2001 TOYOTA PRIUS Service Repair Manual

H01019H02141H02205
P/T Squib (RH)
Airbag
Sensor
Assembly
PR±
(+) (±) PR+
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±575
2001 PRIUS (RM778U)
DTC B0131/64 Open in P/T Squib (RH) Circuit
CIRCUIT DESCRIPTION
The P/T squib circuit (RH) consists of the airbag sensor assembly and seat belt pretensioner (RH).
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±2.
DTC B0131/64 is recorded when an open is detected in the P/T squib (RH) circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0131/64

Open circuit in PR+ wire harness or PR± wire harness of
squib

P/T squib (RH) malfunction

Airbag sensor assembly malfunction
Seat belt pretensioner (RH)

Airbag sensor assembly

Wire harness
WIRING DIAGRAM
See page DI±566.
INSPECTION PROCEDURE
1 Prepare for inspection (See step 1 on page DI±629).
2 Check P/T squib (RH) circuit.
CHECK:
For the connector (on the seat belt pretensioner side) between
the seat belt pretensioner (RH) and the airbag sensor assem-
bly, measure the resistance between PR+ and PR±.
OK:
Resistance: Below 1 W
NG Repair or replace harness or connector be-
tween seat belt pretensioner (RH) and airbag
sensor assembly.
OK
DI6PK±04

H01020H02139AB0119H01083 H10600H10621
P/T Squib (RH)Airbag
Sensor
Assembly
PR+
PR±
DTC B0131/64
" u
ON
DLC3
Tc CG
DI±576
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
2001 PRIUS (RM778U)
3 Check airbag sensor assembly.
PREPARATION:
(a) Connect the connector to the airbag sensor assembly.
(b) Using a service wire, connect PR+ and PR± of the con-
nector (on the seat belt pretensioner side) between the
seat belt pretensioner (RH) and the airbag sensor assem-
bly.
(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 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 B0131/64 is not output.
HINT:
Codes other than code B0131/64 may be output at this time, but
they are not relevant to this check.
NG Replace airbag sensor assembly.
OK

AB0119H01021
H01083 H10600H10622
"u
ONAirbag
Sensor
Assembly P/T Squib (RH)
DTC B0131/64
DLC3
Tc CG
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±577
2001 PRIUS (RM778U)
4 Check P/T squib (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 seat belt pretensioner (RH) 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 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 B0131/64 is not output.
HINT:
Codes other than code B0131/64 may be output at this time, but
they are not relevant to this check.
NG Replace seat belt pretensioner (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.

H01019H08392H08393
P/T Squib (RH)Airbag
Sensor
Assembly
(+)
(±)PR+
DI±578
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
2001 PRIUS (RM778U)
DTC B0132/61 Short in P/T Squib (RH) Circuit
(to Ground)
CIRCUIT DESCRIPTION
The P/T squib (RH) circuit consists of the airbag sensor assembly and seat belt pretensioner (RH).
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±2.
DTC B0132/61 is recorded when a ground short is detected in the P/T squib (RH) circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0132/61

Short circuit in P/T squib (RH) wire harness (to ground)

P/T squib (RH) malfunction

Airbag sensor assembly malfunction
Seat belt pretensioner (RH)

Airbag sensor assembly

Wire harness
WIRING DIAGRAM
See page DI±566.
INSPECTION PROCEDURE
1 Prepare for inspection (See step 1 on page DI±629).
2 Check P/T squib (RH) circuit.
CHECK:
For the connector (on the seat belt pretensioner side) between
the seat belt pretensioner (RH) and the airbag sensor assem-
bly, measure the resistance between PR+ and body ground.
OK:
Resistance: 1 MW or Higher
NG Repair or replace harness or connector be-
tween seat belt pretensioner (RH) and airbag
sensor assembly.
OK
DI6PL±04