ECM terminal arrangement
- Instrument panel junction block assembly, main body ECM (Network gateway computer).
Courtesy of SUBARU OF AMERICA, INC.
- 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 instrument panel junction block assembly from the main body ECM (Network gateway computer).
- 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
- Measure the voltage and resistance between terminals.