DTC B2784: Antenna Coil Open / Short [08/2019 - ]: Procedure
WARNING: This page is about a different car, the 2022 Toyota Sequoia, 2021 Toyota Sequoia, and 2020 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK ENGINE SWITCH
- Using an oscilloscope, check the waveform.
*a Component with harness connected
(Engine Switch)*b Waveform *c Waveform (detail) - - OK
Tester Connection Condition Tool Setting Specified Condition H201-8 (CODE) - H201-6 (AGND) Engine switch off, engine switch pressed with electrical key transmitter sub-assembly held near engine switch* 2 V/DIV., 20 ms./DIV. Pulse generation
(See waveform)2 V/DIV., 100 μs./DIV. Pulse generation
(See waveform (detail))HINT:
*: Remove the transmitter battery before performing this inspection.
OK
The waveform is similar to that shown in the illustration
Result
Proceed to OK NG
Result:
OK
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to REMOVAL [08/2019 - ]
Result:
NG
REPLACE ENGINE SWITCH. Refer to REMOVAL [08/2019 - ]
- Using an oscilloscope, check the waveform.