ECM terminal arrangement
- Instrument panel junction block ASSY, main body ECM (Network gateway computer).
- Measure the voltage and resistance between terminals.NOTE: This inspection is performed from the back side of the connector with the connector in a connected state.
Terminal No. (Terminal code) Input/Output Item Measuring condition Criteria 3A-15 ←→chassis ground Input Voltage IG ON 11 to 14V 3A-20 ←→chassis ground Input Voltage IG ON 11 to 14V 3A-27 ←→chassis ground Input Voltage Always 11 to 14V 3C-19 ←→chassis ground Input Voltage Always 11 to 14V 3E-1 ←→chassis ground Input Voltage Always 11 to 14V 3A-12 ←→chassis ground - Resistance Always Less than 1 Ω 3A-13 ←→chassis ground - Resistance Always Less than 1 Ω 3B-18 ←→chassis ground - Resistance Always Less than 1 Ω D6-1 (GND) ←→chassis ground - Resistance Always Less than 1 Ω A73-4 (GND) ←→chassis ground - Resistance Always Less than 1 Ω - Remove the main body ECM (network gateway computer) from the instrument panel junction block ASSY.
- Measure the voltage and resistance between terminals.
Terminal No. (Terminal code) Input/Output Item Measuring condition Criteria MB-1 (BECU) ←→chassis ground Input Voltage Always 11 to 14V MB-8 (IG) ←→chassis ground Input Voltage IG ON 11 to 14V MB-9 (ACC) ←→chassis ground Input Voltage ACC ON 11 to 14V MB-32 (BMPX) ←→chassis ground Input Voltage Always 11 to 14V MB-11 (GND) ←→chassis ground - Resistance Always Less than 1 Ω