2000 TOYOTA CAMRY check engine

A00305
ON
ON EGR Gas Temp.
Sensor
EGR Gas Temp.
SensorECM
ECM
5 V
5 V
E2
E2
1
2
1
2
THG
THG18 13
E10
E10
E10E10
13
18
± DIAGNOSTICSENGINE (1MZ±FE)
DI±295
530 Author: Date:
2 Check for open or short in harness or ECM.
For open circuit
PREPARATION:
(a) Disconnect the EGR gas temp. sensor connector.
(b) Connect the sensor wire harness terminals together.
(c) Turn the ignition switch ON.
CHECK:
Read EGR gas temperature on the TOYOTA hand±held tester.
OK:
EGR gas temperature : 159.35C (318.75F)
For short circuit
PREPARATION:
Disconnect the EGR gas temp. sensor connector.
CHECK:
Read EGR gas temperature on the TOYOTA hand±held tester.
OK:
EGR gas temp. : 3.15C (37.65F)
OK Confirm good connection at sensor.
If OK, check and replace EGR gas temp. sensor.
NG

A02048
ECM
THG E2ON
1
2E0
E107THG
E2 13
18 EGR Gas Temp. Sensor
5 V
A02043
ECM ON
EGR Gas Temp. Sensor
E10
5 V
THG
E2
DI±296
± DIAGNOSTICSENGINE (1MZ±FE)
531 Author: Date:
3 Check for open or short in harness or ECM.
For open circuit
PREPARATION:
(a) Remove the glove compartment (See page SF±73).
(b) Connect between terminals THG and E2 of the ECM con-
nectors.
HINT:
EGR gas temp. sensor connector is disconnected. Before
checking, do a visual check and contact pressure check for the
ECM connector (See page IN±31).
CHECK:
Read EGR gas temperature on the TOYOTA hand±held tester.
OK:
EGR gas temperature : 159.35C (318.75F)
For short circuit
PREPARATION:
(a) Remove the glove compartment (See page SF±73).
(b) Disconnect the E10 connector of ECM.
CHECK:
Read EGR gas temperature on the TOYOTA hand±held tester.
OK:
EGR gas temperature: 3.15C (37.65F)
OK Repair or replace harness.
NG
Confirm connection at ECM.
If OK, check and replace ECM.

A02507BE6653
A02839
ON
Air
E
GAir
G
FFE VSV is ON VSV is OFF
± DIAGNOSTICSENGINE (1MZ±FE)
DI±297
532 Author: Date:
4 Check connection and blockage of vacuum hose (See page EC±2).
NG Repair or replace vacuum hose.
OK
5 Check VSV for EGR.
PREPARATION:
Select the ACTIVE TEST mode on the TOYOTA hand±held
tester.
CHECK:
Check operation VSV, when it is operated by the TOYOTA
hand±held tester.
OK:
VSV is ON:
Air from pipe E is flowing out through pipe F and G.
VSV is OFF:
Air from pipe E is flowing out through pipe G.
OK Go to step 8.
NG
6 Check operation of VSV for EGR (See page SF±56).
NG Replace VSV for EGR.
OK
Check for open in harness and connector
between engine room J/B and ECM.

S05410
Vacuum
EGR Valve
DI±298
± DIAGNOSTICSENGINE (1MZ±FE)
533 Author: Date:
7 Check EGR system (See page EC±11).
NG Repair or replace.
OK
8 Check EGR valve.
PREPARATION:
(a) Disconnect the vacuum hose from EGR valve.
(b) Start the engine.
CHECK:
Check whether the engine stall when apply vacuum to EGR
valve.
OK:
Engine runs rough or stall.
NG Repair or replace EGR valve.
OK
9 Check vacuum control valve (See page EC±11).
NG Replace vacuum control valve.
OK
Check and replace ECM (See page IN±31).

P23871
EGR Gas Temp. Sensor
Connector
± DIAGNOSTICSENGINE (1MZ±FE)
DI±299
534 Author: Date:
OBDII scan tool (excluding TOYOTA hand±held tester)
1 Check resistance of EGR gas temp. sensor.
PREPARATION:
Disconnect the EGR gas temp. sensor connector.
CHECK:
Measure resistance between terminals of the EGR gas temp.
sensor connector.
OK:
Resistance: 2.5 kW ~ 600 kW
(Not immediately after driving)
HINT:
If there is open circuit, ohmmeter indicates 720 kW or more.
If there is short circuit, ohmmeter indicates 200 W or less.
NG Replace EGR gas temp. sensor.
OK
2 Check for open and short in harness and connector between EGR gas temp.
sensor and ECM (See page IN±31).
NG Repair or replace harness or connector.
OK
3 Check connection and blockage of vacuum hose (See page EC±2).
NG Repair or replace vacuum hose.
OK

A02047
ON
EGR
ONOFF
VSV is ON VSV is OFF
G
E11
Air
FG Air
F EE
DI±300
± DIAGNOSTICSENGINE (1MZ±FE)
535 Author: Date:
4 Check VSV for EGR.
PREPARATION:
(a) Remove the glove compartment (See page SF±73).
(b) Disconnect the E11 connector of ECM.
(c) Turn the ignition switch ON.
CHECK:
Check VSV function.
(1) Connect between terminal EGR of the ECM and
body ground (VSV is ON).
(2) Disconnect between terminal EGR of the ECM and
body ground (VSV is OFF).
OK:
(1) VSV is ON:
Air from pipe E flows out through pipe F.
(2) VSV is OFF:
Air from pipe E flows out through pipe G.
OK Go to step 7.
NG
5 Check operation of VSV for EGR (See page SF±56).
NG Replace VSV for EGR.
OK
Check for open in harness and connector
between engine room J/B and ECM
(See page IN±31).
6 Check EGR system (See page EC±11).
NG Repair or replace.
OK

S05410
Vacuum
EGR Valve
± DIAGNOSTICSENGINE (1MZ±FE)
DI±301
536 Author: Date:
7 Check EGR valve.
PREPARATION:
(a) Disconnect the vacuum hose from EGR valve.
(b) Start the engine.
CHECK:
Check whether the engine stall when apply vacuum to EGR
valve.
OK:
Engine runs rough or stall.
NG Repair or replace EGR valve.
OK
8 Check vacuum control valve (See page EC±11).
NG Replace vacuum control valve.
OK
Check and replace ECM (See page IN±31).

DI±302
± DIAGNOSTICSENGINE (1MZ±FE)
537 Author: Date:
DTC P0402 Exhaust Gas Recirculation Flow
Excessive Detected (Ex CA Spec.)
CIRCUIT DESCRIPTION
Refer to DTC P0401 (Exhaust Gas Recirculation Flow Insufficient Detected) on page DI±292.
DTC No.DTC Detecting ConditionTrouble Area
P0402
When EGR cut±off, lift amount of EGR valve is
2.6 mm (0.1 in.) or more
(2 trip detection logic)

EGR valve stuck open

VSV for EGR open malfunction

Short in VSV circuit for EGR

Open or short in EGR valve position sensor circuit

EGR valve position sensor

ECM
See DTC P0401 (Exhaust Gas Recirculation Flow Insufficient Detected) on See page DI±292 for SYS-
TEM CHECK DRIVING PATTERN and WIRING DIAGRAM.
INSPECTION PROCEDURE
HINT:
Read freeze frame data using TOYOTA hand±held tester or OBD II scan tool. Because freeze frame records
the engine conditions when the malfunction is detected, when troubleshooting it is useful for determining
whether the vehicle was running or stopped, the engine warmed up or not, the air±fuel ratio lean or rich, etc.
at the time of the malfunction.
TOYOTA hand±held tester
1 Check connection and blockage of vacuum hose.
NG Repair or replace vacuum hose.
OK
2 Check VSV for EGR (See page DI±292, step 5).
OK Go to step 4.
NG
DI07X±06