TOYOTA CAMRY 1999 Service Repair Manual

DI08G±08
CRUISE CONTROL SYSTEM Check Sheet
Inspector 's name:
Customer 's Name
Date VehicleRegistration No.
Registration Year
Frame No.
Odometer Reading / /km
Mile
Condition of
Problem Occurrence
Date of Problem
How Often does
Occurrence
Problem Occurs
Vehicle Speed when
Problem Occurred / /
Continuous Intermittent ( Times a day)
km
Mile Brought in
Auto cancel
occurs
Driving condition
 City driving  Freeway  Up hill  Down hill

After cancel occurred, did the driver activate cruise control
again?
 Yes  No
 Cancel does not
occur With brake ON
 Except D position shift  At 40 km/h (25 mph) or less
 When control SW turns to CANCEL position
 Cruise control
malfunction Slip to acceleration side
 Slip to deceleration side
 Hunting occurs
 O/D cut off does not occur
 O/D does not return
 Switch
malfunction SET  ACCEL  COAST  RESUME  CANCEL

 Remains ON  Does not light up  Blinking Symptoms
DTC Check1st Time2nd Time
 Normal Code  Malfunction Code (Code )
 Normal Code  Malfunction Code (Code )
± DIAGNOSTICSCRUISE CONTROL SYSTEM
DI±869
1104 Author: Date:
CUSTOMER PROBLEM ANALYSIS CHECK

I00279CRUISE MAIN Indicator Light
DI1KS±03
BE4034
Indicator light
1.5 sec.0.5 sec.
ON
OFF
I00169
DLC2
Tc E 1
DI±870
± DIAGNOSTICSCRUISE CONTROL SYSTEM
1105 Author: Date:
PRE±CHECK
1. DIAGNOSIS SYSTEM
(a) Check the indicator.
(1) Turn the ignition switch ON.
(2) Check that the CRUISE MAIN indicator light comes
ON when the cruise control main switch is turned
ON, and that the indicator light goes OFF when the
main switch is turned OFF.
HINT:
If the indicator check result is not normal, proceed to trouble-
shooting (See page BE±2) for the combination meter section.
(b) Check the DTC.
HINT:
If a malfunction occurs in the No. 1 vehicle speed sensor or ac-
tuator, etc. during cruise control driving, the ECU actuates
AUTO CANCEL of the cruise control and turns on and off the
CRUISE MAIN indicator light to inform the driver of a malfunc-
tion. At the same time, the malfunction is stored in memory as
a DTC.
(c) Output of DTC using diagnosis check wire.
(1) Turn the ignition switch ON.
(2) Using SST, connect terminals Tc and E
1 of DLC2.
SST 09843±18020
(3) Read the DTC on the CRUISE MAIN indicator light.

BE4032
BE4033I00021
Normal code
0.25 sec.
0.25 sec.
ON
OFF
ON
OFF
4 sec.1.5 sec. 0.5 sec.
2.5 sec.0.5 sec.1.5 sec.
Malfunction codes 11 and 21
Code 11 Code 21
H07517
I08438
DLC1
TC
E1(b) (d) 5 times
within 3 seconds
(c)
± DIAGNOSTICSCRUISE CONTROL SYSTEM
DI±871
1106 Author: Date:
HINT:
If the DTC is not output, inspect the diagnosis circuit (See page
DI±916).
As an example, the blinking patterns for codes; normal, 11 and
21 are shown in the illustration.
2. USING TOYOTA HAND±HELD TESTER
(a) Hook up the TOYOTA hand±held tester to the DLC2.
(b) Monitor the ECU data by following the prompts on the tes-
ter screen.
HINT:
TOYOTA hand±held tester has a ºSnapshotº function which re-
cords the monitored data.
Please refer to the TOYOTA hand±held tester operator's manu-
al for further details.
3. DTC CLEARANCE (ERASE MODE)
HINT:
During in the erase mode, diag detection does not work.
(a) Stop the vehicle.
(b) Using SST, connect terminals Tc and E
1 of DLC1.
SST 09843±18020
(c) Pull the cruise control switch to CANCEL.
(d) On the above metioned condition, turn on the cruise con-
trol main switch 5 times within 3 seconds.

N17520
N17520
N17520
DI±872
± DIAGNOSTICSCRUISE CONTROL SYSTEM
1107 Author: Date:
4. PROBLEM SYMPTOM CHECK
(ROAD TEST)
(a) Inspect the SET switch.
(1) Push the main switch ON.
(2) Drive at a desired speed (40 km/h (25 mph) or high-
er).
(3) Press the control switch to the SET/COAST.
(4) After releasing the switch, check that the vehicle
cruises at the desired speed.
(b) Inspect the ACCEL switch.
(1) Push the main switch ON.
(2) Drive at a desired speed (40 km/h (25 mph) or high-
er).
(3) Check that the vehicle speed increases while the
control switch is turned to RES/ACC, and that the
vehicle cruises at the set speed when the switch is
released.
(4) Momentarily raise the control switch upward to the
RES/ACC position and then immediately release it.
Check that the vehicle speed increases by approx.
1.5 km/h (Tap±up function).
(c) Inspect the COAST switch.
(1) Push the main switch ON.
(2) Drive at a desired speed (40 km/h (25 mph) or high-
er).
(3) Check that the vehicle speed decreases while the
control switch is turned to SET/COAST, and the ve-
hicle cruises at the set speed when the switch is re-
leased.
(4) Momentarily pull the control switch down to SET/
COAST, and then immediately release it. Check
that the vehicle speed decreases by about 1.5 km/h
(Tap±down function).

N17520
N17520
± DIAGNOSTICSCRUISE CONTROL SYSTEM
DI±873
1108 Author: Date:
(d) Inspect the CANCEL switch.
(1) Push the main switch ON.
(2) Drive at a desired speed (40 km/h (25 mph) or high-
er).
(3) When operating one of the following operations,
check that the cruise control system is cancelled
and that the normal driving mode is reset.

Depress the brake pedal

Depress the clutch pedal (M/T)

Shift to except D position (A/T)

Push the main switch OFF

Pull the cruise control switch to CANCEL
(e) Inspect the RESUME switch.
(1) Push the main switch ON.
(2) Drive at a desired speed (40 km/h (25 mph) or high-
er).
(3) When operating one of the following operations
check that the cruise control system is cancelled
and that the normal driving mode is reset.

Depress the brake pedal

Depress the clutch pedal (M/T)

Shift to except D position (A/T)

Push the main switch OFF

Pull the cruise control switch to CANCEL
(4) After the control switch is turned to RES/ACC at the
driving speed of more than 40 km/h (25 mph), check
that the vehicle restores the speed prior to the can-
cellation.

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.

DI08I±08
± DIAGNOSTICSCRUISE CONTROL SYSTEM
DI±875
111 0 Author: Date:
DIAGNOSTIC TROUBLE CODE CHART
If a malfunction code is displayed during the DTC check, check the circuit listed for that code in the table
below and proceed to the appropriate page.
DTC No.
(See Page)Circuit InspectionTrouble Area
11, 15
(DI±881)Actuator Motor Circuit

Actuator motor

Harness or connector between cruise control ECU and
actuator motor

Cruise control ECU
12
(DI±883)Actuator Magnetic Clutch Circuit

STOP Fuse

Stop light switch

Actuator magnetic clutch

Harness or connector between cruise control ECU and
actuator magnetic clutch, actuator magnetic clutch and body
ground

Cruise control ECU
14
(DI±886)Actuator Mechanical Malfunction
Actuator motor (actuator lock: motor, arm)

Cruise control ECU
21
(DI±888)Open in Vehicle Speed Sensor Circuit

Combination meter

Harness or connector between cruise control ECU and com-
bination meter, combination meter and vehicle speed sensor

Vehicle speed sensor

Cruise control ECU
23
(DI±891)Vehicle Speed Signal Abnormal
Vehicle speed sensor

Cruise control ECU
32
(DI±892)Control Switch Circuit

Cruise control switch

Harness or connector between cruise control ECU and cruise
control switch, cruise control switch and body ground

Cruise control ECU
41Cruise control ECU
Cruise control ECU
42Source voltage drop
Power source
51
(DI±895)Idle Signal Circuit

Throttle position sensor

Harness or connector between ECM and throttle position
sensor

Harness or connector between cruise control ECU and ECM

Cruise control ECU

DI08J±08
I08439
Stop Light SwitchCruise Control Actuator
 Actuator Motor
 Actuator Magnetic Clutch
Cruise Control ECUCruise Control switch
Main Switch
Control Switch
DLC2 Instrument Panel Junction Block No.1
 ECU±IG Fuse
 STOP Fuse
5S±FE engine: 1MZ±FE engine:
Vehicle Speed Sensor
Park/Neutral Position Switch Park/Neutral Position SwitchVehicle Speed Sensor
DI±876
± DIAGNOSTICSCRUISE CONTROL SYSTEM
1111 Author: Date:
PARTS LOCATION

DI1KT±06
I00293
C15
± DIAGNOSTICSCRUISE CONTROL SYSTEM
DI±877
111 2 Author: Date:
TERMINALS OF ECU
Symbols (Terminals No.)Wiring ColorConditionSTD Voltage (V)
STP± e GND GWWBDepress brake pedal10 ± 16 VSTP e GND
(C15±2 e C15±16)G±W e W±BRelease brake pedalBelow 1 V
DGND (C15 3C15 16)BRWBShift to positions except DBelow 1 VD e GND (C15±3 e C15±16)B±R e W±BShift to D position10 ± 16 V
PIGND (C15 4C15 16)OWB
Ignition switch ON
Cruise control main switch ONBelow 1.2 V
PI e GND (C15±4 e C15±16)O e W±BIgnition switch ON
Cruise control main switch OFF10 ± 16 V
TCGNDIgnition switch ON10 ± 16 VTC e GND
(C15±5 e C15±16)LG±R e W±BIgnition switch ON
Connect terminals Tc and E1 of diagnostic check connectorBelow 1 V
ECT e GND LBWB
During driving
Gear position 3rd10 ± 16 VECT e GND
(C15±6 e C15±16)L±B e W±BDuring driving
Gear position O/DBelow 1 V
MC e GND RBWB
During cruise control driving
COAST switch held ON9 ± 15 VMC e GND
(C15±7 e C15±16)R±B e W±BDuring cruise control driving
ACC switch held ONBelow 1 V
L e GND GBWBDuring cruise control driving9 ± 15 VL e GND
(C15±8 e C15±16)G±B e W±BExcept during cruise control drivingBelow 1 V
B e GND
(C15±9 e C15±16)B±R e W±BIgnition switch ON10 ± 16 V
Ignition switch ON10 ± 16 V
CCSGND
Ignition switch ON
CANCEL switch held ON4.2 ± 8.8 V
CCS e GND
(C15±10 e C15±16)W e W±BIgnition switch ON
SET/COAST switch held ON2.5 ± 6.3 V
Ignition switch ON
RES/ACC switch held ON0.8 ± 3.7 V

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