Page 1045 of 1897
B04941
- DIAGNOSTICSENGINE
DI-1 1
167 Author: Date:
2001 AVALON (RM808U)
OK
8 Check for spark.
PREPARATION:
(a) Remove the ignition coil from the spark plug.
(b) Remove the spark plug.
(c) Install the spark plug to the ignition coil.
(d) Disconnect the injector connector.
(e) Be sure to ground the screw of the spark plug securely.
CHECK:
Check if spark occurs while the engine is being cranked.
NOTICE:
Do not crash the electrode gap.
To prevent excess fuel being injected from the injec-
tors during this test, don't crank the engine for more
than 5 - 10 seconds at a time.
NG Proceed to page IG-1, and continue to trouble-
shoot.
OK
Proceed to problem symptoms table on page
DI-22.
7. ENGINE OPERATING CONDITION
NOTICE:
The values given below for ºNormal Conditionº are representative values, so a vehicle may still be
normal even if its value varies differ from those listed here. So do not decide whether a part is faulty
or not solely according to the ºNormal Conditionº here.
(a) CARB mandated signals.
TOYOTA hand-held tester displayMeasurement ItemNormal Condition*
FUEL SYS #1
Fuel System Bank 1
OPEN: Air-fuel ratio feedback stopped
CLOSED: Air-fuel ratio feedback operating
Idling after warming up: CLOSED
FUEL SYS #2
Fuel System Bank 2
OPEN: Air-fuel ratio feedback stopped
CLOSED: Air-fuel ratio feedback operating
Idling after warming up: CLOSED
CALC LOADCalculator Load: Current intake air volume as a
proportion of max. intake air volumeIdling: 13.1 - 18.7 %
Racing without load (2,500rpm): 11.7 - 17.3 %
COOLANT TEMPEngine Coolant Temp. Sensor ValueAfter warming up: 80 - 95°C (176 - 203°F)
SHORT FT #1Short-term Fuel Trim Bank 10 ± 20 %
LONG FT #1Long-term Fuel Trim Bank 10 ± 20 %
Page 1053 of 1897
- DIAGNOSTICSENGINE IMMOBILISER SYSTEM
DI-607
763 Author: Date:
2001 AVALON (RM808U)
INSPECTION PROCEDURE
1 Delete DTC and insert all the presently available keys to check whether the en-
gine starts or not.
RESULT:
AAll keys start the engine.
BA specific key does not start the engine. In this case, DTC
(B 2796) is stored in memory.
CAll keys do not start the engine. In this case, DTC (B 2796)
is stored in memory.
A No problem at this time.
HINT:
If the result is ºAº, please confirm whether or not customers
have ever inserted the key (without transponder chip) of other
vehicle in the ignition key cylinder, and find out the cause of de-
tecting DTC.
B The transponder chip of a specific key is defec-
tive. Replace the key.
C
2 Check transponder key coil (See page BE-181).
NG Replace transponder key coil.
OK
3 Check harness and connector between transponder key amplifier and ECM.
NG Repair or replace harness and connector.
OK
Page 1058 of 1897
DI-614
- DIAGNOSTICSENGINE IMMOBILISER SYSTEM
770 Author: Date:
2001 AVALON (RM808U)
INSPECTION PROCEDURE
1 Check transponder key coil (See page BE-181).
NG Replace transponder key coil.
OK
2 Check harness and connector between transponder key amplifier and ECM.
NG Repair of replace harness and connector.
OK
3 Does the system operate normally after replacement of transponder key amplifi-
er?
Yes Replace transponder key amplifier.
No
Replace ECM.
Page 1062 of 1897
DI1AM-17
- DIAGNOSTICSENGINE IMMOBILISER SYSTEM
DI-601
757 Author: Date:
2001 AVALON (RM808U)
DIAGNOSTIC TROUBLE CODE CHART
DTC No.
(See Page)Detection ItemTrouble Area
B2795
(DI-605)Unmatched key codeKey
Unregistered key inserted before
B2796
(DI-606)No communication in immobiliser system
Key
Transponder key coil
Amplifier
Wirehaness
ECM
B2797
(DI-609)Communication malfunctionCommunication contents
Unregistered key inserted before
HINT:
To reduce the unnecessary exchange of ECM, check that a trouble occurs with the original ECM at the time
of excanging ECM and the trouble will disappear with a new ECM.
Page 1067 of 1897
DI1AP-17
DI-604
- DIAGNOSTICSENGINE IMMOBILISER SYSTEM
760 Author: Date:
2001 AVALON (RM808U)
PROBLEM SYMPTOMS TABLE
SymptomSuspect AreaSee page
Immobiliser is not set.
(Engine starts with key codes other than the registered key code.)1. ECMIN-30
Engine does not start.
1. Key
2. Wire harness
3. Transponder key coil
4. Amplifier
5. ECM*1
IN-30
DI-613
IN-30
Security indicator is always ON.
1. Security indicator
2. Wire harness
3. ECM*2
IN-30
IN-30
Security indicator is always ON.
(Although code has been registered in the automatic registration
mode, indicator is not OFF.)1. Wire harness
2 Transponder key coil
3. Amplifier
4. ECMIN-30
DI-613
IN-30
Security indicator is OFF.
(When DTC of immobiliser is output)
1. Wire harness
2 Transponder key coil
3. Amplifier
4. ECMIN-30
DI-613
IN-30
Security indicator is OFF.
(When DTC of immobiliser is not output)1. Wire harness
2. ECMIN-30
IN-30
Security indicator is abnormally blinking.1. Wire harness
2. ECMIN-30
IN-30
*1 : Check that the key which did not start the engine has been registered and that it is possible to start with
other already registered key.
*2 : Finish the automatic registration mode because the mode might still remain.
Page 1288 of 1897
EM0CC-03
P19471Compression Gauge
- ENGINE MECHANICALCOMPRESSION
EM-3
987 Author: Date:
2001 AVALON (RM808U)
COMPRESSION
INSPECTION
HINT:
If there is lack of power, excessive oil consumption or poor fuel
economy, measure the compression pressure.
1. WARM UP AND STOP ENGINE
Allow the engine to warm up to normal operating temperature.
2. REMOVE IGNITION COILS (See page IG-5)
3. REMOVE SPARK PLUGS
Using a 16 mm plug wrench, remove the 6 spark plugs.
4. CHECK CYLINDER COMPRESSION PRESSURE
(a) Insert a compression gauge into the spark plug hole.
(b) Fully open the throttle.
(c) While cranking the engine, measure the compression
pressure.
HINT:
Always use a fully charged battery to obtain engine speed of
250 rpm or more.
(d) Repeat steps (a) through (c) for each cylinder.
NOTICE:
This measurement must be done in as short a time as pos-
sible.
Compression pressure:
1,500 kPa (15.3 kgf/cm
2, 218 psi)
Minimum pressure:
1,000 kPa (10.2 kgf/cm
2, 145 psi)
Difference between each cylinder:
100 kPa (1.0 kgf/cm
2, 15 psi) or less
(e) If the cylinder compression in 1 or more cylinders is low,
pour a small amount of engine oil into the cylinder through
the spark plug hole and repeat steps (a) through (c) for
cylinders with low compression.
If adding oil helps the compression, it is likely that
the piston rings and/or cylinder bore are worn or
damaged.
If pressure stays low, a valve may be sticking or
seating is improper, or there may be leakage past
the gasket.
5. REINSTALL SPARK PLUGS
6. INSTALL IGNITION COILS (See page IG-5)
Page 1293 of 1897
P12695
A09694
P12707
P12696
- ENGINE MECHANICALCYLINDER BLOCK
EM-85
1069 Author: Date:
2001 AVALON (RM808U)
26. CHECK CONNECTING ROD THRUST CLEARANCE
Using a dial indicator, measure the thrust clearance while mov-
ing the connecting rod back and forth.
Standard thrust clearance:
0.15 - 0.30 mm (0.0059 - 0.0118 in.)
Maximum thrust clearance: 0.35 mm (0.0138 in.)
If the thrust clearance is greater than maximum, replace the
connecting rod assembly(s). If necessary, replace the crank-
shaft.
Connecting rod thickness:
20.80 - 20.85 mm (0.8189 - 0.8209 in.)
27. REMOVE CONNECTING ROD CAPS AND CHECK OIL
CLEARANCE
(a) Check the matchmarks on the connecting rod and cap are
aligned to ensure correct reassembly.
(b) Remove the 2 connecting rod cap bolts.
(c) Using the 2 removed connecting rod cap bolts, remove
the connecting rod cap and lower bearing by wiggling the
connecting rod cap right and left.
HINT:
Keep the lower bearing inserted with the connecting rod cap.
(d) Clean the crank pin and bearing.
(e) Check the crank pin and bearing for pitting and scratches.
If the crank pin or bearing is damaged, replace the bearings. If
necessary, replace the crankshaft.
Page 1295 of 1897
A05258
P12799
P12585
P12752
1011 12
1416
15
1 23 4
5
6
7 8
913
P12603
- ENGINE MECHANICALCYLINDER BLOCK
EM-87
1071 Author: Date:
2001 AVALON (RM808U)
28. REMOVE PISTON AND CONNECTING ROD AS-
SEMBLIES
(a) Using a ridge reamer, remove all the carbon from the top
of the cylinder.
(b) Push the piston, connecting rod assembly and upper
bearing through the top of the cylinder block.
HINT:
Keep the bearings, connecting rod and cap together.
Arrange the piston and connecting rod assemblies in the
correct order.
29. CHECK CRANKSHAFT THRUST CLEARANCE
Using a dial indicator, measure the thrust clearance while prying
the crankshaft back and forth with a screwdriver.
Standard thrust clearance:
0.04 - 0.24 mm (0.0016 - 0.0095 in.)
Maximum thrust clearance: 0.30 mm (0.0118 in.)
If the thrust clearance is greater than maximum, replace the
thrust washers as a set.
Thrust washer thickness:
1.930 - 1.980 mm (0.0760 - 0.0780 in.)
30. REMOVE MAIN BEARING CAPS AND CHECK OIL
CLEARANCE
(a) Uniformly loosen and remove the 8 main bearing cap
bolts and seal washers in the several passes and in the
sequence shown.
(b) Uniformly loosen and remove the 16 main bearing cap
bolts in several passes and in the sequence shown.
(c) Using a screwdriver, pry out main bearing caps. Remove
the 4 main bearing caps, lower bearings and (No.2 main
bearing cap only) 2 lower thrust washers.
