2005 TOYOTA AVENSIS engine coolant

A78423
20V
/Division Injector Signal Waveform
20V
/Division
GND
100 msec./Division (Idling)(Magnification)
GND
1 msec./Division (Idling)
Injection Duration
– DIAGNOSTICSSFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
05–119
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)DTC No.
DTC Detection ConditionTrouble Area
P0300Misfiring of random cylinders is detected
Open or short in engine wire harness
Connector connection
Vacuum hose connection
Ignition system
Injector
Fuel pressure
Mass air flow meter
Engine coolant temperature sensor
Compression pressure
Valve clearance
Valve timing
PCV hose connection
PCV hose
ECM
P0301
P0302
Misfiring of each cylinder is detected
Open or short in engine wire harness
Connector connection
Vacuum hose connection
Ignition system
Injector
Fuel pressure
Mass air flow meter
P0303
P0304Misfiring of each cylinder is detectedEngine coolant temperature sensor
Compression pressure
Valve clearance
Valve timing
PCV hose connection
PCV hose
ECM
HINT:
When the DTCs for misfiring cylinders are recorded repeatedly but no random misfire DTC is recorded, it
indicates that the misfires have been set and recorded at different times.
Reference: Inspection using the oscilloscope
With the engine idling, check the waveform between terminals #10 to #40 and E01 of the ECM connectors.
ItemContents
Terminal#10 to #40 – E01
Equipment Setting20V/Division, 100 or 1 ms/Division
ConditionIdling
HINT:
The correct waveform is as shown.

05–122
–
DIAGNOSTICS SFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
INSPECTION PROCEDURE
HINT:
If any DTCs other than the misfire DTCs are set simultaneously, first troubleshoot them.
If a misfire does not occur when the vehicle is brought to the workshop, a mi\
sfire can be confirmed by
reproducing the condition of the freeze frame data. Also, after finishing repairs, \
confirm that misfires
do not recur (see the confirmation driving pattern).
Read freeze frame data using the intelligent tester II. Freeze frame dat\
a record 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.
On 6 and 8 cylinder engines, misfiring cylinders cannot be identified at\
high engine speed and only
a general misfire DTC P0300 is stored instead of the individual misfiring\
cylinder DTCs (P0301 to
P0308).
If a misfire starts in a high engine speed area or a misfire occurs only i\
n a high engine speed area, only
DTC P0300 may be stored.
When only a general misfire DTC P0300 is stored:
Erase the general misfire DTC from the ECM using the intelligent tester \
II.
Start the engine and perform the confirmation driving pattern.
Check the value of the misfire ratio for each cylinder. Or check the DTC(s).
Perform repairs on the cylinder that has a high misfire ratio. Or repair the cy\
linder indicated by the DTC.
After finishing repairs, perform the confirmation driving pattern again and c\
onfirm that no misfire oc-
curs.
When either of Short FT #1 and Long FT #1 in the freeze frame data is over the range of 20 %, there
is a possibility that the air–fuel ratio is becoming rich (–20 % \
or less) or lean (+20 % or more).
When Coolant Temp in the freeze frame data is less than 80
C (176
F), there is a possibility that mis-
fires occur only during engine warm–up.
If a misfire cannot be reproduced, the following reasons may apply: 1) th\
e vehicle has low fuel, 2) im-
proper fuel is being used, and 3) the ignition plug has been contaminated.
Be sure to check the misfire counter value after repairs.
1 CHECK OTHER DTC OUTPUT(IN ADDITION TO MISFIRE DTCS)
(a) Connect the intelligent tester II to the DLC3.
(b) Turn the ignition switch to ON and turn the intelligent tester ll ON.
(c) Select the following menu items: Powertrain / Engine and ECT / DTC.
(d) Read DTCs. Result:
Display (DTC Output)Proceed To
P0300, P0301, P0302, P0303 and/or P0304A
P0300, P0301, P0302, P0303 or P0304 and other DTCsB
HINT:
If any DTCs other than P0300, P0301, P0302, P0303
or P0304 are output, troubleshoot those DTCs.
B GO TO RELEVANT DTC CHART (See page 05–27 )
A

//
3020
10
5
3
02040
0.1 1
0.3 0.2
0.5 2
60 80 100–20
(–4) (104) (140) (176)(32) (68) (212)
A81700
Ohmmeter
Acceptable
Temperature C ( F)
Resistance k Ω
–
DIAGNOSTICS SFI SYSTEM (1ZZ–FE/3ZZ–FE)(From February, 2004)
05–131
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
18 INSPECT ENGINE COOLANT TEMPERATURE SENSOR(RESISTANCE)
(a) Remove the engine coolant temperature sensor.
(b) Measure the resistance between the terminals.
Standard:
Tester ConnectionSpecified Condition
1 – 22.32 to 2.59 k Ω at 20 C (68 F)
1 – 20.310 to 0.326 k Ω at 80 C (176 F)
NOTICE:
When checking the engine coolant temperature sensor in
water, be careful not to allow water to get in contact with the
terminals. After the check, dry the sensor.
HINT:
Alternative procedure: Connect an ohmmeter to the installed
engine coolant temperature sensor and read the resistance.
Use an infrared thermometer to measure the engine tempera-
ture in the immediate vicinity of the sensor. Compare these val-
ues against the resistance/temperature graph. Change the en-
gine temperature (warm up or allow to cool down) and repeat
the test.
NG REPLACE ENGINE COOLANT TEMPERATURE SENSOR
OK
19 PROCEED TO STEP APPROPRIATE FOR NUMBER OF MISFIRING CYLINDERS(REFER TO RESULT OF STEP 4)
HINT:
If the result of step 4 is ”1 or 2 cylinders”, proceed to A.
If the result of step 4 is ”3 cylinders or more”, proceed to B.
B GO BACK TO STEP 4
A
CHECK FOR INTERMITTENT PROBLEMS ( See page 05–9)

05KAT–02
– DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E) (From February, 2004)05–227
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
MONITOR DRIVE PATTERN
1. MONITOR DRIVE PATTERN FOR ECT TEST
(a) Perform this drive pattern as one method to simulate the detection conditions of the ECT malfunctions.
(The DTCs may not be detected due the actual driving conditions. And some codes may not be de-
tected through this drive pattern).
HINT:
Preparation for driving

Warm up the engine sufficiently. (Engine coolant temperature is 60
C (140
F) or higher)

Drive the vehicle when the atmospheric temperature is –10
C (14
F) or higher. (Malfunction is not
detected when the atmospheric temperature is –10
C (14
F) or less)
Driving note

Drive the vehicle through all gears.
Stop → 1st → 2nd → 3rd → 4th → 4th (lock–up ON).

Perform engine brake test in the S position.
While driving in the 4(S) position and 4th gear lock–up, shift into the ”–” position and down–shift from
4th to 3rd, 3rd to 2nd, 2nd to 1st.
Check that the engine brake performs properly whenever down–shift takes place.

Repeat the above driving pattern three times or more.
NOTICE:

When using the intelligent tester II, monitor status can be found in the ”Power train / Engine and
ECT / Data List”.

In the event that the drive pattern must be interrupted (possibly due to traffic conditions or other
factors) the drive pattern can be resumed and, in most cases, the monitor can be completed.
CAUTION:
Perform this drive pattern on a level road as much as possible and strictly observe the posted speed
limits and traffic laws while driving.

05KAM–02
NE
THW
VTA1, 2
VC
SPD
STP
THONTS1
S2
SLT
SB
SL
W
SIL
TC ECMCrankshaft Position Sensor
Engine Coolant
Temperature Sensor
Throttle Position Sensor
Park/Neutral Position Switch
Speed Sensor
Skid Control ECU
Combination Meter
Input Turbine Speed Sensor
(Speed Sensor NT)
Stop Lamp Switch Assy
ATF (Automatic Transmission
Fluid) Temperature SensorShift Solenoid Valve S1
Shift Solenoid Valve S2
Shift Solenoid Valve SLT
MIL
(Malfunction Indicator Lamp)
DLC3
(Data Link Connector 3) Shift Solenoid Valve SB
Shift Solenoid Valve SL NSW
P, R, N, D
SFTU
SFTD Transmission Control Switch
(Transmission Floor Shift Assy)SPT
Kick Down SwitchKD
*1
*1: LHD
ST
Shift Solenoid Valve ST
– DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E) (From February, 2004)05–213
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
SYSTEM DIAGRAM
The configuration of the electronic control system in the U341E automatic transaxles is as shown in the fol-
lowing chart.

141UL–01
A93669
A60622
14–32–
ENGINE MECHANICAL CYLINDER HEAD GASKET (1ZZ–FE/3ZZ–FE)(From
February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
REPLACEMENT
1. DISCHARGE FUEL SYSTEM PRESSURE (See Pub. No. RM1018E on page 11–1)
2. REMOVE RADIATOR SUPPORT OPENING COVER (See page 14–9)
3. REMOVE ENGINE ROOM COVER SIDE (See page 14–9)
4. REMOVE FRONT WHEEL RH
5. REMOVE ENGINE UNDER COVER SUB–ASSY NO.1 (See page 14–9)
6. REMOVE ENGINE UNDER COVER RH (See page 14–9)
7. DRAIN ENGINE COOLANT (See page 16–5)
8. REMOVE CYLINDER HEAD COVER NO.2
(a) Remove the 2 nuts and 2 clips, then detach cylinder headcover No.2.
9. REMOVE AIR CLEANER HOSE NO.1
(a) Disconnect the VSV connector.
(b) Disconnect fuel vapor feed No. 1 hose from the VSV.
(c) Disconnect the fuel vapor feed hose from the VSV.
(d) Disconnect the ventilation hose from air cleaner hose No. 1.
(e) Loosen the 2 air cleaner hose clamp bolts, then remove the air cleaner h\
ose.
10. DISCONNECT WATER BY–PASS HOSE
(a) Disconnect the water by–pass hose from the throttle body.
11. DISCONNECT WATER BY–PASS HOSE NO.2
(a) Disconnect water by–pass hose No. 2 from the throttle body.
12. REMOVE EFI FUEL PIPE CLAMP (See Pub. No. RM1018E on page 11–11)
13. DISCONNECT FUEL TUBE SUB–ASSY (See Pub. No. RM1018E on page 11–11)
14. DISCONNECT UNION TO CONNECTOR TUBE HOSE
(a) Disconnect the union to connector tube hose from the hose to hose tube.
15. DISCONNECT RADIATOR HOSE INLET
(a) Disconnect the radiator hose inlet from the cylinder head.
16. DISCONNECT HEATER INLET WATER HOSE
(a) Disconnect the heater inlet water hose from the cylinder head. 17. REMOVE FAN AND GENERATOR V BELT
(a) Turn the V–ribbed belt tensioner clockwise slowly andloosen it. Remove the fan and generator V belt, then put
back the V–ribbed belt tensioner carefully.

A96566
A93669
14–46–
ENGINE MECHANICAL CYLINDER HEAD GASKET (1ZZ–FE/3ZZ–FE)(From
February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
76. INSTALL V–RIBBED IDLER ASSY NO.1
(a) Install the tube and idler with the nut and bolt.
Torque: 39 N ⋅m (400 kgf ⋅cm, 29 ft ⋅lbf)
77. INSTALL FAN AND GENERATOR V BELT
(See Pub. No. RM1018E on page 14–5)
78. INSTALL AIR CLEANER HOSE NO.1
Torque: 1.5 N ⋅m (15 kgf ⋅cm, 13 in. ⋅lbf)
79. INSTALL CYLINDER HEAD COVER NO.2
(a) Install the cylinder head cover with the 2 nuts and 2 clips.
Torque: 7.0 N ⋅m (71 kgf ⋅cm, 62 in. ⋅lbf)
80. INSTALL FRONT WHEEL RH
Torque: 103 N ⋅m (1,050 kgf ⋅cm, 76 ft ⋅lbf)
81. ADD ENGINE COOLANT (See page 16–5)
82. INSPECT COMPRESSION (See Pub. No. RM1018E on page 14–1)
SST 09992–00500
83. INSPECT CO/HC (See Pub. No. RM1018E on page 14–1)
84. INSPECT IGNITION TIMING (See Pub. No. RM1018E on page 14–1)
SST 09843–18040
85. CHECK FOR ENGINE COOLANT LEAKS (See page 16–1)
86. CHECK FOR ENGINE OIL LEAKS
87. CHECK FOR EXHAUST GAS LEAKS

A78516
A93669
14–10–
ENGINE MECHANICAL PARTIAL ENGINE ASSY (1ZZ–FE/3ZZ–FE)(From
February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
7. REMOVE ENGINE UNDER COVER RH
(a) Remove the 6 screws and 3 clips, then detach the engine under cover.
8. DRAIN ENGINE COOLANT (See page 16–5)
9. DRAIN ENGINE OIL
(a) Install a new gasket and the drain plug after draining engine oil.
Torque: 37 N ⋅m (377 kgf ⋅cm, 27 ft ⋅lbf)
10. DRAIN MANUAL TRANSAXLE OIL (M/T TRANSAXLE) (See Pub. No. RM1018E on p\
age 41–15)
11. DRAIN AUTOMATIC TRANSAXLE FLUID (A/T TRANSAXLE)
(See Pub. No. RM1018E on page 40–42)
12. REMOVE CYLINDER HEAD COVER NO.2
(a) Remove the 2 nuts and 2 clips, then detach cylinder head
cover No.2.
13. REMOVE AIR CLEANER ASSEMBLY WITH HOSE (See page 10–6)
14. REMOVE AIR CLEANER FILTER ELEMENT SUB–ASSY
15. REMOVE AIR CLEANER CASE SUB–ASSY
(a) Remove the 3 bolts and air cleaner case.
16. DISCONNECT RADIATOR HOSE INLET
(a) Disconnect the radiator hose inlet from the radiator.
17. DISCONNECT RADIATOR HOSE OUTLET
(a) Disconnect the radiator hose outlet from the radiator.
18. DISCONNECT OIL COOLER INLET HOSE NO.1 (A/T TRANSAXLE)
(a) Disconnect the oil cooler inlet hose from the radiator.
19. DISCONNECT OIL COOLER OUTLET HOSE NO.1 (A/T TRANSAXLE)
(a) Disconnect the oil cooler outlet hose from the radiator.
20. DISCONNECT OIL COOLER INLET TUBE NO.1 (A/T TRANSAXLE)
(a) Disconnect the oil cooler inlet tube from the radiator.
21. DISCONNECT OIL COOLER OUTLET TUBE NO.1 (A/T TRANSAXLE)
(a) Disconnect the oil cooler outlet tube from the radiator.