LATO/Light Auto Turn Off — System Outline, page 2

SYSTEM OUTLINE

WITH THE IGNITION SW TURNED ON, THE CURRENT FLOWS TO TERMINAL 7 OF THE INTEGRATION RELAY THROUGH GAUGE FUSE.

VOLTAGE IS APPLIED AT ALL TIMES TO TERMINAL (A) 5 OF THE INTEGRATION RELAY THROUGH THE TAILLIGHT RELAY COIL, AND TO TERMINAL (A) 6 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 (A) 4 OF THE INTEGRATION RELAY. DUE TO THIS SIGNAL, THE CURRENT FLOWING TO TERMINAL (A) 5 OF THE RELAY FLOWS TO TERMINAL (A) 4 → TERMINAL 2 OF THE LIGHT CONTROL SW → TERMINAL 11 → TO GROUND, AND TAILLIGHT RELAY CAUSES TAILLIGHTS TO TURN ON.

(TURN HEADLIGHT ON)

WITH LIGHT CONTROL SW TURNED TO HEAD POSITION, A SIGNAL IS INPUT INTO TERMINAL (A) 4 AND (A) 7 OF THE INTEGRATION RELAY. DUE TO THIS SIGNAL, THE CURRENT FLOWING TO TERMINAL (A) 6 OF THE RELAY FLOWS TO TERMINAL (A) 7 → TERMINAL 13 OF THE LIGHT CONTROL SW → TERMINAL 11 → TO GROUND IN THE HEADLIGHT CIRCUIT, AND CAUSES TAILLIGHT AND HEADLIGHT RELAY TO TURN THE LIGHTS ON. THE TAILLIGHT CIRCUIT IS SAME AS ABOVE.

2. LIGHT AUTO TURN OFF OPERATION

WITH LIGHT ON AND THE IGNITION SW TURNED OFF (INPUT SIGNAL GOES TO TERMINAL 7 OF THE RELAY), WHEN THE DRIVER'S DOOR IS OPENED (INPUT SIGNAL GOES TO TERMINAL 6 OF THE RELAY), THE RELAY OPERATES AND THE CURRENT IS CUT OFF WHICH FLOWS FROM TERMINAL (A) 5 OF THE RELAY TO TERMINAL (A) 4 IN TAILLIGHT CIRCUIT AND FROM TERMINAL (A) 6 TO TERMINAL (A) 7 IN HEADLIGHT CIRCUIT.

AS A RESULT, ALL LIGHTS ARE TURNED OFF AUTOMATICALLY.

SERVICE HINTS

HEADLIGHT RELAY
2 1– : CLOSED WITH LIGHT CONTROL SW AT HEAD POSITION OR DIMMER SW AT FLASH POSITION (FOR USA)
      : CLOSED WITH ENGINE RUNNING AND PARKING BRAKE LEVER RELEASED (FOR CANADA)

TAILLIGHT RELAY
3–5 : CLOSED WITH LIGHT CONTROL SW AT TAIL OR HEAD POSITION

D10 DOOR COURTESY SW LH
3–2 : CLOSED WITH LH DOOR OPEN

I20(A) INTEGRATION RELAY
7–GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION
6–GROUND : CONTINUOUS WITH LH DOOR OPEN
1–GROUND : ALWAYS APPROX. 12 VOLTS
(A) 5–GROUND : ALWAYS APPROX. 12 VOLTS
(A) 6–GROUND : ALWAYS APPROX. 12 VOLTS
(A) 7–GROUND : CONTINUOUS WITH LIGHT CONTROL SW AT HEAD POSITION
(A) 4–GROUND : CONTINUOUS WITH LIGHT CONTROL SW AT TAIL OR HEAD POSITION

: PARTS LOCATION

CODE    SEE PAGE    CODE    SEE PAGE    CODE    SEE PAGE
C13     28          D10     30          I20     A    29

: RELAY BLOCKS

CODE    SEE PAGE    RELAY BLOCKS (RELAY BLOCK LOCATION)
2       22          R/B NO. 2 (ENGINE COMPARTMENT LEFT)

: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR

CODE    SEE PAGE    JUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1B      20          ENGINE ROOM MAIN WIRE AND J/B NO. 1 (LEFT KICK PANEL)
1I
1J      20          COWL WIRE AND J/B NO. 1 (LEFT KICK PANEL)
1K
2A      22          BATTERY AND J/B NO. 2 (ENGINE COMPARTMENT LEFT)