Lexus RX300 (MCU15). Service manual — part 265
F13435
Instrument Panel J/B
HEATER
1K
15
C12
SLIP Indicator
1
IE2
2
C10
W–L
IND
Skid Control ECU
A23
6
7
R–W
W–L
J/B No. 3
R–W
1C
13
B–Y
4
2
Ignition Switch
W
Instrument Panel J/B
1C
6
1A
1
5
3
Fusible Link Block
ALT
Battery
AM1
2
1
IG1 AM1
1
3A
5
3E
W
W–L
DI–292
–
DIAGNOSTICS
ABS & BA & TRC & VSC SYSTEM
LEXUS RX300 (RM785E)
SLIP Indicator Light Circuit
CIRCUIT DESCRIPTION
The SLIP indicator blinks during TRC & VSC operation.
WIRING DIAGRAM
DI1HA–06
–
DIAGNOSTICS
ABS & BA & TRC & VSC SYSTEM
DI–293
LEXUS RX300 (RM785E)
INSPECTION PROCEDURE
HINT:
Start the inspection from step 1 in case of using the hand–held tester and start from step 2 in case of not
using the hand–held tester.
1
Check operation of the SLIP indicator light.
PREPARATION:
(a)
Connect the hand–held tester to the DLC3.
(b)
Turn the ignition switch ON, and push the hand–held tester main switch ON.
(c)
Select the ACTIVE TEST mode on the hand–held tester.
CHECK:
Check that ”ON” and ”OFF” of the SLIP indicator light can be shown on the combination meter by the hand–
held tester.
OK
Go to step 4.
NG
2
Check that the SLIP indicator light is on for 3 seconds soon after ignition switch
has been turned ON.
OK
Check and replace skid control ECU.
NG
3
Check SLIP indicator light.
See combination meter troubleshooting on page BE–68.
NG
Repair bulb or combination meter assembly
(See page BE–66).
OK
DI–294
–
DIAGNOSTICS
ABS & BA & TRC & VSC SYSTEM
LEXUS RX300 (RM785E)
4
Check for open and short circuit in harness and connector between skid control
ECU and SLIP indicator light (See page IN–32).
NG
Repair or replace harness or connector.
OK
Check and replace skid control ECU.
F13436
1C
ECU–IG
1
A23
Instrument Panel J/B
20
BZ
Buzzer
Skid Control ECU
P–B
2
1
2
B–R
10
B–Y
1D
4
Ignition Switch
W–L
Instrument Panel J/B
1C
6
AM1
2
1
1A
1
FL Block
5
3
Battery
ALT
IG1
AM1
W
W
–
DIAGNOSTICS
ABS & BA & TRC & VSC SYSTEM
DI–295
LEXUS RX300 (RM785E)
VSC Buzzer Circuit
CIRCUIT DESCRIPTION
The VSC buzzer sounds during VSC operation.
WIRING DIAGRAM
DI1HB–06
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