Terminals Of Ecu [12/2019 - 11/2023]

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Fig 1: Charging System Terminals Of ECU [12/2019 - 11/2023]

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Hybrid Vehicle Control ECU

HINT:

The standard normal voltage between each pair of hybrid vehicle control ECU terminals is shown in the table below. The appropriate conditions for checking each pair of terminals are also indicated. The result of checks should be compared with the standard normal voltage for that pair of terminals, displayed in the Specified Condition column. The illustration above can be used as a reference to identify the hybrid vehicle control ECU terminal locations.

HYBRID VEHICLE CONTROL ECU

Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
A31-4 (HMCH) - H67-3 (E1)	CAN communication signal	Ignition switch ON	Pulse generation (Waveform 1)
A31-5 (MREL) - H67-3 (E1)	IGCT relay	Ignition switch ON	11 to 14 V
A31-8 (LIN3) - H67-3 (E1)	LIN communication signal	Ignition switch ON (READY)	Pulse generation
A31-14 (HMCL) - H67-3 (E1)	CAN communication signal	Ignition switch ON	Pulse generation (Waveform 1)

Oscilloscope waveforms

HINT:

Oscilloscope waveform samples are provided here for informational purposes. Noise and fluttering waveforms have been omitted.

Waveform 1 (CAN communication signal)

Item	Content
Terminal	CH1: A31-4 (HMCH) - H67-3 (E1) CH2: A31-14 (HMCL) - H67-3 (E1)
Equipment Setting	1 V/DIV., 50 μs./DIV.
Condition	Ignition switch ON

HINT:

The waveform will vary depending on the content of the digital communication (digital signal).