1999 TOYOTA CAMRY Service Repair Manual

Page 1513 of 4592

TOYOTA CAMRY 1999  Service Repair Manual 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 wh

Page 1514 of 4592

TOYOTA CAMRY 1999  Service Repair Manual 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

Page 1515 of 4592

TOYOTA CAMRY 1999  Service Repair Manual ± DIAGNOSTICSENGINE (1MZ±FE)
DI±303
538 Author: Date:
3 Check operation of VSV for EGR (See page SF±56).
NG  Replace VSV for EGR.
OK
Check for short in harness between VSV for
EGR and ECM (See p

Page 1516 of 4592

TOYOTA CAMRY 1999  Service Repair Manual DI±304
± DIAGNOSTICSENGINE (1MZ±FE)
539 Author: Date:
2 Check VSV for EGR (See page DI±292, step 5).
OK  Go to step 4.
NG
3 Check operation of VSV for EGR (See page SF±56).
NG  Replace VSV for

Page 1517 of 4592

TOYOTA CAMRY 1999  Service Repair Manual FI7081
Waveform of Oxygen Sensor
before CatalystNormal Catalyst Waveform of Oxygen Sensor
after Catalyst
FI7132
Engine Speed
2,500 ~ 3,000 rpm
Idling
IG SW OFF(a)(b)(c) (d)
Time Warmed up 3 min. or so

Page 1518 of 4592

TOYOTA CAMRY 1999  Service Repair Manual FI6514
OX Signal Waveform (Oscilloscope)
1 V
0 V
200 m sec./Division
DI±306
± DIAGNOSTICSENGINE (1MZ±FE)
541 Author: Date:
(a) Connect  the TOYOTA hand±held tester to the DLC3, or connect the pr

Page 1519 of 4592

TOYOTA CAMRY 1999  Service Repair Manual ± DIAGNOSTICSENGINE (1MZ±FE)
DI±307
542 Author: Date:
3 Check heated oxygen sensor (bank 1, sensor 1) (See page DI±255).
NG  Repair or replace.
OK
4 Check heated oxygen sensors (bank 1, 2 sensor

Page 1520 of 4592

TOYOTA CAMRY 1999  Service Repair Manual A01674
Waveform of
A/F Sensor
Normal CatalystWaveform of Heated Oxygen
Sensor Behind Catalyst
Abnormal Catalyst DI±308
± DIAGNOSTICSENGINE (1MZ±FE)
543 Author: Date:
DTC P0420 Catalyst System Eff