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BE/Body Electrical System, page 52

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p.053
Body Electrical System — MK3 Supra Body Electrical System, page 52
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Page text (OCR transcript)
BE-52		BODY ELECTRICAL SYSTEM — Door Lock Control System

Check For	Tester Connection	Condition	Specified Value

Continuity	2 — Body ground	LH door opened	Continuity
		LH door closed	No continuity

Voltage	8 — Body ground		Battery voltage

	10 — Body ground	Turn the following switches, one by one to lock
• Control switch	• LH door key switch
• RH door key switch	Continuity

		Turn the following switches, one by one to except lock
• Control switch	• LH door key switch
• RH door key switch	No continuity

	14 — Body ground	RH door opened	Continuity
		RH door closed	No continuity

Continuity	6 — Body ground	LH door lock switch to unlock	Continuity
		LH door lock switch to lock	No continuity

	16 — Body ground		Continuity

	5 — Body ground	RH door lock switch to unlock	Continuity
		RH door lock switch to lock	No continuity

	7 — Body ground	Set the ignition key switch	Continuity
		Remove the ignition key switch	No continuity

	11 — Body ground	Turn the following switches, one by one to unlock
• Control switch	• LH door key switch
• RH door key switch	Continuity

		Turn the following switches, one by one to except unlock
• Control switch	• LH door key switch
• RH door key switch	No continuity

(b)	Connect the positive (+) lead from the battery to terminal 4 and the negative (—) lead to terminal 3. Check that the solenoids operate lock direction. Then, reverse the polarity, check that the solenoids operate unlock direction. If any of the solenoids does not operate, remove and test the solenoid.

If circuit operation is correct, replace the relay.

Door Lock Solenoid

INSPECTION OF DOOR LOCK SOLENOID

INSPECT SOLENOID OPERATION

(a)	Connect the positive (+) lead from the battery to terminal 3 and the negative (—) lead to terminal 4. Check that the solenoid operates in the unlock direction.

(b)	Check that there is continuity between terminals 1 and 2.