |
|---|---|
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for Gasoline Model |
A |
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for HV Model |
B |
| B |
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4. |
CRANK ENGINE FOR MORE THAN 10 SECONDS |
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5. |
CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* |
(a) Using the GTS, check for CAN communication system DTCs.
Click here
![2023 MY Corolla Corolla Hatchback GR Corolla [11/2022 - 03/2023]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): DIAGNOSIS SYSTEM](/t3Portal/stylegraphics/info.gif)
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Result |
Proceed to |
|---|---|
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CAN DTCs are not output |
A |
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CAN DTCs are output |
B |
| B |
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GO TO CAN COMMUNICATION SYSTEM
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6. |
CHECK FOR DTC* (HYBRID CONTROL AND ECM) |
(a) Check for DTCs and note any codes that are output.
HINT:
Before checking for DTCs, perform the "DTC Output Confirmation Operation" of each diagnostic procedure.
(1) for 2ZR-FXE
Powertrain > Hybrid Control > Trouble Codes
(2) for M20A-FKS
Powertrain > Engine > Trouble Codes
|
Result |
Proceed to |
|---|---|
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DTCs are not output |
A |
|
DTCs are output |
B |
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Immobiliser system DTCs are output |
C |
| B |
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GO TO DIAGNOSTIC TROUBLE CODE CHART for 2ZR-FXE: Click here
for M20A-FKS: Click here
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| C |
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7. |
CHECK FOR DTC* (TRANSPONDER KEY ECU ASSEMBLY) |
(a) Check for DTCs and note any codes that are output.
Body Electrical > Immobiliser > Trouble Codes
HINT:
Before checking for DTCs, perform the "DTC Output Confirmation Operation" of each diagnostic procedure.
|
Result |
Proceed to |
|---|---|
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DTCs are not output |
A |
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Immobiliser system DTCs are output |
B |
| B |
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8. |
PROBLEM SYMPTOMS TABLE |
(a) Refer to Problem Symptoms Table.
Click here
|
Result |
Proceed to |
|---|---|
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Fault is not listed in Problem Symptoms Table |
A |
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Fault is listed in Problem Symptoms Table |
B |
| B |
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9. |
OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Data List / Active Test
Click here
(b) Terminals of ECU
Click here
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10. |
REPAIR OR REPLACE |
HINT:
If the transponder key ECU assembly, hybrid vehicle control ECU*1, ECM*2, or door control transmitter assembly are replaced, refer to Registration.
Click here
- *1: for HV Model
- *2: for Gasoline Model
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11. |
CHECK FOR DTC* |
(a) for 2ZR-FXE
(1) Clear the DTCs.
Body Electrical > Immobiliser > Clear DTCs
Powertrain > Hybrid Control > Clear DTCs
(2) Check for DTCs.
Body Electrical > Immobiliser > Trouble Codes
Powertrain > Hybrid Control > Trouble Codes
(b) for M20A-FKS
(1) Clear the DTCs.
Body Electrical > Immobiliser > Clear DTCs
Powertrain > Engine > Clear DTCs
(2) Check for DTCs.
Body Electrical > Immobiliser > Trouble Codes
Powertrain > Engine > Trouble Codes
HINT:
Before checking for DTCs, perform the "DTC Output Confirmation Operation" of each diagnostic procedure.
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Result |
Proceed to |
|---|---|
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DTCs are not output |
A |
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Immobiliser system DTCs are output |
B |
| A |
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END |
| B |
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