Terminals Of Ecu
- CHECK MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- Disconnect the 2A, 2B, 2C, 2E and C45 main body ECU (instrument panel junction block) connectors.
- Measure the resistance and voltage according to the value(s) in the table below.RESISTANCE AND VOLTAGE SPECIFICATION
Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition 2E-17 (GND1) - Body ground W-B - Body ground Ground Always Below 1 Ω 2B-30 (BECU) - Body ground W - Body ground Power source Always 11 to 14 V 2A-21 (DCTY) - Body ground W- Body ground Front door courtesy light switch LH signal Switch pushed (Door closed) 10 kΩ or higher 2A-21 (DCTY) - Body ground W- Body ground Front door courtesy light switch LH signal Switch not pushed (Door open) Below 1 Ω 2E-23 (KSW) - Body ground L - Body ground Key unlock warning switch signal No key is in ignition key cylinder 10 kΩ or higher 2E-23 (KSW) - Body ground L - Body ground Key unlock warning switch signal Key is in ignition key cylinder Below 1 Ω C45-23 (CANH) - C45-22 (CANL) R-W CAN communication line Ignition switch OFF 54 to 69 Ω C45-23 (CANH) - 2E-17 (GND1) R-W-B CAN communication line Ignition switch OFF 200 Ω or higher C45-22 (CANL) - 2E-17 (GND1) W-W-B CAN communication line Ignition switch OFF 200 Ω or higher HINT:
If the result is not as specified, the ECU may have a malfunction.