2007 TOYOTA SIENNA ECU

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, there may be a
malfunction on the wire harness side.
(c) Measure the resistance between the specified
terminals on the wire harness side connector.
If the result is not as specified, there may be a
malfunction on the wire harness side.
3. AIRBAG SENSOR ASSEMBLY
(a) Disconnect the A21 ECU connector.
(b) Measure the voltage between the specified
terminals on the wire harness side connector.
If the result is not as specified, there may be a
malfunction on the wire harness side.
Terminal No.
(Symbols)Wiring Color Terminal Description Condition Specified Condition
1A-1 - Body ground W - Body ground Power supply (Battery) Always 11 to 14 V
1C-30 (ALTB) - Body
groundB - Body ground Power supply (Battery) Always 11 to 14 V
Terminal No.
(Symbols)Wiring Color Terminal Description Condition Specified Condition
1E-7 (MPX1) - Body
groundR-L - Body ground MPX line Always 10 k
or higher
B7-21 (MPX2) - Body
groundR-L - Body ground MPX line Always 10 k
or higher
1L-16 (GND1) - Body
groundW-B - Body ground Ground Always Below 1
1K-17 (GND2) - Body
groundW-B - Body ground Ground Always Below 1
C111710E10
Terminal No.
(Symbols)Wiring Color Terminal Description Condition Specified Condition
A21-5 (IG2) - Body ground B-O - Body ground Power supply (IG) Ignition switch: ON 11 to 14 V

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, there may be a
malfunction on the wire harness side.
4. SEAT POSITION CONTROL ECU (with Driving
Position Memory)
(a) Disconnect the P58 and P59 ECU connectors.
(b) Measure the voltage between the specified
terminals on the wire harness side connector.
If the result is not as specified, there may be a
malfunction on the wire harness side.
(c) Measure the resistance between the specified
terminals on the wire harness side connector.
If the result is not as specified, there may be a
malfunction on the wire harness side.
Te r m i n a l N o .
(Symbols)Wiring Color Terminal Description Condition Specified Condition
A21-24 (MPX1) - Body
groundR-L - Body ground MPX line Always 10 k
or higher
A21-22 (MPX2) - Body
groundR-L - Body ground MPX line Always 10 k
or higher
A21-27 (E1) - Body
groundW-B - Body ground Ground Always Below 1
A21-28 (E2) - Body
groundW-B - Body ground Ground Always Below 1
B066387E13
Te r m i n a l N o .
(Symbols)Wiring Color Terminal Description Condition Specified Condition
P59-4 (IG) - Body ground Y - Body ground Power supply (IG) Ignition switch: ON 11 to 14 V
P59-8 (SYSB) - Body
groundW-L - Body ground Power supply (Battery) Always 11 to 14 V
P58-5 (+B) - Body ground V - Body ground Power supply (Battery) Always 11 to 14 V
Te r m i n a l N o .
(Symbols)Wiring Color Terminal Description Condition Specified Condition
P59-1 (MPX1) - Body
groundR-L - Body ground MPX line Always 10 k
or higher
P58-1 (GND) - Body
groundW-B - Body ground Ground Always Below 1

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 wire harness side connector.
If the result is not as specified, there may be a
malfunction on the wire harness side.
(c) Measure the resistance between the specified
terminals on the wire harness side connector.
HINT:
*1: for Automatic A/C
*2: for Manual A/C
If the result is not as specified, there may be a
malfunction on the wire harness side.
B067255E02
Terminal No.
(Symbols)Wiring Color Terminal Description Condition Specified Condition
A9-20 (B) - Body ground
(*1)W-L - Body ground Power supply (Battery) Always 11 to 14 V
A9-17 (+B) - Body ground
(*2)W-L - Body ground Power supply (Battery) Always 11 to 14 V
A9-19 (ACC) - Body
ground (*1)P - Body ground Power supply (ACC) Ignition switch: ACC 11 to 14 V
A9-40 (ACC) - Body
ground (*2)P - Body ground Power supply (ACC) Ignition switch: ACC 11 to 14 V
A9-18 (IG) - Body ground
(*1)R-Y - Body ground Power supply (IG) Ignition switch: ON 11 to 14 V
A9-38 (IG+) - Body ground
(*2)R-Y - Body ground Power supply (IG) Ignition switch: ON 11 to 14 V
Terminal No.
(Symbols)Wiring Color Terminal Description Condition Specified Condition
A9-2 (MPX+) - Body
ground (*1)V - Body ground MPX line Always 10 k
or higher
A9-4 (MPX+) - Body
ground (*2)V - Body ground MPX line Always 10 k
or higher
A9-3 (MPX-) - Body
ground (*1)R-L - Body ground MPX line Always 10 k
or higher
A9-5 (MPX-) - Body
ground (*2)R-L - Body ground MPX line Always 10 k
or higher
A9-1 (GND) - Body ground
(*1)W-B - Body ground Ground Always Below 1
A9-6 (GND) - Body ground
(*2)W-B - Body ground Ground Always Below 1

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 harness side connector.
If the result is not as specified, there may be a
malfunction on the wire harness side.
(c) Measure the resistance between the specified
terminals on the wire harness side connector.
If the result is not as specified, there may be a
malfunction on the wire harness side.
7. POWER SLIDE DOOR ECU RH
(a) Disconnect the P27 and P28 ECU connectors.
(b) Measure the voltage between the specified
terminals on the wire harness side connector.
B067255E03
Te r m i n a l N o .
(Symbols)Wiring Color Terminal Description Condition Specified Condition
C10-12 (+B) - Body
groundW-L - Body ground Power supply (Battery) Always 11 to 14 V
C10-32 (IG+) - Body
groundB-R - Body ground Power supply (IG) Ignition switch: ON 11 to 14 V
Te r m i n a l N o .
(Symbols)Wiring Color Terminal Description Condition Specified Condition
C10-29 (MPX1) - Body
groundR-L - Body ground MPX line Always 10 k
or higher
C10-28 (MPX2) - Body
groundV - Body ground MPX line Always 10 k
or higher
C10-30 (ES) - Body
groundBR - Body ground Ground Always Below 1
B067256E02
Te r m i n a l N o .
(Symbols)Wiring Color Terminal Description Condition Specified Condition
P28-2 (B) - Body ground B - Body ground Power supply (Battery) Always 11 to 14 V

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 specified
terminals on the wire harness side connector.
If the result is not as specified, there may be a
malfunction on the wire harness side.
8. POWER SLIDE DOOR ECU LH
(a) Disconnect the P25 and P26 ECU connectors.
(b) Measure the voltage between the specified
terminals on the wire harness side connector.
If the result is not as specified, there may be a
malfunction on the wire harness side.
(c) Measure the resistance between the specified
terminals on the wire harness side connector.
If the result is not as specified, there may be a
malfunction on the wire harness side.
P27-10 (ECUB) - Body
groundW - Body ground Power supply (Battery) Always 11 to 14 V Terminal No.
(Symbols)Wiring Color Terminal Description Condition Specified Condition
Terminal No.
(Symbols)Wiring Color Terminal Description Condition Specified Condition
P27-22 (MPX1) - Body
groundR - Body ground MPX line Always 10 k
or higher
P28-8 (GND) - Body
groundW-B - Body ground Ground Always Below 1
B067256E03
Terminal No.
(Symbols)Wiring Color Terminal Description Condition Specified Condition
P26-2 (B) - Body ground B-W - Body ground Power supply (Battery) Always 11 to 14 V
P25-10 (ECUB) - Body
groundW - Body ground Power supply (Battery) Always 11 to 14 V
Terminal No.
(Symbols)Wiring Color Terminal Description Condition Specified Condition
P25-22 (MPX1) - Body
groundR - Body ground MPX line Always 10 k
or higher
P26-8 (GND) - Body
groundW-B - Body ground Ground Always Below 1

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 the wire harness side connector.
If the result is not as specified, there may be a
malfunction on the wire harness side.
(c) Measure the resistance between the specified
terminals on the wire harness side connector.
If the result is not as specified, there may be a
malfunction on the wire harness side.
10. OUTER MIRROR CONTROL ECU RH (with Driving
Position Memory)
(a) Disconnect the O11 ECU connector.
(b) Measure the voltage between the specified
terminals on the wire harness side connector.
B067256E04
Te r m i n a l N o .
(Symbols)Wiring Color Terminal Description Condition Specified Condition
P14-2 (B) - Body ground B-R - Body ground Power supply (Battery) Always 11 to 14 V
P13-10 (ECUB) - Body
groundW-L - Body ground Power supply (Battery) Always 11 to 14 V
P13-9 (IG) - Body ground B-R - Body ground Power supply (IG) Ignition switch: ON 11 to 14 V
Te r m i n a l N o .
(Symbols)Wiring Color Terminal Description Condition Specified Condition
P13-22 (MPX1) - Body
groundR-L - Body ground MPX line Always 10 k
or higher
P14-8 (GND) - Body
groundW-B - Body ground Ground Always Below 1
B120936E06
Te r m i n a l N o .
(Symbols)Wiring Color Terminal Description Condition Specified Condition
O11-3 (SIG) - Body
groundB-R - Body ground Power supply (IG) Ignition switch: ON 11 to 14 V

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 specified
terminals on the wire harness side connector.
If the result is not as specified, there may be a
malfunction on the wire harness side.
11. OUTER MIRROR CONTROL ECU LH (with Driving
Position Memory)
(a) Disconnect the O9 ECU connector.
(b) Measure the voltage between the specified
terminals on the wire harness side connector.
If the result is not as specified, there may be a
malfunction on the wire harness side.
(c) Measure the resistance between the specified
terminals on the wire harness side connector.
If the result is not as specified, there may be a
malfunction on the wire harness side.
O11-4 (CPUB) - Body
groundW-L - Body ground Power supply (Battery) Always 11 to 14 V
O11-6 (BDR) - Body
groundR-L - Body ground Power supply (Battery) Always 11 to 14 V Terminal No.
(Symbols)Wiring Color Terminal Description Condition Specified Condition
Terminal No.
(Symbols)Wiring Color Terminal Description Condition Specified Condition
O11-8 (MPX1) - Body
groundR-L - Body ground MPX line Always 10 k
or higher
O11-1 (GND) - Body
groundW-B - Body ground Ground Always Below 1
B120936E07
Terminal No.
(Symbols)Wiring Color Terminal Description Condition Specified Condition
O9-3 (SIG) - Body ground B-R - Body ground Power supply (IG) Ignition switch: ON 11 to 14 V
O9-4 (CPUB) - Body
groundW-L - Body ground Power supply (Battery) Always 11 to 14 V
O9-6 (BDR) - Body ground R-L - Body ground Power supply (Battery)Always 11 to 14 V
Terminal No.
(Symbols)Wiring Color Terminal Description Condition Specified Condition
O9-8 (MPX1) - Body
groundR-L - Body ground MPX line Always 10 k
or higher
O9-1 (GND) - Body
groundW-B - Body ground Ground Always Below 1

EM–562GR-FE ENGINE MECHANICAL – ENGINE ASSEMBLY
EM
(b) Install the transmission control cable assembly to
the control shaft lever with the nut.
Torque: 12 N*m (122 kgf*cm, 9 ft.*lbf)
(c) Connect the transmission control cable assembly to
the bracket with a new clip.
69. CONNECT FUEL TUBE SUB-ASSEMBLY
(a) Push in the fuel tube connector to the fuel pipe until
the fuel tube makes a "click" sound.
NOTICE:
• Check for damage or contamination on the
connected part of the pipe.
• Check if the pipe and the connector are
securely connected by trying to pull them
apart.
(b) Install the No. 1 fuel pipe clamp.
70. CONNECT NO. 1 OIL COOLER OUTLET HOSE
(a) Using pliers, grip the claws of the clip and slide the
clip to connect the No. 1 oil cooler outlet hose to the
No. 1 oil cooler outlet tube.
D025414E04
C089134E02
B012944
A155045
A155031