TOYOTA PRIUS 2001 Service Repair Manual

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.

H01450
Side Airbag Sensor Assembly (LH)
Airbag Sensor Assembly
LG±B
L±W
P±L ESL
FSL
SSL+
VUPL4
3
2
1A179
12
10
7 GR±L
ESL
SSL±
SSL+
VUPL A17
A17
A17 DI±610
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
2001 PRIUS (RM778U)
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
B1141/33
Side airbag sensor assembly (LH) malfunction

Side airbag sensor assembly (LH)

Wire harness

Airbag sensor assembly
WIRING DIAGRAM
DI6PT±03

AB0119H09530H10600H12034
ON
CG
TcDTC B1141/33
DLC3
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±611
2001 PRIUS (RM778U)
INSPECTION PROCEDURE
1 Is DTC B1141/33 out put?
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).
HINT:
Codes other than code B1141/33 may be output at this time, but
they are not relevant to this check.
YES The malfunctioning part can now be considered
normal. To make sure of this, use the simulation
method to check.
NO
2 Is connector of side airbag sensor assembly (LH) properly connected?
3 Prepare for inspection (See step 1 on page DI±629).

H01050
H01010H16250H16303
Airbag
Sensor
Assembly
(±)(+)
SSL+ Airbag Sensor
Assembly
ESL SSL+
ESL
Side Airbag Sensor
Assembly (LH)u"
DI±612
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
2001 PRIUS (RM778U)
4 Check wire harness.
PREPARATION:
(a) Disconnect the side airbag sensor assembly (LH).
(b) Using a service wire, connect SSL+ and ESL of the con-
nector (on the side airbag sensor assembly side) between
the side airbag sensor assembly (LH) and the airbag sen-
sor assembly.
CHECK:
For the connector (on the airbag sensor assembly side) be-
tween the side airbag sensor assembly (LH) and the airbag
sensor assembly, measure the resistance between SSL+ and
ESL.
OK:
Resistance: Below 1 W
NG Repair or replace harness or connector be-
tween side airbag sensor assembly (LH) and air-
bag sensor assembly.
OK

H01010
H01051H16249H16304
Airbag
Sensor
Assembly
(±)(+) Side Airbag Sensor
Assembly (LH)
VUPL Airbag Sensor
Assembly
VUPL
FSL
FSL
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±613
2001 PRIUS (RM778U)
5 Check wire harness.
PREPARATION:
Using a service wire, connect VUPL and FSL of the connector
(on the side airbag sensor assembly side) between the side air-
bag sensor assembly (LH) and the airbag sensor assembly.
CHECK:
For the connector (on the airbag sensor assembly side) be-
tween the side airbag sensor assembly (LH) and the airbag
sensor assembly, measure the resistance between VUPL and
FSL.
OK:
Resistance: Below 1 W
NG Repair or replace harness or connector be-
tween side airbag sensor assembly (LH) and air-
bag sensor assembly.
OK

H01052H01008H01168
Airbag
Sensor
Assembly SIde Airbag Sensor Assembly
(LH)
Airbag Sensor Assembly
VUPL
(±) (+)SSL+
FSL
H01008
H01053AB0119H08271
Airbag
Sensor
Assembly Side Airbag Sensor
Assembly (LH)
Airbag Sensor Assembly
VUPL
(±)
(+) SSL+ FSLESLON
DI±614
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
2001 PRIUS (RM778U)
6 Check wire harness (to ground).
CHECK:
For the connector (on the airbag sensor assembly side) be-
tween the side airbag sensor assembly (LH) and the airbag
sensor assembly, measure the resistance between body
ground and each of SSL+, VUPL and FSL.
OK:
Resistance: 1 MW or Higher
NG Repair or replace harness or connector be-
tween side airbag sensor assembly (LH) and air-
bag sensor assembly.
OK
7 Check wire harness (to B+).
CHECK:
(a) Turn ignition switch to ON.
(b) For the connector (on the airbag sensor assembly side)
between the side airbag sensor assembly (LH) and the
airbag sensor assembly, measure the voltage between
body ground and each of SSL+, ESL, VUPL and FSL.
OK:
Voltage: 0 V
NG Repair or replace harness or connector be-
tween side airbag sensor assembly (LH) and air-
bag sensor assembly.
OK

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.

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

AB0119H01012
H01065H10600H13119
Airbag
Sensor
Assembly Side Airbag Sensor
Assembly (LH)
CG TcON
DTC B1140/32 " u
DLC3
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±617
2001 PRIUS (RM778U)
10 Check side airbag sensor assembly (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 side airbag sensor (LH) to the connector that
the side airbag sensor (RH) 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 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 side airbag sensor assembly (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.

H16901
Airbag Sensor Assembly Front Airbag Sensor (RH)
+SR
±SR A18
A189
20 B±W
BR±W IL13
4 B±W
BR±W 2
1 +SR
±SR IL1 DI±618
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
2001 PRIUS (RM778U)
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±2.
DTC B1156/B1157/15 is recorded when a malfunction is detected in the front airbag sensor (RH) circuit.
DTC No.DTC Detecting ConditionTrouble Area
B1156/B1157/15
Front airbag sensor (RH) malfunction

Front airbag sensor (RH)

Airbag sensor assembly

Wire harness

Engine room No. 2 wire harness
WIRING DIAGRAM
DI6PW±06