2001 TOYOTA AVALON ESP
[x] Cancel search: ESPPage 636 of 1897
DI6NB-01
DI-218- DIAGNOSTICSANTI-LOCK BRAKE SYSTEM WITH ELECTRONIC
BRAKE FORCE DISTRIBUTION (EBD)
374 Author: Date:
2001 AVALON (RM808U)
PROBLEM SYMPTOMS TABLE
If a normal code is displayed during DTC check but a problem still occurs, check the circuits corresponding
to each problem symptom in the order given in the table below and proceed to the relevant troubleshooting
page.
NOTICE:
When replacing ABS ECU, sensor or etc., turn the IG switch OFF.
SymptomSuspect AreaSee page
ABS does not operate
Only when 1. - 4. are all normal and the problem is still
occurring, replace the ABS ECU.
5. Check the DTC reconfirming that the normal code is
output.
6. Power source circuit
7. Speed sensor circuit
8. Check the hydraulic circuit for leakage.
DI-212
DI-231
DI-225
DI-249
ABS does not operate intermittently
Only when 1. - 4. are all normal and the problem is still
occurring, replace the ABS ECU.
1. Check the DTC reconfirming that the normal code is
output.
2. Speed sensor circuit
3. Stop light switch circuit
4. Check the hydraulic circuit for leakage.
DI-212
DI-225
DI-234
DI-249
ABS warning light abnormal1. ABS warning light circuit
2. ABS ECUDI-243
BRAKE warning light abnormal1. BRAKE warning light circuit
2. ABS ECUDI-240
DTC check cannot be done
Only when 1. and 2. are all normal and the problem is still
occurring, replace the ABS ECU.
1. ABS warning light circuit
2. Tc terminal circuit
DI-243
DI-245
Speed sensor signal check cannot be done1. Ts terminal circuit
2. ABS ECUDI-247
Page 662 of 1897
DI-280
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
436 Author: Date:
2001 AVALON (RM808U)
DTC C0278 / 11 ABS Solenoid Relay Circuit
CIRCUIT DESCRIPTION
This relay supplies power to each ABS solenoid. After the ignition switch is turned ON, if the initial check is
OK, the relay goes on.
DTC No.DTC Detecting ConditionTrouble Area
C0278 / 11
Detection of any conditions from 1. through 2.:
1. 3 or more solenoids are show faulty in response and
simultaneously solenoid supply voltage is detected
faulty.
2. Solenoid relay will not be switched OFF.
ABS solenoid relay
ABS solenoid relay circuit
DI6O0-03
Page 719 of 1897
DI6NT-03
DI-258
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
414 Author: Date:
2001 AVALON (RM808U)
DIAGNOSTIC TROUBLE CODE CHART
NOTICE:
When removing the part, turn the ignition switch OFF.
When replacing the steering angle sensor or ECU, make sure to perform steering angle sensor
zero point calibration.
HINT:
Using SST 09843-18020, connect the terminals Tc and E1.
If any abnormality is not found when inspecting parts, inspect the ECU.
If a malfunction code is displayed during the DTC check, check the circuit corresponding the code. For
details of each code, refer to the page under respective ºDTC No.º in the DTC chart.
DTC chart of ABS system:
DTC No.
(See Page)Detection ItemTrouble Area
C0278 / 11
(DI-280)Open or short circuit in ABS solenoid relay circuitABS solenoid relay
ABS solenoid relay circuit
C0273 / 13
(DI-276)Open or short circuit in ABS motor relay circuitABS motor relay
ABS motor relay circuit
C0226 / 21
(DI-273)Open or short circuit in brake actuatorBrake actuator
SFRR or SFRH circuit
C0236 / 22
(DI-273)Open or short circuit in brake actuatorBrake actuator
SFLR or SFLH circuit
C0246 / 23
(DI-273)Open or short circuit in brake actuatorBrake actuator
SRRR or SRRH circuit
C0256 / 24
(DI-273)Open or short circuit in brake actuatorBrake actuator
SRLR or SRLH circuit
C0200 / 31*
(DI-267)Right front wheel speed sensor signal malfunction
C0205 / 32*
(DI-267)Left front wheel speed sensor signal malfunctionRight front, left front, right rear and left rear speed sensor
Eh d i itC0210 / 33*
(DI-267)Right rear wheel speed sensor signal malfunction
Each speed sensor circuit
Speed sensor rotor
C0215 / 34*
(DI-267)Left rear wheel speed sensor signal malfunction
C1330 / 35*
(DI-267)Open circuit in right front speed sensor circuitRight front speed sensor
Right front speed sensor circuit
C1331 / 36*
(DI-267)Open circuit in left front speed sensor circuitLeft front speed sensor
Left front speed sensor circuit
C1237 / 37
(DI-295)Front tires are different from rear in size.Tire size
Speed sensor rotor
C1332 / 38*
(DI-267)Open circuit in right rear speed sensor circuitRight rear speed sensor
Right rear speed sensor circuit
C1333 / 39*
(DI-267)Open circuit in left rear speed sensor circuitLeft rear speed sensor
Left rear speed sensor circuit
C1241 / 41
(DI-297)Low battery positive voltage or abnormally high battery positive
voltageBattery
Charging system
Power source circuit
C1249 / 58
(DI-303)Open circuit in stop light switch circuitStop light switch
Stop light switch circuit
Page 722 of 1897
DI6NQ-01
Vehicle Brought to Workshop
Customer Problem Analysis
P. DI-251
Check and Clear DTC (Precheck)
P. DI-252Items inside
are titles of pages in this manual,
with the page number in the bottom portion. See
the pages for detailed explanations.
Problem Symptom ConfirmationSymptom Simulation
P. IN-20
Symptom
does not occur
Symptom
occurs
DTC Check
P. DI-252
Sensor CheckCircuit Inspection
P. DI-267 - DI-344
DTC Chart
P. DI-258 Malfunction codeProblem Symptoms Table
P. DI-266
Check for Fluid Leakage
P. DI-346
Identification of Problem
Normal code
Repair
Confirmation Test
End
1
2
3
4
5
67
89
10
11
Fail safe function:
When a failure occurs in the ABS & BA & TRAC & VSC system, the respective warning light (ABS, VSC) is lit and
the operation of ABS & BA & TRAC & VSC is prohibited. In addition to this, when the failure which disables the EBD
operation occurs, the brake warning light is lit as well and the EBD operation is prohibited.Step 2, 5, 8, 9, 11:Diagnostic steps permitting the use of the
TOYOTA hand-held tester or TOYOTA
break-out-box. DI-250
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
406 Author: Date:
2001 AVALON (RM808U)
ABS WITH EBD & BA & TRAC & VSC SYSTEM
HOW TO PROCEED WITH TROUBLESHOOTING
Troubleshoot in accordance with the procedure on the following pages.
Page 757 of 1897
Q04869
NC2 Revolution Sensor
D07907
E4
E4 1O1 2
G R
Direct Clutch
Speed Sensor24
NC2+
ECM
NC2
-
23
- DIAGNOSTICSAUTOMATIC TRANSAXLE
DI-193
349 Author: Date:
2001 AVALON (RM808U)
DTC P1705 NC2 Revolution Sensor Circuit Malfunction
(Direct Clutch Speed Sensor)
CIRCUIT DESCRIPTION
This sensor detects the rotation speed of the direct clutch drum.
By comparing the direct clutch speed signal with the vehicle
speed sensor signal, the ECM detects the shift timing of the
gears and appropriately controls the engine torque and hydrau-
lic pressure in response to various conditions, thus performing
smooth gear shifting.
DTC No.DTC Detecting ConditionTrouble Area
P1705
The ECM detects conditions (a), (b), (c), (d), (e) and (f) conti-
nuity for 4 secs. or more.
(2-trip detection logic)
(a) Gear change not being performed
(b) Gear position: 1st, 2nd 3rd or O/D
(c) T/M input shaft rpm: 300 rpm or less
(d) T/M output shaft rpm: 1,000 rpm or more
(e) Park/neutral position switch: OFF
(f) Shift solenoid valves No. 1, No. 2, SL and vehicle speed
sensor are in normal operation.
Open or short in direct clutch speed sensor circuit
Direct clutch speed sensor
ECM
WIRING DIAGRAM
DI02P-07
Page 782 of 1897
Q00224
- DIAGNOSTICSAUTOMATIC TRANSAXLE
DI-171
327 Author: Date:
2001 AVALON (RM808U)
8. MANUAL SHIFTING TEST
HINT:
With this test, it can be determined whether the trouble is within
the electrical circuit or is a mechanical problem in the transaxle.
(a) Disconnect the solenoid wire.
(b) Inspect the manual driving operation.
Check that the shift and gear positions correspond with
the table below.
While driving, shift through the L, 2 and D positions.
Check that the gear change corresponds to the shift posi-
tion.
Shift PositionGear Position
DO/D
2O/D
L1st
RReverse
PPawl Lock
HINT:
If the L, 2 and D position gear positions are difficult to positions
are difficult to distinguish, do the above read test.
If any abnormality is found in the above test, the problem is in
the transaxle itself.
(c) Connect the solenoid wire.
(d) Cancel out the DTC (See page DI-160).
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 904 of 1897
A06092
1
3
5
24
6 IACV No.2IACV No.1, No.2 closed (VSV: OFF)
Throttle Valve30°
3,700 rpm
Engine Speed
Throttle Valve
Opening Angle
FI7011 FI6570
IACV No.1
2,700 rpmIACV No.1 open (VSV: ON)
IACV No.2 closed (VSV: OFF)
IACV No.1, No.2 open (VSV: ON)
A11667
From BatteryEngine Room J/B
2B 2G
2F
2B
2
4
1 EFI
No.1EFI Relay
W-B
B-W 9
E01ACISE4 R-Y
2 VSV for ACIS No.1
ED17
L-O B
4 EFI
No.21
2
From
Terminal
MREL of
ECME01
ACI1E5 15
B-W B-WECM
VSV for ACIS No.2W-R 1 2
53
- DIAGNOSTICSENGINE
DI-145
301 Author: Date:
2001 AVALON (RM808U)
IACV Control Circuit
CIRCUIT DESCRIPTION
This circuit opens and closes the IACV (Intake Air Control Valve) in response to the engine load in order to
increase the intake efficiency (ACIS: Acoustic Control Induction System).
When the engine speed is 3,700 rpm or less and the throttle valve opening angle is 30° or more, the ECM
turns the two VSV ON or OFF and operate the IACV.
WIRING DIAGRAM
DI08E-09