TOYOTA CAMRY 1999 Service Repair Manual

A07370S05309A07664
E1 TE1
SST
DLC1
A09429
DI±10
± DIAGNOSTICSENGINE
6 Check ignition timing.
PREPARATION:
(a) Warm up the engine to normal operating temperature.
(b) Shift the transmission into the N position.
(c) Keep the engine speed at idle.
(d) Using SST, connect terminals TE1 and E1 of the DLC1.
SST 09843±18020
(e) Using a timing light, connect the tester to the No.1 high±
tension cord.
CHECK:
Check the ignition timing.
OK:
Ignition timing: 10° BTDC at idle
NG Proceed to page IG±1 and continue to trouble-
shoot.
OK
Proceed to problem symptoms table on page
DI±21.
7 Check fuel shutoff valve for fuel tank.
PREPARATION:
(a) Be sure that enough fuel is in the tank.
(b) Connect the TOYOTA hand±held tester to the DLC3.
(c) Turn the ignition switch ON and push TOYOTA hand±held
tester main switch ON.
(d) Use the ACTIVE TEST mode to operate the fuel shutoff
valve for the fuel tank.
(e) Please refer to the TOYOTA hand±held tester operator's
manual for further details.
(f) If you have no TOYOTA hand±held tester, Connect be-
tween terminal FC of the ECM connector and body
ground.
CHECK:
Check the operating sound of the fuel shutoff valve for the fuel
tank when it is operated.

A00359
± DIAGNOSTICSENGINE
DI±11
OK:
There is operating sound from the shutoff valve.
NG Proceed to page SF±34 and continue to trouble-
shoot.
OK
8 Check for spark.
PREPARATION:
(a) Disconnect the high±tension cord from the spark plug.
(b) Remove the spark plug.
(c) Install the spark plug to the high±tension cord.
(d) Disconnect the injector connector.
(e) Ground the spark plug.
CHECK:
Check if spark occurs while the engine is being cranked.
NOTICE:
To prevent excess fuel from being injected from the injec-
tors during this test, don't crank the engine for more than
5 ± 10 seconds at a time.
NG Proceed to page IG±1 and continue to trouble-
shoot.
OK
Proceed to problem symptoms table on page
DI±21.
7. ENGINE OPERATING CONDITION
NOTICE:
The values given below for ºNormal Conditionº are representative values, so a vehicle may still be
normal even if its value varies from those listed here. So do not decide whether a part is faulty or
not solely according to the ºNormal Conditionº here.
(a) CARB mandated signals.
TOYOTA hand±held tester displayMeasurement ItemNormal Condition*1
FUEL SYS #1
Fuel System Bank 1
OPEN: Air±fuel ratio feedback stopped
CLOSED: Air±fuel ratio feedback operating
Idling after warming up: CLOSED
CALC LOADCalculator Load: Current intake air volume as a
proportion of max. intake air volumeIdling: 19.7 ± 50.4 %
Racing without load (2,500rpm): 16.8 ± 47.4 %
COOLANT TEMPEngine Coolant Temp. Sensor ValueAfter warming up: 80 ± 95°C (176 ± 203°F)

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 %

± DIAGNOSTICSENGINE
DI±13
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
*: 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.

DI00I±11
DI±14
± DIAGNOSTICSENGINE
DIAGNOSTIC TROUBLE CODE CHART
HINT:
Parameters listed in the chart may not be exactly the same as your reading due to the type of instrument
or other factors.
If a malfunction code is displayed during the DTC check in check mode, check the circuit for that code listed
in the table below. For details of each code, turn to the page referred to under the ''See page '' for the respec-
tive ''DTC No.'' in the DTC chart.
1. SAE CONTROLLED
DTC No.
(See page)Detection ItemTrouble AreaMIL*Memory
P0105
(DI±22)Manifold Absolute Pressure/
Barometric Pressure Circuit Mal-
function
Open or short in manifold absolute pressure sensor circuit

Manifold absolute pressure sensor

ECM

P0106
(DI±25)Manifold Absolute Pressure Cir-
cuit Range/Performance Prob-
lem
Vacuum line

Manifold absolute pressure sensor
P0110
(DI±26)Intake Air Temp. Circuit Malfunc-
tion
Open or short in intake air temp. sensor circuit

Intake air temp. sensor

ECM

P0115
(DI±30)Engine Coolant Temp. Circuit
Malfunction
Open or short in engine coolant temp. sensor circuit

Engine coolant temp. sensor

ECM

P0116
(DI±34)Engine Coolant Temp. Circuit
Range/Performance Problem
Cooling system

Engine coolant temp. sensor
P0120
(DI±35)Throttle/Pedal Position Sensor/
Switch ºAº Circuit Malfunction
Open or short in throttle position sensor circuit

Throttle position sensor

ECM

P0121
(DI±39)Throttle/Pedal Position Sensor/
Switch ºAº Circuit Range/Perfor-
mance Problem

Throttle position sensor
P0125
(DI±40)Insufficient Coolant Temp. for
Closed Loop Fuel Control

Open or short in A/F sensor (bank 1 sensor 1) circuit

A/F sensor (bank 1 sensor 1)

Air induction system

EGR system

Fuel pressure

Injector

Gas leakage on exhaust system

ECM

P0136
(DI±45)Oxygen Sensor Circuit Malfunc-
tion (Bank 1 Sensor 2)
Open or short in heated oxygen sensor circuit

Heated oxygen sensor
P0141
(DI±47)Oxygen Sensor Heater Circuit
Malfunction (Bank 1 Sensor 2)
Open or short in heater circuit of heated oxygen sensor

Heated oxygen sensor heater

ECM

P0171
(DI±49)System too Lean (Fuel Trim)

Air induction system

Injector blockage

Manifold absolute pressure sensor

Engine coolant temp. sensor

Fuel shutoff valve for delivery pipe

Gas leakage on exhaust system

Open or short in A/F sensor (bank 1 sensor 1) circuit

A/F sensor (bank 1 sensor 1)

ECM


± DIAGNOSTICSENGINE
DI±15
P0172
(DI±49)System too Rich (Fuel Trim)

Injector leak, blockage

Manifold absolute pressure sensor

Engine coolant temp. sensor

Ignition system

Fuel shutoff valve for delivery pipe

Gas leakage on exhaust system

Open or short in A/F sensor (bank 1 sensor 1) circuit

A/F sensor (bank 1 sensor 1)

ECM

P0180
(DI±54)Fuel Temperature Sensor ºAº
Circuit Malfunction

Open or short in fuel temperature sensor circuit for delivery
pipe

Fuel temperature sensor for delivery pipe

ECM

P0190
(DI±56)Fuel Rail Pressure Sensor Cir-
cuit Malfunction
Open or short in fuel pressure sensor circuit for delivery pipe

Fuel pressure sensor for delivery pipe

ECM

P0335
(DI±59)Crankshaft Position Sensor ºAº
Circuit Malfunction

Open or short in crankshaft position sensor circuit

Crankshaft position sensor

Crankshaft timing pulley

ECM

P0340
(DI±61)Camshaft Position Sensor Circuit
Malfunction

Open or short in camshaft position sensor circuit

Camshaft position sensor

Camshaft timing pulley

ECM

P0400
(DI±63)Exhaust Gas Recirculation Flow
Malfunction

Vacuum or EGR hose is connected to wrong post

Open or short in VSV circuit for EGR

VSV for EGR

EGR system

EGR vacuum modulator

EGR valve

Manifold absolute pressure sensor

ECM

P0500
(DI±69)Vehicle Speed Sensor Malfunc-
tion

Combination meter

Open or short in vehicle speed sensor circuit

Vehicle speed sensor

ECM

P0505
(DI±72)Idle Control System Malfunction

Open or short in IAC valve circuit

IAC valve is stuck or closed

Open or short in A/C switch circuit

Air induction system

ECM

*: MIL lights up
2. MANUFACTURER CONTROLLED
DTC No.
(See Page)Detection ItemTrouble AreaMIL*Memory
P1130
(DI±79)A/F Sensor Circuit Range/Perfor-
mance Malfunction (Bank 1 Sen-
sor 1)

Open or short in A/F sensor circuit

A/F sensor

Air induction system

EGR system

Fuel pressure

Injector

ECM

P1135
(DI±84)A/F Sensor Heater Circuit Mal-
function (Bank 1 Sensor 1)
Open or short in heater circuit of A/F sensor

A/F sensor heater

ECM


DI±16
± DIAGNOSTICSENGINE
P1190
(DI±86)
Fuel Pressure Regulator Mal-
function

Open or short in fuel shutoff valve circuit for fuel tank

Fuel shutoff valve for fuel tank

Open or short in fuel shutoff valve circuit for fuel pressure reg-
ulator

Fuel shutoff valve for fuel pressure regulator

Fuel pressure regulator

Open or short in fuel shutoff valve circuit for fuel delivery pipe

Fuel shutoff valve for fuel delivery pipe

ECM

P1240
(DI±95)Fuel Fuel Shutoff Valve Circuit
for Delivery Pipe Malfunction
Open or short in fuel shutoff valve circuit for fuel delivery pipe

Fuel shutoff valve for fuel delivery pipe

ECM
±
P1245
(DI±98)Fuel Fuel Shutoff Valve Circuit
for Pressure Regulator Malfunc-
tion
Open or short in fuel shutoff valve circuit for fuel pressure reg-
ulator

Fuel shutoff valve for fuel pressure regulator

ECM
±
P1300
(DI±102)Igniter Circuit Malfunction (No.1)

Ignition system

Open or short in IGF or IGT1 circuit from No.1 ignition coil with
igniter to ECM

No.1 ignition coil with igniter

ECM

P1310
(DI±102)Igniter Circuit Malfunction (No.2)

Ignition system

Open or short in IGF or IGT2 circuit from No.2 ignition coil with
igniter to ECM

No.2 ignition coil with igniter

ECM

P1335
(DI±107)Crankshaft Position Sensor Cir-
cuit Malfunction (During engine
running)
Open short in crankshaft position sensor circuit

Crankshaft position sensor

Crankshaft timing pulley

ECM
±
P1520
(DI±108)Stop Light Switch Signal Mal-
function
Short in stop light switch signal circuit

Stop light switch

ECM

P1600
(DI±110)ECM BATT Malfunction
Open in back up power source circuit

ECM
P1780
(DI±112)Park/Neutral Position Switch
Malfunction
Short in park/neutral position switch circuit

Park/neutral position switch

ECM

*:  ... MIL lights up. ± ... MIL does not light up.

DI1JS±04
A09176
Crankshaft Position
SensorVSV for EGR DLC1
Camshaft Position
Sensor InjectorECMThrottle Position SensorManifold Absolute
Pressure Sensor
Combination Meter
for Speedometer
DLC3
Heated Oxygen
Sensor (Bank 1
Sensor 2)
Intake Air Temperature
Sensor
Idle Air Control
Valve
Ignition Coil (No.1, No.2) Park/Neutral
Position Switch Engine Coolant
Temperature
Sensor A/F Sensor
Bank 1
Sensor 1)
Fuel Pressure
Sensor for
Delivery Pipe
Fuel Pressure Regulator
Fuel Temperature
Sensor for Fuel
Tank
Fuel Temperature
Sensor for
Delivery Pipe
Fuel Shutoff Valve for
Pressure Regulator
Fuel Pressure Sensor
for Fuel Pipe
Fuel Shutoff Valve
for Fuel Tank
± DIAGNOSTICSENGINE
DI±17
PARTS LOCATION

DI64T±01
A02958
E4ECM Terminals
E6E5E7
11
19
1412 10 9 8
7652
43
18 21 22
20
16151
13
17 11 14
109
87 652 4
3
21 2220
16 15 131
12 11 1 09
652
43 1 12
7 8
19
14
109 8
7652
43
18
23 2416
151
17
11 12 13 25
26 DI±18
± DIAGNOSTICSENGINE
TERMINALS OF ECM
Symbols (Terminals No.)Wiring ColorConditionSTD Voltage (V)
BATT (E4±1) ± E1 (E6±16)B±Y e BRAlways9 ± 14
+B (E4±12) ± E1 (E6±16)B±Y e BRIG switch ON9 ± 14
VC (E5±1) ± E2 (E5±9)Ye BRIG switch ON4.5 ± 5.5
PIM (E5 2) E2 (E5 9)BYBR
IG switch ON3.3 ± 3.9
PIM (E5±2) ± E2 (E5±9)B±Y e BRApply vacuum 26.7 kPa (200 mmHg, 7.9 in.Hg)2.5 ± 3.1
THA (E5±3) ± E2 (E5±9)Y±B e BRIdling, Intake air temp. 20°C (68° F)0.5 ± 3.4
THW (E5±4) ± E2 (E5±9)G±B e BRIdling, Engine coolant temp. 80°C (176°F)0.2 ± 1.0
VTA (E5 11) E2 (E5 9)LGBRIG switch ON, Throttle valve fully closed0.3 ± 1.0VTA (E5±11) ± E2 (E5±9)LG e BRIG switch ON, Throttle valve fully open3.2 ± 4.9
AF+ (E5±6) ± E1 (E6±16)L e BRAlways (IG switch ON)3.3 fixed*
AF± (E5±14) ± E1 (E6±16)B±W e BRAlways (IG switch ON)3.0 fixed*
HT2 (E6 21) E1 (E6 16)PBBRIdlingBelow 3.0HT2 (E6±21) ± E1 (E6±16)P±B e BRIG switch ON9 ± 14
THCNG2 (E7±6) ± E2 (E5±9)P±B e BR
IG switch ON, Fuel temperature ±20°C (4° F)
20°C (68° F)
80°C (176° F)0.66 ± 0.78
2.5 ± 2.75
4.42 ± 4.52
PCNG2 (E7±5) ± E2 (E5±9)G±B e BRIdling ON, Fuel temperature 20°C (68° F)3.1 ± 3.6
STA (E4 11) E1 (E6 16)GRBRCki60STA (E4±11) ± E1 (E6±16)GR e BRCranking6.0 or more
IGT1 (E6±20) ± E1 (E6±16)B e BRIdlingPulse generation
(See page DI±102)
IGT2 (E6±19) ± E1 (E6±16)Y±R e BRIdlingPulse generation
(See page DI±102)
IG switch ON, Disconnect ignition coil connector4.5 ± 5.5
IGF (E6±3) ± E1 (E6±16)W±R e BRIdlingPulse generation
(See page DI±102)
G (E6±5) ± NE± (E6±17)B±W e LIdlingPulse generation
(See page DI±59)
NE (E6±4) ± NE± (E6±17)B±R e LIdlingPulse generation
(See page DI±59)
EGR (E6±23) ± E01(E6±13)P±B e BRIG switch ON0 ± 3
OX2 (E5±5) ± E1 (E6±16)B e BRMaintain engine speed at 2,500 rpm for 2 min. after warming upPulse generation
RSD (E6±10) ± E1 (E6±16)W e BRIG switch ON9 ~ 14
FC (E4±14) ± E01 (E6±13)G±R e BRIG switch ON9 ± 14

± DIAGNOSTICSENGINE
DI±19
VCNG2 (E7±9) ± E01 (E6±13)Y±G e BRIdling ON,9 ± 14
VCNG3 (E7±4) ± E01 (E6±13)P e BRIdling ON,9 ± 14
NSW (E4 6) E1 (E6 16)BWBRIG switch ON, Other shift position in P or N9 ± 14NSW (E4±6) ± E1 (E6±16)B±W e BRIG switch ON, Shift position in P or N0 ± 3.0
SPD (E4±9) ± E1 (E6±16)V±W e BRIG switch ON, Rotate driving wheel slowlyPulse generation
(See page DI±69)
TE1 (E5±15) ± E1 (E6±16)L±W e BRIG switch ON9 ± 14
W (E4 5) E1 (E6 16)GRBRIdling9 ± 14W (E4±5) ± E1 (E6±16)G±R e BRIG switch ONBelow 3.0
HTAF (E4 2) E04 (E4 13)GBR
IdlingBelow 3.0
HTAF (E4±2) ± E04 (E4±13)G e BRIG switch ON9 ± 14
LOCK IN (E6±18) ± E1 (E6±16)W±L e BRA/C compressor is operatingPulse generation
(See page DI±119)
LOCK (E4±15) ± E1 (E6±16)R±W e BRA/C indicator light lights upBelow 4.0
A/C SW (E4 10) E1 (E6 16)RBBRA/C switch ON9 ± 14A/C SW (E4±10) ± E1 (E6±16)R±B e BRA/C switch OFFBelow 1.0
PRS (E7±10) ± E1 (E6±16)G e BRA/C pressure is normallyBelow 1.0
MGC (E4 21) E01 (E6 13)LYBRA/C magnetic clutch ONBelow 1.0MGC (E4±21) ± E01 (E6±13)L±Y e BRA/C magnetic clutch OFF9 ± 14
STP (E4 4) E1 (E6 16)GWBRIG switch ON, Brake pedal depressed7.5 ± 14STP (E4±4) ± E1 (E6±16)G±W e BRIG switch ON, Brake pedal releasedBelow 1.5
SIL (E4±16) ± E1 (E6±16)W e BRDuring transmissionPulse generation
TACH (E4±8) ± E1 (E6±16)B±O eBRIdlingPulse generation
THCNG1 (E7±1) ± E2 (E5±9)LG±B e BR
IG switch ON at fuel temperature ±30°C (22° F)
25°C (77° F)
40°C (104° F)
100°C (212° F)0.56 ± 0.45
3.39 ± 3.29
4.0 ± 3.9
4.85 ± 4.82
IG switch ON9 ~ 14
#10 (E6±12) ± E01 (E6±13)B ± W e BRIdlingPulse generation
(See page DI±127)
IG switch ON9 ~ 14
#20 (E6±11) ± E01 (E6±13)B ±R e BRIdlingPulse generation
(See page DI±127)
IG switch ON9 ~ 14
#30 (E6±25) ± E01 (E6±13)R e BRIdlingPulse generation
(See page DI±127)
IG switch ON9 ~ 14
#40 (E6±24) ± E01 (E6±13)B ± W e BRIdlingPulse generation
(See page DI±127)
#10 (E6 2) E01 (E6 13)LBRIG it h ON914#10+ (E6±2) ± E01 (E6±13) L e BRIG switch ON9 ~ 14
#20 (E6 1) E01 (E6 13)BBRIG it h ON914#20+ (E6±1) ± E01 (E6±13)B e BRIG switch ON9 ~ 14
#30 (E6 15) E01 (E6 13)GBRIG it h ON914#30+ (E6±15) ± E01 (E6±13)G e BRIG switch ON9 ~ 14
#40+ (E6±14) ± E01 (E6±13)L e BRIG switch ON9 ~ 14