1999 TOYOTA CAMRY stop start

F02201
DLC1
TsTc E
1
BR3904
0.13 sec. 0.13 sec.
ON
OFF
BR3893
Malfunction Code (Example Code 72, 76)
72 67
ON
OFF
0.5 sec. 0.5 sec. 0.5 sec. 0.5 sec.1.5 sec.
2.5 sec.4 sec.
Repeat DI±576
± DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
811 Author: Date:
2. SPEED SENSOR SIGNAL
(a) Check the speed sensor signal.
(1) Turn the ignition switch OFF.
(2) Using SST, connect terminals Ts and E
1 of DLC1.
SST 09843 ± 18020
(3) Start the engine.
(4) Check that the ABS warning light blinks.
HINT:
If the ABS warning light does not blink, inspect the ABS warning
light circuit (See page DI±612).
(5) Drive vehicle straight forward.
HINT:
Drive vehicle faster than 45 km/h (28 mph) for several seconds.
(6) Stop the vehicle.
(7) Using SST, connect terminals Tc and E
1 of DLC1.
SST 09843 ± 18020
(8) Read the number of blinks of the ABS warning light.
HINT:

See the list of DTC shown on the next page.

If 2 or more malfunctions are indicated at the same time,
the lowest numbered code will be displayed 1st.

If every sensor is normal, a normal code is output (A cycle
of 0.25 sec. ON and 0.25 sec. OFF is repeated).
(9) After doing the check, disconnect the SST from ter-
minals Ts and E
1, Tc and E1 of DLC1, and turn igni-
tion switch OFF.
SST 09843 ± 18020

BR3583
BR3582F00010
RotorSpeed Sensor
Magnet
To ECU
+V
±VHigh Speed
Low Speed
CoilNS
± DIAGNOSTICSABS & TRACTION CONTROL SYSTEM
DI±593
828 Author: Date:
DTC31, 32, 33, 34Speed Sensor Circuit
CIRCUIT DESCRIPTION
The speed sensor detects wheel speed and sends the ap-
propriate signals to the ECU. These signals are used to control
the ABS and TRAC system. The front and rear rotors each have
48 serrations.
When the rotors rotate, the magnetic field emitted by the perma-
nent magnet in the speed sensor generates an AC voltage.
Since the frequency of this AC voltage changes in direct propor-
tion to the speed of the rotor, the frequency is used by the ECU
to detect the speed of each wheel.

DTC No.DTC Detecting ConditionTrouble Area
31, 32, 33, 34
Detection of any of conditions from 1. through 3.:
1. ABS is in non±operation, wheel speed is 10 km/h or
more, one eighth of maximum wheel speed is greater
than the minimum wheel speed, one eighth of maximum
wheel speed is smaller than the rear maximum wheel
speed or momentary interruption of both the rear wheels
are shown in the 15 sec. or more continuously.
2. ABS is in non±operation, momentary interruption of
speed sensor occurs 7 times or more in the mean time
of switching the ignition switch ON and OFF or vehicle
speed is 20 km/h (12 mph) or more and the condition of
noise interference or non±noise interference occurs 75
times or more within 5 sec.
3. Vehicle is at a stop, malfunction signal of vehicle speed
sensor hardware open circuit is ON for 1.02 sec. contin-
uously since starting the checking of a certain vehicle.

Right front, left front, right rear, left rear speed sensor

Each speed sensor circuit

Speed sensor rotor

ECU
HINT:

DTC No. 31 is for the right front speed sensor.

DTC No. 32 is for the left front speed sensor.

DTC No. 33 is for the right rear speed sensor.

DTC No. 34 is for the left rear speed sensor.
Fail safe function:
If any trouble occurs in the speed sensor circuit, the ECU cuts off current to the ABS & TRAC solenoid relay
and prohibits ABS control and TRAC control.
DI1JP±03

N17520
(1)
(2)
(1)
No.Operation MethodCRUISE MAIN Indicator Light
Blinking PatternDiagnosis
1 Turn SET/COAST switch ON
2Turn RES/ACC switch ON
3Turn CANCEL switch ON
Turn stop light switch ON
Depress brake pedal
Turn PNP switch OFF
(Shift to except D position)
4Drive at about 40 km/h
(25 mph)or higher
Drive at about 40 km/h
(25 mph) or below
LightON
OFF
LightON
OFF
LightON
OFFSwitch ON
Switch OFF
LightON
OFFSwitch OFF
Switch ONSET/COAST switch circuit
is normal
RES/ACC switch circuit
is normal
CANCEL switch circuit
is normal
Stop light switch circuit
is normal
PNP switch circuit is
normal
Vehicle Speed Sensor is
normal
LightON
OFF LightON
OFF
1sec.
0.25 sec.0.25 sec.
Turn clutch switch OFF
(Depress clutch pedal)Clutch switch circuit
is normal
DI±874
± DIAGNOSTICSCRUISE CONTROL SYSTEM
1109 Author: Date:
5. INPUT SIGNAL CHECK
HINT:
(1) For check No.1 ~ No.3

Turn ignition switch ON.
(2) For check No.4

Jack up the vehicle.

Start the engine.

Shift to D position.
(a) Pull the control switch to SET/COAST or RES/ACC posi-
tion and hold it down or up (1).
(b) Push the main switch ON (2).
(c) Check that the CRUISE MAIN indicator light blinks twice
or 3 times repeatedly after 3 seconds.
(d) Turn the SET/COAST or RES/ACC switch OFF.
(e) Operate each switch as listed in the table below.
(f) Read the blinking pattern of the CRUISE MAIN indicator
light.
(g) After performing the check, turn the main switch OFF.
HINT:
When 2 or more signals are input to the ECU, the lowest num-
bered code will be displayed first.

DI±878
± DIAGNOSTICSCRUISE CONTROL SYSTEM
111 3 Author: Date:
Symbols (Terminals No.)Wiring ColorConditionSTD Voltage (V)
CMS e GND WLWB
Ignition switch ON
Main switch OFF10 ± 16 VCMS e GND
(C15±11 e C15±16)W±L e W±BIgnition switch ON
Main switch ONBelow 0.5 V
SPD e GND
(C15 12C15 16)V±W e W±B
Engine start
Car stoppage.Below 1.5 V or
4.7 ± 16 V
(C15±12 e C15±16)VW e WB
During driving (Pulse generated).3 ± 7 V
IDL e GND LRWB
Ignition switch ON
Throttle valve fully opened.10 ± 16 VIDL e GND
(C15±13 e C15±16)L±R e W±BIgnition switch ON
Throttle valve fully closed.Below 1.5 V
OD e GNDYBWB
During cruise control driving
OD switch ON.10 ± 16 VOD e GND
(C15±14 e C15±16)Y±B e W±BDuring cruise control driving
OD switch OFF (3rd driving)Below 1 V
MO e GND RGWB
During cruise control driving
ACC switch hold ON9 ± 15 VMO e GND
(C15±15 e C15±16)R±G e W±BDuring cruise control driving
COAST switch hold ONBelow 1 V
GND e Body Ground
(C15±16 e Body Ground)W±B e Body
GroundConstantBelow 1 V

DI±8
± DIAGNOSTICSENGINE
5. CHECK FOR INTERMITTENT PROBLEMS
TOYOTA hand±held tester only:
By putting the vehicle's ECM in the check mode, 1 trip detection logic is possible instead of 2 trip detection
logic and sensitivity to detect open circuits is increased. This makes it easier to detect intermittent problems.
(1) Clear the DTC (See step 2).
(2) Set the check mode (See step 3).
(3) Perform a simulation test (See page IN±19).
(4) Check the connector and terminal (See page IN±29).
(5) Handle the connector (See page IN±29).
6. BASIC INSPECTION
When the malfunction code is not confirmed in the DTC check, troubleshooting should be performed in order
for all possible circuits to be considered as the causes of the problems. In many cases, by carrying out the
basic engine check shown in the following flow chart, the location causing the problem can be found quickly
and efficiently. Therefore, use of this check is essential in engine troubleshooting.
1 Is battery positive voltage 11 V or more when engine is stopped?
NO Charge or replace battery.
YES
2 Is engine cranked?
NO Proceed to Pub. No. RM654U, page ST±2 and
continue to troubleshoot.
YES
3 Does engine start?
NO Go to step 7.
YES

DI±12
± DIAGNOSTICSENGINE
SHORT FT #1
Short±term Fuel Trim Bank 10 ± 20 %
LONG FT #1Long±term Fuel Trim Bank 10 ± 20 %
ENGINE SPDEngine SpeedIdling: 650 ± 750 rpm
VEHICLE SPDVehicle SpeedVehicle Stopped: 0 km/h (0 mph)
IGN ADVANCEIgnition Advance: Ignition Timing of Cylinder No.1Idling: BTDC 0 ± 10°
INTAKE AIRIntake Air Temp. Sensor ValueEquivalent to Ambient Temp.
MAPAbsolute Pressure inside Intake ManifoldIdling: 20 ± 51 kPa
Racing without load (2,500 rpm): 17 ± 48 kPa
THROTTLE POSVoltage Output of Throttle Position Sensor Calcu-
lated as a percentage: 0 V "0 %, 5 V "100 %Throttle Fully Closed: 6 ± 16 %
Throttle Fully Open: 64 ± 98 %
O2S B1 S1Voltage Output of Heated Oxygen Sensor Bank 1
Sensor 1Idling: 0.1 ± 0.9 V (0.56 ± 0.76 V*2)
O2FT B1 S1Heated Oxygen Sensor Fuel Trim Bank 1 Sensor
1 (Same as SHORT FT #1)0 ± 20 %
A/FS B1 S1Voltage Output of A/F SensorIdling: 2.8 ± 3.8 V
A/FFT B1 S1A/F Sensor Fuel Trim (Same as SHORT FT #1)0 ± 20 %
O2S B1 S2Voltage Output of Heated Oxygen Sensor Bank 1
Sensor 2Driving at 50 km/h (31 mph): 0.05 ± 0.95 V
*1: If no conditions are specifically stated for ºldlingº, it means the shift lever is at N or P position, the A/C
switch is OFF and all accessory switches are OFF.
*
2: When you use the OBD II scan tool (excluding TOYOTA hand±held tester).
(b) TOYOTA Enhanced Signals.
TOYOTA hand±held tester displayMeasurement ItemNormal Condition*
MISFIRE RPMEngine RPM for first misfire rangeMisfire 0: 0 rpm
MISFIRE LOADEngine load for first misfire rangeMisfire 0: 0 g/r
INJECTORFuel injection time for cylinder No.1Idling: 2.9 ± 5.1 ms
IAC DUTY RATIOIntake Air Control Valve Duty Ratio
Opening ratio rotary solenoid type IAC valveIdling: 25 ± 62 %
STARTER SIGStarter SignalCranking: ON
CTP SIGClosed Throttle Position SignalThrottle fully closed: ON
A/C SIGA/C Switch SignalA/C ON: ON
PNP SIGPark/Neutral Position Switch SignalP or N position: ON
ELECTCL LOAD SIGElectrical Load SignalDefogger S/W ON: ON
STOP LIGHT SWStop Light Switch SignalStop light switch ON: ON
PS OIL PRESS SWPower Steering Oil Pressure Switch SignalTurn steering wheel: ON
FC IDLFuel Cut Idle: Fuel cut when throttle valve fully
closed, during decelerationFuel cut operating: ON
FC TAUFuel Cut TAU: Fuel cut during very light loadFuel cut operating: ON
CYL#1, CYL#2, CYL#3, CYL#4Abnormal revolution variation for each cylinder0 %
IGNITIONTotal number of ignition for every 1,000 revolu-
tions0 ± 2,000
EGR SYSTEMEGR system operating conditionIdling: OFF
FUEL PUMPFuel Pump SignalIdling: ON
A/C CUT SIGA/C Cut SignalA/C S/W OFF: ON
A/C MAG CLUTCHA/C Switch SignalA/C ON: ON
EVAP (PURGE) VSVEVAP VSV SignalVSV operating: Avove 30 %

DI±34
± DIAGNOSTICSENGINE
DTC P0116 Engine Coolant Temp. Circuit Range/Perfor-
mance Problem
CIRCUIT DESCRIPTION
Refer to DTC P0115 on page DI±30.
DTC No.DTC Detecting ConditionTrouble Area
If THW < ±7°C (19.4°F) or THA < ±7°C (19.4°F) 20 min. or
more after starting engine, engine coolant temp. sensor value
is ±10°C (±50°F)* or less (2 trip detection logic)
P0116
When THW 35°C (95°F) and 60°C (140°F), THA

±6.7°C (19.9°F) when starting the engine, conditions (a) and
(b) continue: (2 trip detection logic)
(a) Vehicle speed is changing (Not stable)
(b) Water temperature change is lower than 3°C (37.4°F) from
water temperature since when starting the engine
Cooling system

Engine coolant temp. sensor
INSPECTION PROCEDURE
HINT:

If DTCs P0105, P0106, P0110, P0115, P0120, P0180 and P0190 are output simultaneously, engine
coolant temperature sensor circuit may be open. Perform troubleshooting of DTC P0115 first.

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 was warmed up or not, the air±fuel
ratio was lean or rich, etc. at the time of the malfunction.
1 Are there any other codes (besides DTC P0116) being output?
YES Go to relevant DTC chart.
NO
2 Check thermostat (See Pub. No. RM654U, page CO±10).
NG Replace thermostat.
OK
Replace engine coolant temperature sensor.
DI00Q±07

A09397
ECM
J18
J/C
7 From
Battery
B
213
EFI Relay VSV
for EGR
21P-B23
E6EGR
E01
2K2
2J EFI
Engine Room J/B No.2 1B 9
B-Y
B
2AB-Y
IG3
EB
W-B
2F4B-Y
5
B-YFrom
Ignition SW
P20769
Vehicle Speed
60 ± 80 km/h
(38 ± 50 mph)
Idling
IG SW OFF
(1)(2)
Warm up
3 ± 5 min.2 min.
3 ± 5 min.Time (3)
(4)
(5)(6)
(7)
2 min. DI±64
± DIAGNOSTICSENGINE
WIRING DIAGRAM
SYSTEM CHECK DRIVING PATTERN
(1) Connect the OBD II scan tool or TOYOTA hand±held tester to the DLC3.
(2) Start and warm up the engine with all the accessories switched OFF.
(3) Run the vehicle at 60 ± 80 km/h (38 ± 50 mph) for 3 min. or more.
(4) Idle the engine for about 2 min.
(5) Do steps (3) and (4) again.
(6) Stop at safe place and turn the ignition switch OFF.
(7) Do steps (2) to (5) again.
(8) Check the READINESS TESTS mode on the OBD II scan tool or TOYOTA hand±held tester.
If COMPL is displayed and the MIL does not light up, the system is normal.
If INCMPL is displayed and the MIL does not light up, run the vehicle again and check it.
HINT:
INCMPL is displayed when either condition (a) or (b) exists.
(a) The system check is incomplete.