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DI-320
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
DI1BI-24
DTC B0133/62 Short in P/T Squib (RH) Circuit (to B+)
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 B0133/62 is recorded when a B+ short is detected in the P/T squib (RH) circuit.
DTC No. DTC Detecting Condition Trouble Area
S Short circuit in seat belt pretensioner (RH) wire harness
S Seat belt pretensioner (RH)
(to B+)
B0133/62 S Airbag sensor assembly
S P/T squib (RH) malfunction
S Wire harness
S Airbag sensor assembly malfunction
WIRING DIAGRAM
See page DI-310 .
INSPECTION PROCEDURE
1 Prepare for inspection (See step 1 on page DI-390 ).
2 Check P/T squib (RH) circuit.
ON CHECK:
(a) Turn the ignition switch to ON.
(b) For the connector (on the seat belt pretensioner side) be-
Airbag tween the seat belt pretensioner (RH) and the airbag sen-
P/T Squib (RH) Sensor
Assembly sor assembly, measure the voltage between PR+ and
body ground.
OK:
Voltage: 0 V
PR+
(-) (+)
NG Repair or replace harness or connector be-
H01019 tween seat belt pretensioner (RH) and airbag
AB0119
H08394 H08268 sensor assembly.
OK
2002 ECHO (RM884U)
Author : Date : 490
DI-321
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
3 Check airbag sensor assembly.
PREPARATION:
(a) Connect the connector to the airbag sensor assembly.
P/T Squib (RH) Airbag (b) Using a service wire, connect PR+ and PR- of the con-
Sensor
Assembly
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
PR+ PR- wait at least for 2 seconds.
ON CHECK:
(a) Turn the ignition switch to ON and wait at least for 20 se-
conds.
(b) Clear DTC stored in memory (See step 5 on page
DLC3 DTC B0133/62 DI-239 ).
(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-
CG Tc conds.
H01020
(e) Check DTC (See page DI-239 ).
H02139 AB0119
H10600 H01081 H10625 OK:
DTC B0133/62 is not output.
HINT:
Codes other than code B0133/62 may be output at this time, but
they are not relevant to this check.
NG Replace airbag sensor assembly.
OK
2002 ECHO (RM884U)
Author : Date : 491
DI-322
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
4 Check P/T squib (RH).
PREPARATION:
(a) Turn the ignition switch to LOCK.
(b) Disconnect negative (-) terminal cable from the battery,
Airbag and wait at least for 90 seconds.
P/T Squib (RH)
Sensor
Assembly (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-
ON
conds.
(b) Clear DTC stored in memory (See step 5 on page
DI-239 ).
DLC3 (c) Turn the ignition switch to LOCK, and wait at least for 20
DTC B0133/62
seconds.
(d) Turn the ignition switch to ON, and wait at least for 20 se-
conds.
CG Tc (e) Check DTC (See page DI-239 ).
H01021
OK:
AB0119
H10600 H01081 H10626 DTC B0133/62 is not output.
HINT:
Codes other than code B0133/62 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. If the malfunctioning part can not be
detected by the simulation method, replace all SRS components including the wire harness.
2002 ECHO (RM884U)
Author : Date : 492
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