2000 TOYOTA CAMRY check engine

IAC VALVE INSPECTION
INSPECT IAC VALVE OPERATION
(a) Connect the positive (+) lead from the battery to
terminal +B and negative (±) lead to terminal ISCC,
and check that the valve is closed.
IAC VALVE REMOVAL
(See Components for Removal and Installation)
1. REMOVE THROTTLE BODY
(See steps 1 to 6 on pages EG1±207 and 208)
IAC VALVE INSTALLATION
(See Components for Removal and Installation)
1. INSTALL IAC VALVE
(a) Place a new gasket on the throttle body. (b) Connect the positive (+) lead from the battery to
terminal +B and negative (±) lead to terminal ISCO,
and check that the valve is open. 2. REMOVE IAC VALVE
Remove the 4 screws, IAC valve and gasket.
± 5S±FE ENGINEMFI/SFI SYSTEMEG1±214

2. INSPECT EFI MAIN RELAY
A. Inspect relay continuity
(a) Using an ohmmeter, check that there is continuity
between terminals 1 and 2.
(b) Check that there is no continuity between terminals 3
and 5.
If continuity is not as specified, replace the relay.
B. Inspect relay operation
(a) Apply battery voltage across terminals 1 and 2.
(b) Using an ohmmeter, check that there is continuity
between terminals 3 and 5.
If operation is not as specified, replace the relay.
3. REINSTALL EFI MAIN RELAY
EFI MAIN RELAY INSPECTION
7. REMOVE EFI MAIN RELAY
EFI MAIN RELAY
± 5S±FE ENGINEFE ENGINE ± MFI/SFI SYSTEMEG1±216

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

VSV INSPECTION (California)
1. REMOVE VSV
(a) Disconnect the following connectors and hoses:
(1) VSV for EGR (A) connector
(2) VSV for fuel pressure control (B) connector
(3) Vacuum hose (from EGR valve) from port E of
VSV (A)
(4) Vacuum hose (from port ªQº of EGR vacuum
modulator) from port G of VSV (A)
(5) Vacuum hose (from fuel pressure regulator) from
port E of VSV (B)
(6) Vacuum hose (from air intake chamber) from port
G of VSV (B)
(b) Remove the bolt and VSV assembly.
2. INSPECT VSV
A. Inspect VSV for open circuit
Using an ohmmeter, check that there is continuity
between the terminals.
Resistance (Cold):
33±39

If there is no continuity, replace the VSV.
VSV FOR EGR
± 5S±FE ENGINEMFI/SFI SYSTEMEG1±223

VSV INSPECTION (Except California)
1. REMOVE VSV
(a) Disconnect the following connector and hoses:
(1) VSV connector
(2) Vacuum hose (from EGR valve) from port E of
VSV
(3) Vacuum hose (from port ªaº of EGR vacuum
modulator) from port G of VSV
(b) Remove the bolt and VSV.
2. INSPECT VSV
A. Inspect VSV for open circuit
Using an ohmmeter, check that there is continuity
between the terminals.
Resistance (Cold):
33±39

If there is no continuity, replace the VSV. B. Inspect VSV for ground
Using an ohmmeter, check that there is no continuity
between each terminal and the body.
If there is continuity, replace the VSV.
(b) Apply battery voltage across the terminals.
(c) Check that air flows from port E to the filter.
If operation is not as specified, replace the VSV.
3. REINSTALL VSV C. Inspect VSV operation
(a) Check that air flows from port E to port G.
± 5S±FE ENGINEMFI/SFI SYSTEMEG1±224

B. Inspect VSV for ground
Using an ohmmeter, check that there is no continuity
between each terminal and the body.
If there is continuity,. replace the VSV.
(b) Apply battery voltage across the terminals.
(c) Check that air flows from port E to the filter.
If operation is not as specified, replace the VSV.
3. REINSTALL VSVC. Inspect VSV operation
(a) Check that air flows from port E to port G.
± 5S±FE ENGINEMFI/SFI SYSTEMEG1±225

VSV INSPECTION
1. REMOVE VSV
(a) Disconnect the following connectors and hoses:
(1) VSV for EGR (A) connector
(2) VSV for fuel pressure control (B) connector
(3) Vacuum hose (from EGR valve) from port E of VSV (A)
(4) Vacuum hose (from port ªaº of EGR vacuum
modulator) from port G of VSV (A)
(5) Vacuum hose (from fuel pressure regulator) from
port E of VSV (B)
(6) Vacuum hose (from air intake chamber) from port
G of VSV (B)
(b) Remove the bolt and VSV assembly.
2. INSPECT VSV
A. Inspect VSV for open circuit
Using an ohmmeter, check that there is continuity
between the terminals.
Resistance (Cold):
33±39

If there is no continuity, replace the VSV.
VSV FOR FUEL PRESSURE CONTROL
(California only)
± 5S±FE ENGINEMFI/SFI SYSTEMEG1±226

B. Inspect VSV for ground
Using an ohmmeter, check that there is no continuity
between each terminal and the body.
If there is continuity, replace the VSV.
(b) Apply battery voltage across the terminals.
(c) Check that air flows from pipe E to the filter.
If operation is not as specified, replace the VSV. C. Inspect VSV operation
(a) Check that air flows from pipe E to pipe G.
3. REINSTALL VSV
± 5S±FE ENGINEMFI/SFI SYSTEMEG1±227