Terminals Of Ecu
- CHECK A/C CONTROL ASSY (A/C ECU)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- Disconnect the A11 ECU connector.
- Measure the voltage and resistance of the wire harness side connector.
Standard:
A/C CONTROL ASSY - REFERENCE TABLE (DISCONNECTED)Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition GND (A11-1) - Body ground W-B - Body ground Ground Always Below 1 Ω IG (A11-9) - Body ground LG-R - Body ground Ignition power supply Ignition switch turned OFF -> ON Below 1 V -> 10 to 14 V +B (A11-21) - Body ground B-Y - Body ground Battery power supply Always 10 to 14 V If the result is not as specified, there may be a malfunction on the wire harness side.
- Reconnect the A11 ECU connector.
- Measure the voltage of the connector.
Standard:
A/C CONTROL ASSY - REFERENCE TABLE (RECONNECTED)Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition RDFGR (A11-8) - GND (A11-1) W - W-B DEFOG relay Ignition switch ON, Rear defogger switch to OFF -> ON 10 to 14 V -> Below 1 V IG (A11-9) - GND (A11-1) LG-R - W-B Ignition power supply Ignition switch turned OFF -> ON Below 1 V -> 10 to 14 V +B (A11-21) - GND (A11-1) B-Y - W-B Battery power supply Always 10 to 14 V If the result is not as specified, the ECU may have a malfunction.