2007 TOYOTA SIENNA Service Repair Manual

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Page 689 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–3962GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
CONFIRMATION DRIVING PATTERN
HINT:
Performing this confirmation driving pattern will activate the A/F sensor response monitor.
1. Connect the i

Page 690 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–397
ES
6. Check that RES RATE B1S1 and RES RATE B2S1 is INCOMPL.
7. Start the engine and warm it up (Procedure "A").
8. Drive the vehicle at b

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–397
ES
6. Check that RES RATE B1S1 and RES RATE B2S1 is INCOMPL.
7. Start the engine and warm it up (Procedure "A").
8. Drive the vehicle at between 25 mph and 75 mph (40 km/h and 120 km/h) for 3 minutes. However, the
vehicle should be driven at a constant speed (Procedure "B").
9. Check the monitor result values on the intelligent tester by selecting the following menu items:
DIAGNOSIS / ENHANCED OBD II / MONITOR INFO / MONITOR RESULT /RES RATE B1S1 and
RES RATE B2S1 / Enter.
10. If the values indicated on the tester do not change, perform READINESS MONITOR DRIVE
PATTERN for the A/F sensor and the heated oxygen sensor (See page ES-22).
HINT:
Completion of all A/F sensor monitors is required to change the value in test result.
11. Note the value of the Monitor Result.
12. Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DTC INFO / PENDING CODES.
13. Check if any DTCs (any pending DTCs) are set.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
Related DTCsP2A00: A/F sensor (Bank 1) slow response
P2A03: A/F sensor (Bank 2) slow response
Required Sensors / Components (Main) A/F sensor
Required Sensors / Components (Related) Vehicle speed sensor, Crankshaft position sensor
Frequency of Operation Once per driving cycle
Duration 10 to 15 seconds
MIL Operation 2 driving cycles
Sequence of Operation None
The monitor will run whenever these DTCs are not
presentP0031, P0032, P0051, P0052 (A/F Sensor heater Sensor 1), P0100, P0101, P0102,
P0103 (MAF Sensor), P0110, P0112, P0113 (IAT Sensor), P0115, P0116, P0117,
P0118 (ECT Sensor), P0120, P0121, P0122, P0123, P0220, P0222, P0223, P2135
(TP Sensor), P0125 (Insufficient ECT for Closed Loop), P0171, P0172 (Fuel
System), P0300, P0301, P0302, P0303, P0304, P0305, P0306 (Misfire), P0335
(CKP Sensor), P0340 (CMP Sensor), P0450, P0451, P0452, P0453 (EVAP System),
P0500 (VSS), P2196, P2198 (A/F Sensor (Rationality))
Active A/F control Performing
Active A/F control is performed when the following
conditions are met-
Battery voltage 11 V or more
Engine coolant temperature 75
C (167F) or more
Idle OFF
Engine RPM Less than 4000 rpm
A/F sensor status Activated
Fuel-cut OFF
Engine load 10 to 70%
G034992E04

Page 691 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–3982GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
TYPICAL MALFUNCTION THRESHOLDS
MONITOR RESULT
Refer to CHECKING MONITOR STATUS (See page ES-19).
WIRING DIAGRAM
Refer to DTC P2195 (See page ES

Page 692 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–399
ES
– Following the A/F CONTROL procedure enables technicians to check and graph the voltage outputs of
both the A/F and HO2 sensors.
– To dis

Page 693 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–4002GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
• A low A/F sensor voltage could be caused by a rich air-fuel mixture. Check for conditions that would
cause the engine to run rich.
• A h

Page 694 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–401
ES
(a) Disconnect the A5 or A6 A/F sensor connector.
(b) Measure the resistance according to the value(s) in the
table below.
Standard resistance

Page 695 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–4022GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
(a) Disconnect the A5 or A6 A/F sensor connector.
(b) Turn the ignition switch to the ON position.
(c) Measure the voltage according to the val

Page 696 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–403
ES
NG
OK
NEXT
(a) Read the DTCs using the intelligent tester.
(b) Select the following menu items: DIAGNOSIS /
ENHANCED OBD II / DTC INFO / PENDI

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