1997 TOYOTA SUPRA warning light

B 4
B 8
B 6
B 4 B 7
B 3
BI BJ18
IE1 5
1 2
1 2FROM POWER SOURCE SYSTEM (
SEE PAGE 56)
G G
G W- B
W- B
G
Y
V V LG LG
LG W- B
W- B
W- B W- B
G
W- BW- B
W- B
55 11 L 2
REAR LIGHT
WARNING LIGHT
[ TEL LT ALE
LIGHT RH] T 6 TA
[RREAR SIDE
MAR KER LI GH T
LH R11
W- B
Y
G
B 4
B 5
W- B
W- B
W- B W- B
W- B
10A
GAUGE
1C 21E12
ILLIGHT
EAR COMB. LIGHT]
RH LH R 9 R10
DELAY
CIRCUIT
-
+
911 384LIGHT FAILURE SENSOR
1
RH R12
103

104
TAILLIGHT
WHEN THE LIGHT CONTROL SW IS TURNED TO TAIL OR HEAD POSITION. THE CURRENT FLOWS TO TERMINAL 3
OF THE LIGHT FAILURE SENSOR THROUGH THE TAIL FUSE.
WHEN THE IGNITION SW IS TURNED ON, THE CURRENT FLOWS FROM THE GAUGE FUSE TO TERMINAL 8 OF THE
LIGHT FAILURE SENSOR, AND ALSO FLOWS THROUGH THE REAR LIGHT WARNING LIGHT TO TERMINAL 4 OF THE
LIGHT FAILURE SENSOR.
TAILLIGHT DISCONNECTION WARNING
WITH THE IGNITION SW ON AND THE LIGHT CONTROL SW TURNED TO TAIL OR HEAD POSITION, IF THE TAILLIGHT
CIRCUIT IS OPEN, THE LIGHT FAILURE SENSOR DETECTS THE FAILURE BY THE CHANGE IN CURRENT FLOWING
FROM TERMINAL 3 OF THE LIGHT FAILURE SENSOR TO TERMINAL 9, AND THE WARNING CIRCUIT OF THE LIGHT
FAILURE SENSOR IS ACTIVATED.
AS A RESULT, THE CURRENT FLOWS FROM TERMINAL 4 OF THE LIGHT FAILURE SENSOR " TERMINAL 11 "
GROUND AND TURNS THE REAR LIGHT WARNING LIGHT ON, WHICH REMAINS ON UNTIL THE LIGHT CONTROL SW
IS TURNED OFF.
TAILLIGHT RELAY
5-3 : CLOSED WITH THE LIGHT CONTROL SW AT TAIL OR HEAD POSITION
L2 LIGHT FAILURE SENSOR
4,8-GROUND : APPROX. 12 VOLTS WITH THE IGNITION SW AT ON POSITION
3-GROUND : APPROX. 12 VOLTS WITH THE LIGHT CONTROL SW AT TAIL OR HEAD POSITION
11-GROUND : ALWAYS CONTINUITY
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
C1328F826 (2JZ-GE)R930
F524 (2JZ-GTE)I2029R1030F526 (2JZ-GE)L130R1130
F624 (2JZ-GTE)L230R1230F626 (2JZ-GE)P1324 (2JZ-GTE)T629
F824 (2JZ-GTE)P1326 (2JZ-GE)
: RELAY BLOCKS
CODESEE PAGERELAY BLOCKS (RELAY BLOCK LOCATION)
222R/B NO. 2 (ENGINE COMPARTMENT LEFT)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1A20ENGINE ROOM MAIN WIRE AND J/B NO 1 (LEFT KICK PANEL)1B20ENGINE ROOM MAIN WIRE AND J/B NO. 1 (LEFT KICK PANEL)
1C20FLOOR NO. 2 WIRE AND J/B NO. 1 (LEFT KICK PANEL)
1E20INSTRUMENT PANEL WIRE AND J/B NO. 1
1J20COWL WIRE AND J/B NO 1 (LEFT KICK PANEL)1K20COWL WIRE AND J/B NO. 1 (LEFT KICK PANEL)
2A22BATTERY AND J/B NO. 2 (ENGINE COMPARTMENT LEFT)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
IE136INSTRUMENT PANEL WIRE AND FLOOR NO. 2 WIRE (LEFT KICK PANEL)
SYSTEM OUTLINE
SERVICE HINTS

111
TURN SIGNAL AND HAZARD WARNING LIGHT

15A
HA Z- HORN
5 6
5 1 2
2 1 I 3
I 3
I 2
B 4
IE EB BI EA BJ IHA A 2
4 44IF1 12IF1 17
B 6 A
B 7 IF1 4IB1 3
W W W
G- R W- R
R- B
G- B
G- Y R- B
G- B G- B W- BG- B W- B W- B
W- B
W- B W- B
W- B W- BR- B
G- B
G- Y
G- Y
G- Y
G- B
R- B
G- Y
G- B
G- Y
G- B
W- B G- Y
G- YW- B
W- B R- B W- RW- B
9 756 158
3 21FROM POWER SOURCE SYSTEM (
SEE PAGE 56)
810 2
15 HAZARD SW H10C13
TURN SIGNAL
FLASHER
FRONT TURN SIGNAL
LIGHT LH F 7
FRONT TURN SIGNAL
LIGHT RH F 8 REAR TURN S IGNAL
LIGHT LH
[REAR COMB. LIGHT LH] R 9
REAR TURN S IGNAL
LIGHT RH
[REAR COMB. LIGHT RH] R10TURN SIGNAL
INDICATOR LIGHT
[COMB. METER]
JUNCTION
CONNECTOR J 1 LH TURN RH BL
E
E 2 : 2JZ- GTE
E18 : 2JZ- GEE 2 : 2JZ- GTE
E18 : 2JZ- GEA C10 , C12
B 1
1C 41H11
1A71E 191C 31H7
1A41E 14
7. 5A
TURN
1E 7
6
TURN L H
RHTB TL TR TURN SIGNAL SW [COMB. SW]HAZARD OFF
ONF TBB2TLB1TR
11 2
TURN SIGNAL AND HAZARD WARNING LIGHT

1 2
18
B 4
B 6BM1 1
BO1 6
BIBJBO1 3
BM1 2 STEM (
SEE PAGE
IE1 5
W G- W G- W G- W
Y
V V R- W R- W
R- W W- B
W- B
W- B W-B G-W G-W G-W
R- W G- W
W- B
W- BY
55 2111 4 8 7
2
33
W- B STOP LIGHT SW S11
REAR LIGHT WARNING LIGHT
[TELLTALE LIGHT RH] T 6
LIGHT FAILURE SENSOR L 2
STOP LIGHT LH
[RE AR COMB.
LIGHT LH] R 9
STOP LIGHT RH
[REAR COMB
LIGHT RH] R10HIGH MOUNTED
STOP LIGHT H14
B 4 B 6W- B
W- BY W- B
B10
BK W- B
W- BW- B
10A
GAUGE
1C 2 56)
1E 1215A
STOP
1I 10FROM POWER SOURCE SY
1C 101H 1
+
-
HOLD
CIRCUI T
1
11 4
STOP LIGHT

11 5
CURRENT IS APPLIED AT ALL TIMES THROUGH THE STOP FUSE TO TERMINAL 2 OF THE STOP LIGHT SW.
WHEN THE IGNITION SW IS TURNED ON, CURRENT FLOWS FROM THE GAUGE FUSE TO TERMINAL 8 OF THE LIGHT FAILURE
SENSOR, AND ALSO FLOWS THROUGH THE REAR LIGHT WARNING LIGHT TO TERMINAL 4 OF THE LIGHT FAILURE SENSOR.
STOP LIGHT DISCONNECTION WARNING
WHEN THE IGNITION SW IS TURNED ON AND THE BRAKE PEDAL IS PRESSED (STOP LIGHT SW ON), IF THE
STOP LIGHT CIRCUIT IS OPEN, THE CURRENT FLOWING FROM TERMINAL 7 OF THE LIGHT FAILURE SENSOR
TO TERMINAL 2 CHANGES, SO THE LIGHT FAILURE SENSOR DETECTS THE DISCONNECTION AND THE
WARNING CIRCUIT OF THE LIGHT FAILURE SENSOR IS ACTIVATED.
AS A RESULT, THE CURRENT FLOWS FROM TERMINAL 4 OF THE LIGHT FAILURE SENSOR " TERMINAL 11 "
GROUND AND TURNS THE REAR LIGHT WARNING LIGHT ON. BY PRESSING THE BRAKE PEDAL, THE CURRENT
FLOWING TO TERMINAL 8 OF THE LIGHT FAILURE SENSOR KEEPS THE WARNING CIRCUIT ON HOLDING AND
THE WARNING LIGHT ON UNTIL THE IGNITION SW IS TURNED OFF.
S11 STOP LIGHT SW
2-1 :CLOSED WITH THE BRAKE PEDAL DEPRESSED

L 2 LIGHT FAILURE SENSOR
2, 7 GROUND : APPROX. 12 VOLTS WITH THE STOP LIGHT SW ON
4, 8 GROUND : APPROX. 12 VOLTS WITH THE IGNITION SW AT ON POSITION
11 GROUND : ALWAYS CONTINUITY
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
H1430R 930S1129
L 230R1030T 629
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1C20FLOOR NO. 2 WIRE AND J/B NO. 1 (LEFT KICK PANEL)
1E20INSTRUMENT PANEL WIRE AND J/B NO. 1 (LEFT KICK PANEL)
1H20COWL WIRE AND J/B NO 1 (LEFT KICK PANEL)1I20COWL WIRE AND J/B NO. 1 (LEFT KICK PANEL)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
IE136INSTRUMENT PANEL WIRE AND FLOOR NO. 2 WIRE (LEFT KICK PANEL)
BM140BACK DOOR NO. 1 WIRE AND FLOOR NO. 2 WIRE (LEFT SIDE OF PACKAGE TRAY TRIM)
BO140BACK DOOR NO. 2 WIRE AND BACK DOOR NO. 1 WIRE (BACK DOOR UPPER LEFT)
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
BI40LEFT QUARTER PILLAR
BJ40LOWER BACK PANEL CENTER
BK40RIGHT SIDE OF HIGH MOUNTED STOP LIGHT
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
B 440FLOOR NO 2 WIREB1040BACK DOOR NO. 2 WIRE
B 640FLOOR NO. 2 WIRE
1 2X 4 2 X
X7 8 X11X
X
3
5X
3
512
1
XX X H1 4 L 2 R 9 R1 0 S 1 1
T 6BLUE
18
SYSTEM OUTLINE
SERVICE HINTS

2 1
1B 6 IE18 R
R
R
R
W- G
G
W- B
R- B
LG
R
R
R
R W- G
G
W- B
R- B
LG LG
LG 3214
I18
IGNITION KEY
CYLINDER LIGHT
P 6
OPEN DDOR
WARNING LIGHT
[TELLTALE
LIGHT RH] T 6
LUGGAGE
COMPARTMENT
LIG HT
LUGGAGE
COMPARTMENT
LIGHT SW L 52
LGL 4
18

1
PERSONAL L IGHT
11 9

133
CURRENT ALWAYS FLOWS TO TERMINAL (A) 9 OF THE THEFT DETERRENT AND DOOR LOCK CONTROL ECU THROUGH THE
DOOR FUSE, AND TO TERMINAL (B) 1 THROUGH THE DOME FUSE.
WHEN THE IGNITION SW TURNED ON, THE CURRENT FLOWING THROUGH THE ECU-IG FUSE º TERMINAL (A) 7 OF THE ECU º
TERMINAL (A) 6 FLOWS THROUGH THE COIL SIDE OF THE POWER MAIN RELAY TO GROUND, CAUSING THE RELAY TO OPERATE.
THE CURRENT FLOWING THROUGH THE DOOR FUSE FLOWS TO THE DOOR LOCK CONTROL SWITCHES, CAUSING THE
INDICATOR LIGHT TO LIGHT UP.
1. MANUAL LOCK OPERATION
WHEN THE DOOR LOCK CONTROL SW OR KEY SW ARE PUSHED TO LOCK POSITION, A LOCK SIGNAL IS INPUT TO TERMINAL (B)
5, (B) 22 (FOR KEY SW) OF THE THEFT DETERRENT AND DOOR LOCK CONTROL ECU AND CAUSES THE ECU TO FUNCTION.
CURRENT FLOWS FROM TERMINAL (A) 9 OF THE ECU º TERMINAL (A) 3 º TERMINAL 2 (LH), TERMINAL 4 (RH) OF THE DOOR LOCK
MOTORS º TERMINAL 4 (LH), TERMINAL 2 (RH) º TERMINAL (A) 2 OF THE ECU º TERMINAL (A) 4 º GROUND AND THE DOOR LOCK
MOTOR CAUSES THE DOOR TO LOCK.
2. MANUAL LOCK OPERATION
WHEN THE DOOR LOCK CONTROL SW OR KEY SW ARE PUSHED TO UNLOCK POSITION, AN UNLOCK SIGNAL IS INPUT TO
TERMINAL (B) 8, (B) 6 (FOR KEY SW LH) OR (B) 16 (FOR KEY SW RH) OF THE THEFT DETERRENT AND DOOR LOCK CONTROL ECU
AND CAUSES TO FUNCTION.
CURRENT FLOWS FROM TERMINAL (A) 9 OF THE ECU º TERMINAL (A) 2 º TERMINAL 4 (LH), TERMINAL 2 (RH) OF THE DOOR LOCK
MOTORS º TERMINAL 2 (LH), TERMINAL 4 (RH) º TERMINAL (A) 3 OF THE ECU º TERMINAL (A) 4 º GROUND AND THE DOOR LOCK
MOTOR CAUSES THE DOOR TO UNLOCK.
WHEN UNLOCK OPERATION OCCURS USING THE LH DOOR KEY SW, DOING THE UNLOCK OPERATION ONCE UNLOCKS ONLY THE
DRIVER'S DOOR. TO UNLOCK ALL OTHER DOORS TOGETHER, UNLOCK OPERATION MUST BE DONE AGAIN WITHIN 3 SECONDS
OF THE FIRST OPERATION.
3. IGNITION KEY REMINDER OPERATION

OPERATION OF DOOR LOCK BUTTON (OPERATION OF DOOR LOCK MOTORS)
WHEN THE IGNITION KEY IS IN THE CYLINDER (UNLOCK WARNING SW ON) AND THE DOOR IS OPENED AND LOCKED USING
DOOR LOCK BUTTON (DOOR LOCK MOTOR). THE DOOR IS LOCKED ONCE BUT EACH DOOR IS UNLOCKED SOON BY THE
OPERATION OF THE ECU. AS A RESULT OF ECU ACTIVATION, THE CURRENT FLOWS FROM TERMINAL (A) 9 OF THE ECU º
TERMINAL (A) 2 º TERMINAL 4 (LH),TERMINAL 2 (RH)OF THE DOOR LOCK MOTORS º TERMINAL 2 (LH), TERMINAL 4 (RH) º
TERMINAL (A) 3 OF THE ECU º TERMINAL (A) 4 º GROUND AND CAUSES ALL THE DOOR LOCK CONTROL SW AND DOOR
LOCK KEY SW.

KEY LESS LOCK OPERATION
WHEN THE IGNITION KEY IS STILL INSERTED IN THE CYLINDER (UNLOCK WARNING SW ON), THE DOOR IS OPEN AND UNLOCK
OPERATION IS PREVENTED BY KEEPING THE DOOR LOCK BUTTON PRESSED TO THE LOCK SIDE, THE DOOR IS KEPT IN THE
LOCK CONDITION. IF THE DOOR IS THEN CLOSED, A SIGNAL IS INPUT TO THE ECU FROM THE DOOR COURTESY SW. THIS
ACTIVATES THE ECU AND EACH DOOR IS UNLOCKED.
SYSTEM OUTLINE