Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 2004-2007 Approved SRM 04 05 202xl ciaud
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05-1253
DIAGNOSTICS - AUDIO SYSTEM 05ASM-03
AUDIO SYSTEM CANNOT BE OPERATED WITH STEERING PAD
SWITCH
WIRING DIAGRAM
C13
Steering Pad SW Radio Receiver Assy
7 7
12 LG LG
AU1 IF3 R9 SW1
8 8
AU2 11 L L
IF3 R9 SW2
6 6
10 Y Y
EAU IF3 R9 GND
I34647
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1436
05-1254
DIAGNOSTICS - AUDIO SYSTEM
INSPECTION PROCEDURE
1 INSPECT STEERING PAD SWITCH ASSY(AU1, AU2, EAU)
AU1
EAU AU2
I35623
(a) Remove the steering pad switch assy.
(b) Check continuity between terminals at each condition, as shown in the chart.
Standard:
Tester connection Condition Specified condition
AU1 - EAU Do not switch position Approx. 100 k
AU1 - EAU SEEK+ switch: push 0
AU1 - EAU SEEK- switch: push Approx. 0.3 k
AU1 - EAU VOL+ switch: push Approx. 1 k
AU1 - EAU VOL- switch: push Approx. 3.2 k
AU1 - EAU Do not switch position Approx. 100 k
AU1 - EAU MODE switch: push 0
NG REPLACE STEERING PAD SWITCH ASSY
OK
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1437
05-1255
DIAGNOSTICS - AUDIO SYSTEM
2 CHECK HARNESS AND CONNECTOR(STEERING PAD SWITCH LH - RADIO
RECEIVER ASSY)
10 Speaker, Radio Receiver Assy: (a) Disconnect the connectors from the steering pad switch
LH and radio receiver assy.
SW2 SW1 GND (1) Check continuity between terminals at each condi-
tion, as shown in the chart.
Standard:
Tester connection Specified condition
SW1- - AU1 Continuity
SW2 - AU2 Continuity
GND - EAU Continuity
(2) Check for a short between terminals at each condi-
6 Speaker, Radio Receiver Assy: tion, as shown in the chart.
Standard:
SW2 SW1 GND
Tester connection Specified condition
SW1 - Body ground No continuity
SW2 - Body ground No continuity
GND - Body ground No continuity
Steering Pad Switch LH:
AU1
EAU AU2
I35608
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR (See page 01-37 )
OK
REPLACE RADIO RECEIVER ASSY
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 1438
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