Page 1177 of 1897
H01016AB0119
H08394H08269
Airbag
Sensor
Assembly P/T Squib (LH)
PL+
(-) (+) ON
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-441
597 Author: Date:
2001 AVALON (RM808U)
DTC B0138/72 Short in P/T Squib (LH) Circuit (to B+)
CIRCUIT DESCRIPTION
The P/T squib (LH) circuit consists of the airbag sensor assembly and seat belt pretensioner (LH).
It causes the SRS to deploy when the SRS deployment conditions are satisfied.
For details of the function of each component, see OPERATION on page RS-3.
DTC B0138/72 is recorded when a B+ short is detected in the P/T squib (LH) circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0138/72
Short circuit in seat belt pretensioner (LH) wire harness
(to B+)
P/T squib (LH) malfunction
Airbag sensor assembly malfunctionSeat belt pretensioner (LH)
Airbag sensor assembly
Wire harness
WIRING DIAGRAM
See page DI-431.
INSPECTION PROCEDURE
1 Prepare for inspection (See step 1 on page DI-475).
2 Check P/T squib (LH) circuit.
CHECK:
(a) Turn the ignition switch to ON.
(b) For the connector (on the seat belt pretensioner side) be-
tween the seat belt pretensioner (LH) and the airbag sen-
sor assembly, measure the voltage between PL+ and
body ground.
OK:
Voltage: 0 V
NG Repair or replace harness or connector be-
tween seat belt pretensioner (LH) and airbag
sensor assembly.
OK
DI4D7-02
Page 1182 of 1897
H01450
Side Airbag Sensor Assembly (RH)
Airbag Sensor Assembly
GR
LG
L-Y
P ESR
SSR+
VUPR4
3
2
1C77
9
10
12ESR
SSR-
SSR+
VUPR C7
C7
C7 SSR- DI-446
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
602 Author: Date:
DTC B1140/32 Side Airbag Sensor Assembly (RH)
Malfunction
CIRCUIT DESCRIPTION
The side airbag sensor assembly (RH) consists of the safing sensor, diagnosis circuit and lateral decelera-
tion sensor, etc.
It receives signals from the lateral deceleration sensor, judges whether or not the SRS must be activated,
and detects diagnosis system malfunction.
DTC B1140/32 is recorded when occurrence of a malfunction in the side airbag sensor assembly (RH) is
detected.
DTC No.DTC Detecting ConditionTrouble Area
B1140/32Side airbag sensor assembly (RH) malfunction
Side airbag sensor assembly (RH)
Airbag sensor assembly
Wire harness
WIRING DIAGRAM
DI6N0-01
Page 1190 of 1897
H01450
Side Airbag Sensor Assembly (LH)
Airbag Sensor Assembly
LG-B
L-W
P-L ESL
SSL+
VUPL4
3
2
1C512
10
9
7 GR-L
ESL
SSL-
SSL+
VUPL C5
C5
C5 SSL- DI-454
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
610 Author: Date:
DTC B1141/33 Side Airbag Sensor Assembly (LH)
Malfunction
CIRCUIT DESCRIPTION
The side airbag sensor assembly (LH) consists of the safing sensor, diagnosis circuit and lateral deceleration
sensor, etc.
It receives signals from the lateral deceleration sensor, judges whether or not the SRS must be activated,
and detects diagnosis system malfunction.
DTC B1141/33 is recorded when occurrence of a malfunction in the side airbag sensor assembly (LH) is
detected.
DTC No.DTC Detecting ConditionTrouble Area
B1141/33Side airbag sensor assembly (LH) malfunction
Side airbag sensor assembly (LH)
Airbag sensor assembly
Wire harness
WIRING DIAGRAM
DI6N1-01
Page 1198 of 1897
H02751
Airbag Sensor Assembly
Front Airbag Sensor (RH)
+SR
-SR
C69
20
BR-W 2
1 SR+
SR-B-W
C6 DI-462
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
618 Author: Date:
2001 AVALON (RM808U)
DTC B1156/B1157/15 Front Airbag Sensor (RH) Malfunction
CIRCUIT DESCRIPTION
The front airbag sensor (RH) circuit consists of the airbag sensor assembly and front airbag sensor (RH).
For details of the function of each component, see OPERATION on page RS-3.
DTC B1156/B1157/15 is recorded when malfunction is detected in the front airbag sensor (RH) circuit.
DTC No.DTC Detecting ConditionTrouble Area
B1156/B1157/15Front airbag sensor (RH) malfunction
Front airbag sensor (RH)
Airbag sensor assembly
Wire harness
WIRING DIAGRAM
DI6N2-01
Page 1203 of 1897
H02750
Airbag Sensor Assembly Front Airbag Sensor (LH)
+SL
-SL C615
26 2
1 +SL
IF2
-SL21
C6 BR BRW-R W-R
IF2
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-467
623 Author: Date:
2001 AVALON (RM808U)
DTC B1158/B1159/16 Front Airbag Sensor (LH) Malfunction
CIRCUIT DESCRIPTION
The front airbag sensor (LH) circuit consists of the airbag sensor assembly and front airbag sensor (LH).
For details of the function of each component, see OPERATION on page RS-3.
DTC B1158/B1159/16 is recorded when malfunction is detected in the front airbag sensor (LH) circuit.
DTC No.DTC Detecting ConditionTrouble Area
B1158/B1159/16Front airbag sensor (LH) malfunction
Front airbag sensor (LH)
Wire harness
Airbag sensor assembly
Engine room main wire harness
WIRING DIAGRAM
DI6N3-01
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 1220 of 1897
H12005
Airbag Sensor Assembly
Tc
C6
E1
W-B19
P-B 56
1F 1IDriver Side J/B
LG-R
11 3A
3G3B 413
4
J/B No. 3LG-R 4Tc DLC2
LG-R
J/B No. 4
66
4A
4HLG-R
II2 22
LG-R
DLC1
EB
3Tc DI-484
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
640 Author: Date:
2001 AVALON (RM808U)
Tc Terminal Circuit
CIRCUIT DESCRIPTION
By connecting terminals Tc and E1 of the DLC1 the airbag sensor assembly is set in the DTC output mode.
The DTCs are displayed by blinking the SRS warning light.
WIRING DIAGRAM
DI1BQ-18
