TOYOTA CAMRY 1999 Service Repair Manual

READINESS MONITOR DRIVE PATTERNS ± EG003-02 RevisedMarch 29, 2002
Page 21 of 23
DRIVE PATTERN NO. 9: Oxygen Sensor Monitor (Front and Rear O2S System)
Once
Twice 3 times 10 times
25 mph
(40 km/h)
(over 900
rpm)
Idling
IG SW off
Over
2 min
(a)Over
50 sec Over
50 sec
(b)50 sec 50 sec Over
40
sec
(c)Over
40
sec40
sec
(d)
Preconditions
The monitor will not run unless:

MIL is OFF.
Drive Pattern Procedure
Connect the OBDII Scantool to DLC3 to check monitor status and preconditions.
a. Start the engine and allow it to idle for 2 minutes or more.
b. Drive the vehicle at 25 mph (40 km/h) or more for at least 50 seconds.
Be sure engine speed remains above 900 rpm.
c. Stop the vehicle and allow the engine to idle for 40 seconds or more.
d. Perform steps ªbº and ªcº ten times.
If readiness status does not switch to ªcomplete,º ensure preconditions are met, turn the
ignition OFF, then repeat steps ªaº through ªd.º
NOTE:
The readiness status may not switch to ªcompleteº after the first drive pattern trip if a
Pending Code has been set (first trip for a two±trip DTC).

Pending Codes are available from the DTC Info Menu in Enhanced OBDII.

Pending Codes indicate a POTENTIAL problem was detected. A second trip is
needed to confirm the DTC prior to diagnosis.

Once a second trip is completed, a current DTC will be stored. Readiness
Monitor
Drive
Patterns:
Oxygen
Monitors

READINESS MONITOR DRIVE PATTERNS ± EG003-02 RevisedMarch 29, 2002
Page 22 of 23
DRIVE PATTERN NO. 10: Oxygen/Air Fuel Ratio Sensor Monitor
(Front AF Sensor and Rear O2S System)
40 ± 70 mph
(64 ± 112 km/h)
(900 ± 3,200 rpm)
Idling
IG SW offOnce Twice 10 times
Over
2 min
(a)Over
40 sec
(d) 25 mph
(40 km/h)
(over 900 rpm)
Over
3 min
(b)
Over
10 sec
(c)Over
10 sec
(e)Over
40 sec
Over
10 sec40 sec
(f)
Preconditions
The monitor will not run unless:

MIL is OFF.
Drive Pattern Procedure
Connect the OBDII Scantool to DLC3 to check monitor status and preconditions.
a. Start the engine and allow it to idle for 2 minutes or more.
b. Drive the vehicle at 40 ± 70 mph (64 ± 112 km/h) or more for at least 3 minutes.
Be sure to maintain engine speed between 900 and 3,200 rpm.
c. Stop the vehicle and allow the engine to idle for 10 seconds or more.
d. Drive the vehicle at 25 mph (40 km/h) for at least 40 seconds or more.
Be sure to maintain engine speed above 900 rpm.
e. Stop the vehicle and allow the engine to idle for 10 seconds or more.
f. Perform steps ªdº and ªeº ten times.
If readiness status does not switch to ªcomplete,º ensure preconditions are met, turn the
ignition switch OFF, then repeat steps ªaº through ªf.º
NOTE:
The readiness status may not switch to ªcompleteº after the first drive pattern trip if a
Pending Code has been set (first trip for a two±trip DTC).

Pending Codes are available from the DTC Info Menu in Enhanced OBDII.

Pending Codes indicate a POTENTIAL problem was detected. A second trip is
needed to confirm the DTC prior to diagnosis.

Once a second trip is completed, a current DTC will be stored. Readiness
Monitor
Drive
Patterns:
Oxygen
Monitors
(Continued)

READINESS MONITOR DRIVE PATTERNS ± EG003-02 RevisedMarch 29, 2002
Page 23 of 23
DRIVE PATTERN NO. 11: Oxygen/AF Sensor Heater Monitor
Idling
IG SW off
2 min
(b) 9 min
(a) 25 mph
(40 km/h)
Preconditions
The monitor will not run unless:

MIL is OFF.
Drive Pattern Procedure
Connect the OBDII Scantool to DLC3 to check monitor status and preconditions.
a. Start the engine and allow it to idle for 9 minutes.
b. Drive the vehicle at 25 mph (40 km/h) or more for at least 2 minutes.
If readiness status does not switch to ªcomplete,º ensure preconditions are met, turn the
ignition OFF, then repeat steps ªaº and ªb.º
NOTE:
The readiness status may not switch to ªcompleteº after the first drive pattern trip if a
Pending Code has been set (first trip for a two±trip DTC).

Pending Codes are available from the DTC Info Menu in Enhanced OBDII.

Pending Codes indicate a POTENTIAL problem was detected. A second trip is
needed to confirm the DTC prior to diagnosis.

Once a second trip is completed, a current DTC will be stored. Readiness
Monitor
Drive
Patterns:
Oxygen
Monitors
(Continued)

Toyota Supports ASE CertificationPage 1 of 1
EG003-03Title:
SULFUR ODOR FROM EXHAUST
Models:
All Models
Technical Service
BULLETIN
February 24, 2003

Some owners of Toyota vehicles may experience a sulfur±like or ªrotten eggº odor from
the exhaust system. Sulfur is a natural component of crude oil from which gasoline is
refined and the amount of sulfur can be decreased through the refining process. The
amount of sulfur in fuel sold in California is regulated, however gasoline sold in other
states can have substantially higher sulfur content. Sulfur content also varies
considerably between gasoline brands and locations.
All Models.
A sulfur odor emitted from the vehicle's tailpipe does not necessarily indicate that there is
an issue with the engine's running condition, but is most likely directly related to the fuel.
If the vehicle is exhibiting an excessive sulfur odor, the following checks should be
performed:
If the MIL light is ON, check for DTCs and repair as necessary.
If no trouble is found after performing the above check, recommend the customer try a
different source of fuel.
Replacement of oxygen sensors, air/fuel ratio sensors or catalytic converters will not
reduce the odor and will therefore not
be considered warrantable.
OP CODEDESCRIPTIONTIMEOFPT1T2
N/ANot Applicable to Warranty±±±±
ENGINE
Introduction
Applicable
Vehicles
Repair
Procedure
Warranty
Information

TSB
Technical Service
BULLETIN
June 11, 1999
EG004-99
Toyota Supports ASE Certification
ENGINE
Title:
DIAGNOSTIC TR OUBLE CODE P0446
Models:
'99 Avalon, Camry & Solara
Page 1of 2
Parts
InformationPREVIOUS PART NUMBER CURRENT PART NUMBER
PART NAME
N/A25852-20010 Valve, Vacuum Control with Hoses
IntroductionUnder certain driving conditions, some 1999 Model
Year Avalon, Camry and Solaras will
exhibit a false M.I.L.
ON DTC P0446.
A Vacuum Control Valve Assembly has been
developed to prevent this condition.
Production
Change
Information
º#º May be a 2 or an 8.
º*º May be any number from 0 to 9 or an X.
MODELVIN RANGE
FROM
TO
Avalon
4T1BF1#B*XU286982 4T1BF1#B*XU307913
Camry
(4 Cylinder)JT2BG2#K*X0263387 JT2BG2#K*X0301683
4T1BG2#K*XU382466 4T1BG2#K*XU446663
4T1BG2#K*XU859688 4T1BG2#K*XU890371
Camry
(6 Cylinder)JT2BF2#K*X0146113 JT2BF2#K*X0164251
4T1BF2#K*XU074015 4T1BF2#K*XU077714
4T1BF2#K*XU929580 4T1BF2#K*XU079278
Camry Solara
(4 Cylinder)2T1CG2#P*XC055458 2T1CG2#P*XC142298
2T1CG2#P*XC736206 2T1CG2#P*XC766681
Camry Solara
(6 Cylinder)2T1CF2#P*XC055463 2T1CF2#P*XC142355
2T1CF2#P*XC722383 2T1CF2#P*XC766715
Applicable Warranty*:
This repair is covered under the Toyota Basic Warranty. This warranty is in effect
for 36 months or 36,000 miles, whichever occurs first, from the vehicle
s in-service
date. Coverage is extended to 36 months or 50,000 miles, whichever occurs first, in
the states of California and Massachusetts under the California Emission Warranty.
*Warranty application is limited to correction of a problem based upon a customers specific complaint.
Warranty
InformationOPCODEDESCRIPTION
TIME
OPNT1
T2
8602L2 Vacuum Control Valve 0.5 25852-20010 99 99
NOTE:
Please enter the DTC P0446 in the Condition/Cause/Remedy Section when applying
for Warranty Reimbursement.
REVISED
TOYOTA

DIAGNOSTIC TROUBLE CODE P0446 ± EG004-99 Revised June 11, 1999
Page 2 of 2
Repair
Procedure1.Verify that the Purge System is
operating as specified in the Repair
Manual.
2.Raise vehicle on lift to gain access to
the Purge Canister and remove the two
Vacuum Lines indicated in Figure 1.
Save the Metal Clamps from the larger
hoses for reuse.
4.Verify that the Vacuum Hose Assembly
is installed as shown in Figure 3.
5.After lowering vehicle verify that the
Gas Cap is on securely.
Figure 3
Rear of Vehicle
Install the Two Clamps
removed in Step "2" here.Route Larger Hose under
Smaller Vacuum Hose.
Metal Tube attached to
side of Body.
3.Install the New Hose Assembly as
shown in Figure 2.
Reuse the Hose Clamps removed in
Step 2 on the large hose as indicated.Figure 2
Bottom of Vehicle
Drain
Hose
Thin
Hose
Clamp onto
Drain Hose Clamp must be
above Hose and
clamped onto Wire
Harness
Thick Hose to
Canister
Use Metal
Clamps here
Figure 1
Use these two clamps on
the New Hose AssemblyRemove

Toyota Supports ASE CertificationPage 1 of 2
EG004-01Title:
M.I.L. ON" P1133
Models:
'97±'99 Camry and '99 Solara
Technical Service
BULLETIN
April 20, 2001

Under certain driving conditions, some 1997 ± 1999 5S±FE California emission
specification Camrys and 1999 5S±FE California emission specification Solaras may
exhibit a M.I.L. ªONº with DTC P1133 (Air Fuel Ratio Sensor Slow Response
Malfunction). An improved Air Fuel Ratio (A/F) Sensor was developed to correct this
condition (See TSB EG006±99).
In some rare cases, P1133 may still set after the improved A/F sensor is installed. The
Engine Control Module (ECM) logic has been modified to correct this condition.
1997 ± 1999 model year Camrys with 5S±FE California emission specification.
1999 model year Solaras with 5S±FE California emission specification.
PREVIOUS PART NUMBERCURRENT PART NUMBERPART NAME
89661±3T45189661±3T452ECM, 1999 AT
89661±0668189661±06682
,
ECM, 1999 MT
89661±3T27189661±3T272
,
ECM, 1998 ATNon Immobilizer89661±0650189661±06502
,
ECM, 1998 MTNon±Immobilizer
89661±3T04189661±3T042
,
ECM, 1997 AT
89661±0637189661±06372ECM, 1997 MT
89661±3T47189661±3T472ECM, 1999 ATImmobilizer89661±3T29189661±3T292ECM, 1998 ATImmobilizer
OP CODEDESCRIPTIONTIMEOPNT1T2
895011
Varied Work Code ªNº.R & R ECM For DOHC0.4See Previous PN
Above9999
Applicable Warranty*:
This repair is covered under the Toyota Federal Emissions Warranty. This warranty is
in effect for 96 months or 80,000 miles, whichever occurs first, from the vehicle's
in-service date.
* Warranty application is limited to correction of a problem based upon a customer's specific complaint.
ENGINE
Introduction
Applicable
Vehicles
Parts
Information
Warranty
Information

M.I.L. ªONº P1133 ± EG004-01 April 20, 2001
Page 2 of 2
1. Should a M.I.L. ªONº condition with P1133 be encountered, perform diagnostic
procedures as described in the Repair Manual.
2. If the problem source cannot be identified after checking all affected areas according
to the Repair Manual, the cause may be an A/F Sensor or ECM logic malfunction. In
this case, follow the procedure in the flowchart below to determine which part needs
to be replaced.
Replace the ECM only if the A/F Sensor in the vehicle was produced after
August 31, 1999.
A/F Sensor Date Code Number:
08
U 31
Check A/F Sensor Part Number
If 89467±33011:
Check A/F Sensor
Date Code Number:
If sensor was built after
Aug. 31, 1999,
Date Code 08U31:
Replace ECM with the improved
one.
If 89467±33010:
Replace sensor with 89467±33011
If sensor was built before
Aug. 31, 1999,
Date Code 08U31:
Replace with sensor built after
Date Code 08U31.
Date Code Examples:
07U25 = July 25, 1999
02B15 = February 15, 2000
DATE CODE
PART NUMBER
Month
08 = Aug.
Day
Year
U = 1999
B = 2000
Repair
Procedure

Toyota Supports ASE CertificationPage 1 of 14
EG005-01Title:
EVAP SYSTEM OPERATION
INFORMATION
Models:
All '96 ± '01 Models
Technical Service
BULLETIN
April 27, 2001

This service bulletin provides supplemental information regarding the system design,
operation, and diagnostics of the Early Type (Non±Intrusive) and Late Type (Intrusive)
EVAP Systems found on 1996 model year and later OBD II equipped vehicles.
MODEL199619971998199920002001
AvalonEarlyEarlyEarlyEarlyLateLate
CamryEarly
(A/T only)EarlyEarlyEarlyLateLate
Camry
SolaraN/AN/AN/AEarlyLateLate
CelicaN/AN/AEarlyEarlyLateLate
CorollaN/AN/AEarlyEarlyLateLate
ECHON/AN/AN/AN/ALateLate
MR2N/AN/AN/AN/ALateLate
PriusN/AN/AN/AN/ALateLate
TercelN/AEarlyEarlyEarlyN/AN/A
4RunnerEarlyEarlyEarlyEarlyEarlyLate
Land
CruiserN/AN/AEarlyEarlyEarlyEarly
RAV4EarlyEarlyEarlyEarlyEarlyLate
SequoiaN/AN/AN/AN/AN/ALate
SiennaN/AN/AEarlyEarlyEarlyLate
TacomaEarly
(4WD only)EarlyEarlyEarlyEarlyEarly
TundraN/AN/AN/AN/AEarlyEarly
T100N/AEarlyEarlyN/AN/AN/A
This bulletin is divided into the following sections:
Early Type and Late Type EVAP System Outline
1. Early Type Description Pages 2±4. . . . . . . . . . . . . . . . . . . .
2. Late Type Description Pages 4±6. . . . . . . . . . . . . . . . . . . . .
3. ECHO Late Type Description Page 6. . . . . . . . . . . . . .
4. Late Type System Monitor Sequence Pages 6±9. . . . . .
Diagnostic Tips For Late Type EVAP System Pages 10±14. . . . . . . . . .
OP CODEDESCRIPTIONTIMEOPNT1T2
N/ANot Applicable to Warranty ±±±±
ENGINE
Introduction
Applicable
Vehicles
Contents
Warranty
Information

EVAP SYSTEM OPERATION INFORMATION ± EG005-01 April 27, 2001
Page 2 of 14
Early Type (Non±Intrusive) EVAP System Overview
There are a variety of EVAP systems in use with different monitoring strategies. It is
essential that the EVAP system be correctly identified before beginning diagnosis. The
Repair Manual is the best source for this information. The following information covers
the different systems.
The first system described is the Early Type (Non±Intrusive) EVAP System. Refer to the
Applicable Vehicles chart for applicability information.
Onboard Recovery Valve
(Fill Check Valve)Vapor
Pressure
SensorVapor
Pressure
Sensor
Three Way
VSVVacuum
Check
ValveTank Valve
AssemblyPressure
ValveCanister
To
Manifold
Vacuum
Purge
Valve
Filtered
Air
Air Drain Valve
Air Valve AssemblyAir Inlet ValveAir Inlet LineService
Port
Purge Operation
When the engine has reached
predetermined parameters (closed loop,
engine temp. above 125
F, etc.), stored
fuel vapors are purged from the canister
whenever the purge VSV is opened by
the ECM. At the appropriate time, the
ECM will turn on the purge VSV.
The ECM will change the duty ratio cycle
of the purge VSV thus controlling purge
flow volume. Purge flow volume is
determined by manifold pressure and the
duty ratio cycle of the purge VSV.
Atmospheric pressure is allowed into the
canister to ensure that purge flow is
constantly maintained whenever purge
vacuum is applied to the canister (see
Figure 1).
Early Type
System
Description
Figure 1. Purge OperationFresh Air Inlet
Purge VSV