Lexus ES300 (1997 year). Manual — part 372
F00113
A22
ED
BR
Tc
9
LG–R
A
A
A
BR
IK3
6
BR
3
11
DLC1
Tc
E
1
Tc
E
1
LG–R
LG–R
IK3
11
BR
C
B
J/C
BR
DLC2
3
4
LG–R
B
B
B
J8
ABS ECU
J8
J9
J/C
J/C
J24
A22
ED
BR
Tc
9
LG–R
A
A
A
BR
IK3
6
BR
3
11
DLC1
Tc
E
1
Tc
E
1
LG–R
LG–R
IK3
11
BR
C
B
J/C
BR
DLC2
3
4
LG–R
B
B
B
J8
ABS ECU
J8
J9
J/C
J/C
J24
S−17−1 Iei−23−1−A
F00041
DLC1
DLC2
Tc
E
1
E
1
Tc
DLC1
DLC2
Tc
E
1
E
1
Tc
DLC1
DLC2
Tc
E
1
E
1
Tc
DLC1
DLC2
Tc
E
1
E
1
Tc
DLC1
DLC2
Tc
E
1
E
1
Tc
DLC1
DLC2
Tc
E
1
E
1
Tc
–
DIAGNOSTICS
ANTI–LOCK BRAKE SYSTEM
DI–265
417
1997 LEXUS ES300 (RM511U)
Tc Terminal Circuit
CIRCUIT DESCRIPTION
Connecting between terminals Tc and E
1
of the DLC1 or the DLC2 causes the ECU to display the DTC by
flashing the ABS warning light.
WIRING DIAGRAM
INSPECTION PROCEDURE
1
Check voltage between terminals Tc and E
1
of DLC2 or DLC1.
CHECK:
(a)
Turn the ignition switch ON.
(b)
Measure voltage between terminals Tc and E
1
of DLC2 or
DLC1.
OK:
Voltage: 10 – 14 V
OK
If ABS warning light does not blink even after Tc
and E
1
are connected, the ECU may be defec-
tive.
NG
DI0BS–01
DI–266
–
DIAGNOSTICS
ANTI–LOCK BRAKE SYSTEM
418
1997 LEXUS ES300 (RM511U)
2
Check for open and short in harness and connector between ABS ECU and
DLC2 or DLC1, DLC2 or DLC1 and body ground (See page
NG
Repair or replace harness or connector.
OK
Check and replace ABS ECU.
F00117
J/C
ED
BR
A
A
BR
3
16
DLC1
Ts
E
1
R–Y
R–Y
A22
8
Ts
ABS ECU
J24
IK3
8
J/C
J30
F
F
R–Y
J/C
ED
BR
A
A
BR
3
16
DLC1
Ts
E
1
R–Y
R–Y
A22
8
Ts
ABS ECU
J24
IK3
8
J/C
J30
F
F
R–Y
F00007
Ts
DLC1
E
1
Ts
DLC1
E
1
Ts
DLC1
E
1
Ts
DLC1
E
1
Ts
DLC1
E
1
Ts
DLC1
E
1
–
DIAGNOSTICS
ANTI–LOCK BRAKE SYSTEM
DI–267
419
1997 LEXUS ES300 (RM511U)
Ts Terminal Circuit
CIRCUIT DESCRIPTION
The sensor check circuit detects abnormalities in the speed sensor signal which cannot be detected with
the DTC check.
Connecting terminals Ts and E
1
of the DLC1 in the engine compartment starts the check.
WIRING DIAGRAM
INSPECTION PROCEDURE
1
Check voltage between terminals Ts and E
1
of DLC1.
CHECK:
(a)
Turn the ignition switch ON.
(b)
Measure voltage between terminals Ts and E
1
of DLC1.
OK:
Voltage: 10 – 14 V
OK
If ABS warning light does not blink even after Ts
and E
1
are connected, the ECU may be defec-
tive.
NG
DI0BT–01
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