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BE/Body Electrical System — Integration Relay, page 28

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Integration Relay — MK3 Supra Body Electrical System, page 28
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Page text (OCR transcript)
BE-28

BODY ELECTRICAL SYSTEM — Lighting System

Test Bulb 3.4 W
12
11
10
9
3
BE0254

Test Bulb 3.4 W
12
11
10
9
3
BE0361

U.S.A.
OFF
1
2
3
4
BE3995
BE3994

CANADA
OFF
1
2
3
4
BE3916

Integration Relay

INSPECT INTEGRATION RELAY

INSPECT RELAY OPERATION (KEY ILLUMINATION)

(a) Connect the positive (+) lead from the battery to terminal 12 and the negative (—) lead to terminals 3, 9 and 10.

(b) Connect a 3.4W test bulb between terminals 11 and 12.

(c) Check that the bulb lights.

(d) Disconnect the negative (—) lead from the battery to terminals 9 and 10, and check that the bulb goes out 5 seconds later.

If operation is not as specified, replace the relay.

Light Control Rheostat

INSPECT RHEOSTAT

INSPECT RHEOSTAT OPERATION

(a) Connect the positive (+) lead from the battery to terminal 2 (U.S.A.) or 1 (CANADA) and the negative (—) lead to terminal 3 (U.S.A.) or 4 (CANADA).

(b) Gradually change the brightness of rheostat from minimum to maximum, to check that the voltage between terminals 1 and 3 increases from 0 to 12 V.

(c) Check that there is no voltage between terminals with the rheostat turned off.

If operation is not as specified, replace the rheostat.