Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Echo 2000-2002 Approved techinfo.toyota.com ileaf 02toyrm 02toypdf 02rmsour 2002 02echorm di rs cib01055
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DI-271
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
DI1B6-38
DTC B0105/53 Short in P Squib Circuit
CIRCUIT DESCRIPTION
The P squib circuit consists of the airbag sensor assembly and front passenger airbag assembly.
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 B0105/53 is recorded when a short is detected in the P squib circuit.
DTC No. DTC Detecting Condition Trouble Area
S Short circuit in P squib wire harness S Front passenger airbag assembly (P squib)
B0105/53 S P squib malfunction S Airbag sensor assembly
S Airbag sensor assembly malfunction S Wire harness
WIRING DIAGRAM
Airbag Sensor Assembly
A10
P Squib
10
1 Y-R (SB)
C4 P+
11
2 Y-G (SB)
C4 P-
H01454
2002 ECHO (RM884U)
Author : Date : 441
DI-272
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
INSPECTION PROCEDURE
1 Prepare for inspection. (See step 1 on page DI-390 )
2 Check P squib circuit.
PREPARATION:
Release the airbag activation prevention mechanism of the
P Squib connector (on the airbag sensor assembly side) between the
Airbag
Sensor front passenger airbag assembly and the airbag sensor assem-
Assembly bly. (See page DI-239 )
CHECK:
For the connector (on the front passenger airbag assembly
side) between the front passenger airbag assembly and the air-
bag sensor assembly, measure the resistance between P+ and
P- P+ P-.
OK:
Resistance: 1 M or Higher
(-) (+)
R14286
H02142 H02251
NG Repair or replace harness or connector be-
tween front passenger airbag assembly and air-
bag sensor assembly.
OK
2002 ECHO (RM884U)
Author : Date : 442
DI-273
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
3 Check airbag sensor assembly.
PREPARATION:
P Squib (a) Connect the connector to the airbag sensor assembly.
Airbag (b) Connect negative (-) terminal cable to the battery, and
Sensor wait at least for 2 seconds.
Assembly CHECK:
(a) Turn the ignition switch to ON and wait at least for 20 se-
conds.
(b) Clear DTC stored in memory. (See page DI-239 )
ON (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.
DLC3 DTC B0105/53
(e) Check DTC. (See page DI-239 )
OK:
DTC B0105/53 is not output.
HINT:
CG Tc Codes other than code B0105/53 may be output at this time, but
H01023 they are not relevant to this check.
AB0119
H10600 H01077 H10611
NG Replace airbag sensor assembly.
OK
2002 ECHO (RM884U)
Author : Date : 443
DI-274
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
4 Check P squib.
PREPARATION:
(a) Turn the ignition switch to LOCK.
P Squib Airbag
(b) Disconnect negative (-) terminal cable from the battery,
Sensor and wait at least for 90 seconds.
Assembly (c) Connect the front passenger airbag assembly connector.
(d) Connect negative (-) terminal cable to the battery, and
wait at least for 2 seconds.
CHECK:
ON
(a) Turn the ignition switch to LOOK, and wait at least for 20
seconds.
(b) Turn the ignition switch to ON, and wait at least for 20 se-
conds.
DLC3 DTC B0105/53 (c) Clear DTC stored in memory. (See page DI-239 )
(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-
CG Tc conds.
H01024 (f) Check DTC. (See page DI-239 )
AB0119
H10600 H01077 H10612 OK:
DTC B0105/53 is not output.
HINT:
Codes other than code B0105/53 may be output at this time, but
they are not relevant to this check.
NG Replace front passenger airbag assembly.
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.
2002 ECHO (RM884U)
Author : Date : 444
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