1999 TOYOTA CAMRY Engine idle speed

S04593
SF07T±03
S04536
Vacuum
VTAOhmmeter
E2
VC
S04604
Plug
Disconnect
± SFI (1MZ±FE)THROTTLE BODY
SF±37
1536 Author: Date:
THROTTLE BODY
ON±VEHICLE INSPECTION
1. INSPECT THROTTLE BODY
Check that the throttle linkage moves smoothly.
2. INSPECT THROTTLE POSITION SENSOR
(a) Disconnect the sensor connector.
(b) Disconnect the vacuum hose from the throttle body.
(c) Apply vacuum to the throttle opener.
(d) Using an ohmmeter, measure the resistance between
each terminal.
Resistance:
Throttle valve
conditionBetween
terminalsResistance
Fully closedVTA ± E20.2 ± 6.3 kW
Fully openVTA ± E22.0 ± 10.2 kW
±VC ± E22.5 ± 5.9 kW
(e) Reconnect the vacuum hose to the throttle body.
(f) Reconnect the sensor connector.
3. INSPECT THROTTLE OPENER
(a) Allow the engine to warm up to normal operating tempera-
ture.
(b) Check idle speed.
Idle speed: 700 ± 50 rpm
(c) Disconnect the vacuum hose from the throttle opener,
and plug the hose end.
(d) Check the throttle opener setting speed.
Throttle opener setting speed: 900 ± 1,950 rpm
If the throttle opener setting is not as specified, replace the
throttle body.
(e) Stop the engine.
(f) Reconnect the vacuum hose to the throttle opener.
(g) Start the engine and check that the idle speed returns to
the correct speed.

SF07Y±03
S04529
E1DLC1
SST
TE1
DLC1
S04533
RSC
+B
RSO
Ohmmeter SF±42
± SFI (1MZ±FE)IDLE AIR CONTROL (IAC) VALVE
1541 Author: Date:
IDLE AIR CONTROL (IAC) VALVE
ON±VEHICLE INSPECTION
1. INSPECT IAC VALVE OPERATION
(a) Initial conditions:

Engine at normal operating temperature

Idle speed checked correctly

Transmission in neutral position

A/C switch OFF
(b) Using SST, connect terminals TE1 and E1 of the
DLC1.
SST 09843±18020
(c) After engine speed is kept at approx. 1,000 rpm for 5 se-
conds, check that it returns to idle speed.
If the engine speed operation is not as specified, check the IAC
valve, wiring and ECM.
(d) Remove the SST from the DLC1.
SST 09843±18020
2. INSPECT IAC VALVE RESISTANCE
NOTICE:
ºColdº and ºHotº in the following sentences express the
temperature of the coils themselves. ºColdº is from ±10°C
(14°F) to 50°C (122°F) and ºHotº is from 50°C (122°F) to
100°C (212°F).
(a) Disconnect the IAC valve connector.
(b) Using an ohmmeter, measure the resistance between ter-
minal +B and other terminals (RSC, RSO).
Resistance:
Cold17.0 ± 25.0 W
Hot21.5 ± 29.5 W
If resistance is not as specified, replace the IAC valve.
(c) Reconnect the IAC valve connector.
3. INSPECT AIR ASSIST SYSTEM
(a) Initial conditions:

Engine at normal operating temperature

Idle speed checked correctly

Transmission in neutral position

A/C switch OFF

S04529
E1DLC1
SST
TE1
DLC1
S04531
DisconnectPlug
Plug
± SFI (1MZ±FE)IDLE AIR CONTROL (IAC) VALVE
SF±43
1542 Author: Date:
(b) Using SST, connect terminals TE1 and E1 of the DLC1.
SST 09843±18020
(c) After engine speed is kept at 900 ± 1,300 rpm for 10 se-
conds, check that it returns to idle speed.
(d) Stop the engine.
(e) Disconnect the air assist hose from the air pipe, and block
off the IAC valve exit and the entry to the pipe.
(f) Start the engine and check that the idle speed reaches
500 rpm or below (the engine may stall).
If the idle does not reach 500 rpm or below, check for a leak be-
tween the air assist hoses, pipe and injectors.
(g) Remove the SST from the DLC1.
SST 09843±18020
(h) Reconnect the air assist hose to the air pipe.

TOYOTA ªDINGHYº TOWING GUIDE ± AX001±00 March 17, 2000
Page 2 of 2
All Models
YEARMODELDINGHY TOWABLESPEED/DISTANCEYEARMODELM/TA/T
SPEED/DISTANCELIMITS
1995 ± 2000AvalonNot Towable±
1992 ± 2000CamryYesNoNone
1999 ± 2000SolaraYesNoNone
1994 ± 1999CelicaYesNoNone
2000Celica GTYesNoNone
2000Celica GT±SYes±None2000Celica GT±S±Yes55 MPH / 200 Miles
1993 ± 2000CorollaYesNoNone
2000ECHOYesNoNone
1992 ± 2000Land CruiserNot Towable±
2000MR2 SpyderYesN/ANone
1996 ± 1998PaseoYesNoNone
1992 ± 1997Previa 2WDNot Towable±
1992 ± 1997Previa 4WDNot Towable±
1998 ± 2000SiennaNot Towable±
1994 ± 1999SupraNot Towable±
1996 ± 2000RAV4 2WDYesNoNone
1996 ± 2000RAV4 4WDYesNoNone
1995 ± 1998TercelYesNoNone
1996 ± 20004Runner 2WDNot Towable±
1996 ± 20004Runner 4WDNot Towable±
1995 ± 2000Tacoma 2WDNot Towable±
1995 ± 2000Tacoma 4WDNot Towable±
1993 ± 1999T100 2WDNot Towable±
1993 ± 1999T100 4WDNot Towable±
2000Tundra 2WDNot Towable±
2000Tundra 4WDNot Towable±
NOTE:
After ªDinghyº Towing, or at the recommended distance limits, let the Engine idle for
more than 3 minutes before operating the vehicle or resuming towing.
NOTE:
Vehicles that are Dinghy towable will not sustain internal damage to the transmission
or transfer components, as long as speed/distance limits are observed. The
transmission must
be placed in the ªneutralº position when Dinghy towing. Dinghy
towing these vehicles does not eliminate the possibility of damage to other vehicle
systems (Body, Chassis, Electrical Systems, etc.). Affected
Vehicles

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)
(over 900
rpm)
Idling
IG SW off
Over
2 min
(a)Over
50 sec Over
50 sec
(b)50 sec 50 sec Over
40
sec
(c)Over
40
sec40
sec
(d)
Preconditions
The monitor will not run unless:

MIL is OFF.
Drive Pattern Procedure
Connect the OBDII Scantool to DLC3 to check monitor status and preconditions.
a. Start the engine and allow it to idle for 2 minutes or more.
b. Drive the vehicle at 25 mph (40 km/h) or more for at least 50 seconds.
Be sure engine speed remains above 900 rpm.
c. Stop the vehicle and allow the engine to idle for 40 seconds or more.
d. Perform steps ªbº and ªcº ten times.
If readiness status does not switch to ªcomplete,º ensure preconditions are met, turn the
ignition OFF, then repeat steps ªaº through ªd.º
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:
Oxygen
Monitors

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 ± 112 km/h)
(900 ± 3,200 rpm)
Idling
IG SW offOnce Twice 10 times
Over
2 min
(a)Over
40 sec
(d) 25 mph
(40 km/h)
(over 900 rpm)
Over
3 min
(b)
Over
10 sec
(c)Over
10 sec
(e)Over
40 sec
Over
10 sec40 sec
(f)
Preconditions
The monitor will not run unless:

MIL is OFF.
Drive Pattern Procedure
Connect the OBDII Scantool to DLC3 to check monitor status and preconditions.
a. Start the engine and allow it to idle for 2 minutes or more.
b. Drive the vehicle at 40 ± 70 mph (64 ± 112 km/h) or more for at least 3 minutes.
Be sure to maintain engine speed between 900 and 3,200 rpm.
c. Stop the vehicle and allow the engine to idle for 10 seconds or more.
d. Drive the vehicle at 25 mph (40 km/h) for at least 40 seconds or more.
Be sure to maintain engine speed above 900 rpm.
e. Stop the vehicle and allow the engine to idle for 10 seconds or more.
f. Perform steps ªdº and ªeº ten times.
If readiness status does not switch to ªcomplete,º ensure preconditions are met, turn the
ignition switch OFF, then repeat steps ªaº through ªf.º
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:
Oxygen
Monitors
(Continued)

O2S TEST RESULTS (MODE 05) ± SS002-03December 17, 2003
Page 2 of 43
1. Clear any stored Diagnostic Trouble Codes (DTCs) using the Toyota
Diagnostic Tester.
2. Start the engine.
3. Perform the drive pattern below to run and complete the Oxygen Sensor (O2S) Monitor.
O2S Monitor Drive Pattern
ECT: 167
F (75
C) or more
Vehicle Speed
At Least 8 Times
48 km/h (30 mph)
IdlingAt Least Twice Accelerator Pedal
DepressingAccelerator Pedal
Releasing (Fuel±Cut)
6 mph
(10 km/h)
Time2 min.
or more40 sec
or more20 sec
or more10 sec
or more10 sec
or more
HINT:
The O2S Monitor is completed when the following conditions are met:
Two (2) minutes or more passed after the engine start.
The Engine Coolant Temperature (ECT) is 167
F (75
C) or more.
Cumulative running time at 30 mph (48 km/h) or more exceeds 6 minutes.
Vehicle is in closed loop.
The fuel±cut is operated for 8 seconds or more (for Rear O2S Monitor).
A. Allow the engine to idle for two minutes.
B. Warm up the engine until the Engine Coolant Temperature (ECT) reaches 167
F
(75
C).
C. Drive the vehicle over 30 mph (48 km/h) for more than 40 seconds.
D. Stop the vehicle and allow the engine to idle for more than 20 seconds.
E. Repeat steps C and D at least 8 times in one driving cycle.
(Do not cycle the ignition key.)
In addition, perform the following steps for the Rear O2S Readiness Monitor:
A. Select second gear.
B. Allow the vehicle to run at 30 mph (48 km/h) or more.
C. Keep the accelerator pedal ªoff±idleº for more than 10 seconds.
D. Immediately after step C, release the accelerator pedal for at least 10 seconds
without depressing the brake pedal (to execute the fuel±cut).
E. Decelerate the vehicle until the vehicle speed reaches less than 6 mph (10 km/h).
F. Repeat steps B ± E at least twice in one driving cycle.
Completing
O2S
Readiness
Monitor

G
Position of Parts in Engine Compartment
I 1 Idle Air Control Valve
I 2 Ignition Coil and Igniter No.1
I 3 Ignition Coil and Igniter No.2
I 4 Injector No.1
I 5 Injector No.2
I 6 Injector No.3
I 7 Injector No.4
I 8 Intake Air Temp. Sensor
M 1 Manifold Absolute Pressure Sensor
N 1 Noise Filter (Ignition)
O 1 Oil Pressure SW
P 1 Park/Neutral Position SW,A/T Indicator Light SW and
Back±Up Light SW
P 2 Power Steering Oil Pressure SWR 1 Radiator Fan Motor
S 1 Starter
S 2 Starter
T 1 Throttle Position Sensor
V 1 Vehicle Speed Sensor (Combination Meter)
V 2 VSV (EGR)
W 1 Washer Level Warning SW
W 2 Washer Motor
W 3 Water Temp. Sender
W 4 Water Temp. SW No.1