1999 TOYOTA CAMRY light

Input SignalIndicator Light
Blinking Pattern
Turn PNP switch
OFF (Shift to posi-
tions except D )LightON
OFFSW ON
SW OFF
± DIAGNOSTICSCRUISE CONTROL SYSTEM
DI±905
1140 Author: Date:
INSPECTION PROCEDURE
1 Check starter operation.
CHECK:
Check that the starter operates normally and that the engine starts.
NG Proceed to engine troubleshooting.
(5S±FE: See page ST±1)
(1MZ±FE: See page ST±1).
OK
2 Input signal check.
PREPARATION:
See input signal check on page DI±870.
CHECK:
Check the indicator light when shifting into positions except D.
OK:
The indicator light goes off when shifting into posi-
tions except D.
OK Proceed to next circuit inspection shown on
problem symptoms table (See page DI±879).
NG

Input Signal
Indicator Light
Blinking Pattern
Clutch switch
OFF (Depress
clutch pedal)
LightON
OFFSW ON
SW OFF
± DIAGNOSTICSCRUISE CONTROL SYSTEM
DI±907
1142 Author: Date:
Clutch Switch Circuit
CIRCUIT DESCRIPTION
When the clutch pedal is depressed, the clutch switch sends a signal to the cruise control ECU. When the
signal is input to the cruise control ECU during cruise control driving, the cruise control ECU cancels cruise
control.
WIRING DIAGRAM
Refer to PNP switch circuit on page DI±904.
INSPECTION PROCEDURE
1 Check starter operation.
CHECK:
Check that the starter operates normally and that the engine starts.
NG Proceed to engine troubleshooting
(5S±FE: See page ST±1)
(1MZ±FE: See page ST±1).
OK
2 Input signal check.
PREPARATION:
See input signal check on page DI±870.
CHECK:
Check the indicator lights when clutch pedal is depressed.
OK:
The indicator light goes off when shifting into clutch
pedal is depressed.
OK Proceed to next circuit inspection shown on
problem symptoms table (See page DI±879).
NG
DI08W±04

Input Signal
Indicator Light
Blinking Pattern
Clutch switch
OFF (Depress
clutch pedal)
LightON
OFFSW ON
SW OFF
± DIAGNOSTICSCRUISE CONTROL SYSTEM
DI±907
1142 Author: Date:
Clutch Switch Circuit
CIRCUIT DESCRIPTION
When the clutch pedal is depressed, the clutch switch sends a signal to the cruise control ECU. When the
signal is input to the cruise control ECU during cruise control driving, the cruise control ECU cancels cruise
control.
WIRING DIAGRAM
Refer to PNP switch circuit on page DI±904.
INSPECTION PROCEDURE
1 Check starter operation.
CHECK:
Check that the starter operates normally and that the engine starts.
NG Proceed to engine troubleshooting
(5S±FE: See page ST±1)
(1MZ±FE: See page ST±1).
OK
2 Input signal check.
PREPARATION:
See input signal check on page DI±870.
CHECK:
Check the indicator lights when clutch pedal is depressed.
OK:
The indicator light goes off when shifting into clutch
pedal is depressed.
OK Proceed to next circuit inspection shown on
problem symptoms table (See page DI±879).
NG
DI08W±04

I00290
Cruise Control ECU
4
PI
O D DJ/C
O IG25
O 10
7
R±L D DJ/C
R±L
Instrument Panel J/B
2
1D
1K1
B±Y4IG1AM1 Ignition Switch
2
W
Instrument Panel J/B
AM1 GAUGE
2
1K 1
1B
B±R 1
ALT FL BLOCK
1
B±G
FL MAIN
BatteryCRUISE MAIN
Indicator Light
(in Combination Meter)
C15
J2
C10
C10 J4
F9
F4 DI±914
± DIAGNOSTICSCRUISE CONTROL SYSTEM
1149 Author: Date:
CRUISE MAIN Indicator Light Circuit
CIRCUIT DESCRIPTION
When the cruise control main switch is turned ON, CRUISE MAIN indicator light lights up.
WIRING DIAGRAM
DI090±17

DI1KF±04
ENGINE IMMOBLISER Check SheetInspector 's
Name:
Customer 's Name
Date Vehicle
Brought InRegistration YearRegistration No.
Frame No.
Odometer Reading/ /
/ /
Date Problem First Occurred
Frequency Problem Occurs/ /
ContinuousIntermittent ( times a day)
DTC Check1st Time
2nd TimeNormal Code
Malfunction Code (Code )
Normal CodeMalfunction Code (Code )
Symptomskm
miles
Engine does not start.
Check ItemMalfunction
Indicator LampNormal
Remains ON Does not Light Up
Immobiliser is not set.
(Engine starts with key codes other than the registered key code.)
DI±920
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
1155 Author: Date:
CUSTOMER PROBLEM ANALYSIS CHECK

S05335
TOYOTA hand±held tester
DLC3
DI1KG±04
N09214
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
DI±921
1156 Author: Date:
PRE±CHECK
1. DIAGNOSIS SYSTEM
(a) Description
ECM controls the function of immobiliser on this vehicle.
Data of the immobiliser or DTC can be read form DLC3 of
the vehicle. When a trouble occurs in immobiliser, MIL
does not light ON but DTC inspection is performed.
Therefore when there seems to be a trouble with immobi-
liser, use TOYOTA hand±held tester or SST to check and
troubleshoot it.
(b) DLC3 INSPECTION
The vehicle's ECM uses ISO 9141±2 for communication.
The terminal arrangement of DLC3 complies with
SAEJ1962 and matches the ISO 9141±2 format.
Tester connectionconditionSpecified condition
7 (Bus
Line) ± 5 (Signal ground)During communicationPulse generation
4 (chassis Ground) ± BodyAlways1 W or less
5 (Signal Ground) ± BodyAlways1 W or less
16 (B+) ± BodyAlways9 ± 14 V
HINT:
If your display shows ºUNABLE TO CONNECT TO VEHICLEº
when you have connected the cable of OBD ll scan tool or TOY-
OTA hand±held tester to DLC3, turned the ignition switch ON
and operated the scan tool, there is a problem on the vehicle
side or tool side.
(1) If communication is normal when the tool is con-
nected to another vehicle, inspect DLC3 on the orig-
inal vehicle.
(2) If communication is still impossible when the tool is
connected to another vehicle, the problem is prob-
ably in the tool itself, so consult the Service Depart-
ment listed in the tool's instruction manual.

DI00G±07
ENGINE CONTROL SYSTEM Check Sheet
Customer's Name
Driver's Name
Data Vehicle
Brought in
License No.
Model and Model
Year
Frame No.
Engine Model
Odometer Reading
Problem Symptoms
Engine does
not Start
Difficult to
Start
Poor Idling
Poor
Driveability
Engine Stall
Others
Engine does not crankNo initial combustionNo complete combustion
Engine cranks slowly
Other
Incorrect first idleIdling rpm is abnormalHigh ( rpm)Low ( rpm)
Rough idling
Other
HesitationBack fireMuffler explosion (after±fire)Surging
Knocking
Other
Soon after startingAfter accelerator pedal depressed
After accelerator pedal released
During A/C operation
Shifting from N to D
Other
Datas Problem
Occurred
Problem Frequency
Condition When
Problem Occurs
Weather
Engine Operation
Engine Temperature Place Outdoor
TemperatureConstant
Sometimes ( times per day/month)Once only
Other
Fine
CloudyRainySnowyVarious/Other
Hot
Warm CoolCold (approx. °F/ °C)
Highway
SuburbsInner cityUphillDownhill
Rough road
Other
Cold
Warming upAfter warming upAny temperatureOther
Starting
Just after starting ( min.)IdlingRacing
Driving
Constant speedAccelerationDeceleration
A/C switch ON/OFF
Other
Condition of MILRemains on Sometimes lights up Does not light up
NormalMalfunction code(s) (code )
Freezed frame data ( )
NormalMalfunction code(s) (code )
Freezed frame data ( )
Normal Mode
(Precheck)
Check Mode DTC InspectionInspector's
Name
km
miles
DI±2
± DIAGNOSTICSENGINE
CUSTOMER PROBLEM ANALYSIS CHECK

DI64S±01
S05347
S05331
TOYOTA Hand±Held Tester
DLC3
± DIAGNOSTICSENGINE
DI±3
PRE±CHECK
1. DIAGNOSIS SYSTEM
(a) Description

When troubleshooting OBD II vehicles, the only dif-
ference from the usual troubleshooting procedure
is that you connect to the vehicle the OBD II scan
tool complying with SAE J1978 or TOYOTA hand±
held tester, and read off various data output from
the vehicle's ECM.

OBD II regulations require that the vehicle's on±
board computer lights up the Malfunction Indicator
Lamp (MIL) on the instrument panel when the com-
puter detects a malfunction in the emission control
system/components or in the power train control
components which affect vehicle emissions, or a
malfunction in the computer. In addition to the MIL
lighting up when a malfunction is detected, the ap-
plicable Diagnostic Trouble Code (DTC) prescribed
by SAE J2012 are recorded in the ECM memory.
(See page DI±14)
If the malfunction does not reoccur in 3 consecutive trips, the
MIL goes off automarially but the DTCs remain recorded in the
ECM memory.

To check the DTCs, connect the OBD II scan tool or
TOYOTA hand±held tester to the Data Link Con-
nector 3 (DLC3) on the vehicle. The OBD II scan
tool or TOYOTA hand±held tester also enables you
to erase the DTCs and check freezed frame data
and various forms of engine data (For operating
instructions, see the OBD II scan tool's instruction
book.)
DTCs include SAE controlled codes and manufac-
turer controlled codes. SAE controlled codes must
be set as prescribed by the SAE, while manufactur-
er controlled codes can be set freely by the
manufacturer within the prescribed limits. (See DTC
chart on page DI±14)