Page 1158 of 1943

AB0119H01018
H01085 H10600H10634
"u
ONAirbag
Sensor
Assembly P/T Squib (LH)
DTC B0138/72 DLC3
Tc CG
DI±596
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
2001 PRIUS (RM778U)
4 Check P/T squib (LH).
PREPARATION:
(a) Turn the ignition switch to LOCK.
(b) Disconnect negative (±) terminal cable from the battery,
and wait at least for 90 seconds.
(c) Connect the seat belt pretensioner (LH) connector.
(d) Connect negative (±) terminal cable to the battery, and
wait at least for 2 seconds.
CHECK:
(a) Turn the ignition switch to ON, and wait at least for 20 se-
conds.
(b) Clear the DTC stored in memory (See step 5 on page
DI±497).
(c) Turn the ignition switch to LOCK, and wait at least for 20
seconds.
(d) Turn the ignition switch to ON, and wait at least for 20 se-
conds.
(e) Check the DTC (See page DI±497).
OK:
DTC B0138/72 is not output.
HINT:
Codes other than code B0138/72 may be output at this time, but
they are not relevant to this check.
NG Replace seat belt pretensioner (LH).
OK
From the results of the above inspection, the malfunctioning part can now be considered normal.
To make sure of this, use the simulation method to check. If the malfunctioning part can not be
detected by the simulation method, replace all SRS components including the wire harness.
Page 1159 of 1943

AB0119H01298H01299
(±) (+)ONAirbag Sensor Assembly
IG1
IG2
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±597
2001 PRIUS (RM778U)
DTC B1100/31 Airbag Sensor Assembly Malfunction
CIRCUIT DESCRIPTION
The airbag sensor assembly consists of a airbag sensor, safing sensor, drive circuit, diagnosis circuit and
ignition control, etc.
It receives signals from the airbag sensor, judges whether or not the SRS must be activated, and detects
diagnosis system malfunction.
DTC B1100/31 is recorded when occurrence of a malfunction in the airbag sensor assembly is detected.
DTC No.DTC Detecting ConditionTrouble Area
B1100/31Airbag sensor assembly malfunctionAirbag sensor assembly
INSPECTION PROCEDURE
HINT:
When a malfunction code other than code B1100/31 is displayed at the same time, first repair the malfunction
indicated by the malfunction code other than code B1100/31.
1 Prepare for inspection (See step 1 on page DI±629).
2 Check voltage at IG1 and IG2 of airbag sensor assembly.
CHECK:
(a) Turn the ignition switch to ON.
(b) Measure the voltage between body ground and each of
terminals IG1 and IG2 of the airbag sensor assembly con-
nector.
OK:
Voltage: 10 ± 14 V
NG Check that an abnormality occurs on the battery
and charging system.
OK
DI6PR±01
Page 1162 of 1943

H15222
ON
Airbag
Sensor
Assembly
DTC B1135/24
DLC3
CGT
c
DI±600
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
2001 PRIUS (RM778U)
3 Check airbag sensor assembly.
PREPARATION:
(a) Connect the connectors to the airbag sensor assembly.
(b) Connect negative (±) terminal cable to the battery, and
wait at least for 2 seconds.
CHECK:
(a) Turn the ignition switch to LOCK, and wait at least for 20
seconds.
(b) Turn the ignition switch to ON, and wait at least for 20 se-
conds.
(c) Clear the DTC stored in memory (See page DI±497).
(d) Turn the ignition switch to LOCK, and wait at least for 20
seconds.
(e) Turn the ignition switch to ON, and wait at least for 20 se-
conds.
(f) Check the DTC (See page DI±497).
OK:
DTC B1135/24 is not output.
HINT:
Codes other than code B1135/24 may be output at this time, but
they are not relevant to this check.
NG Go to the next step.
OK
From the results of the inspection, the malfunctioning part can now be considered normal.
To make sure of this, use the simulation method to check.
Page 1169 of 1943

AB0119H01012
H01065H10600H13119
Airbag
Sensor
Assembly Side Airbag Sensor
Assembly (RH)
CG TcON
" u
DTC B1140/32 " u
DLC3
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±607
2001 PRIUS (RM778U)
8 Is DTC B1140/32 out put again?
PREPARATION:
(a) Connect the connector to the side airbag sensor assem-
bly (RH).
(b) Connect the connector to the airbag sensor assembly.
(c) Connect negative (±) terminal cable to the battery, and
wait at least for 2 seconds.
CHECK:
(a) Turn the ignition switch to ON, and wait at least for 20 se-
conds.
(b) Clear the DTC stored in memory (See step 5 on page
DI±497).
(c) Turn the ignition switch to LOCK, and wait at least for 20
seconds.
(d) Turn the ignition switch to ON, and wait at least for 20 se-
conds.
(e) Check the DTC (See page DI±497).
OK:
DTC B1140/32 is not output.
HINT:
Codes other than code B1140/32 may be output at this time, but
they are not relevant to this check.
NG Go to step 9.
OK
From the results of the above inspection, the malfunctioning part can now be considered normal.
To make sure of this, use the simulation method to check.
Page 1170 of 1943

AB0119H01012
H01065H10600H13119
Airbag
Sensor
Assembly Side Airbag Sensor
Assembly (RH)
CG TcON
DTC B1140/32 " u
DLC3
DI±608
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
2001 PRIUS (RM778U)
9 Check airbag sensor assembly.
PREPARATION:
(a) Turn the ignition switch to LOCK.
(b) Disconnect negative (±) terminal cable from the battery,
and wait at least for 90 seconds.
(c) Disconnect the side airbag sensor (RH) from the connec-
tor and connect the side airbag sensor (LH) to the con-
nector.
(d) Connect negative (±) terminal cable to the battery, and
wait at least for 2 seconds.
CHECK:
(a) Turn the ignition switch to ON, and wait at least for 20 se-
conds.
(b) Clear the DTC stored in memory (See step 5 on page
DI±497).
(c) Turn the ignition switch to LOCK, and wait at least for 20
seconds.
(d) Turn the ignition switch to ON, and wait at least for 20 se-
conds.
(e) Check the DTC (See page DI±497).
OK:
DTC B1140/32 is not output.
HINT:
Codes other than code B1140/32 may be output at this time, but
they are not relevant to this check.
NG Replace airbag sensor assembly.
OK
Page 1171 of 1943

AB0119H01007
H01066H10600H12033
Airbag
Sensor
Assembly
Side Airbag Sensor
Assembly (RH)
CG
TcON
DTC B1141/33 " u
DLC3
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±609
2001 PRIUS (RM778U)
10 Check side airbag sensor assembly (RH).
PREPARATION:
(a) Turn the ignition switch to LOCK.
(b) Disconnect negative (±) terminal cable from the battery,
and wait at least for 90 seconds.
(c) Connect the side airbag sensor (RH) to the connector that
the side airbag sensor (LH) was connected to.
(d) Connect negative (±) terminal cable to the battery, and
wait at least for 2 seconds.
CHECK:
(a) Turn the ignition switch to ON, and wait at least for 20 se-
conds.
(b) Clear the DTC stored in memory (See step 5 on page
DI±497).
(c) Turn the ignition switch to LOCK, and wait at least for 20
seconds.
(d) Turn the ignition switch to ON, and wait at least for 20 se-
conds.
(e) Check the DTC (See page DI±497).
OK:
DTC B1141/33 is not output.
HINT:
Codes other than code B1141/33 may be output at this time, but
they are not relevant to this check.
NG Replace side airbag sensor assembly (RH).
OK
From the results of the above inspection, the malfunctioning part can now be considered normal.
To make sure of this, use the simulation method to check.
Page 1177 of 1943

AB0119H01007
H01066H10600H12033
Airbag
Sensor
Assembly Side Airbag Sensor Assembly (LH)
CG
TcON
" u
DTC B1141/33 " u
DLC3
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±615
2001 PRIUS (RM778U)
8 Is DTC B1141/33 out put again?
PREPARATION:
(a) Connect the connector to the side airbag sensor assem-
bly (LH).
(b) Connect the connector to the airbag sensor assembly.
(c) Connect negative (±) terminal cable to the battery, and
wait at least for 2 seconds.
CHECK:
(a) Turn the ignition switch to ON, and wait at least for 20 se-
conds.
(b) Clear the DTC stored in memory (See step 5 on page
DI±497).
(c) Turn the ignition switch to LOCK, and wait at least for 20
seconds.
(d) Turn the ignition switch to ON, and wait at least for 20 se-
conds.
(e) Check the DTC (See page DI±497).
OK:
DTC B1141/33 is not output.
HINT:
Codes other than code B1141/33 may be output at this time, but
they are not relevant to this check.
NO Go to step 9.
YES
From the results of the above inspection, the malfunctioning part can now be considered normal.
To make sure of this, use the simulation method to check.
Page 1178 of 1943

AB0119H01007
H01066H10600H12033
Airbag
Sensor
Assembly
Side Airbag Sensor
Assembly (RH)
CG
TcON
DTC B1141/33 " u
DLC3
DI±616
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
2001 PRIUS (RM778U)
9 Check airbag sensor assembly.
PREPARATION:
(a) Turn the ignition switch to LOCK.
(b) Disconnect negative (±) terminal cable from the battery,
and wait at least for 90 seconds.
(c) Disconnect the side airbag sensor (LH) from the connec-
tor and connect the side airbag sensor (RH) to the con-
nector.
(d) Connect negative (±) terminal cable to the battery, and
wait at least for 2 seconds.
CHECK:
(a) Turn the ignition switch to ON, and wait at least for 20 se-
conds.
(b) Clear the DTC stored in memory (See step 5 on page
DI±497).
(c) Turn the ignition switch to LOCK, and wait at least for 20
seconds.
(d) Turn the ignition switch to ON, and wait at least for 20 se-
conds.
(e) Check the DTC (See page DI±497).
OK:
DTC B1141/33 is not output.
HINT:
Codes other than code B1141/33 may be output at this time, but
they are not relevant to this check.
NG Replace airbag sensor assembly.
OK