Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota 4Runner 1990-1995 Approved FSM toyewpdf vfewdsou 1995 954runne systemci lato

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                                                                            LIGHT AUTO TURN OFF
      SYSTEM OUTLINE
WITH THE IGNITION SW TURNED ON, THE CURRENT FLOWS TO TERMINAL 1 OF THE HEADLIGHT AUTO CUT ECU THROUGH
GAUGE FUSE.
VOLTAGE IS APPLIED AT ALL TIMES TO TERMINAL 8 OF THE HEADLIGHT AUTO CUT ECU THROUGH THE TAILLIGHT RELAY COIL,
AND TO TERMINAL 7 THROUGH THE HEADLIGHT RELAY COIL.

1. NORMAL LIGHTING OPERATION
< TURN TAILLIGHT ON >
WITH LIGHT CONTROL SW TURNED TO TAIL POSITION, A SIGNAL IS INPUT INTO TERMINAL 2 OF THE HEADLIGHT AUTO CUT ECU.
DUE TO THIS SIGNAL, THE CURRENT FLOWING TO TERMINAL 8 OF THE ECU FLOWS TO TERMINAL 2  TERMINAL 11 OF THE LIGHT
CONTROL SW  TERMINAL 10  TO GROUND AND TAILLIGHT RELAY CAUSES TAILLIGHT TO TURN ON.
< TURN HEADLIGHT ON >
WITH LIGHT CONTROL SW TURNED TO HEAD POSITION, A SIGNAL IS INPUT INTO TERMINALS 2 AND 3 OF THE HEADLIGHT AUTO
CUT ECU. DUE TO THIS SIGNAL, THE CURRENT FLOWING TO TERMINAL 7 OF THE ECU FLOWS TO TERMINAL 3  TERMINAL 4 OF
THE LIGHT CONTROL SW  TERMINAL 10  TO GROUND IN THE HEADLIGHT CIRCUIT, AND CAUSES TAILLIGHT AND HEADLIGHT
RELAY TO TURN THE LIGHT ON. THE TAILLIGHT CIRCUIT IS SAME AS ABOVE.

2. LIGHT AUTO TURN OFF OPERATION
WITH LIGHT ON AND IGNITION SW TURNED OFF (INPUT SIGNAL GOES TO TERMINAL 1 OF THE ECU), WHEN THE DRIVER'S DOOR IS
OPENED (INPUT SIGNAL GOES TO TERMINAL 5 OF THE ECU), THE ECU OPERATES AND THE CURRENT IS CUT OFF WHICH FLOWS
FROM TERMINAL 8 OF THE ECU TO TERMINAL 2 IN TAILLIGHT CIRCUIT AND FROM TERMINAL 7 TO TERMINAL 3 IN HEADLIGHT
CIRCUIT.
AS A RESULT, ALL LIGHTS ARE TURNED OFF AUTOMATICALLY.




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LIGHT AUTO TURN OFF                                                                                                                                                                                    *1 : 22R

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