D12199
A22
Brake Actuator with ECU
Tc
16
Y–B
3A
D7
DLC3
16
13
4
Tc
CG
IE
W–B
15 3A
J11
J/C
C
C
J/B No. 3
Y–B
W–B
A04550
1 2 3 4 5 6 7 8
9
1112 1314 1516
10
DLC3
Tc
CG
–
DIAGNOSTICS
ANTI–LOCK BRAKE SYSTEM
DI–581
843
Author:
Date:
2003 TOYOTA TACOMA (RM1002U)
Tc Terminal Circuit
CIRCUIT DESCRIPTION
Connecting terminals Tc and CG of the DLC3 causes the ECU to display the DTC by flashing the ABS warn-
ing light.
WIRING DIAGRAM
INSPECTION PROCEDURE
1
Check voltage between terminals Tc and CG of DLC3.
CHECK:
(a)
Turn the ignition switch ON.
(b) Measure voltage between terminals Tc and CG of DLC3.
OK:
Voltage: 10 – 14 V
OK
If ABS warning light does not blink even after Tc
and CG are connected, the ECU may be defec-
tive.
NG
DI19F–08
DI–582
–
DIAGNOSTICS
ANTI–LOCK BRAKE SYSTEM
844
Author:
Date:
2003 TOYOTA TACOMA (RM1002U)
2
Check for open and short in harness and connector between skid control ECU
and DLC3, DLC3 and body ground (See page IN–28).
NG
Repair or replace harness or connector.
OK
Check and replace brake actuator ASSY.