| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM100000001N4QB |
| Model Year Start: 2021 | Model: Corolla | Prod Date Range: [04/2020 - ] |
| Title: CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM (for HV Model): RED INDICATOR REMAINS ON; 2021 - 2025 MY Corolla Corolla HV [04/2020 - ] | ||
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RED INDICATOR REMAINS ON |
DESCRIPTION
This means that the DCM (telematics transceiver) has detected a malfunction in the safety connect system and stored a DTC or specific vehicle control history (RoB) Code.
PROCEDURE
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1. |
CHECK DTC |
(a) Turn the power switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the power switch on (IG) and wait for 10 seconds or more.
(d) Turn the Techstream on.
(e) Clear the DTCs.
Body Electrical > Telematics > Clear DTCs
(f) Check for DTCs and check that no DTCs are output.
Body Electrical > Telematics > Trouble Codes
OK:
No DTCs are output.
| NG |
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GO TO DIAGNOSTIC TROUBLE CODE CHART
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2. |
CHECK VEHICLE OPERATION HISTORY |
(a) Check for vehicle control history and note any codes that are output.
Click here
![2021 - 2022 MY Corolla Corolla HV [04/2020 - 09/2022]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM (for HV Model): VEHICLE CONTROL HISTORY](/t3Portal/stylegraphics/info.gif)
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Result |
Proceed to |
|---|---|
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No vehicle control history is output |
A |
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Any vehicle control history is output |
B |
| B |
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GO TO VEHICLE CONTROL HISTORY
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3. |
REPLACE DCM (TELEMATICS TRANSCEIVER) |
(a) Replace the DCM (telematics transceiver) with a new one.
Click here
NOTICE:
- The power switch must be off.
- Do not exchange the DCM (telematics transceiver) with one from another vehicle.
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