Clock Terminals Of Ecu

Body Electrical. Lexus Is250, Is220D. Gse20 Ale20
Other System. Lexus Is250, Is220D. Gse20 Ale20

  1. Clock Assembly (without Navigation System)

  1. Clock Assembly (with Navigation System)

Clock -- Terminals Of Ecu



Clock Assembly (without Navigation System)

Lexus Is250, Is220D. Gse20 Ale20.Other System.Clock.Clock Terminals Of Ecu


Symbols (Terminal No.)
Wiring Color
Terminal Description
Condition
Specified Condition
ILL+ (J54-3) - Body ground
G - Body ground
Illumination Signal
Combination switch OFF
Below 1 V
Combination switch Head
10 to 14 V
IG+ (J54-4) - Body ground
B - Body ground
Ignition Switch Signal
Engine switch off
Below 1 V
Engine switch on (IG)
10 to 14 V
ACC (J54-5) - Body ground
O - Body ground
Ignition Switch Signal
Engine switch off
Below 1 V
Engine switch on (IG)
10 to 14 V
E (J54-8) - Body ground
W-B - Body ground
Ground
Always
Below 1 V
ILL-(J54-10) - Body ground
LG - Body ground
Illumination Signal
Engine switch on (IG), combination switch Head, and light control rheostat position MAX.
Pulse generation
(See waveform)
B (J54-14) - Body ground
LG - Body ground
Battery
Always
10 to 14 V


    Lexus Is250, Is220D. Gse20 Ale20.Other System.Clock.Clock Terminals Of Ecu

  1. Waveform (Reference) : Using an oscilloscope:

    OK:
    Item
    		Condition
    Tool setting
    		5 V/DIV., 200 ms./DIV.
    Vehicle condition
    		Engine switch on (IG), light control rheostat is in the MID. position.

Clock Assembly (with Navigation System)

Lexus Is250, Is220D. Gse20 Ale20.Other System.Clock.Clock Terminals Of Ecu


Symbols (Terminal No.)
Wiring Color
Terminal Description
Condition
Specified Condition
E (J53-2) - Body ground
W-B - Body ground
Ground
Always
Below 1 V
ILL+ (J53-4) - Body ground
G - Body ground
Illumination Signal
Combination switch OFF
Below 1 V
Combination switch Head
10 to 14 V
ACC (J53-5) - Body ground
W-B - Body ground
Ignition Switch Signal
Engine switch off
Below 1 V
Engine switch on (IG)
10 to 14 V
+B (J53-6) - Body ground
BR - Body ground
Battery
Always
10 to 14 V
ILL-(J53-10) - Body ground
W - Body ground
Illumination Signal
Engine switch on (IG), combination switch Head, and light control rheostat position MAX.
Pulse generation
(See waveform)
IG (J53-11) - Body ground
B - Body ground
Ignition Switch Signal
Engine switch off
Below 1 V
Engine switch on (IG)
10 to 14 V


    Lexus Is250, Is220D. Gse20 Ale20.Other System.Clock.Clock Terminals Of Ecu

  1. Waveform (Reference) : Using an oscilloscope:

    OK:
    Item
    		Condition
    Tool setting
    		5 V/DIV., 200 ms./DIV.
    Vehicle condition
    		Engine switch on (IG), light control rheostat is in the MID. position.