engine TOYOTA AVALON 2001 Service Repair Manual
[x] Cancel search | Manufacturer: TOYOTA, Model Year: 2001, Model line: AVALON, Model: TOYOTA AVALON 2001Pages: 1897, PDF Size: 26.61 MB
Page 1208 of 1897
H03354
H06141AB0119H08272
Airbag
Sensor
Assembly Front Airbag
Sensor (LH)
(+)
SL+
(-)
SL-
ON
Engine Room Main
Wire Harness
u"
H03354H06140H08258
Airbag
Sensor
Assembly Front Airbag
Sensor (LH)
(+)SL+
(-)SL- Engine Room Main
Wire Harness
DI-472
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
628 Author: Date:
2001 AVALON (RM808U)
8 Check engine room main wire harness (to B+).
PREPARATION:
Disconnect the engine room main wire harness connector on
the airbag sensor assembly side.
CHECK:
(a) Turn the ignition switch to ON.
(b) For the connector (on the LH front door wire harness side)
between the airbag sensor assembly and the engine
room main wire harness, measure the voltage between
body ground and each of SL+ and SL-.
OK:
Voltage: Below 1 V
NG Repair or replace engine room main wire har-
ness.
OK
Repair or replace harness or connector between airbag sensor assembly and engine room main
wire harness.
9 Check engine room main wire harness (to ground).
PREPARATION:
Disconnect the engine room main wire harness connector on
the airbag sensor assembly side.
CHECK:
For the connector (on the engine room main wire harness side)
between the airbag sensor assembly and the engine room main
wire harness, measure the resistance between body ground
and each of SL+ and SL-.
OK:
Resistance: 1 MW or Higher
NG Repair or replace engine room main wire har-
ness.
OK
Repair or replace harness or connector between airbag sensor assembly and engine room main
wire harness.
Page 1209 of 1897
H03354H09519H09520
Airbag
Sensor
Assembly
Front Airbag
Sensor (LH)
(-) SL+SL-
Engine Room Main
Wire Harness
(+)
u "
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-473
629 Author: Date:
2001 AVALON (RM808U)
10 Check engine room main wire harness.
PREPARATION:
Disconnect the engine room main wire harness connector on
the airbag sensor assembly side.
CHECK:
For the connector (on the engine room main wire harness side)
between the airbag sensor assembly and the engine room main
wire harness, measure the resistance between SL+ and SL-.
OK:
Resistance: 1 MW or Higher
NG Repair or replace engine room main wire har-
ness.
OK
Repair or replace harness or connector between airbag sensor assembly and engine room main
wire harness.
Page 1210 of 1897
H03352H09519H09521H09522
Airbag
Sensor
Assembly Front Airbag
Sensor (LH)
(+) SL+
(-)SL-
Engine Room Main
Wire Harness
SL+
SL-
u "
DI-474
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
630 Author: Date:
2001 AVALON (RM808U)
11 Check engine room main wire harness.
PREPARATION:
(a) Disconnect the engine room main wire harness connector
on the airbag sensor assembly side.
(b) Using a service wire, connect SL+ and SL- of the connec-
tor (on the engine room main wire harness side) between
the engine room main wire harness and the front airbag
sensor (LH).
CHECK:
For the connector (on the engine room main wire harness side)
between the airbag sensor assembly and the engine room main
wire harness, measure the resistance between SL+ and SL-.
OK:
Resistance: Below 1 W
NG Repair or replace engine room main wire har-
ness.
OK
Repair or replace harness or connector between airbag sensor assembly and engine room main
wire harness.
Page 1212 of 1897
H12003
Airbag Sensor
Assembly
I15
Ignition Switch
Engine Room R/B No. 5IG2 C6ACC 1F
5 6
B-O
B-LC6 W-G
ALTGR
1F
1C 1CDriver Side J/B
10 10
1 7
B-O3
6 2
7 W-L 7
BatteyFL MAINF6 IF1 W-L
IF1W-R 4
W-R
5
5 AM1
21
Engine Room J/BFL Block
72
112G
2G 2C
2HAM2
B
F7
F81
1
B1 SRS-ACC
BAM1ACC
AM2 IG2 DI-476
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
632 Author: Date:
2001 AVALON (RM808U)
WIRING DIAGRAM
Page 1215 of 1897
H12004
Battery10Airbag Sensor Assembly
LA
C63
B-Y 5 12
1F 1A1I
II2
B-Y 5 B-Y
5 AB DLC1
B-Y
56 M7
SRS Warning Light
LG-B
IJ1 4
LG-B
2G 2B
SRS WRN
Engine Room J/BB
FL Block F7
F6 1
1
B FL MAINDriver Side J/B
12
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-479
635 Author: Date:
2001 AVALON (RM808U)
SRS Warning Light Circuit Malfunction
CIRCUIT DESCRIPTION
The SRS warning light is located on the combination meter.
When the SRS is normal, the SRS warning light lights up for approx. 6 seconds after the ignition switch is
turned from the LOCK position to ACC or ON position, and then turns off automatically.
If there is a malfunction in the SRS, the SRS warning light lights up to inform the driver of the abnormality.
When terminals Tc and E1 of the DLC1 are connected, the DTC is displayed by blinking the SRS warning
light.
WIRING DIAGRAM
DI5RJ-04
Page 1226 of 1897
DI-356
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
512 Author: Date:
2001 AVALON (RM808U)DTC No.
(See Page)
Detection ItemTrouble AreaSRS
Warning Light
B0117/45
(DI-412)Short in side squib (LH) circuit
(to ground)Side airbag assembly LH (squib)
Airbag sensor assembly
Wire harness
Blink
B0118/46
(DI-415)Short in side squib (LH) circuit
(to B+)Side airbag assembly LH (squib)
Airbag sensor assembly
Wire harness
Blink
B0130/63
(DI-418)Short in P/T squib (RH) circuitSeat belt pretensioner RH (squib)
Airbag sensor assembly
Wire harness
Blink
B0131/64
(DI-422)Open in P/T squib (RH) circuitSeat belt pretensioner RH (squib)
Airbag sensor assembly
Wire harness
Blink
B0132/61
(DI-425)Short in P/T squib (RH) circuit
(to ground)Seat belt pretensioner RH (squib)
Airbag sensor assembly
Wire harness
Blink
B0133/62
(DI-428)Short in P/T squib (RH) circuit
(to B+)Seat belt pretensioner RH (squib)
Airbag sensor assembly
Wire harness
Blink
B0135/73
(DI-431)Short in P/T squib (LH) circuitSeat belt pretensioner LH (squib)
Airbag sensor assembly
Wire harness
Blink
B0136/74
(DI-435)Open in P/T squib (LH) circuitSeat belt pretensioner LH (squib)
Airbag sensor assembly
Wire harness
Blink
B0137/71
(DI-438)Short in P/T squib (LH) circuit
(to ground)Seat belt pretensioner LH (squib)
Airbag sensor assembly
Wire harness
Blink
B0138/72
(DI-441)Short in P/T squib (LH) circuit
(to B+)Seat belt pretensioner LH (squib)
Airbag sensor assembly
Wire harness
Blink
B1100/31
(DI-444)Airbag sensor assembly malfunctionAirbag sensor assemblyON
B1140/32
(DI-446)Side airbag sensor assembly (RH)
malfunctionSide airbag sensor assembly (RH)
Airbag sensor assembly
Wire harness
Blink
B1141/33
(DI-454)Side airbag sensor assembly (LH)
malfunctionSide airbag sensor assembly (LH)
Airbag sensor assembly
Wire harness
Blink
B1156/B1157/
15
(DI-462)Front airbag sensor (RH) malfunctionFront airbag sensor (RH)
Airbag sensor assembly
Wire harness
ON
B1158/B1159/
16
(DI-467)Front airbag sensor (LH) malfunctionFront airbag sensor (LH)
Airbag sensor assembly
Instrument panel wire harness
Engine room main wire harness
ON
NlSystem normal-OFFNormal
(DI-475)Voltage source dropBattery
Airbag sensor assemblyON
Page 1239 of 1897
I13633
Theft Deterrent ECU
+B2
E
W-B L-R 3C
A5 5
IJ+B1
DOOR NO. 1
10
7 1
2
F7 F6 2G
FL MAIN
Battery 2C 12
1
12 ALT
113D
J9
J/C1B
W-B4B 1G
W
1
F10
B BEngine
Room J/B W-L9
1J9
1B ECU-B
W-GW-G
20
T4
J/B No. 3 Driver Side J/B
Fusible
Link
BlockDriver Side J/B
J/B No. 4
DCC
4A DI-534
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
690 Author: Date:
2001 AVALON (RM808U)
ECU Power Source Circuit
CIRCUIT DESCRIPTION
This circuit provides power to operate the theft deterrent ECU.
WIRING DIAGRAM
DI01W-13
Page 1242 of 1897
I13628
Theft Deterrent ECU
DSWH 18
6
B
B 1 Engine Hood
Courtesy Switch
2
W-B
BIF3
BJ1
J/C
W-B
W-B 4
2D4
2F
EDE3T4
Engine Room J/B
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
DI-547
703 Author: Date:
2001 AVALON (RM808U)
Engine Hood Courtesy Switch Circuit
CIRCUIT DESCRIPTION
The engine hood courtesy switch is built into the engine hood lock assembly and goes ON when the engine
hood is opened and goes OFF when the engine hood is closed.
WIRING DIAGRAM
DI6L4-01
Page 1243 of 1897
I00298
1 (+)
2 (-)
DI-548
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
704 Author: Date:
2001 AVALON (RM808U)
INSPECTION PROCEDURE
1 Check engine hood courtesy switch.
PREPARATION:
(a) Remove engine hood lock assembly.
(b) Disconnect engine hood courtesy switch connector.
CHECK:
Check continuity between terminals 1 and 2 when engine hood
lock is locked and unlocked.
OK:
Engine hood lockTester connectionSpecified condition
LOCK-No continuity
UNLOCK1 - 2Continuity
NG Replace engine hood courtesy switch.
OK
2 Check harness and connector between theft deterrent ECU and switch, switch
and body ground (See page IN-30).
NG Repair or replace harness or connector.
OK
Check and replace theft deterrent ECU (See
page IN-30).
Page 1244 of 1897
I14527
Theft Deterrent ECU
14
IG 2
1
AM1 2
4 3C
AM1 3Ignition Switch
IGY-R
1
ALT FL Block
1
W-B
FL MAIN
BatteryIG1 11
3F18
4H18
4B
13
1B
4
1C Y-R
Y-R
W-R
W-L
W-L7
IF1
1
2G1
2H 5521 3
1B
B-LB F8
F6IG1 RELAY
ECU-IG NO. 2
I15
4
2
T4
Engine Room R/B No. 5
Engine Room J/B Driver Side J/BJ/B No. 3
J/B No. 4
1
1G
F101 W DI-540
- DIAGNOSTICSTHEFT DETERRENT SYSTEM
696 Author: Date:
2001 AVALON (RM808U)
Ignition Switch Circuit
CIRCUIT DESCRIPTION
When the ignition switch is turned to the ACC position, battery positive voltage is applied to the terminal ACC
of the ECU. Also, if the ignition switch is turned to the ON position, battery positive voltage is applied to the
terminals ACC and IG of the ECU. When the battery positive voltage is applied to the terminal ACC of the
ECU while the theft deterrent system is activated, the warning stops. Furthermore, power supplied from the
terminals ACC and IG of the ECU is used as power for the door courtesy switch, and position switch, etc.
WIRING DIAGRAM
DI022-14