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DI-601
DIAGNOSTICS - CRUISE CONTROL SYSTEM
DI090-39
CRUISE MAIN Indicator Light Circuit
CIRCUIT DESCRIPTION
When the cruise control main switch is turned ON, CRUISE MAIN indicator light lights up.
WIRING DIAGRAM
CRUISE Contorol
Indicator Light
Cruise Control ECU
J17 (in Combination Meter)
J/C 4
9 3
GR (*2) G-Y
C10 C9 C15 PI
A A J18
A J/C
GR (*1) GR (*1)
GR D D
I12
Driver Side J/B No.1 Ignition Switch
2 GAUGE 1
B-Y IG1 AM1
1D 1K
4 2
W-L
Engine Room J/B No. 2 Driver Side J/B No.1
2 2 1 AM1 2
W
2D 2L 1B IK
1 2
W
FL BLOCK Battery
4 INP ALT 1
B-L
F8 F8
FL MAIN
(*1) w/ VSC
(*2) w/o VSC
I18653
2001 SIENNA (RM787U)
Author : Date : 755
DI-602
DIAGNOSTICS - CRUISE CONTROL SYSTEM
INSPECTION PROCEDURE
1 Check voltage between terminals PI and GND of cruise control ECU connector.
PREPARATION:
ON
Tun ignition switch ON.
CHECK:
PI Measure voltage between terminals PI and GND of cruise con-
trol ECU connector when main switch is on and off.
OK:
Switch position Voltage
OFF 10 - 16 V
ON Below 1.2 V
(-) (+)
AB0119
I00144
I00178
OK Proceed to next circuit inspection shown on
problem symptom table (See page DI-572 ).
NG
2 Check combination meter. (See page BE-2 )
NG Replace combination meter.
OK
Check and replace cruise control ECU (See
page IN-31 ).
2001 SIENNA (RM787U)
Author : Date : 756
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