Combustion Type Power Heater System Terminals Of Ecu

Heater & Air Conditioning System. Lexus Is250, Is220D. Gse20 Ale20
Heater. Lexus Is250, Is220D. Gse20 Ale20

  1. POWER HEATER ECU (COMBUSTION HEATER ASSEMBLY)

Combustion Type Power Heater System -- Terminals Of Ecu



POWER HEATER ECU (COMBUSTION HEATER ASSEMBLY)

Lexus Is250, Is220D. Gse20 Ale20.Heater.Combustion Type Power Heater System.Combustion Type Power Heater System Terminals Of Ecu


Standard:

Tester No.
(Symbols)
Wiring Color
Condition
Specified Condition
A51-1 (E) - Body ground
W-B - Body ground
Always
Below 1 V
A51-2 (L) - Body ground
L - Body ground
Engine switch: on (IG)
Power heater switch: ON
Pulse generation
(See waveform 1)
A51-3 (IG) - Body ground
L-W - Body ground
Engine switch: on (IG)
Power heater switch: ON
10 to 14 V
A51-5 (B) - Body ground
B - Body ground
Always
10 to 14 V
A51-8 (+) - Body ground
B - Body ground
Engine is running.
(Alternator: Operate)
10 to 14 V


    Lexus Is250, Is220D. Gse20 Ale20.Heater.Combustion Type Power Heater System.Combustion Type Power Heater System Terminals Of Ecu

  1. Waveform 1:

    Item
    		Contents
    Terminal No.
    (Symbols)
    		A51-2 (L) - Body ground
    Tool Setting
    		2 V/DIV., 20 ms/DIV.
    Vehicle Condition
    		Engine switch: on (IG)
    Power heater switch: ON