TOYOTA CAMRY 2000 Service Repair Manual

*
: Only for California specification vehicles.
*: Except California specification vehicles with A/T.wStoplight switch
w Stoplight
w Park/neutral position switch wDefogger relay
wTaillight relay
Park/neutral position switchPark/neutral position switch
Park/neutral position switch
Malfunction indicator lampData link connector 1 and 2 Data link connector 1 and 2No.1 vehicle speed sensor
Throttle position sensor
Throttle position sensorEGR gas temp. sensor
Circuit opening relay Data link connector 1Data link connector 2
Cruise control ECUO/D main switch Terminal
No.Terminal
No.Connection
A/C amplifier
EFI main relay Sensor ground
Sensor ground
A/C amplifierEFI main relay
Knock sensorStarter relay Connection Symbol
Symbol
Battery
± 5S±FE ENGINETERMINALS OF ECMEG1±321

IG switch ON and apply vacuum to the
throttle opener. Throttle valve fully closed. ECM (Except California specification vehicles with M/T)
STANDARD VALUE OF EC
Idling, Engine coolant temp, 80C (176F) IG switch 0 N
Throttle valve fully closed
IG switch ON
Throttle valve fully openIG switch ON
Throttle valve fully open
Idling, Intake air temp. 20C (68F)
Pulse generation
(See page EG1±347)
Pulse generation
(See page EG1±336)
Pulse generation
(See page EG1±336) Pulse generation
(See page EG1±347)
TERMINALS
Symbols (Terminals No.)
STD Voltage (V)
Pulse generation Wiring Color
IG switch ON IG switch ON
IG switch ONIG switch ON
IG switch ONCondition
Below 2.0Always
Idling IdlingIdling
IdlingIdlingIdling
± 5S±FE ENGINESTANDARD VALUE OF ECM TERMINALSEG1±322

Maintain engine speed at 2,500 rpm for
2 minutes after warming up then return to
idling
Maintain engine speed at 2,500 rpm for
2 minutes after warming up
IG switch ON
Rotate driving wheel slowly Pulse generation
(See page EG1±355)
Pulse generation
(See page EG1±389)
Pulse generation
(See page EG1±380) Symbols (Terminals No.)
A/C switch ON (at idling)
Idling, A/C switch OFF Idling, A/C switch ON STD Voltage (V)
A/C switch OFF Wiring Color
IG switch ONIG switch ONIG switch ON
IG switch ONlG switch ONCondition
Idling
Idling
± 5S±FE ENGINESTANDARD VALUE OF ECM TERMINALSEG1±323

ECM (California specification vehicles and except California specification vehicles with A/T)
STANDARD VALUE OF ECM TERMINALS (Cont'd)
*
: Only for California specification vehicles.
*: Except California specification vehicles with A/T.IG switch ON and apply vacuum to the
throttle opener. Throttle valve fully closed.
Idling, Engine coolant temp. 80C (176F) IG switch ON
Throttle valve fully closedIG switch ON
Throttle valve fully open
IG switch ON
Throttle valve fully open
Idling, Intake air temp. 20C (68F)
Pulse generation
(See page EG1±410)
Pulse generation
(See page EG1±341)
Pulse generation
(See page EG1±336) Pulse generation
(See page EG1±341) Pulse generation
(See page EG1±347) Pulse generation
(See page EG1±347)
Pulse generation
(See page EG1±336) Symbols (Terminals No.)*3
STD Voltage (V) Wiring Color
IG switch ON IG switch ONIG switch ON
IG switch ONlG switch ONCondition
Below 2.0Always
Idling Idling
Idling Idling
Idling Idling
Idling
Idling
± 5S±FE ENGINESTANDARD VALUE OF ECM TERMINALSEG1±324

Maintain engine speed at 2,500 rpm for
2 minutes after warming up then return
to idling
*
: Only for California specification vehicles.Maintain engine speed at 2,500 rpm for
2 minutes after warming up
IG switch ON
Other shift position in ªPº, ªNº position
IG switch ON
Shift position in ªPº, ªNº position
IG switch ON
0/D main switch pushed out
Restarting at high engine coolant temp.
IG switch ON
O/D main switch pushed inIG switch ON
Rotate driving wheel slowly Pulse generation
(See page EG1±389)
Pulse generation
(See page EG1±380) Pulse generation
(See page EG1±355) Symbols (Terminals No.)*
A/C switch ON (At idling)
Idling, A/C switch OFFIdling, A/C switch ON STD Voltage (V)
A/C switch OFF Wiring Color
IG switch ON IG switch ONIG switch O NIG switch ON
IG switch ON
IG switch ONIG switch ONCondition
IdlingIdling
*:
± 5S±FE ENGINESTANDARD VALUE OF ECM TERMINALSEG1±325

REFERENCE VALUE OF ECM DATA
*1: If the engine coolant temp, sensor circuit is open or shorted, the ECM assumes an engine coolant temp, value of 80
C (176
F).
*2: When feedback control is forbidden, 0 V is displayed,
*3: A/T only.Closed throttle position
Wide open throttle
From closed throttle position to wide open throttle
When shifting from ªPº or ªNº position into a position
other than ªPº or ªNºEngine idling at normal operating temp.
increase engine loadEngine cold to hot
Engine idling at normal operating temp.
RPM stable at 2,500 rpm with normal operating temp.
PRM stable at 2,500 rpm with normal operating temp.RPM kept stable (Comparison with tachometer)
During driving (Comparison with speedometer)Below 5

Above 70

Gradually increases Approx. 180 ~ 280 mm Hg
Gradually increases
Engine idling at normal operating temp.Engine idling at normal operating temp.Gradually decreases
Approx. 2 ~ 5 msecs
REFERENCE VALUE
Engine at normal operating temp. 75 ± 95
C (185 ± 203
F) *1
Closed throttle position
RICH LEAN is repeated Increase engine speed
No large differences Inspection condition
Gradually increases
No great changes
2.50+ 1.25 V *2
During cranking
PNP SIGNAL *3A/C switch ON ENGINE SPEEDReference value
TARGET A/F LVEHICLE SPD
A/F FB LEFT
A/C SIGNALSTA SIGNAL
CTP SIGNAL30~60% INJECTOR
THROTTLEIAC DUTYIGNITION
G EAR MAPItem
OxLECT
HINT: ECM data can be monitored by TOYOTA hand±held
tester.
1. Hook up the TOYOTA hand±held tester to the DLC2.
2. Monitor ECM data by following the prompts on the tester
screen.
Please refer to the TOYOTA hand±held tester operator's
manual for further details.
± 5S±FE ENGINEREFERENCE VALUE OF ECM DATAEG1±326

MATRIX CHART OF PROBLEM SYMPTOMS
When the malfunction code is not confirmed in the diagnostic trouble code check and the problem still can
not be confirmed in the basic inspection, then proceed to this step and perform troubleshooting according
to the numbered order given in the table below.
*: Except California specification vehicles.
Park/Neutral position switch circuitManifold absolute pressure sensor circuit
VSV circuit for fuel pressure control
Ignition signal circuit (Spark test)
After acceleration pedal depressed
After acceleration pedal released
Switch condition signal circuit
Muffler explosion (after fire)No initial combustion
Back up power source circuit
Hesitation/Poor accelerationNo complete combustion
ECM power source circuit
Starter and Starter relay
Engine control module
High engine idle speed
Low engine idle speedUnder normal condition
During A/C operationEngine does not crank
A/C cut control circuit Starter signal circuit
Soon after starting
Fuel system circuit
When N to D shiftIncorrect first idle
Poor
Driveability
IAC valve circuit Difficult to
start
Injector circuit
Rough idling
Does not
start
Compression
Suspect area
Cold engine
Ignition coil Engine Stall
EG R system
Hot engine
Poor Idling
Spark plug
A/T faultylG±10,30*
IG±11,30 Distributor
Symptom
ST±19,21
See page
IG±8,28* IG±6,26*
Hunting
Surging
EG1±400
EG1±410 EG1±390
EG1±403
EG1±408
EG1±415
EG1±419EG1±383EG1±372
EG1±428EG1±396
EG1 ±424
AX1±68 EG1±23
IN±36
± 5S±FE ENGINEMATRIX CHART OF PROBLEM SYMPTOMSEG1±327

LOCATION OF CONNECTORS
Location of Connectors in Engine Compartment
± 5S±FE ENGINELOCATION OF CONNECTORSEG1±328

± 5S±FE ENGINELOCATION OF CONNECTORSEG1±329

Location of Connectors in Instrument Panel
± 5S±FE ENGINELOCATION OF CONNECTORSEG1±330