TOYOTA AVALON 2001 Service Repair Manual
Manufacturer: TOYOTA, Model Year: 2001, Model line: AVALON, Model: TOYOTA AVALON 2001Pages: 1897, PDF Size: 26.61 MB
Page 731 of 1897
DI6NV-03
F07884
A20
DI-262
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
418 Author: Date:
2001 AVALON (RM808U)
TERMINALS OF ECU
ABS & BA & TRAC & VSC ECU:
Symbols (Terminals No.)Wiring ColorConditionSTD Voltage (V)
IG1 (A20 - 1) - GND (A20 -
28, 29)Y-R e W-BIG switch ON10 - 14
R+ (A20 - 2) - SR (A20 - 36)GR-R e RIG switch ON, ABS warning light OFF10 - 14
R+ (A20 - 2) - MR (A20 - 7)GR-R e GR-LIG switch ONBelow 1.0
SFLR (A20 - 3) - GND (A20 -
28, 29)G-O e W-BIG switch ON, ABS warning light OFF10 - 14
SRRR (A20 - 4) - GND (A20 -
28, 29)G-R e W-BIG switch ON, ABS warning light OFF10 - 14
SFLH (A20 - 5) - GND (A20 -
28, 29)W-R e W-BIG switch ON, ABS warning light OFF10 - 14
SRRH (A20 - 6) - GND (A20 -
28, 29)GR e W-BIG switch ON, ABS warning light OFF10 - 14
FL+ (A20 - 8) - FL- (A20 - 10)BR e B-RIG switch ON, slowly turn left front wheelAC generation
RR+ (A20 - 11) - RR- (A20 -
12)G e YIG switch ON, slowly turn right rear wheelAC generation
RL+ (A20 - 13) - RL- (A20 -
14)LG e VIG switch ON, slowly turn left rear wheelAC generation
FR+ (A20 - 17) - FR- (A20 -
16)B-W e LIG switch ON, slowly turn right front wheelAC generation
GL1 (A20 - 18) - GND (A20 -
28, 29)G e W-BIG switch ON0.5 - 4.5
ML+ (A20 - 22) - ML- (A20 -
24)W-R e VIG switch ON10 - 14
SRLR (A20 - 25) - GND (A20 -
28, 29)L-Y e W-BIG switch ON, ABS warning light OFF10 - 14
SFRH (A20 - 26) - GND (A20
- 28, 29)B-W e W-BIG switch ON, ABS warning light OFF10 - 14
MT (A20 - 27) - GND (A20 -
28, 29)O e W-BIG switch ON, ABS warning light OFFBelow 1.5
IND (A20 - 31) - GND (A20 -VWBIG switch ON, SLIP indicator light ONBelow 2.0IND (A20 31) GND (A20
28, 29)V e W-BIG switch ON, SLIP indicator light OFF10 - 14
EBDW (A20 - 32) - GND (A20RYWBIG switch ON, BRAKE warning light OFFBelow 1.5EBDW (A20 32) GND (A20
- 28, 29)R-Y e W-BIG switch ON, BRAKE warning light ON10 - 14
LBL (A20 - 40) - GND (A20 -
28, 29)L-B e W-BIG switch ON, fluid level switch ONBelow 1.0
Page 732 of 1897
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
DI-263
419 Author: Date:
2001 AVALON (RM808U) Ts (A20 - 42) - GND (A20 - 28,
29)
LG-B e W-BIG switch ON10 - 14
CSW (A20 - 44) - GND (A20 -WLWBIG switch ON, VSC OFF indicator ONBelow 1.5CSW (A20 44) GND (A20
28, 29)W-L e W-BIG switch ON, VSC OFF indicator OFF8 - 14
D/G (A20 - 46) - GND (A20 -
28, 29)W e W-BIG switch ON10 - 14
STP (A20 - 48) - GND (A20 -GWWBStop light switch ON (Brake pedal pushed)8 - 14STP (A20 48) GND (A20
28, 29)G-W e W-BStop light switch OFF (Brake pedal released)Below 1.5
SMC1 (A20 - 49) - GND (A20
- 28, 29)G-Y e W-BIG switch ON, ABS warning light OFF10 - 14
SMC2 (A20 - 50) - GND (A20
- 28, 29)V-W e W-BIG switch ON, ABS warning light OFF10 - 14
BAT (A20 - 51) - GND (A20 -
28, 29)W-L e W-BIG switch OFF10 - 14
SRC2 (A20 - 52) - GND (A20 -
28, 29)R-B e W-BIG switch ON, ABS warning light OFF10 - 14
SRLH (A20 - 53) - GND (A20 -
28, 29)Y-B e W-BIG switch ON, ABS warning light OFF10 - 14
SRC1 (A20 - 54) - GND (A20 -
28, 29)B-Y e W-BIG switch ON, ABS warning light OFF10 - 14
SFRR (A20 - 55) - GND (A20
- 28, 29)W-G e W-BIG switch ON, ABS warning light OFF10 - 14
SS1 (A20 - 59) - GND (A20 -
28, 29)W e W-BIG switch ONPulse generation
FSS (A20 - 60) - GND (A20 -
28, 29)BR e W-BIG switch OFFContinuity
SS2 (A20 - 61) - GND (A20 -
28, 29)O e W-BIG switch ONPulse generation
VCM (A20 - 65) - GND (A20 -
28, 29)P-L e W-BIG switch ON4.5 - 5.5
PMC (A20 - 66) - GND (A20 -
28, 29)R-L e W-BIG switch ON, brake pedal released0.3 - 0.8
E2 (A20 - 67) - GND (A20 -
28, 29)BR-Y e W-BIG switch OFFContinuity
SP1 (A20 - 68) - GND (A20 -
28, 29)L-O e W-BVehicle driveing at about 20 km/h (12 mph)Pulse generation
WT (A20 - 69) - GND (A20 -YRWBIG switch ON, VSC OFF indicator light ONBelow 2.0WT (A20 69) GND (A20
28, 29)Y-R e W-BIG switch ON, VSC OFF indicator light OFF10 - 14
VSCW (A20 - 70) - GND (A20PBWBIG switch ON, VSC warning light ONBelow 2.0VSCW (A20 70) GND (A20
- 28, 29)P-B e W-BIG switch ON, VSC warning light OFF10 - 14
PKB (A20 - 74) - GND (A20 -YGWBIG switch ON, parking brake switch ONBelow 2.0PKB (A20 74) GND (A20
28, 29)Y-G e W-BIG switch ON, parking brake switch OFF10 - 14
YD (A20 - 75) - GND (A20 -
28, 29)BR e W-BIG switch ON, VSC warning light OFF4.5 - 5.5
GYAW (A20 - 76) - GND (A20
- 28, 29)Y e W-BIG switch OFFContinuity
YAW (A20 - 77) - GND (A20 -
28, 29)L e W-BIG switch ON, vehicle stationaly condition2 - 3
Page 733 of 1897
DI-264
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
420 Author: Date:
2001 AVALON (RM808U) WA (A20 - 81) - GND (A20 -
BWBIG switch ON, ABS warning light ON10 - 14WA (A20 81) GND (A20
28, 29)B e W-BIG switch ON, ABS warning light OFFBelow 2.0
Tc (A20 - 84) - GND (A20 - 28,
29)LG-R e W-BIG switch ON10 - 14
Bz (A20 - 86) - GND (A20 -LWWBIG switch ON, VSC buzzer soundsBelow 1.0 e10 - 14Bz (A20 86) GND (A20
28, 29)L-W e W-BIG switch ON, VSC buzzer does not sound10 - 14
Page 734 of 1897
F07885
1 2 3 4 5 6 7 8 9 10
11 12 13
14
21 22 23 24 25 26
15
16 17 18 19 20
T5
- DIAGNOSTICSABS WITH EBD & BA & TRAC & VSC SYSTEM
DI-265
421 Author: Date:
2001 AVALON (RM808U)
Translate ECU:
Symbols (Terminals No.)Wiring ColorConditionSTD Voltage (V)
IG1(T5 - 1) - GND (T5 - 14)Y-R e W-BIG switch ON10 - 14
PKB2 (T5 - 2) - GND (T5 -YGWBIG switch ON, paking brake switch ONBelow 2.0PKB2 (T5 2) GND (T5
14)Y-G e W-BIG switch ON, paking brake switch OFF10 - 14
VSC+ (T5 - 4) - VSC- (T5 -
17)W e OEngine idlingPulse generation
SS1 (T5 - 5) - SS2 (T5 - 18)L e B-WEngine idlingPulse generation
RSS (T5 - 6) - GND (T5 - 14)BR e W-BIG switch OFFContinuity
P (T5 10) GND (T5 14)GWWBIG switch ON, shift lever is in P range8 - 14P (T5 - 10) - GND (T5 - 14)G-W e W-BIG switch ON, shift lever is in other than P rangeBelow 1.5
LVL2 (T5 - 11) - GND (T5 - 14)R-W e W-BIG switch ON, fluid level switch ONBelow 1.5
D (T5 12) GND (T5 14)YRWBIG switch ON, shift lever is in D range8 - 14D (T5 - 12) - GND (T5 - 14)Y-R e W-BIG switch ON, shift lever is in other than D rangeBelow 1.5
NEO (T5 - 13) - GND (T5 - 14)Y-B e W-BEngine idlingPulse generation
PKB (T5 - 15) - GND (T5 - 14)Y-G e W-BIG switch OFF, parking brake switch ONBelow 2.0
BRL (T5 16) GND (T5 14)RWWBIG switch ON, BRAKE warning light ONBelow 2.0BRL (T5 - 16) - GND (T5 - 14)R-W e W-BIG switch ON, BRAKE warning light OFF10 - 14
TRC+ (T5 - 20) - TRC- (T5 -
7)BR e W-BEngine idlingPulse generation
Tc (T5 - 21) - GND (T5 - 14)LG-R e W-BIG switch ON10 - 14
ENG+ (T5 - 22) - ENG- (T5 -
9)V e GREngine idlingPulse generation
Ts (T5 - 24) - GND (T5 - 14)LG-B e W-BIG switch ON10 - 14
LBL (T5 - 25) - GND (T5 - 14)L-B e W-BIG switch ON, fluid level switch ONBelow 1.0
CCS (T5 - 26) - GND (T5 - 14)Y-R e W-BIG switch ONBelow 2.0
Page 735 of 1897
D07905
C15 E7 Cruise Control ECU
14
ODGR24
OD1ECM
- DIAGNOSTICSAUTOMATIC TRANSAXLE
DI-203
359 Author: Date:
2001 AVALON (RM808U)
O/D Cancel Signal Circuit
CIRCUIT DESCRIPTION
While driving uphill with cruise control activated, in order to minimize gear shifting and provide smooth cruis-
ing overdrive may be prohibited temporarily under some condition.
The cruise control ECU sends O/D cut signals to the ECM as necessary and the ECM cancels overdrive
shifting until these signals are discontinued.
WIRING DIAGRAM
DI02S-08
Page 736 of 1897
BE3840D00835D07206
ON
(-) (+)
OD1
AB0119
N19917
I00742
ON
O/D
(-)
(+)
DI-204
- DIAGNOSTICSAUTOMATIC TRANSAXLE
360 Author: Date:
2001 AVALON (RM808U)
INSPECTION PROCEDURE
1 Check voltage between terminal OD1 of ECM and body ground.
PREPARATION:
(a) Remove the glove compartment.
(b) Turn the ignition switch ON.
CHECK:
Measure voltage between terminal OD1 of ECM and body
ground.
OK:
Voltage: 10 - 14 V
OK Proceed to next circuit inspection shown on
problem symptoms table (See page DI-175).
NG
2 Check voltage between terminal OD of cruise control ECU harness side connec-
tor and body ground.
PREPARATION:
(a) Disconnect the cruise control ECU connector.
(b) Turn the ignition switch ON.
CHECK:
Measure voltage between terminal OD of cruise control ECU
harness side connector and body ground.
OK:
Voltage: 10 - 14 V
OK Check and replace the cruise control ECU
(See page IN-30).
NG
Page 737 of 1897
- DIAGNOSTICSAUTOMATIC TRANSAXLE
DI-205
361 Author: Date:
2001 AVALON (RM808U)
3 Check harness and connector between cruise control ECU and ECM
(See page IN-30).
NG Repair or replace the harness or connector.
OK
Check and replace the ECM
(See page IN-30).
Page 738 of 1897
D07910
C9
O/D OFF
Indicator Light
15
7
G-O163G 3AG-O9
E8ECM
ODLP
2
3F Y-G2
3CY-R13
1B
ECU-IG
No. 2211
1GW
W-B3
1B
4
IG1 RELAY34
1CW-R
I15 Ignition Switch
24
AM1 IG1 W-L 7
IF1 W-L
5 2 AM1
1
5 B
1
2H
12G
B-L
1
F8 F101
ALTF6BFL MAINBattery
IJ W-B 7
7
4A
W-B
O34
*12*1
O3
3
*2G-O
12
E6ODMS
*1: Floor Shift*2: Column Shift1
*2 16
W
O/D Main
Switch IG
Driver Side J/B
Engine Room R/B No. 5
Engine
Room
J/B
A 8
II2
G-O
J9 J/ C 4BJ/B No. 4 J/B No. 3
1 DI-206
- DIAGNOSTICSAUTOMATIC TRANSAXLE
362 Author: Date:
2001 AVALON (RM808U)
O/D Main Switch & O/D OFF Indictor Light Circuit
CIRCUIT DESCRIPTION
The O/D main switch is a momentary type switch. When pressing the O/D OFF main switch, the O/D OFF
indicator light lights up and ECM prohibits shifting to O/D, and when pressing it again, the O/D OFF indicator
light goes off and ECM allows shifting to O/D. Turning the IG switch OFF will reset the O/D OFF indicator
light.
WIRING DIAGRAM
DI1KD-08
Page 739 of 1897
- DIAGNOSTICSAUTOMATIC TRANSAXLE
DI-207
363 Author: Date:
2001 AVALON (RM808U)
INSPECTION PROCEDURE
1 Check operation of O/D main switch.
PREPARATION:
Turn the ignition switch ON.
CHECK:
(a) Check O/D OFF indicator light when O/D main switch is
pushed in to ON.
(b) Check O/D OFF indicator light when O/D main switch is
pushed again.
OK:
(a) O/D OFF indicator light lights up.
(b) O/D OFF indicator light goes off.
OK Proceed to next inspection shown on symp-
toms problem tables (See page DI-175).
NG
2 Check and replace the combination meter (See page BE-2).
NG Replace the combination meter.
OK
Page 740 of 1897
Q07595
2
4
D06554
ON
ODMS
DI-208
- DIAGNOSTICSAUTOMATIC TRANSAXLE
364 Author: Date:
2001 AVALON (RM808U)
3 Check O/D main switch.
PREPARATION:
Disconnect the O/D main switch connector.
CHECK:
(a) Floor shift:
Check continuity between terminals 2 and 4 of O/D main
switch connector.
(b) Column shift:
Check continuity between terminals 1 and 3 of O/D main
switch connector.
OK:
O/D main switch conditionSpecified condition
Press continuously O/D main switchContinuously
Release O/D main switchNo continuously
NG Replace and repair O/D main switch.
OK
4 Check voltage between terminal ODMS of ECM and body ground.
PREPARATION:
Turn the ignition switch ON.
CHECK:
Check voltage between terminal ODMS of ECM and body
ground when O/D main switch is ON and OFF.
OK:
O/D main switch conditionSpecified condition
Press continuously O/D main switchBelow 1.0 V
Release O/D main switch10 - 14 V
OK Check and replace the ECM (See page IN-30).
NG