Terminals Of Ecu
WARNING: This page is about a different car, the 2012 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)
- Disconnect the 2A, 2B, 2C, 2E, 2F and 2G junction block connectors and E61 main body ECU connector.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- Measure the resistance and voltage between each terminal of the wire harness side connectors and body ground.
Tester Connection Wiring Color Terminal Description Condition Specified Condition 2A-7 (LGCY) - Body ground LG - Body ground Luggage compartment door courtesy light switch input Luggage compartment door CLOSED (OFF) → OPEN (ON) 10 kΩ or higher → Below 1 Ω 2E-20 (PCTY) - Body ground BR - Body ground*1
BE - Body ground*2Passenger side door courtesy light switch input Passenger side door CLOSED (OFF) → OPEN (ON) 10 kΩ or higher → Below 1 Ω 2B-30 (BECU) - Body ground W - Body ground +B power supply Always 11 to 14 V 2A-21 (DCTY) - Body ground BR - Body ground*1
R - Body ground*2Driver side door courtesy light switch input Driver side door CLOSED (OFF) → OPEN (ON) 10 kΩ or higher → Below 1 Ω 2E-17 (GND1) - Body ground W-B - Body ground Ground Always Below 1 Ω 2E-19 (RCTY) - Body ground LG - Body ground*1
Y - Body ground*2Rear courtesy light switch RH input Rear door RH CLOSED (OFF) → OPEN (ON) 10 kΩ or higher → Below 1 Ω 2E-23 (KSW) - Body ground L - Body ground Unlock warning switch input No key in ignition key cylinder (OFF) → Key inserted (ON) 10 kΩ or higher → Below 1 Ω 2F-5 (ACC) - Body ground W - Body ground*1
L - Body ground*2Ignition power supply (ACC signal) Ignition switch ACC → off 11 to 14 V → Below 1 V 2G-1 (IG) - Body ground W - Body ground Ignition power supply (IG signal) Ignition switch ON → off 11 to 14 V → Below 1 V 2G-1 (ALTB) - Body ground W - Body ground +B (power system alternator system) power supply Always 11 to 14 V E61-13 (LCTY) - Body ground SB - Body ground*1
B - Body ground*2Rear courtesy light switch LH input Rear door LH CLOSED (OFF) → OPEN (ON) 10 kΩ or higher → Below 1 Ω If the result is not as specified, there may be a malfunction on the wire harness side.
- *1: for TMC Made
- *2: Except for TMC made
- Reconnect the main body ECU and instrument panel junction block connectors.
- Measure the voltage between each terminal of the wire harness side connectors and body ground.
Tester Connection Wiring Color Terminal Description Condition Specified Condition 2S-17 (HAZ) - Body ground GR - Body ground Turn signal flasher relay signal Transmitter LOCK or UNLOCK switch is pressed → not pressed Below 1 V* → 11 to 14 V - *: When operating the answer back function.
- Disconnect the 2A, 2B, 2C, 2E, 2F and 2G junction block connectors and E61 main body ECU connector.