| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM100000001H8D3 |
| Model Year Start: 2020 | Model: Corolla | Prod Date Range: [01/2019 - 04/2020] |
| Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): PROBLEM SYMPTOMS TABLE; 2020 MY Corolla Corolla HV [01/2019 - 04/2020] | ||
PROBLEM SYMPTOMS TABLE
HINT:
- Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
- Inspect the fuses and relays related to the system before inspecting the suspected areas below.
- If the problem occurs in certain locations or times of day, the possibility of wave interference is high.
- If a malfunction occurred after optional components were installed by the dealer, check if there is wave interference from the components.
Smart Key System (for Start Function)
|
Symptom |
Suspected Area |
Link |
|---|---|---|
|
Power source mode does not change to on (IG) or on (ACC) |
Smart key system (for Entry Function) |
|
|
Wireless charging system* |
||
|
Affected by wave interference |
||
|
Transmitter battery |
||
|
Electrical key transmitter sub-assembly |
||
|
No. 1 indoor electrical key antenna assembly (front floor) |
||
|
No. 2 indoor electrical key antenna assembly (rear floor) |
||
|
Power switch |
||
|
Wire harness or connector |
||
|
Instrument panel junction block assembly |
||
|
Certification ECU (Smart key ECU assembly) |
||
|
Power source mode does not change to on (IG) |
Wire harness or connector |
|
|
No. 1 Integration Relay |
||
|
Instrument panel junction block assembly |
||
|
Certification ECU (Smart key ECU assembly) |
||
|
Power source mode does not change to on (ACC) |
Wire harness or connector |
|
|
Relay |
||
|
Instrument panel junction block assembly |
||
|
Certification ECU (Smart key ECU assembly) |
||
|
Power source mode does not change to ON (READY) |
Hybrid control system |
|
|
Immobiliser function |
||
|
Steering lock function |
||
|
Wire harness or connector |
||
|
Shift lock control unit assembly |
||
|
Stop light switch assembly |
||
|
Certification ECU (Smart key ECU assembly) |
||
|
New key cannot be registered |
LIN communication system |
|
|
Meter / gauge system |
||
|
Reregistration |
||
|
Electrical key transmitter sub-assembly |
||
|
Steering lock ECU (Steering lock actuator or upper bracket assembly) |
||
|
ID code box (Immobiliser code ECU) |
||
|
Certification ECU (Smart key ECU assembly) |
||
|
Additional key cannot be registered |
Smart key system (for Start Function) |
|
|
Steering lock function |
||
|
Electrical key transmitter sub-assembly |
||
|
ID code box (Immobiliser code ECU) |
||
|
Certification ECU (Smart key ECU assembly) |
||
|
New key registration warning message is not displayed |
Lighting system (int) |
|
|
Meter / gauge system |
||
|
Certification ECU (Smart key ECU assembly) |
||
|
Unable to unlock steering wheel (hybrid control system cannot start) |
Wire harness or connector |
|
|
Steering lock ECU (Steering lock actuator or upper bracket assembly) |
||
|
ID code box (Immobiliser code ECU) |
||
|
Certification ECU (Smart key ECU assembly) |
||
|
Steering lock does not lock |
Lighting system (int) |
|
|
Wire harness or connector |
||
|
Steering lock ECU (Steering lock actuator or upper bracket assembly) |
||
|
ID code box (Immobiliser code ECU) |
||
|
Certification ECU (Smart key ECU assembly) |
||
|
Security indicator light does not blink |
Wire harness or connector |
|
|
Security indicator light (Combination meter assembly) |
||
|
Main body ECU (Multiplex network body ECU) |
||
|
Certification ECU (Smart key ECU assembly) |
||
|
Immobiliser system does not operate properly |
Communication ID registration was defective |
|
|
Wire harness or connector |
||
|
ID code box (Immobiliser code ECU) |
||
|
Hybrid vehicle control ECU |
||
|
System malfunction message is displayed on the multi-information display |
Smart key system (for Entry Function) |
|
|
Smart key system (for Start Function) |
||
|
Steering lock ECU (Steering lock actuator or upper bracket assembly) |
||
|
Certification ECU (Smart key ECU assembly) |
||
|
Electronically controlled brake system |
![2020 MY Corolla Corolla HV [01/2019 - 04/2020]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): Power Source Mode does not Change to ON (IG and ACC)](/t3Portal/stylegraphics/info.gif)
- *: w/ Wireless Charging System
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