DI–616
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
878
Author:
Date:
2003 TOYOTA TACOMA (RM1002U)
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
B0105/53
Short circuit in P squib wire harness
P squib malfunction
Airbag sensor assembly malfunction
Front passenger airbag assembly (P squib)
Passenger airbag manual on–off switch
Airbag sensor assembly
Wire harness
DI69Q–04
H09415
3
P20
Passenger Airbag
Manual On–Off Switch
A21
P Squib
Airbag Sensor
Assembly
I14 Ignition Switch
Y–R
1
GR
G–W
10
11
P+
P–
P19
Passenger Airbag
Manual On–Off Indicator
16
17
3G
15A ECU–IG
3G
Y–R
3
1G
J/B No. 1
120A ALT
1I
2
IE
B–Y
4
2 W
W–B
J/B No. 3
W–B
2
2
2
2
1
1
40A AM1
W
R/B No. 2
Battery
C21
C21
1
4
2
2
2
3H
3H
18
17
1
G–R
LG
J/B No. 3
IG1
AM1
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
DI–617
879
Author:
Date:
2003 TOYOTA TACOMA (RM1002U)
WIRING DIAGRAM
H02142
H11837
H11845
P Squib
P +
P–
(–)
(+)
Airbag
Sensor
Assembly
Passenger Airbag
Manual On–Off
Switch
ON
DI–618
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
880
Author:
Date:
2003 TOYOTA TACOMA (RM1002U)
INSPECTION PROCEDURE
1
Prepare for inspection (See step 1 on page DI–675).
2
Check passenger airbag manual on–off switch (See page RS–46).
NG
Replace passenger airbag manual on–off
switch.
OK
3
Check P squib circuit.
PREPARATION:
(a)
Turn the passenger airbag manual on–off switch to ON.
(b)
Release the airbag activation prevention mechanism of
the connector (on the airbag sensor assembly side) be-
tween the front passenger airbag assembly and the air-
bag sensor assembly (See page DI–588).
CHECK:
For the connector (on the front passenger airbag assembly
side) between the front passenge