stop start TOYOTA CAMRY 1999 Service User Guide

S05959
CO06N±03
S05953
ECT Switch
Connector
Z19282
No.1
No.2Battery
Ammeter (±)
(+) (+)
(±)
Battery Ammeter CO±24
± COOLING (5S±FE)ELECTRIC COOLING FAN
1598 Author: Date:
ELECTRIC COOLING FAN
ON±VEHICLE INSPECTION
1. CHECK COOLING FAN OPERATION WITH LOW TEM-
PERATURE (Below 83°C (181°F))
(a) Turn the ignition switch ON.
(b) Check that the cooling fan stops.
If not, check the cooling fan relay and ECT switch, and check
for a separated connector or severed wire between the cooling
fan relay and ECT switch.
(c) Disconnect the ECT switch connector.
(d) Check that the cooling fan rotates.
If not, check the fan main relay, cooling fan relay, cooling fan,
fuses, and check for short circuit between the cooling fan relay
and ECT switch.
(e) Reconnect the ECT switch connector.
2. CHECK COOLING FAN OPERATION WITH HIGH TEM-
PERATURE (Above 93°C (199°F))
(a) Start the engine, and raise coolant temperature to above
93°C (199°F).
(b) Check that the cooling fan rotates.
If not, replace the ECT switch.
3. INSPECT COOLING FANS
(a) Disconnect the cooling fan connector.
(b) Connect battery and ammeter to the connector.
(c) Check that the cooling fan rotates smoothly, and check
the reading on the ammeter.
Standard amperage: 4.9 ± 8.5 A
(d) Reconnect the cooling fan connector.

B05939
CO03S±03
S04727
Disconnect
B05940
B05941
Ammeter
Battery
± COOLING (1MZ±FE)ELECTRIC COOLING FAN
CO±25
1633 Author: Date:
ELECTRIC COOLING FAN
ON±VEHICLE INSPECTION
1. CHECK COOLING FAN OPERATION WITH LOW
TEMPERATURE (Below 88°C (190°F))
(a) Turn the ignition switch ON.
(b) Check that the cooling fan stops.
If not, check the cooling fan relay and ECT switch, and check
for a separated connector or severed wire between the cooling
fan relay and ECT switch.
(c) Disconnect the No.1 ECT switch connector.
(d) Check that the cooling fan rotates.
If not, check the fuses, engine main relay, cooling fan relay,
cooling fan, and check for a short circuit between the cooling
fan relay and ECT switch.
(e) Reconnect the No.1 ECT switch connector.
2. CHECK COOLING FAN OPERATION WITH HIGH
TEMPERATURE (Above 98°C (208°F))
(a) Start the engine, and raise coolant temperature to above
98°C (208°F).
(b) Check that the cooling fan rotates.
If not, replace the No.1 ECT switch.
3. INSPECT NO.1 COOLING FAN
(a) Disconnect the cooling fan connector.
(b) Connect battery and ammeter to the cooling fan connec-
tor.
(c) Check that the cooling fan rotates smoothly, and check
the reading on the ammeter.
Standard amperage: 8.3 ± 11.3 A at 20°C (68°F)
(d) Reconnect the cooling fan connector.

± DIAGNOSTICSENGINE (5S±FE)
DI±15
250 Author: Date:
(b) TOYOTA Enhanced Signals.
TOYOTA hand±held tester displayMeasurement ItemNormal Condition*1
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 rpm
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 %
VAPOR PRESS VSVVapor Pressure VSV SignalVSV operating: ON
TOTAL FT B1Total Fuel Trim Bank 1: Average value for fuel
trim system of bank 1Idling: 0.8 ~ 1.2 V
O2 LR B1, S1 *2
Heated Oxygen Sensor Lean Rich Bank 1 Sen-
sor 1: Response time for oxygen sensor output to
switch from lean to rich
Idling after warming up: 0 ~ 1,000 msec.
O2 RL B1, S1 *2
Heated Oxygen Sensor Rich Lean Bank 1 Sen-
sor 1: Response time for oxygen sensor output to
switch from rich to lean
Idling after warming up: 0 ~ 1,000 msec.
*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: Except California Specification vehicles.

± DIAGNOSTICSENGINE (5S±FE)
DI±47
282 Author: Date:
DTC P0116 Engine Coolant Temp. Circuit Range/
Performance Problem
CIRCUIT DESCRIPTION
Refer to DTC P0115 (Engine Coolant Temp. Circuit Malfunction) on page DI±41.
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 30°C (86°F)*1 20°C (48°F)*2 or less
(2 trip detection logic)
If THW ±7°C (19.4°F) and THA
±7°C (19.4°F) and 10°C
(50°F) at engine start, 5 min. or more after starting engine,
engine coolant temp. sensor value is 30°C (86°F)*1 20°C
(48°F)*2 or less
(2 trip detection logic)
P0116 If THW
10°C (50°F) and THA
10°C (50°F) at engine
start, 2 min. or more after starting engine, engine coolant temp.
sensor value is 30°C (86°F)*1 20°C (48°F)*2 or less
(2 trip detection logic)
Engine coolant temp. sensor

Cooling system
When THW 35°C (95°F) and 60°C (140°F), THA

±6.7°C (19.9°F) when starting the engine, condition (a) and
(b) continues:
(a) Vehicle speed is changing (Not stable)
(b) Water temperature change is lower than 3°C (37.4°F) from
the water temperature since when sterting the engine
(2 trip detection logic)
*1: Except California Specification vehicles.
*2: Only for California Specification vehicles.
INSPECTION PROCEDURE
HINT:

If DTCs P0115 (Engine Coolant Temp. Circuit Malfunction) and P0116 (Engine Coolant Temp. Circuit
Range/Performance Problem) are output simultaneously, engine coolant temp. 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 warmed up or not, the air±fuel
ratio 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
DI00Q±05

A01666
Vehicle speed
50 ~ 65 km/h
(31 ~ 40 mph)
Idling
IG SW OFF
(1)
1 ~ 3 min.1 min.Time
(2)(3)(4)
(5)
± DIAGNOSTICSENGINE (5S±FE)
DI±67
302 Author: Date:
CONFIRMATION DRIVING PATTERN
(1) Connect the TOYOTA hand±held tester to the DLC3.
(2) Switch the TOYOTA hand±held tester from normal mode to check mode (See page DI±3).
(3) Start the engine and warm it up with all accessory switches OFF.
(4) Drive the vehicle at 50 ~ 65 km/h (31 ~ 40 mph) for 1 ~ 3 min. to warm up the heated oxygen sensor.
(5) Let the engine idle for 1 min.
(6) Perform steps (3) to (5) three times.
HINT:
If a malfunction exists, the MIL will light up during step (6).
NOTICE:
If the conditions in this test are not strictly followed, detection of the malfunction will not be possible.
If you do not have a TOYOTA hand±held tester, turn the ignition switch OFF after performing steps
(3) to (6), then perform steps (3) to (6) again.
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.
1 Are there any other codes (besides DTC P0130) being output?
YES Go to relevant DTC chart.
NO

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.
± DIAGNOSTICSENGINE (5S±FE)
DI±107
342 Author: Date:
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 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.
(b) There is a malfunction in the system.
If there is a malfunction in the system, the MIL will light up after steps (2) to (5) above are done.
(2 trip detection logic)
INSPECTION PROCEDURE
HINT:

If DTC P0105 (Manifold Absolute Pressure/Barometric Pressure Circuit Malfunction), P0106 (Manifold
Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem) and P0401 (Exhaust
Gas Recirculation Flow Insufficient Detected) are output simultaneously, perform troubleshooting of
DTC P0105 first.

If DTC P0401 (Exhaust Gas Recirculation Flow Insufficient Detected) and P0402 (Exhaust Gas Recir-
culation Flow Excessive Detected) are output simultaneously, perform troubleshooting of DTC P0402
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 warmed up or not, the air±fuel
ratio lean or rich, etc. at the time of the malfunction.

A00479
Engine Speed
3,000 rpm
Idling
IG SW OFF
Warmed up
3 min. or so
CheckTime (a)(c) (d)
(b) 2,000 rpm
2 sec. 2 sec.
DI±120
± DIAGNOSTICSENGINE (5S±FE)
355 Author: Date:
CONFIRMATION ENGINE RACING PATTERN
(a) Connect the OBD II scan tool or TOYOTA hand±held tester to the DLC3.
(b) Start the engine and warm it up with all accessories switched OFF until water temp. is stable.
(c) Race the engine at 2,500 ~ 3,000 rpm for about 3 min.
(d) When racing the engine at 3,000 rpm for 2 sec. and 2,000 rpm for 2 sec. alternately, check the wave-
form of the heated oxygen sensor (bank 1 sensor 2).
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.
1 Are there any other codes (besides DTC P0420) being output?
YES Go to relevant DTC chart.
NO
2 Check gas leakage on exhaust system.
NG Repair or replace.
OK

A03018A03422
ON EngineStart
Stop
VSV for Vapor
Pressure
Sensor
OFFOFF
ON
VSV for
EVAP
5 sec. 5 sec.
PTNK
(+)E2
(±) w/o Immobiliser
w/ Immobiliser
PTNK (+) E2(±)
DI±136
± DIAGNOSTICSENGINE (5S±FE)
371 Author: Date:
14 Check vacuum hoses between charcoal canister and VSV for vapor pressure
sensor, and vapor pressure sensor and VSV for vapor pressure sensor.
CHECK:
(a) Check that the vacuum hose is connected correctly.
(b) Check the vacuum hose for looseness and disconnection.
(c) Check the vacuum hose for cracks, hole, damage and blockage.
NG Repair or replace.
OK
15 Check the charcoal canister.
PREPARATION:
(a) Remove the glove compartment (See page SF±64).
(b) Connect the TOYOTA hand±held tester to the DLC3.
(c) Remove the fuel tank cap.
(d) Disconnect the VSV connector for the vapor pressure
sensor.
(e) Select the ACTIVE TEST mode on the TOYOTA hand±
held tester.
(f) Start the engine.
(g) The VSV for the EVAP is ON by the TOYOTA hand±held
tester and remains on for 5 sec.
CHECK:
Measure voltage between terminals PTNK and E2 of the ECM
connector 5 sec. after switching the VSV for the EVAP from ON
to OFF.
OK:
Voltage: 2.5 V or less
NG Replace charcoal canister.
OK

± DIAGNOSTICSENGINE (5S±FE)
DI±143
378 Author: Date:
DTC No.DTC Detecting ConditionTrouble Area
P0450
10 seconds or more after engine starting codition (a) or (b)
continues for 7 seconds or more:
(2 trip detection logic)
(a) vapor pressure sensor value < ±4 kpa (±30 mmHg,
±1.0 in.Hg)
(b) Vapor pressure sensor value
2.1 kpa (±15 mmHg,
0.4 in.Hg)

Open or short in vapor pressure sensor circuit

Vapor pressure sensor

ECM
F l t k fill h k l k d d d
P0451
Vapor pressure sensor output extremely changes under condi-
tions of (a), (b) and (c):
(2 trip detection logic)
(a) Vehicle speed: 0 km/h (0 mph)
(b) Engine speed: idling
(c) VSV for vapor pressure sensor is ON
Fuel tank over fill check valve cracked or damaged.
WIRING DIAGRAM
Refer to DTC P0440 (Evaporative Emission Control System Malfunction) on page DI±122.
INSPECTION PROCEDURE
HINT:

If DTC P0441 (Evaporative Emission Control System Incorrect Purge Flow), P0446 (Evaporative
Emission Control System Vent Control Malfunction), P0450 (Evaporative Emission Control System
Pressure Sensor Malfunction) or P0451 is output after DTC P0440 (Evaporative Emission Control Sys-
tem Malfunction), first troubleshoot DTC P0441, P0446, P0450 or P0451. If no malfunction is detected,
troubleshoot DTC P0440 next.

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.

When the ENGINE RUN TIME in the freeze frame data is less than 200 seconds, carefully check the
VSV for EVAP, charcoal canister and vapor pressure sensor.
1 Check voltage between terminals VC and E2 of ECM connector
(See page DI±122, step 9).
NG Check and replace ECM (See page IN±31).
OK

A00364
Vehicle Speed
60 ~ 120 km/h
(38 ~ 75 mph)
Idling
IG SW OFF
3 ~ 5 min.
Time
(1)(2)(4)
(3)
± DIAGNOSTICSENGINE (5S±FE)
DI±153
388 Author: Date:
CONFIRMATION DRIVING PATTERN
(1) Connect the TOYOTA hand±held tester to the DLC3.
(2) Switch the TOYOTA hand±held tester from normal mode to check mode (See page DI±3).
(3) Start the engine and warm it up with all accessory switches OFF.
(4) Drive the vehicle at 60 ~ 120 km/h (38 ~ 75 mph) and engine speed at 1,600 ~ 3,200 rpm for 3
~ 5 min.
HINT:
If a malfunction exists, the MIL will light up during step (4).
NOTICE:
If the conditions in this test are not strictly followed, detection of the malfunction will not be possible.
If you do not have a TOYOTA hand±held tester, turn the ignition switch OFF after performing steps
(3) and (4), then perform steps (3) and (4) again.
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.
1 Are there any other codes (besides DTC P1130) being output?
YES Go to relevant DTC chart.
NO