ECU TOYOTA CAMRY 1999 Service Repair Manual

± AIR CONDITIONINGAIR CONDITIONING SYSTEM
AC±9
2491 Author: Date:
3. INSPECT IDLE±UP SPEED
(a) Warm up engine.
(b) Inspect idle±up speed when the these conditions are es-
tablished.

Warm up engine

Blower speed control switch at ºHIº position

A/C switch ON

Temperature control dial at ºCOOLº position
Magnetic clutch conditionIdle±up speed
Magnetic clutch not engaged700 ± 50 rpm
Magnetic clutch engaged700 ± 50 rpm
If idle speed is not as specified, check ISC valve and air intake
system.
4. INSPECT FOR LEAKAGE OF REFRIGERANT
(a) Perform in these conditions:

Stop engine.

Secure good ventilation (If not the gas leak detector
may react to volatile gases witch are not refrigerant,
such as evaporated gasoline and exhaust gas.)

Repeat the test 2 or 3 times.

Make sure that there is some refrigerant remaining
in the refrigeration system.
When compressor is OFF: approx. 392 ± 588 kPa
(4 ± 6 kgf/ cm
2, 57 ± 85 psi)
(b) Bring the gas leak detector close to the drain hose before
performing the test.
HINT:

After the blower motor stopped, leave the cooling unit for
more than 15 minutes.

Expose the gas leak detector sensor the under the drain
hose.

When bring the gas leak detector close to the drain hose,
make sure that the gas leak detector does not react to the
volatile gases.
If such reaction is unavoidable, the vehicle must be lifted up.
(c) If gas leak is not detected on the drain hose, remove the
blower resistor from the cooling unit. Then insert the gas
leak detector sensor into the unit and perform the test.
(d) Disconnect the connector and leave the pressure switch
for approx. 20 minutes. Then bring the gas leak detector
close to the pressure switch and perform the test.
(e) Bring the gas leak detector close to the refrigerant lines
and perform the test.

AX03E±01
D00759
Shift Lock Override Cover
Shift Lock Override Button
Shift Lock Solenoid
Shift Lock Control Switch
Shift Lock Control ECU Key Interlock SolenoidStop Light Switch AX±14
± AUTOMATIC TRANSAXLE (A140E)SHIFT LOCK SYSTEM (TMMK Made)
1907 Author: Date:
SHIFT LOCK SYSTEM (TMMK Made)
LOCATION

AX03F±01
Q09459
4 (P2)
2 (SLS
+) 5 (SLS
±)
3 (P1)3 (IG)
6 (STP)1 (ACC)
4 (KLS
+)1 (P) Back Side
Front Side A
B
Q09460
2 (SLS+) 5 (SLS
±)
Q09461
2 (SLS+) 5 (SLS
±)
± AUTOMATIC TRANSAXLE (A140E)SHIFT LOCK SYSTEM (TMMK Made)
AX±15
1908 Author: Date:
INSPECTION
1. INSPECT SHIFT LOCK CONTROL ECU
Using a voltmeter, measure voltage at each terminal.
HINT:
Do not disconnect the ECU connector.
TerminalMeasuring ConditionVoltage (V)
A, 1 ± A, 5 (ACC ± E)Ignition switch ACC10 ± 14
A, 3 ± A, 5 (IG ± E)Ignition switch ON10 ± 14
A, 6 ± A, 5 (STP ± E)Depressing brake pedal10 ± 14
A, 4 ± A, 5 (KLS+ ± E)
(1) Ignition switch ACC and P position
(2) Ignition switch ACC and except P position
(3) Ignition switch ACC and except P position (After approx. 1 second)0
7.5 ± 11
6 ± 9.5
B, 2 ± B, 5 (SLS+ ± SLS±)
(1) Ignition switch ON and P position
(2) Depress brake pedal
(3) Except P position0
8 ± 13.5
0
B, 3 ± B, 1 (P1 ± P)(1) Ignition switch ON, P position and depressing brake pedal
(2) Shift except P position under conditions above0
9 ± 13.5
B, 4 ± B, 1 (P2 ± P)(1) Ignition switch ACC, P position
(2) Shift except P position under conditions above9 ± 13.5
0
2. INSPECT SHIFT LOCK SOLENOID
(a) Disconnect the solenoid connector.
(b) Using an ohmmeter, measure resistance between termi-
nals.
Standard resistance: 29 ± 35 W
If resistance value is not as specified, replace the solenoid.
(c) Apply battery positive voltage between terminals. Check
that operation noise can be heard from the solenoid.
If the solenoid does not operate, replace the solenoid.

Q10058
Q10059
Q00251
AX±20
± AUTOMATIC TRANSAXLE (A140E)AUTOMATIC TRANSAXLE UNIT
1913 Author: Date:
14. REMOVE EXHAUST MANIFOLD STAY
Remove the 2 bolts and exhaust manifold stay.
Torque: 42 N´m (430 kgf´cm, 31 ft´lbf)
15. REMOVE TRANSAXLE±TO±ENGINE BOLT
Torque: 66 N´m (670 kgf´cm, 48 ft´lbf)
16. REMOVE ENGINE HOOD
(a) Disconnect the washer pipe.
(b) Remove the 4 bolts and engine hood.
Torque: 14 N´m (145 kgf´cm, 10 ft´lbf)
17. RAISE AND SUPPORT VEHICLE SECURELY
18. REMOVE FRONT WHEELS
Torque: 103 N´m (1,050 kgf´cm, 76 ft´lbf)
19. REMOVE ENGINE UNDER COVER AND CENTER EN-
GINE UNDER COVER
20. DISCONNECT SHIFT CONTROL CABLE
(a) Remove the nut and disconnect the shift control cable
from the park/neutral position switch.
Torque: 15 N´m (150 kgf´cm, 11 ft´lbf)
(b) Remove the clip and disconnect the shift control cable
from the bracket.
21. REMOVE DIFFERENTIAL FLUID DRAIN PLUG AND
GASKET
HINT:
At the time of installation, please refer to the following item.
Replace the used gasket with a new gasket.
22. DRAIN DIFFERENTIAL FLUID
23. REMOVE LH AND RH FENDER APRON SEALS
24. REMOVE LH AND RH DRIVE SHAFTS
(See page SA±17)

AX03V±01
D01027
Key Interlock Solenoid
Shift Lock Control ECU Shift Lock Override Cover
Shift Lock Control SwitchShift Lock Override Button Stop Light Switch
Shift Lock Solenoid
AX±18
± AUTOMATIC TRANSAXLE (A541E)SHIFT LOCK SYSTEM (TMMK Made)
1938 Author: Date:
SHIFT LOCK SYSTEM (TMMK Made)
LOCATION

AX03W±01
Q09459
1 (ACC)
1 (P)
4 (KLS+) 3 (IG)
6 (STP)
5 (E)
BBack Side
Front Side A
4 (P2)
5 (SLS±)
3 (P1)
2 (SLS+)
Q09460
5 (SLS±)
2 (SLS+)
Q09461
5 (SLS±)
2 (SLS+)
± AUTOMATIC TRANSAXLE (A541E)SHIFT LOCK SYSTEM (TMMK Made)
AX±19
1939 Author: Date:
INSPECTION
1. INSPECT SHIFT LOCK CONTROL ECU
Using a voltmeter, measure voltage at each terminal.
HINT:
Do not disconnect the ECU connector.
TerminalMeasuring ConditionVoltage (V)
A, 1 ± A, 5 (ACC ± E)Ignition switch ACC10 ± 14
A, 3 ± A, 5 (IG ± E)Ignition switch ON10 ± 14
A, 6 ± A, 5 (STP ± E)Depressing brake pedal10 ± 14
A, 4 ± A, 5 (KLS+ ± E)
(1) Ignition switch ACC and P position
(2) Ignition switch ACC and except P position
(3) Ignition switch ACC and except P position (After approx. 1 second)0
7.5 ± 11
6 ± 9.5
B, 2 ± B, 5 (SLS+ ± SLS±)
(1) Ignition switch ON and P position
(2) Depress brake pedal
(3) Except P position0
8 ± 13.5
0
B, 3 ± B, 1 (P1 ± P)(1) Ignition switch ON, P position and depress brake pedal
(2) Shift except P position under conditions above0
9 ± 13.5
B, 4 ± B, 1 (P2 ± P)(1) Ignition switch ACC, P position
(2) Shift except P position under conditions above9 ± 13.5
0
2. INSPECT SHIFT LOCK SOLENOID
(a) Disconnect the solenoid connector.
(b) Using an ohmmeter, measure resistance between termi-
nals.
Standard resistance: 29 ± 35 W
If resistance value is not as specified, replace the solenoid.
(c) Apply battery positive voltage between terminals. Check
that operation.
If the solenoid does not operated, replace the solenoid noise
can be heard from the solenoid.

Q06478
Q10286
Q06530
Q10038
AX±24
± AUTOMATIC TRANSAXLE (A541E)AUTOMATIC TRANSAXLE UNIT
1944 Author: Date:
12. REMOVE 2 FRONT SIDE ENGINE MOUNTING BOLTS
Torque:
TMC Made: 80 N´m (820 kgf´cm, 59 ft´lbf)
TMMK Made:
Green color bolt: 66 N´m (670 kgf´cm, 48 ft´lbf)
Silver color bolt: 44 N´m (440 kgf´cm, 32 ft´lbf)
13. REMOVE STARTER AND A/T SHIFT CABLE CLAMP
(a) Disconnect the connector and remove the nut.
(b) Remove the 2 bolts, starter and A/T shift cable clamp.
Torque: 39 N´m (400 kgf´cm, 29 ft´lbf)
14. REMOVE EXHAUST MANIFOLD BRACKET MOUNT-
ING BOLT
Torque:
Except California: 20 N´m (200 kgf´cm, 15 ft´lbf)
California: 34 N´m (350 kgf´cm, 25 ft´lbf)
15. REMOVE 5 TRANSAXLE±TO±ENGINE BOLTS AND
DISCONNECT GROUND TERMINAL
Torque: 66 N´m (670 kgf´cm, 48 ft´lbf)
16. REMOVE ENGINE HOOD
(a) Disconnect the washer pipe.
(b) Remove the 4 bolts and engine hood.
Torque: 26 N´m (265 kgf´cm, 19 ft´lbf)
17. RAISE AND SUPPORT VEHICLE SECURELY
18. REMOVE FRONT WHEELS
Torque: 103 N´m (1,050 kgf´cm, 76 ft´lbf)
19. REMOVE DIFFERENTIAL FLUID DRAIN PLUG AND
GASKET
HINT:
At the time of installation, please refer to the following item.
Replace the used gasket with a new gasket.
20. DRAIN DIFFERENTIAL FLUID
21. REMOVE LH AND RH ENGINE SIDE COVERS
22. REMOVE LH AND RH FRONT DRIVE SHAFTS
(See page SA±25)

INTRODUCTIONGENERAL REPAIR INSTRUCTIONS ±
IN±4
GENERAL REPAIR INSTRUCTIONS
1. Use fender, seat and floor covers to keep the vehicle
clean and prevent damage.
2. During disassembly, keep parts in the appropriate order
to facilitate reassembly.
3. Observe the following:
(a) Before performing electrical work, disconnect the
negative (±) terminal cable from the battery.
(b) If it is necessary to disconnect the battery for inspec-
tion or repair, always disconnect the cable from the
negative (±) terminal which is grounded to the ve-
hicle body.
(c) To prevent damage to the battery terminal post, loos-
en the terminal nut and raise the cable straight up
without twisting or prying it.
(d) Clean the battery terminal posts and cable terminals
with a clean shop rag. Do not scrape them with a file
or other abrasive objects.
(e) Install the cable terminal to the battery post with the
nut loose, and tighten the nut after installation. Do
not use a hammer to tap the terminal onto the post.
(f) Be sure the cover for the positive (+) terminal is prop-
erly in place.
4. Check hose and wiring connectors to make sure that they
are secure and correct.
5. Non±reusable parts
(a) Always replace cotter pins, gaskets, O±rings and oil
seals etc. with new ones.
(b) Non±reusable parts are indicated in the component
illustrations by the ºº symbol.
6. Precoated parts
Precoated parts are bolts and nuts, etc. that are coated
with a seal lock adhesive at the factory.
(a) If a precoated part is retightened, loosened or
caused to move in any way, it must be recoated with
the specified adhesive.
(b) When reusing precoated parts, clean off the old
adhesive and dry with compressed air. Then applyIN022±07

INTRODUCTIONGLOSSARY OF SAE AND TOYOTA TERMS ±
IN±6
GLOSSARY OF SAE AND TOYOTA TERMS
This glossary lists all SAE±J1930 terms and abbreviations used in this manual in compliance with SAE
recommendations, as well as their Toyota equivalents.
SAE
ABBREVIATIONSSAE TERMSTOYOTA TERMS
( )±±ABBREVIATIONS
A/CAir ConditioningAir Conditioner
ACLAir CleanerAir Cleaner
AIRSecondary Air InjectionAir Injection (AI)
APAccelerator Pedal±
B+Battery Positive Voltage+B, Battery Voltage
BAROBarometric Pressure±
CACCharge Air CoolerIntercooler
CARBCarburetorCarburetor
CFIContinuous Fuel Injection±
CKPCrankshaft PositionCrank Angle
CLClosed LoopClosed Loop
CMPCamshaft PositionCam Angle
CPPClutch Pedal Position±
CTOXContinuous Trap Oxidizer±
CTPClosed Throttle Position±
DFIDirect Fuel Injection (Diesel)Direct Injection (DI)
DIDistributor Ignition±
DLC1
DLC2
DLC3Data Link Connector 1
Data Link Connector 2
Data Link Connector 31: Check Connector
2: Toyota Diagnosis Communication Link (TDCL)
3: OBD@@@@@: [g 2] Diagnostic Connector
DTCDiagnostic Trouble CodeDiagnostic Code
DTMDiagnostic Test Mode±
ECLEngine Control Level±
ECMEngine Control ModuleEngine ECU (Electronic Control Unit)
ECTEngine Coolant TemperatureCoolant Temperature, Water Temperature (THW)
EEPROMElectrically Erasable Programmable Read Only
MemoryElectrically Erasable Programmable Read Only Memory
(EEPROM),
Erasable Programmable Read Only Memory(EPROM)
EFEEarly Fuel EvaporationCold Mixture Heater (CMH), Heat Control Valve (HCV)
EGRExhaust Gas RecirculationExhaust Gas Recirculation (EGR)
EIElectronic IgnitionToyota Distributorless Ignition (TDI)
EMEngine ModificationEngine Modification (EM)
EPROMErasable Programmable Read Only MemoryProgrammable Read Only Memory (PROM)
EVAPEvaporative EmissionEvaporative Emission Control (EVAP)
FCFan Control±
FEEPROMFlash Electrically Erasable Programmable
Read Only Memory±
FEPROMFlash Erasable Programmable Read Only Memory±
FFFlexible Fuel±
FPFuel PumpFuel Pump
GENGeneratorAlternator
GNDGroundGround (GND)
HO2SHeated Oxygen SensorHeated Oxygen Sensor (HO2S)
IN016±02

INTRODUCTIONGLOSSARY OF SAE AND TOYOTA TERMS ±
IN±7
IACIdle Air ControlIdle Speed Control (ISC)
IATIntake Air TemperatureIntake or Inlet Air Temperature
ICMIgnition Control Module±
IFIIndirect Fuel InjectionIndirect Injection
IFSInertia Fuel±Shutoff±
ISCIdle Speed Control±
KSKnock SensorKnock Sensor
MAFMass Air FlowAir Flow Meter
MAPManifold Absolute PressureManifold Pressure
Intake Vacuum
MCMixture Control
Electric Bleed Air Control Valve (EBCV)
Mixture Control Valve (MCV)
Electric Air Control Valve (EACV)
MDPManifold Differential Pressure±
MFIMultiport Fuel InjectionElectronic Fuel Injection (EFI)
MILMalfunction Indicator LampCheck Engine Light
MSTManifold Surface Temperature±
MVZManifold Vacuum Zone±
NVRAMNon±Volatile Random Access Memory±
O2SOxygen SensorOxygen Sensor, O2 Sensor (O2S)
OBDOn±Board DiagnosticOn±Board Diagnostic (OBD)
OCOxidation Catalytic ConverterOxidation Catalyst Converter (OC), CCo
OPOpen LoopOpen Loop
PAIRPulsed Secondary Air InjectionAir Suction (AS)
PCMPowertrain Control Module±
PNPPark/Neutral Position±
PROMProgrammable Read Only Memory±
PSPPower Steering Pressure±
PTOXPeriodic Trap OxidizerDiesel Particulate Filter (DPF)
Diesel Particulate Trap (DPT)
RAMRandom Access MemoryRandom Access Memory (RAM)
RMRelay Module±
ROMRead Only MemoryRead Only Memory (ROM)
RPMEngine SpeedEngine Speed
SCSuperchargerSupercharger
SCBSupercharger Bypass±
SFISequential Multiport Fuel InjectionElectronic Fuel Injection (EFI), Sequential Injection
SPLSmoke Puff Limiter±
SRIService Reminder Indicator±
SRTSystem Readiness Test±
STScan Tool±
TBThrottle BodyThrottle Body
TBIThrottle Body Fuel InjectionSingle Point Injection
Central Fuel Injection (Ci)
TCTurbochargerTurbocharger
TCCTorque Converter ClutchTorque Converter
TCMTransmission Control ModuleTransmission ECU (Electronic Control Unit)
TPThrottle PositionThrottle Position
TRTransmission Range±