Terminals Of Ecu [09/2019 - 04/2020]
WARNING: This page is about a different car, the 2020 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK DCM (TELEMATICS TRANSCEIVER)
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition I72-1 (+B) - I72-20 (E) SB - W-B Power source (+B) Always 11 to 14 V I72-3 (SIG-) - I72-20 (E) L - W-B Ground Always Below 1 V I72-4 (IND1) - I72-20 (E) G - W-B Manual (SOS) switch red indicator illumination signal For 2 seconds after turning the engine switch on (IG) 1 to 8.5 V Engine switch off Below 1 V I72-5 (MCVD) - I72-20 (E) R - W-B Telephone microphone assembly power supply Engine switch on (ACC) 4 to 6 V Engine switch off Below 1 V I72-6 (MCI+) - I72-20 (E) B - W-B Receive microphone voice signal Voice being input to telephone microphone assembly A waveform synchronized with microphone voice signal is input I72-7 (MCI-) - I72-20 (E) W - W-B Receive microphone voice signal Always Below 1 V I72-13 (GSW) - I72-20 (E) W - W-B Collision detection signal Engine switch on (IG) Pulse generation (Refer to waveform1) I72-19 (IG2) - I72-20 (E) BR - W-B Power source (IG) Engine switch on (IG) 11 to 14 V Engine switch off Below 1 V I72-20 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω I72-21 (SIG1) - I72-3 (SIG-) L - G Manual (SOS) switch button condition signal Manual (SOS) switch not pressed 1.3 to 1.9 V Manual (SOS) switch pressed 0.5 to 0.8 V I72-22 (IND2) - I72-20 (E) GR - W-B Manual (SOS) switch green indicator illumination signal For 2 seconds after turning the engine switch on (IG) 1 to 8.5 V Engine switch off Below 1 V I72-23 (SGND) - I72-20 (E) Shielded - W-B Shield ground Always Below 1 Ω I72-25 (CANP) L CAN communication signal - - I72-26 (CANN) W CAN communication signal - - - CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY
w/o Navigation System: Refer to TERMINALS OF ECU [09/2019 - 04/2020]
w/ Navigation System: Refer to TERMINALS OF ECU [09/2019 - 04/2020]