Page 885 of 1897
DI08J-10
I12541
Cruise Control
Actuator
ECM
Cruise Control Switch
Ignition Switch
Instrument Panel
Junction Block
ECU-IG No. 1 Fuse
ECU-IG No. 2 Fuse
STOP Fuse
Vehicle Speed Sensor
Park/Neutral Position Switch
Cruise Control ECU
- DIAGNOSTICSCRUISE CONTROL SYSTEM
DI-557
713 Author: Date:
2001 AVALON (RM808U)
PARTS LOCATION
Page 886 of 1897
I11635
DI6L5-01
BE4034
Indicator Light
1.5 sec.0.5 sec.
ON
OFF
I00169
DLC2
Tc E 1
- DIAGNOSTICSCRUISE CONTROL SYSTEM
DI-551
707 Author: Date:
2001 AVALON (RM808U)
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-43) 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.
Page 887 of 1897
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
F07887
Hand-held
Tester
DLC3
I00169I13679I14212
(d)
DLC2
TcE1
(c)
I13679
DI-552
- DIAGNOSTICSCRUISE CONTROL SYSTEM
708 Author: Date:
2001 AVALON (RM808U)
HINT:
If the DTC is not output, inspect the diagnosis circuit (See
page DI-594).
As an example, the blinking patterns for codes; normal,
11 and 21 are shown in the illustration.
2. USING HAND-HELD TESTER
(a) Hook up the hand-held tester to the DLC3.
(b) Monitor the ECU data by following the prompts on the tes-
ter screen.
HINT:
Hand-held tester has a ºSnapshotº function which records the
monitored data.
Please refer to the hand-held tester operator's manual for fur-
ther details.
3. DTC CLEARANCE (ERASE MODE)
HINT:
During in the erase mode, diag detection does not work.
(a) Drive at about 15 km/h or below.
(b) Using SST, connect terminals Tc and E1 of DLC2.
SST 09843-18020
(c) Push 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.
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.
Page 888 of 1897
I13679
I13679
- DIAGNOSTICSCRUISE CONTROL SYSTEM
DI-553
709 Author: Date:
2001 AVALON (RM808U)
(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 pushed to RES/ACC, and that the
vehicle cruises at the set speed when the switch is
released.
(4) Momentarily raise the control switch push 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 push 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).
Page 889 of 1897
I13679
I13679
DI-554
- DIAGNOSTICSCRUISE CONTROL SYSTEM
710 Author: Date:
2001 AVALON (RM808U)
(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
Shift to except D position
Push the main switch OFF
Push 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
Shift to except D position
Push the main switch OFF
Push the cruise control switch to CANCEL
(4) After the control switch is pushed 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 cancellation.
Page 890 of 1897
I13679
(a)
(a)(b)
No.Operation MethodCRUISE MAIN Indicator Light
Blinking PatternDiagnosis
1 Push SET/COAST switch ON
2Push RES/ACC switch ON
3Push 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
- DIAGNOSTICSCRUISE CONTROL SYSTEM
DI-555
711 Author: Date:
2001 AVALON (RM808U)
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) Push the control switch to SET/COAST or RES/ACC posi-
tion and hold it down or up.
(b) Push the main switch ON.
(c) Check that the CRUISE MAIN indicator light blinks twice
or 3 times repeatedly after 3 seconds.
(d) Push 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 1st.
Page 891 of 1897
DI08L-15
DI-560
- DIAGNOSTICSCRUISE CONTROL SYSTEM
716 Author: Date:
2001 AVALON (RM808U)
PROBLEM SYMPTOMS TABLE
SymptomSuspect AreaSuspect AreaSee page
SET not occourring or CANCEL occurring.
(DTC is Normal)
1. Vehicle Speed Sensor
2. Control Switch Circuit (Cruise control switch)
3. Stop Light Switch Circuit
4. Park/Neutral Position Switch Circuit
5. Actuator Motor Circuit
6. Cruise Control Cable
7. Cruise Control ECUDI-568
DI-572
DI-578
DI-584
DI-561
DI-596
IN-30
SET not occurring or CANCEL occurring.
(DTC dose not output)1. ECU Power Source Circuit
2. Cruise Control ECUDI-587
IN-30
Actual vehicle speed deviates above or below the set speed.
1. Cruise Control Cable
2. Vehicle Speed Signal Abnormal
3. Electronically Controlled Transmission
Communication Circuit
4. Actuator Motor Circuit
5. Idle Signal Circuit (Main throttle position sensor)
6. Cruise Control ECUDI-596
DI-568
DI-581
DI-581
DI-561
DI-575
IN-30
Gear shifting frequent between 3rd O/D when driving on uphill
road. (Hurting)1. Electronically Controlled Transmission
Communication Circuit
2. Cruise Control ECUDI-581
DI-581
IN-30
Cruise control not cancelled, even when brake pedal is de-
pressed.
1. Cruise Control Cable
2. Stop Light Switch Circuit
3. Actuator Motor Circuit
4. Cruise Control ECUDI-596
DI-578
DI-561
IN-30
Cruise control not cancelled, even when transmission is shifted to
ºNº postion.
1. Cruise Control Cable
2. Park/Neutral Position Switch Circuit
3. Actuator Motor Circuit
4. Cruise Control ECUDI-596
DI-584
DI-561
IN-30
Control switch does not operate.
(SET/COAST, ACC/RES, CANCEL not possible)
1. Cruise Control Cable
2. Control Switch Circuit
3. Actuator Motor Circuit
4. Cruise Control ECUDI-596
DI-572
DI-561
IN-30
SET possible at 40 km/h (25 mph) or less, or CANCEL does not
operate at 40 km/h (25 mph) or less.
1. Cruise Control Cable
2. Vehicle Speed Signal Abnormal
3. Actuator Motor Circuit
4. Cruise Control ECUDI-596
DI-568
DI-561
IN-30
Poor response is in ACCEL and RESUME modes.
1. Cruise Control Cable
2. Electronically Controlled Transmission
Communication Circuit
3. Actuator Motor Circuit
4. Cruise Control ECUDI-596
DI-581
DI-581
DI-561
IN-30
O/D does not resume, even though the road is not uphill.
1. Electronically Controlled Transmission
Communication Circuit
2. Cruise Control ECUDI-581
DI-581
IN-30
DTC memory is erased.1. Cruise Control ECUIN-30
DTC is not output, or is output when should not be.1. Diagnosis Circuit
2. Cruise Control ECUDI-594
IN-30
Cruise MAIN indicator light remains ON or falls to light up.1. Cruise MAIN Indicator Light Switch CircuitDI-592
Page 892 of 1897
DI1KT-08
I00293
C15
DI-558
- DIAGNOSTICSCRUISE CONTROL SYSTEM
714 Author: Date:
2001 AVALON (RM808U)
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
D e GND YRWBShift to positions except DBelow 1 VD e GND
(C15-3 e C15-16)Y-R e W-BShift to D position10 - 16 V
PI e GND GR RWB
Ignition switch ON
Cruise control main switch ONBelow 1.2 VPI e GND
(C15-4 e C15-16)GR-R 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 GYWB
During driving
Gear position 3rd10 - 16 VECT e GND
(C15-6 e C15-16)G-Y e W-BDuring driving
Gear position O/DBelow 1 V
MC e GND RWB
During cruise control driving
COAST switch held ON9 - 15 VMC e GND
(C15-7 e C15-16)R 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)Y-R e W-BIgnition switch ON10 - 16 V
Ignition switch ON10 - 16 V
CCSGND
Ignition switch ON
MAIN switch held ONBelow 1 V
CCS e GND
(C15-10 e C15-16)W e W-BIgnition switch ON
SET/COAST switch held ON4.7 - 7.7 V
Ignition switch ON
RES/ACC switch held ON2.6 - 4.2 V
