1999 TOYOTA CAMRY OBD port

FI0534
S05335
Hand±held Tester
DLC3
± DIAGNOSTICSAUTOMATIC TRANSAXLE
DI±135
2. INSPECT DIAGNOSIS (NORMAL MODE)
(a) Check the MIL.
(1) The MIL comes on when the ignition switch is turned
ON and the engine is not running.
HINT:
If the MIL does not light up, troubleshoot the combination meter
(See page BE±4).
(2) When the engine is started, the MIL should go off.
If the lamp remains on, the diagnosis system has
detected a malfunction or abnormality in the sys-
tem.
(b) Check the DTC.
NOTICE:
(hand±held tester only): When the diagnostic system is
switched from normal mode to check mode, it erases all
DTCs and freeze frame data recorded in normal mode. So
before switching modes, always check the DTCs and
freeze frame data, and note them down.
(1) Prepare an OBD II scan tool (complying with SAE
J1978) or hand±held tester.
(2) Connect the OBD II scan tool or hand±held tester
to DLC3 at the lower portion of the instrument panel.
(3) Turn the ignition switch ON and turn the OBD II scan
tool or hand±held tester switch ON.
(4) Use the OBD II scan tool or hand±held tester to
check the DTCs and freeze frame data and note
them down (For operating instructions, see the
OBD II scan tool's instruction book).
(5) See page DI±145 to confirm the details of the DTCs.
NOTICE:
When simulating symptoms with an OBD II scan tool (ex-
cluding hand±held tester) to check the DTCs, use normal
mode. For codes on the DTCs chart subject to º2 trip detec-
tion logicº, turn the ignition switch off after the symptoms
have been simulated the 1st time. Then repeat the simula-
tion process again. When the program has DTCs, the DTCs
are recorded in the ECM.

IN±42
± INTRODUCTIONTERMS
42 Author: Date:
HO2SHeated Oxygen SensorHeated Oxygen Sensor (HO2S)
IACIdle Air ControlIdle Speed Control (ISC)
IATIntake Air TemperatureIntake or Inlet Air Temperature
ICMIgnition Control Module±
IFIIndirect Fuel InjectionIndirect Injection (IDL)
IFSInertia Fuel±Shutoff±
ISCIdle Speed Control±
KSKnock SensorKnock Sensor
MAFMass Air FlowAir Flow Meter
MAPManifold Absolute PressureManifold Pressure
Intake Vacuum
MCMixture Control
Electric Bleed Air Control Valve (EBCV)
Mixture Control Valve (MCV)
Electric Air Control Valve (EACV)
MDPManifold Differential Pressure±
MFIMultiport Fuel InjectionElectronic Fuel Injection (EFI)
MILMalfunction Indicator LampCheck Engine Lamp
MSTManifold Surface Temperature±
MVZManifold Vacuum Zone±
NVRAMNon±Volatile Random Access Memory±
O2SOxygen SensorOxygen Sensor, O2 Sensor (O2S)
OBDOn±Board DiagnosticOn±Board Diagnostic System (OBD)
OCOxidation Catalytic ConverterOxidation Catalyst Convert (OC), CCo
OPOpen LoopOpen Loop
PAIRPulsed Secondary Air InjectionAir Suction (AS)
PCMPowertrain Control Module±
PNPPark/Neutral Position±
PROMProgrammable Read Only Memory±
PSPPower Steering Pressure±
PTOXPeriodic Trap OxidizerDiesel Particulate Filter (DPF)
Diesel Particulate Trap (DPT)
RAMRandom Access MemoryRandom Access Memory (RAM)
RMRelay Module±
ROMRead Only MemoryRead Only Memory (ROM)
RPMEngine SpeedEngine Speed
SCSuperchargerSupercharger
SCBSupercharger BypassE±ABV
SFISequential Multiport Fuel InjectionElectronic Fuel Injection (EFI), Sequential Injection
SPLSmoke Puff Limiter±
SRIService Reminder Indicator±
SRTSystem Readiness Test±
STScan Tool±
TBThrottle BodyThrottle Body
TBIThrottle Body Fuel InjectionSingle Point Injection
Central Fuel Injection (Ci)
TCTurbochargerTurbocharger
TCCTorque Converter ClutchTorque Converter

IN±40
± INTRODUCTIONTERMS
HO2S
Heated Oxygen SensorHeated Oxygen Sensor (HO2S)
IACIdle Air ControlIdle Speed Control (ISC)
IATIntake Air TemperatureIntake or Inlet Air Temperature
ICMIgnition Control Module±
IFIIndirect Fuel InjectionIndirect Injection (IDL)
IFSInertia Fuel±Shutoff±
ISCIdle Speed Control±
KSKnock SensorKnock Sensor
MAFMass Air FlowAir Flow Meter
MAPManifold Absolute PressureManifold Pressure
Intake Vacuum
MCMixture Control
Electric Bleed Air Control Valve (EBCV)
Mixture Control Valve (MCV)
Electric Air Control Valve (EACV)
MDPManifold Differential Pressure±
MFIMultiport Fuel InjectionElectronic Fuel Injection (EFI)
MILMalfunction Indicator LampCheck Engine Lamp
MSTManifold Surface Temperature±
MVZManifold Vacuum Zone±
NVRAMNon±Volatile Random Access Memory±
O2SOxygen SensorOxygen Sensor, O2 Sensor (O2S)
OBDOn±Board DiagnosticOn±Board Diagnostic System (OBD)
OCOxidation Catalytic ConverterOxidation Catalyst Convert (OC), CCo
OPOpen LoopOpen Loop
PAIRPulsed Secondary Air InjectionAir Suction (AS)
PCMPowertrain Control Module±
PNPPark/Neutral Position±
PROMProgrammable Read Only Memory±
PSPPower Steering Pressure±
PTOXPeriodic Trap OxidizerDiesel Particulate Filter (DPF)
Diesel Particulate Trap (DPT)
RAMRandom Access MemoryRandom Access Memory (RAM)
RMRelay Module±
ROMRead Only MemoryRead Only Memory (ROM)
RPMEngine SpeedEngine Speed
SCSuperchargerSupercharger
SCBSupercharger BypassE±ABV
SFISequential Multiport Fuel InjectionElectronic Fuel Injection (EFI), Sequential Injection
SPLSmoke Puff Limiter±
SRIService Reminder Indicator±
SRTSystem Readiness Test±
STScan Tool±
TBThrottle BodyThrottle Body
TBIThrottle Body Fuel InjectionSingle Point Injection
Central Fuel Injection (Ci)
TCTurbochargerTurbocharger
TCCTorque Converter ClutchTorque Converter

Toyota Supports ASE CertificationPage 1 of 23
EG003-02Title:
READINESS MONITOR DRIVE PATTERNS
Models:
All '96 ± '02
Technical Service
BULLETIN
March 29, 2002

TSB REVISION NOTICE:
The information updated in this TSB is red
and underlined.
The On±Board Diagnostic (OBDII) system is designed to monitor the performance of
emission±related components and report any detected abnormalities in the form of
Diagnostic Trouble Codes (DTCs). Since the various components need to be monitored
during different driving conditions, the OBDII system is designed to run separate
monitoring programs called Readiness Monitors. Many state Inspection and
Maintenance (I/M) programs require that vehicles complete their Readiness Monitors
prior to beginning an emissions test.
The current status of the Readiness Monitors can be seen by using the Toyota Diagnostic
Tester with version 9.0 software (or newer), or a generic OBDII Scantool.
To view the Readiness Monitor status using the Toyota Diagnostic Tester, select ªMonitor
Statusº from the Enhanced OBDII Menu.
A status of ªcompleteº indicates that the necessary conditions have been met to run the
performance tests for the related Readiness Monitor.
The Readiness Monitor will be reset to ªincompleteº if:

ECU has lost power (battery or fuse).

DTCs have been cleared.

The conditions for running the Readiness Monitor have not been met.
In the event that any Readiness Monitor shows ªincomplete,º follow the appropriate
Readiness Monitor Drive Pattern to change the readiness status to ªcomplete.º
Refer to the Readiness Monitor Drive Pattern Application Table to determine which
drive pattern should be followed.
SECTIONPAGE(S)
Readiness Monitor Drive Pattern Application Tables3±9
Readiness Monitor Drive Patterns
1EGR Monitor (All Except 1FZ±FE Engine)10
2EGR Monitor (For 1FZ±FE Engine)11
3Catalyst Monitor (O2S Type)12
4Catalyst Monitor (AF Sensor Type)13
5EVAP Monitor (Internal Pressure Monitor/Non±Intrusive Type)14±15
6EVAP Monitor (Vacuum Pressure Monitor/Intrusive Type)16±17
7EVAP Monitor (Without Leak Detection)18
8EVAP Monitor (For Prius)19±20
9Oxygen Sensor Monitor (Front and Rear O2S System)21
10Oxygen/AF Sensor Monitor (Front AF Sensor and Rear O2S System)22
11Oxygen/AF Sensor Heater Monitor23

All 1996 ± 2002 model year Toyota vehicles.
OP CODEDESCRIPTIONTIMEOPNT1T2
N/ANot Applicable to Warranty±±±±
ENGINE
Introduction
Contents
Applicable
Vehicles
Warranty
Information

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 11 of 14
Diagnostic Process Flow Chart
(Continued on following page)
PRELIMINARY CHECK
Fuel level should be between
1/4 and 3/4
Visually inspect for presence
of Fuel/Gas Cap
DO NOT TIGHTEN OR REMOVE!
PRESSURIZE EVAP SYSTEM (System Integrity Check)
This test checks for leaks in the canister and fuel tank sides. The CCV and Air Inlet Lines will be checked
separately.
A) Clamp the air drain hose on the charcoal canister with the supplied hose pliers from the EVAP System
Pressure Test Kit.
B) Locate the vapor pressure sensor. If the vapor pressure sensor has two hoses connected to it,
disconnect the hose between the air drain hose fitting at the vapor pressure sensor and plug the hose.
C) Connect the pressure supply hose from the Pressure Test Kit to the Green EVAP System Service Port
located on the EVAP Purge VSV line in the engine compartment.
D) Using the directions on the inside of the EVAP System Pressure Test Kit lid, pressurize the EVAP
system. Once pressurized, turn off the pump and seal the system (Pressure Hold Switch to ªClosedº
and Vent Switch to ªClosed).
E) After 30 seconds, note the pump pressure gauge reading and the Scan Tool vapor pressure
sensor reading.
F) Compare the readings to one of the four conditions listed below and proceed as directed.
DO NOT PROCEED! NG
OK
SCAN TOOL SETUP
A) Connect Scan Tool to DLC3 on vehicle.
B) Go to the SETUP menu and select UNIT CONVERSION.
C) Under VAPOR PRESSURE, Select ABS for absolute pressure, and mmHg for millimeters of mercury.
This is to match the Repair Manual specifications.
D) Go back to FUNCTION SELECT menu and select ENHANCED OBD II.
E) Select NORMAL MODE. Then select CURRENT DATA and USER SELECT.
F) Using the arrow key, select VAPOR PRESS from the DATA LIST and select YES.
G) Press ENTER. You will now be able to monitor the Vapor Pressure Sensor reading.
START
If vehicle is ECHO, go directly to ªECHO Canister and Tank Leak Checkº on page 14.
If vehicle is not ECHO, follow the flow chart below.
Diagnostic
Tips for Late
Type EVAP
System
(Continued)

DIAGNOSTIC TESTER CONTROLLER AREA NETWORK (CAN) INTERFACE ± SS001-03September 8, 2003
Page 2 of 2
Program Card With Version
10.2a (or Later) Software
CAN Interface Module Kit
(P/N 01002744)
Grey
CAN Interface Module
CAN Interface Module Is Used for
ALL DLC3/J1962 CommunicationThe Original DLC3 (OBDII
Connector P/N 02001643)
Cable Is No Longer Used. Black DLC Cable
(P/N 02001637)
Vehicle Interface
Module (VIM)
DLC1
(Check Connector)
CableDLC2
(TDCL)
Cable
1. Remove the original DLC3 Cable and store it in the Diagnostic Tester storage case.
2. Connect the CAN Interface Module to the DLC Cable.
3. Use the Diagnostic Tester with the CAN Module installed for all DLC3/J1962 based
vehicle communication.
4. If you experience problems with the Diagnostic Tester or CAN Interface Module,
please contact Toyota Special Service Tool Customer Support at 1±800±933±8335.
NOTE:
There is no need to remove the CAN Interface Module when working with non±CAN
systems or older software versions (Version 10.1a or earlier). The Diagnostic Tester
will communicate with all DLC3/J1962 based systems with the CAN Interface
Module installed.
For DLC1 and DLC2 communication you must continue to use the Vehicle Interface
Module (VIM). Installation
Procedure

Toyota Supports ASE CertificationPage 1 of 43
SS002-03Title:
O2S TEST RESULTS (MODE 05)
Models:
All '96 ± '03, '04 Corolla, ECHO, Matrix, Sienna
& Scion xA & xBTechnical Service
BULLETIN
December 17, 2003
This Service Bulletin contains Oxygen Sensor (O2S) Monitor threshold values for all
models from 1996 to 2003 and some 2004 models. Starting in 2004, the O2S Monitor
threshold values can be found in the repair manual. These values are used when
analyzing the O2S test results to determine the O2S condition.
All 1996 ± 2003 model year Toyota vehicles.
2004 model year Corolla, ECHO, Matrix and Sienna vehicles.
2004 model year Scion xA and xB vehicles.
Checking O2S Test Results
To view O2S test results, the O2S Monitor must be completed and the test results must
be checked within the same key cycle. If the ignition key is cycled OFF, the O2S test
results will be set to the minimum or maximum limits, and all test results will be erased.
The O2S test results are stored in the ECU (SAE term: Powertrain Control Module/PCM)
when the monitor is completed. The test results are static and will not change once the
monitor is complete.
The process for checking O2S test results is described in the following three basic steps:
1. Completing the O2S Readiness Monitor (page 2).
2. Accessing O2S Test Results (page 3).
3. Comparing O2S Test Results to Failure Thresholds (page 4).
SPECIAL SERVICE TOOLS (SSTs)PART NUMBERQUANTITY
Toyota Diagnostic Tester Kit*
(or any OBDII Scantool)
010012711
12 Megabyte Diagnostic Tester Program Card
with version 10.1a Software (or later)*01002593-0051
* Essential SSTs.
NOTE:
Additional Diagnostic Tester Kits, Program Cards or other SSTs may be ordered by
calling SPX/OTC at 1-800-933-8335.
OP CODEDESCRIPTIONTIMEOFPT1T2
N/ANot Applicable to Warranty±±±±
SPECIAL SERVICE TOOLS
Introduction
Applicable
Vehicles
Function
Description
Required
SSTs
Warranty
Information