
05-2036
DIAGNOSTICS - DYNAMIC LASER CRUISE CONTROL SYSTEM 05BEK-02
DISTANCE CONTROL ECU POWER SOURCE CIRCUIT
CIRCUIT DESCRIPTION
This circuit provides power to operate the distance control ECU.
WIRING DIAGRAM
Distance Control ECU
J18 J28
J/C 4 J/C 1
B-R B-R B-R B-R
IK1 D2 B
87 126 B B
B-R
Driver Side J/B
IG1 Relay
1 ECU-IG 23
W B-R
1A 1L
5 3
29 16
B-Y W-B
1H 1L
2 1 I15 Ignition SW
AM1 10
W-L B-Y
1H
1 AM1 IG1 2
B-Y
W-B
FL Block
10
1 1 BR
ALT D2 SGND
W J20
F7 F6
J/C A
5 12
BR BR BR BR
IK1 D2 GND
W 76 86 A A
J28
J29
J/C
FL MAIN J/C
8
BR BR BR
II3
A A
Battery
IE EB
I34885
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 2219
05-2037
DIAGNOSTICS - DYNAMIC LASER CRUISE CONTROL SYSTEM
INSPECTION PROCEDURE
1 INSPECT FUSE(ECU-IG)
(a) Remove the ECU - IG fuse from the driver side J/B.
(b) Check the continuity of ECU - IG fuse.
Standard:
Below 1
NG REPLACE FUSE
OK
2 CHECK WIRE HARNESS AND CONNECTOR(DISTANCE CONTROL ECU - BODY
GROUND)
D2 (a) Remove the distance control ECU with connector.
(b) Check the continuity between terminal SGND (D2-10)
and GND (D2-12) of distance control ECU and body
ground.
Standard:
Below 1
GND
SGND
I34910
NG REPAIR OR REPLACE WIRE HARNESS OR
CONNECTOR
OK
3 CHECK WIRE HARNESS AND CONNECTOR(DISTANCE CONTROL ECU -
BATTERY)
(a) Measure the voltage between terminal B (D2-1) of dis-
B tance control ECU and body ground.
D2
Standard:
10 to 14 V
NG REPAIR OR REPLACE WIRE HARNESS OR
I34900 CONNECTOR
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE
(See page 05-2008 )
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 2220