TSRM/MK2 Supra/Repair Manual
Repair ManualWiring Diagrams
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BE/Body Electrical System — Door Lock Control System, page 67

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p.068
Door Lock Control System — MK2 Supra Body Electrical System, page 67
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Page text (OCR transcript)
DOOR LOCK CONTROL SYSTEM
Door Lock Control Switch
INSPECTION OF DOOR LOCK CONTROL
SWITCH

INSPECT SWITCH CONTINUITY

Switch
position     Terminal     8     6     4
LOCK                      O-----O
OFF
UNLOCK                         O-----O

If continuity is not as specified, replace the switch.

Key Unlock Switch
INSPECTION OF KEY UNLOCK SWITCH
INSPECT SWITCH OPERATION
(a) Check that there is continuity between terminals when
    the switch pin is pushed.
(b) Check that there is no continuity between terminals
    when the switch is free.
If operation is not as specified, replace the switch.

Door Lock Relay
INSPECTION OF DOOR LOCK RELAY
1.  INSPECT RELAY CONTINUITY
    (a) Check that there is continuity between terminals 2, 3
        and 4.
    (b) Check that there is no continuity between terminals
        1, 2 and 6.
    If continuity is not as specified, replace the relay.

2.  INSPECT RELAY OPERATION
    (a) Connect the positive (+) lead from the battery to
        terminal 2. Connect the negative (-) lead to terminals
        3 and 4.
    (b) Check that there is continuity between terminals 1
        and 4.
        Check that there is continuity between terminals 3
        and 6.
    If there is no continuity, replace the relay.