2007 TOYOTA SIENNA wiring

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–445
ES
DESCRIPTION
When the ignition switch is turned to the ON position, the battery voltage is applied to terminal IGSW of
the ECM. The ECM MREL output signal causes a current to flow to the coil, closing the contacts of the EFI
relay and supplying power to terminal +B of the ECM.
If the ignition switch is turned off, the ECM holds the EFI relay ON for a maximum of 2 seconds to allow for
the initial setting of the throttle valve.
WIRING DIAGRAM
ECM Power Source Circuit
A136865E04

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–453
ES
WIRING DIAGRAM
A163161E02

ES–4602GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
WIRING DIAGRAM
INSPECTION PROCEDURE
(a) Check if there is pressure in the fuel inlet hose.
HINT:
If there is fuel pressure, the sound of fuel flowing will be
heard.
1CHECK FUEL PUMP
A162641E03

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–469
ES
DESCRIPTION
The system detects the ignition switch's starting signal (STSW) and then supplies current to the starter
until the ECM judges that the engine has started successfully. The purpose is to reduce the holding time
of the ignition key.
WIRING DIAGRAM
Refer to DTC P0617 (See page ES-320).
INSPECTION PROCEDURE
(a) When starting the engine, check whether the starter
motor starts.
OK:
Engine is cranking.
Cranking Holding Function Circuit
1CHECK CRANKING
A166695E01

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–479
ES
WIRING DIAGRAM
INSPECTION PROCEDURE
(a) Connect the intelligent tester to the DLC3.
(b) Start the engine and turn the intelligent tester on.
(c) Select the following menu items: DIAGNOSIS /
ENHANCED OBD II / ACTIVE TEST / INTAKE CTL
VSV1. Operate the VSV for AICS.
OK:
Operational noise can be heard.
OK
NG
(a) Disconnect the V14 VSV for ACIS connector.
(b) Apply battery voltage between the terminals of the air
intake valve connector.
(c) Check the air intake valve operation.
OK:
Operational noise can be heard.
(d) Reconnect the VSV for ACIS connector.
NG
1PERFORM ACTIVE TEST BY INTELLIGENT TESTER (OPERATE VSV FOR ACIS)
A136867E19
PROCEED TO NEXT CIRCUIT INSPECTION
SHOWN IN PROBLEM SYMPTOMS TABLE
2CHECK INTAKE AIR CONTROL VALVE (OPERATION)
E121181E09
REPLACE INTAKE AIR SURGE TANK

ES–4862GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
DESCRIPTION
The MIL (Malfunction Indicator Lamp) is used to indicate vehicle malfunctions detected by the ECM.
When the ignition switch is turned to the ON position, power is supplied to the MIL circuit, and the ECM
provides the circuit ground which illuminates the MIL.
The MIL operation can be checked visually. When the ignition switch is first turned to the ON position, the
MIL should be illuminated and should then turn off. If the MIL remains illuminated or is not illuminated,
conduct the following troubleshooting procedure using the intelligent tester.
WIRING DIAGRAM
INSPECTION PROCEDURE
(a) Turn the ignition switch to the ON position.
(b) Check the illumination of the MIL.
Result
MIL Circuit
1CHECK THAT MIL IS ILLUMINATED
A136868E04
Result Proceed to
MIL remains illuminated (Even after ignition switch is turned to ON position and several
seconds have passed, MIL still remains illuminated)A
MIL remains off (Does not illuminate at all)B
MIL illuminates for several seconds, but turns off after engine is started C

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–33
ES
TERMINALS OF ECM
1. SFI SYSTEM
HINT:
The standard normal voltage between each pair of the
ECM terminals is shown in the table below. The
appropriate conditions for checking each pair of the
terminals are also indicated.
The check results should be compared with the standard
normal voltage for that pair of terminals, listed in the
"Specified Condition" column.
The illustration above can be used as a reference to
identify the ECM terminal locations.
G035613E30
Symbols (Terminal No.) Wiring Colors Terminal Descriptions ConditionsSpecified
Condition
+B (E4-1) - E1 (E11-1) B-R - BR Power source of ECM Ignition switch ON 9 to 14 V
+B2 (E4-2) - E1 (E11-1) B-R - BR Power source of ECM Ignition switch ON 9 to 14 V
BATT (E4-3) - E1 (E11-1) B-W - BRBattery (for measuring the
battery voltage and for the
ECM memory)Always 9 to 14 V
VPMP (E4-5) - E1 (E11-1) W - BRVent valve operation
signal (built into pump
module)Ignition switch ON 9 to 14 V
MPMP (E4-6) - E1 (E11-1) G - BRVacuum pump operation
signal (built into pump
module)Vacuum pump OFF 0 to 3 V
MPMP (E4-6) - E1 (E11-1) G - BRVacuum pump operation
signal (built into pump
module)Vacuum pump ON 9 to 14 V
+BM (E4-7) - E1 (E11-1) R - BRPower source of ETCS
throttle motorAlways 9 to 14 V
MREL (E4-8) - E1 (E11-1) B-W - BR EFI relay operation signal Ignition switch ON 9 to 14 V
IGSW (E4-9) - E1 (E11-1) B-O - BRIgnition switch signal Ignition switch ON 9 to 14 V
FC (E4-10) - E1 (E11-1) V-G - BRC/OPEN relay operation
signal (fuel pump control)Ignition switch ON 9 to 14 V
STP (E4-15) - E1 (E11-1) G-W - BR Stop light switch signal Brake pedal depressed 7.5 to 14 V
STP (E4-15) - E1 (E11-1) G-W - BR Stop light switch signal Brake pedal released Below 1.5 V
ST1- (E4-16) - E1 (E11-1) LG-R - BRStop light switch signal
(opposite to STP terminal)Ignition switch ON, Brake pedal
depressedBelow 1.5 V
ST1- (E4-16) - E1 (E11-1) LG-R - BRStop light switch signal
(opposite to STP terminal)Ignition switch ON, Brake pedal
released7.5 to 14 V
VPA (E4-18) - EPA (E4-20) L-Y - R-BAccelerator pedal position
sensor signal (for engine
control)Ignition switch ON, Accelerator
pedal fully released0.5 to 1.1 V

ES–342GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
VPA (E4-18) - EPA (E4-20) L-Y - R-BAccelerator pedal position
sensor signal (for engine
control)Ignition switch ON, Accelerator
pedal fully depressed2.6 to 4.5 V
VPA2 (E4-19) - EPA2 (E4-21) W-R - LGAccelerator pedal position
sensor signal (for sensor
malfunction detection)Ignition switch ON, Accelerator
pedal fully released1.2 to 2.0 V
VPA2 (E4-19) - EPA2 (E4-21) W-R - LGAccelerator pedal position
sensor signal (for sensor
malfunction detection)Ignition switch ON, Accelerator
pedal fully depressed3.4 to 5.0 V
EPA (E4-20) - VPA (E4-18) R-B - L-YAccelerator pedal position
sensor signal (for engine
control)Ignition switch ON, Accelerator
pedal fully released0.5 to 1.1 V
EPA (E4-20) - VPA (E4-18) R-B - L-YAccelerator pedal position
sensor signal (for engine
control)Ignition switch ON, Accelerator
pedal fully depressed2.6 to 4.5 V
EPA2 (E4-21) - VPA2 (E4-19) LG - W-RAccelerator pedal position
sensor signal (for sensor
malfunction detection)Ignition switch ON, Accelerator
pedal fully released1.2 to 2.0 V
EPA2 (E4-21) - VPA2 (E4-19) LG - W-RAccelerator pedal position
sensor signal (for sensor
malfunction detection)Ignition switch ON, Accelerator
pedal fully depressed3.4 to 5.0 V
PPMP (E4-22) - E2 (E9-28) B - BRPressure sensor signal
(built into pump module)Ignition switch ON 3 to 3.6 V
TC (E4-23) - E1 (E11-1) P-B - BR Terminal TC of DLC3 Ignition switch ON 9 to 14 V
VCPA (E4-26) - EPA (E4-20) GR-R - R-BPower source of
accelerator pedal position
sensor (for VPA)Ignition switch ON 4.5 to 5.0 V
VCP2 (E4-27) - EPA2 (E4-21) B-R - LGPower source of
accelerator pedal position
sensor (for VPA2)Ignition switch ON 4.5 to 5.0 V
TACH (E5-1) - E1 (E11-1) B-O - BREngine speed signal (for
combination meter)IdlingPulse generation
(see waveform 11)
SPD (E5-8) - E1 (E11-1) V-W - BRVehicle speed signal from
combination meterIgnition switch ON, driving wheel
rotated slowlyPulse generation
(see waveform 8)
W (E5-30) - E1 (E11-1) B-Y - BRMalfunction Indicator
Lamp (MIL) operation
signalIgnition switch ON Below 3.0 V
W (E5-30) - E1 (E11-1) B-Y - BRMalfunction Indicator
Lamp (MIL) operation
signalIdling 9 to 14 V
CANH (E5-33) - CANL (E5-
34)B - WCAN communication
circuitIgnition switch off 54 to 69
CANL (E5-34) - CANH (E5-
33)W - BCAN communication
circuitIgnition switch off 54 to 69
E1 (E11-1) - Body ground BR - -Earth (ground) circuit of
ECMAlways Below 1 V
#10 (E11-2) - E01 (E9-7)
#20 (E11-3) - E01 (E9-7)
#30 (E11-4) - E01 (E9-7)
#40 (E11-5) - E01 (E9-7)
#50 (E11-6) - E01 (E9-7)
#60 (E11-7) - E01 (E9-7)L - W-B
R - W-B
B - W-B
W - W-B
B-W - W-B
G - W-BFuel injector operation
signalIgnition switch ON 9 to 14 V
#10 (E11-2) - E01 (E9-7)
#20 (E11-3) - E01 (E9-7)
#30 (E11-4) - E01 (E9-7)
#40 (E11-5) - E01 (E9-7)
#50 (E11-6) - E01 (E9-7)
#60 (E11-7) - E01 (E9-7)L - W-B
R - W-B
B - W-B
W - W-B
B-W - W-B
G - W-BFuel injector operation
signalIdlingPulse generation
(see waveform 3)
PSW (E11-10) - E1 (E11-1) R-W - BR P/S pressure switch signal Ignition switch ON 9 to 14 V Symbols (Terminal No.) Wiring Colors Terminal Descriptions ConditionsSpecified
Condition