ecu harness TOYOTA SIENNA 2007 Service Owner's 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, 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

FU–442GR-FE FUEL – FUEL TANK
FU
INSTALLATION
1. CONNECT FUEL TANK VENT HOSE
2. INSTALL FUEL TANK TO FILLER PIPE HOSE
(a) Install a new fuel tank to filler pipe hose as shown in
the illustration.
3. INSTALL FUEL SUCTION TUBE ASSEMBLY WITH
PUMP AND GAUGE (See page FU-34)
4. INSTALL FUEL TANK MAIN TUBE SUB-ASSEMBLY
(See page FU-35)
5. INSTALL FUEL TANK ASSEMBLY
(a) Set up the fuel tank assembly to the transmission
jack.
(b) While operating the transmission jack, fasten the 4
claws for the wire harness and connect the fuel
pump connector, then install the fuel tank and the 3
fuel tank bands to the vehicle.
(c) Tighten the 6 set bolts of the 3 fuel tank bands.
Torque: 33 N*m (336 kgf*cm, 24 ft.*lbf)
(d) Install the 2 wire harness clamps.
(e) Connect the fuel tube.
(1) Push in the fuel tube connector to the pipe until
fuel tube connector makes "click" sound.
NOTICE:
• Check if there is any damage or foreign
objects on the connected part.
• After connecting, check if the connector
and the pipe are securely connected by
pulling on them.
A127074E02
A081610E01

FU–442GR-FE FUEL – FUEL TANK
FU
INSTALLATION
1. CONNECT FUEL TANK VENT HOSE
2. INSTALL FUEL TANK TO FILLER PIPE HOSE
(a) Install a new fuel tank to filler pipe hose as shown in
the illustration.
3. INSTALL FUEL SUCTION TUBE ASSEMBLY WITH
PUMP AND GAUGE (See page FU-34)
4. INSTALL FUEL TANK MAIN TUBE SUB-ASSEMBLY
(See page FU-35)
5. INSTALL FUEL TANK ASSEMBLY
(a) Set up the fuel tank assembly to the transmission
jack.
(b) While operating the transmission jack, fasten the 4
claws for the wire harness and connect the fuel
pump connector, then install the fuel tank and the 3
fuel tank bands to the vehicle.
(c) Tighten the 6 set bolts of the 3 fuel tank bands.
Torque: 33 N*m (336 kgf*cm, 24 ft.*lbf)
(d) Install the 2 wire harness clamps.
(e) Connect the fuel tube.
(1) Push in the fuel tube connector to the pipe until
fuel tube connector makes "click" sound.
NOTICE:
• Check if there is any damage or foreign
objects on the connected part.
• After connecting, check if the connector
and the pipe are securely connected by
pulling on them.
A127074E02
A081610E01

CH–282GR-FE CHARGING – GENERATOR
CH
(e) Install the 2 bolts.
Torque: 43 N*m (438 kgf*cm, 32 ft.*lbf)
(f) Connect the generator connector to the generator
assembly.
(g) Install the generator wire with the nut.
Torque: 9.8 N*m (100 kgf*cm, 87 in.*lbf)
(h) Install the terminal cap.
(i) Connect the 2 wire harness clamps.
(j) Connect the magnetic clutch connector to the
compressor and magnetic clutch.
2. INSTALL V-RIBBED BELT (See page EM-7)
3. INSTALL RADIATOR ASSEMBLY WITH FAN SHROUD
AND FAN MOTOR (See page CO-40)
4. INSTALL NO. 1 RADIATOR SUPPORT (See page CO-
40)
5. INSTALL RADIATOR SUPPORT CUSHION (See page
CO-41)
6. REMOVE PRESSURE FEED TUBE ASSEMBLY (See
page CO-41)
7. INSTALL HEADLIGHT BRACKET RH (See page CO-
41)
8. INSTALL RADIATOR SIDE DEFLECTOR RH (See
page CO-41)
9. INSTALL HEADLIGHT ASSEMBLY RH (See page LI-
78)
10. CONNECT NO. 2 OIL COOLER OUTLET TUBE SUB-
ASSEMBLY (See page CO-41)
11. INSTALL RADIATOR UPPER SUPPORT SUB-
ASSEMBLY (See page CO-42)
12. CONNECT COOLING FAN ECU CONNECTOR (See
page CO-42)
13. INSTALL HOOD LOCK SUPPORT SUB-ASSEMBLY
(See page CO-43)
14. INSTALL HOOD LOCK ASSEMBLY (See page CO-43)
15. INSTALL HOOD LOCK RELEASE LEVER
PROTECTOR (See page CO-44)
16. CONNECT NO. 2 RADIATOR HOSE (See page CO-44)
17. CONNECT NO. 1 RADIATOR HOSE (See page CO-44)
A133866
A133865

CH–282GR-FE CHARGING – GENERATOR
CH
(e) Install the 2 bolts.
Torque: 43 N*m (438 kgf*cm, 32 ft.*lbf)
(f) Connect the generator connector to the generator
assembly.
(g) Install the generator wire with the nut.
Torque: 9.8 N*m (100 kgf*cm, 87 in.*lbf)
(h) Install the terminal cap.
(i) Connect the 2 wire harness clamps.
(j) Connect the magnetic clutch connector to the
compressor and magnetic clutch.
2. INSTALL V-RIBBED BELT (See page EM-7)
3. INSTALL RADIATOR ASSEMBLY WITH FAN SHROUD
AND FAN MOTOR (See page CO-40)
4. INSTALL NO. 1 RADIATOR SUPPORT (See page CO-
40)
5. INSTALL RADIATOR SUPPORT CUSHION (See page
CO-41)
6. REMOVE PRESSURE FEED TUBE ASSEMBLY (See
page CO-41)
7. INSTALL HEADLIGHT BRACKET RH (See page CO-
41)
8. INSTALL RADIATOR SIDE DEFLECTOR RH (See
page CO-41)
9. INSTALL HEADLIGHT ASSEMBLY RH (See page LI-
78)
10. CONNECT NO. 2 OIL COOLER OUTLET TUBE SUB-
ASSEMBLY (See page CO-41)
11. INSTALL RADIATOR UPPER SUPPORT SUB-
ASSEMBLY (See page CO-42)
12. CONNECT COOLING FAN ECU CONNECTOR (See
page CO-42)
13. INSTALL HOOD LOCK SUPPORT SUB-ASSEMBLY
(See page CO-43)
14. INSTALL HOOD LOCK ASSEMBLY (See page CO-43)
15. INSTALL HOOD LOCK RELEASE LEVER
PROTECTOR (See page CO-44)
16. CONNECT NO. 2 RADIATOR HOSE (See page CO-44)
17. CONNECT NO. 1 RADIATOR HOSE (See page CO-44)
A133866
A133865