2007 TOYOTA SIENNA Service Repair Manual

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Page 665 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–3722GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
• COMPL indicates that the component is functioning
normally.
• INCMPL indicates that the component is
malfunctioning.
(g) Select the fol

Page 666 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–373
ES
HINT:
• If the output voltage of the A/F sensor remains at
approximately 3.3 V (see Malfunction Condition
diagram) under any conditions, in

Page 667 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–3742GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
• The A/F sensor is a current output element;
therefore, the current is converted into a voltage
inside the ECM. Measuring the voltage at t

Page 668 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–375
ES
B
A
(a) Has the vehicle run out of fuel in the past?.
NO
YES
(a) Disconnect the A5 or A6 A/F sensor connector.
(b) Measure the resistance accor

Page 669 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–3762GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
(a) Remove the A/F relay from No. 6 engine room relay
block.
(b) Measure the resistance according to the value(s) in the
table below.
Standar

Page 670 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–377
ES
(g) Reconnect the ECM connector.
(h) Reconnect the A/F sensor connector.
NG
OK
(a) Check the intake system for vacuum leakage.
OK:
No leakage f

Page 671 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–3782GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
NG
OK
(a) Replace the air fuel ratio sensor (for 2WD model (See
page EC-19) or 4WD model (See page EC-26)).
NEXT
NEXT
(a) Read the DTCs using

Page 672 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–379
ES
NEXT
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch to the ON position and turn the
tester on.
(c) Read the DTCs

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