1999 TOYOTA CAMRY Service Repair Manual

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Page 3785 of 4592

TOYOTA CAMRY 1999 Service Repair Manual READINESS MONITOR DRIVE PATTERNS ± EG003-02 RevisedMarch 29, 2002
Page 15 of 23
Drive Pattern Preconditions
The monitor will not run unless:
MIL is OFF.
Fuel level is between 1/2 to 3/4 full (for f

Page 3786 of 4592

TOYOTA CAMRY 1999 Service Repair Manual READINESS MONITOR DRIVE PATTERNS ± EG003-02 RevisedMarch 29, 2002
Page 16 of 23
DRIVE PATTERN NO. 6: EVAP Monitor (Vacuum Pressure Monitor/Intrusive Type)
Idling
IG SW off
Warm up
(2a) Soak
(1a)15 ±

Page 3787 of 4592

TOYOTA CAMRY 1999 Service Repair Manual READINESS MONITOR DRIVE PATTERNS ± EG003-02 RevisedMarch 29, 2002
Page 17 of 23
Drive Pattern Preconditions
The monitor will not run unless:
MIL is OFF.
Fuel level is between 1/2 to 3/4 full (for f

READINESS MONITOR DRIVE PATTERNS ± EG003-02 RevisedMarch 29, 2002
Page 17 of 23
Drive Pattern Preconditions
The monitor will not run unless:
MIL is OFF.
Fuel level is between 1/2 to 3/4 full (for faster completion)
.
Altitude is 7800 feet (2400 m) or less.*
ECT (Coolant Temp) is between 40F and 95F (4.4C ± 35C).
IAT (Intake Air) is between 40F and 95F (4.4C ± 35C).*
Cold Soak Procedure has been completed.
* For 2002 MY and later vehicles: The readiness test can be completed in cold ambient conditions
(less than 40F / 4.4C) and/or at high altitudes (more than 7800 feet / 2400 m) if the complete drive
pattern (including Cold Soak) is repeated a second time after cycling the ignition OFF.
NOTE:
Before starting the engine, the difference between ECT (Coolant Temp) and IAT (Intake
Air) must be less than 13F (7C). (Refer to Examples 1 and 2 on previous page.)
Drive Pattern Procedure
Connect the OBDII Scantool to DLC3 to check monitor status and preconditions.
Release the pressure in the fuel tank by removing and then reinstalling the fuel tank
cap.
2a. Start the engine and allow it to idle until ECT (Coolant Temp) is 167F (75C) or
greater. (See illustration on previous page.)
2b. Race the engine at 3,000 rpm for approximately 10 seconds. (See illustration on
previous page.)
2c. Allow the engine to idle with the A/C ON (to create a slight load) for 15 ± 50
minutes. (See illustration on previous page.)
NOTE:
If the vehicle is not equipped with A/C put a slight load on the engine by doing the
following:
Securely set the parking brake.
Block the drive wheels with wheel chocks.
Allow the vehicle to idle in drive for 15 ± 50 minutes.
NOTE:
The readiness status may not switch to ªcompleteº after the first drive pattern trip if a
Pending Code has been set (first trip for a two±trip DTC).
Pending Codes are available from the DTC Info Menu in Enhanced OBDII.
Pending Codes indicate a POTENTIAL problem was detected. A second trip is
needed to confirm the DTC prior to diagnosis.
Once a second trip is completed, a current DTC will be stored. Readiness
Monitor
Drive
Patterns:
EVAP
Monitors
(Continued)

Page 3788 of 4592

TOYOTA CAMRY 1999 Service Repair Manual READINESS MONITOR DRIVE PATTERNS ± EG003-02 RevisedMarch 29, 2002
Page 18 of 23
DRIVE PATTERN NO. 7: EVAP Monitor (Without Leak Detection)
43 ± 56 mph
(70 ± 90 km/h)
Idling
IG SW off
3 ± 5 min 3 �

Page 3789 of 4592

TOYOTA CAMRY 1999 Service Repair Manual READINESS MONITOR DRIVE PATTERNS ± EG003-02 RevisedMarch 29, 2002
Page 19 of 23
DRIVE PATTERN NO. 8: EVAP Monitor (For Prius)
Idling
IG SW off
Soak
(1a)15 min
(When the Readiness Monitor or
DTC is se

Page 3790 of 4592

TOYOTA CAMRY 1999 Service Repair Manual READINESS MONITOR DRIVE PATTERNS ± EG003-02 RevisedMarch 29, 2002
Page 20 of 23
Drive Pattern Preconditions
The monitor will not run unless:
MIL is OFF.
Altitude is 7800 feet (2400 m) or less.
ECT

Page 3791 of 4592

TOYOTA CAMRY 1999 Service Repair Manual READINESS MONITOR DRIVE PATTERNS ± EG003-02 RevisedMarch 29, 2002
Page 21 of 23
DRIVE PATTERN NO. 9: Oxygen Sensor Monitor (Front and Rear O2S System)
Once
Twice 3 times 10 times
25 mph
(40 km/h)
(ov

Page 3792 of 4592

TOYOTA CAMRY 1999 Service Repair Manual READINESS MONITOR DRIVE PATTERNS ± EG003-02 RevisedMarch 29, 2002
Page 22 of 23
DRIVE PATTERN NO. 10: Oxygen/Air Fuel Ratio Sensor Monitor
(Front AF Sensor and Rear O2S System)
40 ± 70 mph
(64 ± 1

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