2007 TOYOTA SIENNA Service Repair Manual

Page 849 of 3000

TOYOTA SIENNA 2007  Service Repair Manual MP–6MULTIPLEX COMMUNICATION  –  MULTIPLEX COMMUNICATION SYSTEM
MP
2. MULTIPLEX NETWORK BODY ECU
(a) Disconnect the B7 ECU, 1A, 1C, 1E, 1K and 1L 
junction block connectors.
B167082E01

Page 850 of 3000

TOYOTA SIENNA 2007  Service Repair Manual MULTIPLEX COMMUNICATION  –  MULTIPLEX COMMUNICATION SYSTEMMP–7
MP
(b) Measure the voltage between the specified 
terminals on the wire harness side connector.
If the result is not as specified, th

Page 851 of 3000

TOYOTA SIENNA 2007  Service Repair Manual MP–8MULTIPLEX COMMUNICATION  –  MULTIPLEX COMMUNICATION SYSTEM
MP
(c) Measure the resistance between the specified 
terminals on the wire harness side connector.
If the result is not as specified,

Page 852 of 3000

TOYOTA SIENNA 2007  Service Repair Manual MULTIPLEX COMMUNICATION  –  MULTIPLEX COMMUNICATION SYSTEMMP–9
MP
5. AIR CONDITIONING AMPLIFIER
(a) Disconnect the A9 ECU connector.
(b) Measure the voltage between the specified 
terminals on the

Page 853 of 3000

TOYOTA SIENNA 2007  Service Repair Manual MP–10MULTIPLEX COMMUNICATION  –  MULTIPLEX COMMUNICATION SYSTEM
MP
6. COMBINATION METER
(a) Disconnect the C10 ECU connector.
(b) Measure the voltage between the specified 
terminals on the wire h

Page 854 of 3000

TOYOTA SIENNA 2007  Service Repair Manual MULTIPLEX COMMUNICATION  –  MULTIPLEX COMMUNICATION SYSTEMMP–11
MP
If the result is not as specified, there may be a 
malfunction on the wire harness side.
(c) Measure the resistance between the s

Page 855 of 3000

TOYOTA SIENNA 2007  Service Repair Manual MP–12MULTIPLEX COMMUNICATION  –  MULTIPLEX COMMUNICATION SYSTEM
MP
9. POWER BACK DOOR ECU
(a) Disconnect the P13 and P14 ECU connectors.
(b) Measure the voltage between the specified 
terminals on

Page 856 of 3000

TOYOTA SIENNA 2007  Service Repair Manual MULTIPLEX COMMUNICATION  –  MULTIPLEX COMMUNICATION SYSTEMMP–13
MP
If the result is not as specified, there may be a 
malfunction on the wire harness side.
(c) Measure the resistance between the s