lug pattern TOYOTA SIENNA 2007 Service Repair Manual

ES–2082GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
7. Drive the vehicle several times with the conditions, such as engine rpm and engine load, shown in
MISFIRE RPM and MISFIRE LOAD in the Data List.
HINT:
• In order to store misfire DTCs, it is necessary to operate the vehicle for the period of time shown in
the table below, using the MISFIRE RPM and MISFIRE LOAD in the Data List.
8. Check whether misfires have occurred by checking DTCs and freeze frame data.
HINT:
Do not turn the ignition switch off until the stored DTC(s) and freeze frame data have been recorded.
When the ECM returns to normal mode (default), the stored DTC(s), freeze frame data and other data
will be erased.
9. Record the DTC(s), freeze frame data and misfire counts.
10.Turn the ignition switch OFF and wait for at least 5 seconds.
INSPECTION PROCEDURE
HINT:
• If any DTCs other than misfire DTCs are output, troubleshoot those DTCs first.
• Read freeze frame data using the intelligent tester or Techstream. Freeze frame data records the
engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help
determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel
ratio was lean or rich, and other data from the time the malfunction occurred.
• If the misfire does not recur when the vehicle is brought to the workshop, reproduce the conditions
stored in the ECM as freeze frame data.
• If the misfire still cannot be reproduced even though the conditions stored in the ECM as freeze frame
data have been reproduced, one of the following factors is considered to be a possible cause of the
problem:
(a) There was insufficient fuel volume in the tank.
(b) Improper fuel is used.
(c) The spark plugs have been contaminated.
• After finishing repairs, check the misfire counts of the cylinders (CYL #1, #2, #3, #4, #5, #6).
• Be sure to confirm that no misfiring cylinder DTCs are set again by conducting the confirmation driving
pattern after finishing repairs.
• For 6 and 8 cylinder engines, the ECM intentionally does not set the specific misfiring cylinder DTCs at
high engine RPM. If misfires occur only in high engine RPM areas, only DTC P0300 is set.
In the event of DTC P0300 being present, perform the following operations:
(a) Clear the DTC (See page ES-39).
(b) Start the engine and conduct the confirmation driving pattern.
(c) Read the misfiring rates of each cylinder or DTC(s) using the tester.
(d) Repair the cylinder(s) that has a high misfiring rate or is indicated by the DTC.
(e) After finishing repairs, conduct the confirmation driving pattern again, in order to verify that DTC
P0300 is not set.
• When one of SHORT FT #1, LONG FT #1, SHORT FT #2 or LONG FT #2 in the freeze frame data is
outside the range of +/-20%, the air-fuel ratio may be Rich (-20% or less) or Lean (+20% or more).
• When the COOLANT TEMP in the freeze frame data is less than 75
C (167F), the misfire have
occurred only while warming up the engine.
Engine RPM Duration
Idling 3.5 minutes or more
1000 3 minutes or more
2000 1.5 minutes or more
3000 1 minute or more

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–219
ES
OK
(a) Turn the ignition switch to the ON position.
(b) Measure the voltage according to the value(s) in the
table below.
Standard voltage
NG
OK
(a) Check the injector injection (whether fuel volume is high
or low, and whether injection pattern is poor) (See page
FU-16).
NG
OK
(a) Change the installed spark plug to a spark plug that
functions normally.
(b) Perform a spark test.
CAUTION:
Always disconnect all injector connectors.
NOTICE:
Do not crank the engine for more than 2 seconds.
(1) Install the spark plug to the ignition coil and connect
the ignition coil connector.
(2) Disconnect the injector connector.
(3) Ground the spark plug.
(4) Check if sparks occur while the engine is being
cranked.
27INSPECT ECM TERMINAL OF MISFIRING CYLINDER (#10, #20, #30, #40, #50 AND /OR #60
VOLTAGE)
A162489E04
Tester Connection Specified Condition
#10 (E11-2) - E01 (E9-7) 9 to 14 V
#20 (E11-3) - E01 (E9-7) 9 to 14 V
#30 (E11-4) - E01 (E9-7) 9 to 14 V
#40 (E11-5) - E01 (E9-7) 9 to 14 V
#50 (E11-6) - E01 (E9-7) 9 to 14 V
#60 (E11-7) - E01 (E9-7) 9 to 14 V
REPAIR OR REPLACE HARNESS OR
CONNECTOR (BATTERY - ECM)
28CHECK FUEL INJECTOR OF MISFIRING CYLINDER
REPLACE FUEL INJECTOR ASSEMBLY
REPLACE ECM
29CHANGE TO NORMAL SPARK PLUG AND CHECK SPARK OF MISFIRING CYLINDER