Lexus ES300 (1997 year). Manual — part 410
N22064
Theft Deterrent ECU
HEAD
8
J/C
D
7
Light Control Switch
(COMB. SW)
3
8
3
2
4
1
Headlight
Control Relay
40A MAIN
3
E/G Room J/B No.2
FL BLOCK
FL MAIN
3.0W
Battery
1
1
1
2
W–B
16
8
R–B
F
E
D
Headlights
T3
R–B
J11
R–B
R–B
R–B
J10
IJ1
J19
J18
J19
E
2K
2G
2B
J8
J6
B
B–G
R–B
–
DIAGNOSTICS
THEFT DETERRENT SYSTEM
DI–417
569
1997 LEXUS ES300 (RM511U)
Headlight Control Relay Circuit
CIRCUIT DESCRIPTION
When the theft deterrent system is activated, it causes the Tr in the ECU to switch on and off at approximately
0.4 sec. intervals. This switches the headlight control relay on and off, thus flashing the headlights (See the
wiring diagram below).
In this condition, if any of the following operations is done, the Tr in the ECU goes off and the headlight control
relay switches off, thus stopping the headlights flashing:
(1)
Unlock the front LH or RH door with key.
(2)
Turn the ignition switch to ACC or ON position.
(3)
Unlock the doors with the wireless door lock control system.
(4)
Wait for approximately 60 seconds.
WIRING DIAGRAM
DI020–01
N20679
HEAD
(–)
(+)
DI–418
–
DIAGNOSTICS
THEFT DETERRENT SYSTEM
570
1997 LEXUS ES300 (RM511U)
INSPECTION PROCEDURE
HINT:
The flow chart below is based on the premise that the headlights light up normally whenever the light control
switch is operated. If headlight operation is not normal when the light control switch is operated, proceed
to troubleshooting on page
1
Check voltage between terminal HEAD of theft deterrent ECU connector and
body ground.
PREPARATION:
Disconnect the theft deterrent ECU connector.
CHECK:
Measure voltage between terminal HEAD of theft deterrent
ECU connector and body ground.
OK:
Voltage: 10
∼
14V
NG
Check and repair harness and connector be-
tween theft deterrent ECU and headlight control
relay (See page
OK
Check and replace theft deterrent ECU.
N22065
Theft Deterrent ECU
TAIL
7
B
B
J/C
J34
10
C
C
J2
J/C
6
2
3
1
5
8
9
4
Instrument Panel J/B
1
1
FL MAIN
3.0W
Battery
Light Failure
Sensor
T3
G–R
G–R
G–R
G–R
B–R
B–G
IG1
1C
1B
1S
1C
10A TAIL
Taillight Control
Relay
FL BLOCK
Front Parking
Lights
F6
F11
–
DIAGNOSTICS
THEFT DETERRENT SYSTEM
DI–419
571
1997 LEXUS ES300 (RM511U)
Taillight Control Relay Circuit
CIRCUIT DESCRIPTION
When the theft deterrent system is activated, it causes the Tr in the ECU to switch on and off at approximately
0.4 sec. intervals. This switches the taillight control relay on and off, thus flashing the taillights (See the wiring
diagram below).
In this condition, if any of the following operations is done, the Tr in the ECU goes off and the taillight control
relay switches off, thus stopping the taillights flashing:
(1)
Unlock the front LH or RH door with key.
(2)
Turn the ignition switch to ACC or ON position.
(3)
Unlock the doors with the wireless door lock control system.
(4)
Wait for approximately 60 seconds.
WIRING DIAGRAM
DI021–01
N20680
TAIL
(–)
(+)
DI–420
–
DIAGNOSTICS
THEFT DETERRENT SYSTEM
572
1997 LEXUS ES300 (RM511U)
INSPECTION PROCEDURE
HINT:
The flow chart below is based on the premise that the taillights light up normally whenever the light control
switch is operated. If taillight operation is not normal when the light control switch is operated, proceed to
troubleshooting on page
.
1
Check voltage between terminal TAIL of theft deterrent ECU connector and body
ground.
PREPARATION:
Disconnect the theft deterrent ECU connector.
CHECK:
Measure voltage between terminal TAIL of theft deterrent ECU
connector and body ground.
OK:
Voltage: 10
∼
14V
NG
Check and repair harness and connector be-
tween theft deterrent ECU and taillight control
relay (See page
OK
Check and replace theft deterrent ECU.
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст