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:
|
Vehicle Condition when Malfunction Detected |
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 |
- |
DTC No. | Data List and Active Test |
---|---|
B278E87 | - |
CAUTION / NOTICE / HINT
NOTICE:
Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Start Key(CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.
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PROCEDURE
1. | CLEAR DTC |
(a) Clear the DTCs.
Body Electrical > Smart Key > Clear DTCs
|
2. |
CHECK FOR DTC |
(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 | Proceed to |
---|---|
DTC B278E87 is output |
A |
DTC B278E87 is not output |
B |
A | REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
B | USE SIMULATION METHOD TO CHECK |