2000 TOYOTA CAMRY relay

CIRCUIT OPENING RELAY INSPECTION
1. INSPECT RELAY CONTINUITY
(a) Using an ohmmeter, check that there is continuity
between terminals ST and E1.
(b) Check that there is continuity between terminals +B
and FC.
(c) Check that there is no continuity between terminals +
B and FP.
If continuity is not as specified, replace the relay.
2. INSPECT RELAY OPERATION
(a) Apply battery voltage across terminals ST and E1.
(b) Using an ohmmeter, check that there is continuity
between terminals +B and FP.
If operation is not as specified, replace the relay.
± 5S±FE ENGINEMFI/SFI SYSTEMEG1±218

9=4 ±01
ELECTRIC COOLING FAN COMPONENTS
INSPECTION
1. INSPECT ENGINE COOLANT TEMPERATURE
SWITCH
(a) Using an ohmmeter, check that there is no continuity
between the terminals when the engine coolant tem±
perature is above 93
C (199
F).
(b) Using an ohmmeter, check that there is continuity
between the terminals when the engine coolant tem±
perature is below 83
C (181
F).
If continuity is not as specified, replace the switch. 2. DISCONNECT ENGINE COOLANT TEMPERATURE
SWITCH CONNECTOR
Check that the cooling fan rotates.
If not, check the cooling fan relay, cooling fan, engine
main relay and fuse, and check for a short circuit
between the cooling fan relay and engine coolant
temperature switch.
3. CONNECT ENGINE COOLANT TEMPERATURE
SWITCH CONNECTOR
ON±VEHICLE INSPECTION
Low Temperature (Below 83

C (181
F))
1. TURN IGNITION SWITCH ªONº
Check that the cooling fan stops.
If not, check the cooling fan relay and engine coolant
temperature switch, and check for a separated con±
nector or severed wire between the cooling fan relay
and engine coolant temperature switch.
High Temperature (Above 93
C (199
F))
4. START ENGINE
(a) Raise engine coolant temperature to above 93
C
(199
F).
(b) Check that the cooling fan rotates.
If not, replace the engine coolant temperature switch.
± 5S±FE ENGINECOOLING SYSTEMEG1±262

B. Inspect relay continuity
(a) Using an ohmmeter, check that there is continuity
between terminals 3 and 5.
(b) Check that there is continuity between terminals 2
and 4.
(c) Check that there is no continuity between terminals 1
and 2.
If continuity is not as specified, replace the relay. B. Inspect relay continuity
(a) Using an ohmmeter, check that there is continuity
between terminals 1 and 2.
(b) Check that there is continuity between terminals 3
and 4.
If continuity is not as specified, replace the relay.
C. Inspect relay operation
(a) Apply battery voltage across terminals 1 and 2.
(b) Using an ohmmeter, check that there is no continuity
between terminals 3 and 4.
If operation is not as specified, replace the relay.
D. Reinstall cooling fan relay
3. INSPECT ENGINE MAIN RELAY (ªENG MAINº)
A. Remove engine main relay 2. INSPECT COOLING FAN RELAY (ºFAN')
A. Remove cooling fan relay
± 5S±FE ENGINECOOLING SYSTEMEG1±263

C. Inspect relay operation
(a) Apply battery voltage across terminals 3 and 5.
(b) Using an ohmmeter, check that there is no continuity
between terminals 2 and 4.
(c) Check that there is continuity between terminals 1
and 2.
If operation is not as specified, replace the relay.
D. Reinstall engine main relay
4. INSPECT COOLING FAN
(a) Connect battery and ammeter to the cooling fan con±
nector.
(b) Check that the cooling fan rotates smoothly, and
check the reading on the ammeter.
Standard amperage:
5.8 ± 7.4 A
COMPONENTS FOR REMOVAL AND
INSTALLATION
± 5S±FE ENGINECOOLING SYSTEMEG1±264

*5: This indicates items for which ª2 trip detection logicº is used. With this logic, when a logic malfunction is first detected, the
malfunction is temporarily stored in the ECM memory. If the same case is detected again during the second drive test, this
second detection causes the Malfunction Indicator Lamp to light up.
The 2 trip repeats the same mode a 2nd time. (However, the IG switch must be turned OFF between the 1st trip and 2nd
trip),
In the Test Mode, the Malfunction Indicator Lamp lights up the 1st trip a malfunction is detected.wopen in EGR gas temp. sensor circuit
wShort in VSV circuit for EGR
wEGR hose disconnected, valve stuck
wClogged EGR gas passage
wECM
wThrottle position sensor IDL circuit
wAccelerator pedal and cable
wPark/Neutral Position switch circuit
wA/C switch circuit
wECM wOpen or short in starter signal circuit
wOpen or short in ignition switch or starter relay circuit ECM
wOpen or short in knock sensor circuit
wKnock sensor (looseness).
wECMMalfunction
Indicator
Lamp*

Normal
Mode Trouble AreaMemory*
Test
ModeSee page
EG1±390EG1±385
EG1±396EG1±383
N.A.N.A.
N.A.
OFFOFF
± 5S±FE ENGINEDIAGNOSTIC TROUBLE CODE CHARTEG1±307

TERMINALS OF ECM
When measuring the voltage or resistance of the connector part of the ECM, always insert the test probe
into the connector from the wire harness side.
ECM (Except California specification vehicles with M/T)
Injectors (No.1 and No.3) VSV for A/C Idle upTerminal
No. Terminal
No.
Power ground Starter relayConnection
Connection
Distributor
Distributor
Distributor
Distributor
IAC valve
IAC valveSymbol Symbol
Igniter E11± 1 ISCV
± 5S±FE ENGINETERMINALS OF ECMEG1±318

wManifold absolute pressure sensor
wThrottle position sensor Manifold absolute pressure sensor
wDefogger relay
wTaillight relay Engine coolant temp. sensorData link connector 1 and 2
Data link connector 1 and 2Malfunction indicator lamp Injectors (No.2 and No.4)
No.1 vehicle speed sensorThrottle position sensor
Throttle position sensorIntake air temp. sensorEG R gas temp. sensor
Circuit opening relay
Main oxygen sensor
Data link connector 1Sub oxygen sensor Terminal
No.Terminal
No.
A/C amplifier
EFI main relayEFI main relay Sensor ground
Sensor groundA/C amplifier
Power ground
ECM groundConnection Connection
VSV for EG R
Knock sensorSymbol Symbol
Battery Igniter
± 5S±FE ENGINETERMINALS OF ECMEG1±319

*
: 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