2007 TOYOTA SIENNA Service Repair Manual

wiper size service schedule compression ratio brake pads MPG technical data

Page 657 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–3642GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
HINT:
• DTCs P2195 and P2196 indicate malfunctions related to the bank 1 A/F sensor circuit.
• DTCs P2197 and P2198 indicate malfunctions r

ES–3642GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
HINT:
• DTCs P2195 and P2196 indicate malfunctions related to the bank 1 A/F sensor circuit.
• DTCs P2197 and P2198 indicate malfunctions related to the bank 2 A/F sensor circuit.
• Bank 1 refers to the bank that includes cylinder No. 1.
• Bank 2 refers to the bank that includes cylinder No. 2.
• When any of these DTCs are set, check the A/F sensor voltage output by selecting the following menu
items on the intelligent tester: DIAGNOSIS / ENHANCED OBDII / DATA LIST / PRIMARY / AFS B1S1.
• Short-term fuel trim values can also be read using the intelligent tester.
• The ECM regulates the voltages at the A1A+, A2A+, A1A- and A2A- terminals of the ECM to a
constant level. Therefore, the A/F sensor voltage output cannot be confirmed without using the
intelligent tester.
• If an A/F sensor malfunction is detected, the ECM sets a DTC.
MONITOR DESCRIPTION
Sensor voltage detection monitor
Under the air-fuel ratio feedback control, if the A/F sensor voltage output indicates rich or lean for a certain
period of time, the ECM determines that there is a malfunction in the A/F sensor. The ECM illuminates the
MIL and sets a DTC.
Example:
If the A/F sensor voltage output is less than 2.8 V (very rich condition) for 10 seconds, despite the HO2
sensor voltage output being less than 0.6 V, the ECM sets DTC P2196. Alternatively, if the A/F sensor
voltage output is more than 3.8 V (very lean condition) for 10 seconds, despite the HO2 sensor voltage
output being 0.15 V or more, DTC P2195 is set.
Sensor current detection monitor
A rich air-fuel mixture causes a low A/F sensor current, and a lean air-fuel mixture causes a high A/F
sensor current. Therefore, the sensor output becomes low during acceleration, and it becomes high
during deceleration with the throttle valve fully closed. The ECM monitors the A/F sensor current during
fuel-cut and detects any abnormal current values.
If the A/F sensor output is 3.6 mA or more for more than 3 seconds of cumulative time, the ECM interprets
this as a malfunction in the A/F sensor and sets DTC P2195 (high-side stuck). If the A/F sensor output is
1.0 mA or less for more than 3 seconds of cumulative time, the ECM sets DTC P2196 (low-side stuck).
DTC No. DTC Detection Condition Trouble Area
P2195
P2197Conditions (a) and (b) continue for 2 seconds or more
(2 trip detection logic):
(a) Air-Fuel Ratio (A/F) sensor voltage is more than 3.8
V
(b) Heated Oxygen (HO2) sensor voltage is 0.15 V or
more• Open or short in A/F sensor (bank 1, 2 sensor 1)
circuit
• A/F sensor (bank 1, 2 sensor 1)
• A/F sensor (bank 1, 2 sensor 1) heater
• A/F sensor heater relay
• A/F sensor heater and relay circuits
• Intake system
• Fuel pressure
• Injector
•ECM
P2195
P2197While fuel-cut operation is performed (during vehicle
deceleration), air-furl ratio (A/F) sensor current is 3.6
mA or more for 3 seconds (2 trip detection logic)• A/F sensor
•ECM
P2196
P2198Conditions (a) and (b) continue for 2 seconds or more
(2 trip detection logic):
(a) A/F sensor voltage is less than 2.8 V
(b) HO2 sensor voltage is less than 0.6 V• Open or short in A/F sensor (bank 1, 2 sensor 1)
circuit
• A/F sensor (bank 1, 2 sensor 1)
• A/F sensor (bank 1, 2 sensor 1) heater
• A/F sensor heater relay
• A/F sensor heater and relay circuits
• Intake system
• Fuel pressure
•Injector
•ECM
P2196
P2198While fuel-cut operation is performed (during vehicle
deceleration), air-furl ratio (A/F) sensor current is less
than 1.4 mA for 3 seconds (2 trip detection logic)• A/F sensor
•ECM

Page 658 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–365
ES
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
All:
Sensor voltage detection monitor (Lean side malfunction P2195, P2197):
Related DTCsP2195: A/F

Page 659 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–3662GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
Sensor voltage detection monitor (Rich side malfunction P2196, P2198):
Sensor Current detection monitor P2195, P2196, P2197, P2198
TYPICAL MALF

Page 660 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–367
ES
WIRING DIAGRAM
CONFIRMATION DRIVING PATTERN
This confirmation driving pattern is used in steps 4, 7, 17, and 21 of the following diagnostic
tr

Page 661 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–3682GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
1. Connect the intelligent tester to the DLC3.
2. Turn the ignition switch to the ON position.
3. Turn the tester on.
4. Clear the DTCs (See pa

Page 662 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–369
ES
9. Drive the vehicle at a proper vehicle speed to perform fuel-cut operation (refer to the following HINT)
(Procedure "D").
HINT:
Fuel

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–369
ES
9. Drive the vehicle at a proper vehicle speed to perform fuel-cut operation (refer to the following HINT)
(Procedure "D").
HINT:
Fuel-cut is performed when the following conditions are met:
• Accelerator pedal is fully released.
• Engine speed is 2500 rpm or more (fuel injection resumes at 1000 rpm).
10. Accelerate the vehicle to 40 mph (64 km/h) or more by depressing the accelerator pedal for at least 10
seconds (Procedure "E").
11. Soon after performing procedure "J" on the previous page, release the accelerator pedal for at least 4
seconds without depressing the brake pedal, in order to execute fuel-cut control (Procedure "F").
12. Allow the vehicle to decelerate until the vehicle speed declines to less than 6 mph (10 km/h).
13. Repeat procedures from "H" through "K" in this section at least 3 times per driving cycle.
HINT:
Completion of all A/F sensor monitors is required to change the value in TEST RESULT.
CAUTION:
Strictly observe posted speed limits, traffic laws, and road conditions when performing these
driving patterns.
INSPECTION PROCEDURE
HINT:
Malfunctioning areas can be identified by performing the A/F CONTROL function provided in the ACTIVE
TEST. The A/F CONTROL function can help to determine whether the Air-Fuel Ratio (A/F) sensor, Heated
Oxygen (HO2) sensor and other potential trouble areas are malfunctioning.
The following instructions describe how to conduct the A/F CONTROL operation using an intelligent
tester.
(a) Connect the intelligent tester to the DLC3.
(b) Start the engine and turn the tester on.
(c) Warm up the engine at an engine speed of 2500 rpm for approximately 90 seconds.
(d) Select the following menu items on the tester: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / A/
F CONTROL.
(e) Perform the A/F CONTROL operation with the engine in an idling condition (press the RIGHT or LEFT
button to change the fuel injection volume).
(f) Monitor the voltage outputs of the A/F and HO2 sensors (AFS B1S1 and O2S B1S2 or AFS B2S1 and
O2S B2S2) displayed on the tester.
HINT:
• The A/F CONTROL operation lowers the fuel injection volume by 12.5% or increases the injection
volume by 25%.
• Each sensor reacts in accordance with increases and decreases in the fuel injection volume.
Standard voltage
NOTICE:
The Air-Fuel Ratio (A/F) sensor has an output delay of a few seconds and the Heated Oxygen
(HO2) sensor has a maximum output delay of approximately 20 seconds.
Tester Display (Sensor) Injection Volumes Status Voltages
AFS B1S1 or AFS B2S1 (A/F) +25% Rich Less than 3.0
AFS B1S1 or AFS B2S1 (A/F) -12.5% Lean More than 3.35
O2S B1S2 or O2S B2S2 (HO2) +25% Rich More than 0.55
O2S B1S2 or O2S B2S2 (HO2) -12.5% Lean Less than 0.4

Page 663 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–3702GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
– Following the A/F CONTROL procedure enables technicians to check and graph the voltage outputs of
both the A/F and HO2 sensors.
CaseA/F Se

Page 664 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–371
ES
– To display the graph, select the following menu items on the tester: DIAGNOSIS / ENHANCED OBD II
/ ACTIVE TEST / A/F CONTROL / USER DATA /

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–371
ES
– To display the graph, select the following menu items on the tester: DIAGNOSIS / ENHANCED OBD II
/ ACTIVE TEST / A/F CONTROL / USER DATA / AFS B1S1 and O2S B1S2 or AFS B2S1 and O2S
B2S2. Press the YES button and then the ENTER button. Then press the F4 button.
HINT:
• Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition
information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame
data can be helpful in determining whether the vehicle was running or stopped, whether the engine
was warmed up or not, whether the air-fuel ratio was lean or rich, as well as other data recorded at
the time of a malfunction.
• 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 high A/F sensor voltage could be caused by a lean air-fuel mixture. Check for conditions that
would cause the engine to run lean.
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch to the ON position.
(c) Turn the tester on.
(d) Select the following menu items: DIAGNOSIS /
ENHANCED OBD II / DTC INFO / CURRENT CODES.
(e) Read the DTCs.
Result
HINT:
If any DTCs other than P2195, P2196, P2197 or P2198
are output, troubleshoot those DTCs first.
B
A
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch to the ON position and turn the
tester on.
(c) Clear the DTCs (See page ES-39).
(d) Allow the vehicle to drive in accordance with the driving
pattern described in the CONFIRMATION DRIVING
PAT T E R N .
(e) Select the following menu items on the tester:
DIAGNOSIS / ENHANCED OBD II / MONITOR INFO /
MONITOR STATUS.
(f) Check that the status of O2S MON is COMPL.
If the status is still INCMPL, drive the vehicle according
to the driving pattern again.
HINT:
• AVAIL indicates that the component has not been
monitored yet.
1CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO P2195, P2196, P2197 OR P2198)
Display (DTC Output) Proceed to
P2195, P2196, P2197 or P2198 A
P2195, P2196, P2197 or P2198 and other DTCs B
DTC CAUSED BY RUNNING OUT OF FUEL
2READ VALUE OF INTELLIGENT TESTER (TEST VALUE OF A/F SENSOR)

Load next 8 pages

Page: < prev 1-10 ... 625-632 633-640 641-648 649-656 657-664 665-672 673-680 681-688 689-696 ... 3000 next >

garage door opener oil capacities carplay CD changer cabin filter length