99
VOLTAGE IS ALWAYS APPLIED FROM THE MAIN FUSE, THROUGH THE HEADLIGHT RELAY (COIL SIDE) TO TERMINAL 5 OF THE
DAYTIME RUNNING LIGHT RELAY (MAIN), TERMINAL 6 OF INTEGRATION RELAY, TERMINAL 14 OF DIMMER SW, DIMMER RELAY
(DAYTIME RUNNING LIGHT RELAY NO. 2) (COIL SIDE), TO TERMINAL 17 OF THE DAYTIME RUNNING LIGHT RELAY (MAIN). WHEN THE
IGNITION SW IS TURNED ON, VOLTAGE FROM THE GAUGE FUSE IS APPLIED TO TERMINAL 2 OF THE DAYTIME RUNNING LIGHT
RELAY (MAIN).
1. DAYTIME RUNNING LIGHT OPERATION
WHEN THE ENGINE STARTS, VOLTAGE FROM TERMINAL ªLº OF THE GENERATOR (ALTERNATOR) IS APPLIED TO TERMINAL 11 OF
THE DAYTIME RUNNING LIGHT RELAY (MAIN). IF THE PARKING BRAKE LEVER IS PULLED UP (PARKING BRAKE SW ON) AT THIS
TIME, THE DAYTIME RUNNING LIGHT SYSTEM DOES NOT OPERATE. WHEN THE PARKING BRAKE IS RELEASED (PARKING BRAKE
SW OFF), A SIGNAL IS OUTPUT FROM TERMINAL 1 OF THE PARKING BRAKE SW TO TERMINAL 8 OF THE DAYTIME RUNNING LIGHT
RELAY (MAIN). THIS ACTIVATES THE DAYTIME RUNNING LIGHT RELAY (MAIN), TURNING ON THE DIMMER RELAY (DAYTIME
RUNNING LIGHT RELAY NO. 2). CURRENT ALSO FLOWS FROM THE MAIN FUSE TO DIMMER RELAY (DAYTIME RUNNING LIGHT
RELAY NO. 2) (POINT SIDE) " HEAD (LH±UPR) FUSE " HEADLIGHT HI LH " HEADLIGHT HI RH " TERMINAL (A)5 OF DAYTIME
RUNNING LIGHT RELAY NO. 3 " TERMINAL (A)3 " GROUND, CAUSING THE HEADLIGHTS TO LIGHT UP AT APPROX. 20 % OF THEIR
NORMAL BRIGHTNESS.
ONCE THE DAYTIME RUNNING LIGHT RELAY (MAIN) HAS BEEN ACTIVATED AND THE HEADLIGHTS LIGHT UP, THE HEADLIGHTS
REMAIN ON EVEN IF THE PARKING BRAKE LEVER IS ENGAGED AGAIN (PARKING BRAKE SW ON).
2. HEADLIGHT OPERATION
WHEN THE LIGHT CONTROL SW IS AT HEAD POSITION AND THE DIMMER SW AT LOW POSITION, CURRENT FLOWS FROM THE
HEADLIGHT RELAY (COIL SIDE) TO TERMINAL 6 OF THE INTEGRATION RELAY " TERMINAL 7 " TERMINAL 13 OF LIGHT CONTROL
SW " TERMINAL 11 " GROUND, ACTIVATING THE HEADLIGHT RELAY.
THIS CAUSES CURRENT TO FLOW FROM THE HEADLIGHT RELAY (POINT SIDE) TO THE HEAD LWR FUSE " HEADLIGHT LO "
GROUND, CAUSING THE HEADLIGHTS TO LIGHT UP AT NORMAL BRIGHTNESS. SIMULTANEOUSLY, CURRENT FLOWS FROM THE
DRL FUSE " DAYTIME RUNNING LIGHT RELAY NO. 3 (COIL SIDE) " GROUND, ACTIVATING RELAY NO. 3.
WHEN THE DIMMER SW IS AT HIGH POSITION, TERMINAL 12 OF THE DIMMER SW OUTPUTS A SIGNAL TO TERMINAL 16 OF THE
DAYTIME RUNNING LIGHT RELAY (MAIN) TO ACTIVATE IT. THIS TURNS ON DIMMER RELAY (DAYTIME RUNNING LIGHT RELAY NO. 2).
SO CURRENT FLOWS FROM DIMMER RELAY (DAYTIME RUNNING LIGHT RELAY NO. 2) (POINT SIDE) TO THE HEAD (LH±UPR) FUSE
" HEADLIGHT HI LH " DAYTIME RUNNING LIGHT RELAY NO. 3 (POINT SIDE) " GROUND, AND FROM THE HEAD (RH±UPR) FUSE "
DAYTIME RUNNING LIGHT RELAY NO. 3 (POINT SIDE) " HEADLIGHT HI RH " DAYTIME RUNNING LIGHT RELAY NO. 3 (POINT SIDE)
" GROUND, CAUSING THE HEADLIGHTS TO OPERATE AT HI.
WHEN THE DIMMER SW IS AT FLASH POSITION, CURRENT FROM THE HEADLIGHT RELAY (COIL SIDE) FLOWS TO TERMINAL 14 OF
THE DIMMER SW " TERMINAL 9 " GROUND, ACTIVATING THE RELAY. SIMULTANEOUSLY, CURRENT FROM THE HEADLIGHT RELAY
(POINT SIDE) FLOWS TO HEADLIGHT LO, LIGHTING UP HEADLIGHT LO AND ACTIVATING DAYTIME RUNNING LIGHT RELAY NO. 3.
THEN TERMINAL 12 OF THE DIMMER SW OUTPUTS A SIGNAL TO TERMINAL 16 OF THE DAYTIME RUNNING LIGHT RELAY (MAIN),
ACTIVATING THE DAYTIME RUNNING LIGHT RELAY (MAIN) SO THAT CURRENT FLOWS TO HEADLIGHT HI LIKE IT DOES FOR HIGH
POSITION. THIS CAUSES ALL HEADLIGHTS TO LIGHT UP.
D 6 DAYTIME RUNNING LIGHT RELAY (MAIN)
15±GROUND : ALWAYS APPROX. 12 VOLTS
2±GROUND : APPROX. 12 VOLTS WITH THE IGNITION SW AT ON POSITION
13±GROUND : ALWAYS CONTINUOUS
5±GROUND : APPROX. 12 VOLTS WITH THE DAYTIME RUNNING LIGHT SYSTEM
DOES NOT OPERATE OR LIGHT CONTROL SW AT OFF OR TAIL POSITION
(WITH THE CONNECTOR IS DISCONNECTED, ALWAYS APPROX. 12 VOLTS)
8±GROUND : CONTINUOUS WITH THE PARKING BRAKE LEVER RELEASED
SYSTEM OUTLINE
SERVICE HINTS
221
*1 : USA
*
2 : CANADA*3 : 2JZ±GTE
*
4:2JZ±GE
10A
PANEL
1I 3
II1 7 II136 II11II118 II117 II127
C 4C10 C6C7C8C11
A 1C13 B7B5B4A14 B2B1
I2 I2I14
A A
EB IH EC 2 1 1II1 33
II1 34
2 1
IB2 14 IF1 15
D6
P5J1
E7
BRAKE FLUID LEVEL
WARNING SW
DIODE
ENGINE OIL
LEVEL SENSOR
JUNCTION
CONNECTORPARKING BRAKE
SW
DAYTIME RUNNING
LIGHT RELAY
(
MAIN)
OIL
PKBDELAYCOMBINATION METER FROM POWER SOURCE SYSTEM(
SEE PAGE 56)
GR
R±B
L
G± R
LG±R
G±B G±B LG±RG±RL R±BGR BR±W
W±B
W±B
G
L±W
Y±G
R±Y
R±G Y±GG BR W±B W±BBR±W BR±W B±W
BR±W
BR±W R±W W±B
Y±G (
*3)
L±WR±Y
Y±G R±G
BR±W BR±W B±W(
*2 *3) B±W(
*2)G±OG±O
BRAKE
P
R
N
D
2
L
MASTER (
*1) (
*2)
(
*1)
(
*4)
(
*4) (
*1 *3)
(
*2)
TO GENE RATOR
(
ALTERNATOR)
FROM A/T INDICATOR LIGHT SW
[PARK/NEUTRAL POSITION SW
(
NEUTRAL START SW)
]
12
18
8
B2
C C10 , C11 , C 1 2BA
44
R±W
(
*3)
W±B
A
