
05-1346
DIAGNOSTICS - NAVIGATION SYSTEM 05CEF-14
POWER SOURCE CIRCUIT (RADIO AND NAVIGATION ASSY)
CIRCUIT DESCRIPTION
This circuit provides power to the radio and navigation assy.
WIRING DIAGRAM
Radio and Navigation Assy
J/C
12 24 4 1
L-Y L-Y L-Y
J7 J8 IF2 R15 B
Driver Side J/B
J23
ACC Relay J/C
1 RAD2 24 3 11
W GR GR GR
1A 1L IF2 R15 ACC
5 3 A A
9 16
P W-B
1H 1L
2 1 I15 Ignition SW
AM1 10
W-L P
1H
1 AM1 ACC 3
P
W
Engine Room J/B W-B
J23
3 RAD No.1 Short Pin 1 J/C
L-Y W 20
2B 2D W-B W-B
2 1 R15 GND
B B
FL Block
1 1
W W 7
F6 F8 W-B W-B
IF2
FL MAIN ALT 1
W
F7
Battery
IE IF
I33887
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1529
05-1347
DIAGNOSTICS - NAVIGATION SYSTEM
INSPECTION PROCEDURE
1 INSPECT RADIO AND NAVIGATION ASSY(B, ACC, GND)
Wire Harness View: (a) Disconnect the radio and navigation assy connector R15.
(b) Measure the resistance according to the value(s) in the
R15 table below.
Standard:
Tester connection Condition Specified condition
GND - Body ground Always Below 1
(c) Measure the voltage according to the value(s) in the table
GND
B below.
ACC I38652 Standard:
Tester connection Condition Specified condition
B - 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 PROBLEM SYMPTOMS TABLE OR
DIAGNOSTIC TROUBLE CODE CHART (SEE PAGE 05-1286 OR 05-1278 )
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1530