
DI-250
DIAGNOSTICS - ANTI-LOCK BRAKE SYSTEM
DI048-17
ABS Warning Light Circuit
CIRCUIT DESCRIPTION
If the ECU detects trouble, it lights the ABS warning light while at the same time prohibiting ABS control. At
this time, the ECU records a DTC in memory.
Connect terminals Tc and E1 of the DLC1 or Tc and CG of the DLC3 to make the ABS warning light blink
and output the DTC.
WIRING DIAGRAM
40A AM1
140A ALT 100A INP
2 2 1 1 2 2
W W W-L
2D 2L 1B 1K
1 4
Fusible Link Block Engine Room J/B No. 2
Driver Side J/B No. 1 I12
Ignition Switch
J17 J/C 10A GAUGE
2 1 IG1 AM1
GR GR B-Y
1D 1K
A A 4 2
Driver Side J/B No. 1
B-L
Skid Control ECU
5
C11 GR
WA
13
FL MAIN
ABS Warning
Light 6
9
C10 C11
Battery
Combination Meter
B B
W-B J2 W-B
J3
Junction
ED Connector
F04206
2001 SIENNA (RM787U)
Author : Date : 404
DI-251
DIAGNOSTICS - ANTI-LOCK BRAKE SYSTEM
INSPECTION PROCEDURE
Troubleshoot in accordance with the table below for each trouble symptom.
ABS warning light does not light up See below
ABS warning light remains on See page DI-247
1 Check operation of the ABS warning light.
PREPARATION:
(a) Turn the ignition switch OFF.
(b) Disconnect the connector from the ABS actuator.
(c) Turn the ignition switch ON.
CHECK:
Check the ABS warning light goes on.
OK Check and replace ABS actuator assembly.
NG
2 Check for short circuit in harness and connector between combination meter and ABS
actuator (See page IN-31 ).
NG Repair or replace harness or connector.
OK
Replace or repair bulb or combination meter.
2001 SIENNA (RM787U)
Author : Date : 405