
05-1220
DIAGNOSTICS - AUDIO SYSTEM 05ASE-06
POWER SOURCE CIRCUIT(MULTI-DISPLA Y 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
Driver Side J/B
J23
ACC Relay J/C
1 RAD2 24 3 13 32
W GR GR GR LG
1A 1L IF2 IH3 R26 ACC
5 3 A A
9 16
P W-B
1H 1 1L
2 I15 Ignition SW
AM1 10
W-L P
1H
1 AM1 ACC 3
P
W
W-B
R/B No.3
RSE
V P 18 29
3 3 W-B Y
IH3 R26 GND
2 1
J23
FL Block
J/C
1 4
W P W-B W-B
F6 F12 B B
FL MAIN ALT 1
W 7
F7 W-B
IF2
Battery IE IF
I33892
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1403
05-1221
DIAGNOSTICS - AUDIO SYSTEM
INSPECTION PROCEDURE
1 INSPECT MULTI-DISPLA Y CONTROLLER SUB-ASSY(+B1, ACC, GND)
(a) Remove the multi-display controller sub-assy.
(b) Check continuity between terminals at each condition, as
+B1 shown in the chart.
Standard:
Tester connection Condition Specified condition
GND - Body ground Always Continuity
(c) Check the voltage between terminals at each condition,
as shown in the chart.
ACC GND I34639 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 (See page 01-37 )
OK
2 CHECK FOR PROBLEM SYMPTOMS TABLE
(a) Check problem symptoms table (See page 05-1213 ).
A Suspected areas are cleared
B Suspected areas still exist
B PROCEED TO NEXT CIRCUIT INSPECTION
SHOWN ON PROBLEM SYMPTOMS TABLE (See
page 05-1213 )
A
REPLACE MULTI-DISPLA Y CONTROLLER SUB-ASSY
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1404