Last Modified: 07-31-2024 |
6.11:8.1.0 |
Doc ID: RM1000000026XCH |
Model Year Start: 2023 |
Model: Corolla |
Prod Date Range: [09/2022 -
] |
Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): B278E87; Immobiliser Amp Missing Message; 2023 - 2025 MY Corolla Corolla HV [09/2022 - ] |
DTC
|
B278E87
|
Immobiliser Amp Missing Message
|
DESCRIPTION
A transponder key amplifier is built into the certification ECU (smart key ECU assembly).
When a communication malfunction occurs with the transponder key amplifier inside the certification ECU (smart key ECU assembly), this DTC is stored.
DTC No.
|
Detection Item
|
DTC Detection Condition
|
Trouble Area
|
Note
|
B278E87
|
Immobiliser Amp Missing Message
|
A communication malfunction with the transponder key amplifier inside the certification ECU (smart key ECU assembly) is detected. (1-trip detection logic*).
|
Certification ECU (smart key ECU assembly)
|
DTC Output Confirmation Operation:
|
-
*: Only detected while a malfunction is present and the ignition switch is ON.
Vehicle Condition and Fail-safe Function when Malfunction Detected
Vehicle Condition when Malfunction Detected
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Fail-safe Function when Malfunction Detected
|
Hybrid control system cannot be started when transmitter battery is depleted by holding electrical key transmitter sub-assembly near power switch and pressing and holding power switch with shift position in P
|
-
|
Related Data List and Active Test Items
DTC No.
|
Data List and Active Test
|
B278E87
|
-
|
CAUTION / NOTICE / HINT
PROCEDURE
(a) Clear the DTCs.
Body Electrical > Smart Key > Clear DTCs
NEXT
|
|
|
(a) Press the power switch with the electric key transmitter sub-assembly not in the cabin.
(b) Check for DTCs.
Body Electrical > Smart Key > Trouble Codes
Result
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Proceed to
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DTC B278E87 is output
|
A
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DTC B278E87 is not output
|
B
|
|