
05-1352
DIAGNOSTICS - NAVIGATION SYSTEM 05NRD-01
POWER SOURCE CIRCUIT(MULTI-DISPLA Y CONTROLLER
SUB-ASSY)
CIRCUIT DESCRIPTION
This circuit is the power source circuit to operate the multi-display controller sub-assy.
WIRING DIAGRAM
Multi-display
Controller Sub-assy
13 J/C 1 5 1 16
V V V Y
J7 J8 IG1 IH3 R26 +B1
R/B No.3 13 32
GR LG
RSE IH3 R26 ACC
P
3 3 J23
2 1 J/C
GR
Driver Side J/B A A
ACC Relay
RAD2 24 3
GR
1L IF2
5 3
9 16
W-B
1H 1L 8 7
2 1 LG LG
AM1 BK1 R27 SELD
1 10
1A 1H
8
W-B
IH2
I15 Ignition SW
J23
P W-L
J/C
3 ACC AM1 1 W-B
B B
FL Block B
1 ALT
W
F7 18 29
W-B Y
IH3 R26 GND
4 1
P
F12 F6 7
W-B
IF2
W
FL MAIN
Battery
IE IF
I45243
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1535
05-1353
DIAGNOSTICS - NAVIGATION SYSTEM
INSPECTION PROCEDURE
1 INSPECT MULTI-DISPLA Y CONTROLLER SUB-ASSY(+B1, ACC, GND, SELD)
Wire Harness View: (a) Disconnect the multi-display controller sub-assy con-
nectors R26 and R27.
(b) Measure the resistance according to the value(s) in the
R26 R27
table below.
+B1
Standard:
Tester connection Condition Specified condition
GND - Body ground Always Below 1
SELD SELD - Body ground Always Below 1
ACC
GND I37211 (c) Measure the voltage according to the value(s) in the table
below.
Standard:
Tester connection Condition Specified condition
+B1 - GND Always 10 to 14 V
ACC - GND Ignition SW ACC 10 to 14 V
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN DIAGNOSTIC TROUBLE CODE CHART
(SEE PAGE 05-1278 )
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1536