Page 3057 of 4770

DI1B1±08
H01357
C18
C17C19
287 8 9 10 16 17
18A B12 3 4 5 6
11 12 15 14 13
AABB
19 20 21 22 23 24 25 26 27 1 2 3 4 5 6
7 8 9 10 11 121 2 3 4 5 6
7 8 9 10 11 12
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±637
872 Author: Date:
TERMINALS OF ECU
No.SymbolTerminal Name
A±Electrical Connector Check Mechanism
B±Electrical Connector Check Mechanism
C18 ± 3LASRS Warning Light
C18 ± 5IG2Power Source (IGN Fuse)
C18 ± 6ACCPower Source (CIG Fuse)
C18 ± 9SR+Front Airbag Sensor (RH)
C18 ± 10P+Squib (Passenger)
C18 ± 11P±Squib (Passenger)
C18 ± 12SILDiagnosis
C18 ± 13D±Squib (Driver)
C18 ± 14D+Squib (Driver)
C18 ± 15SL+Front Airbag Sensor (LH)
C18 ± 19TcDiagnosis
C18 ± 20SR±Front Airbag Sensor (RH)
C18 ± 26SL±Front Airbag Sensor (LH)
C18 ± 27E1Ground
C18 ± 28E2Ground
C17 ± 1PL±Squib (Seat Belt Pretensioner, LH)
C17 ± 2PL+Squib (Seat Belt Pretensioner, LH)
C17 ± 5SFL+Squib (Side, LH)
C17 ± 6SFL±Squib (Side, LH)
C17 ± 7VUPLSide Airbag Sensor (LH)
C17 ± 9SSL+Side Airbag Sensor (LH)
C17 ± 10FSLSide Airbag Sensor (LH)
C17 ± 12ESLSide Airbag Sensor (LH)
Page 3058 of 4770
DI±638
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
873 Author: Date:
No.SymbolTerminal Name
C19 ± 1SFR±Squib (Side, RH)
C19 ± 2SFR+Squib (Side, RH)
C19 ± 5PR+Squib (Pretensioner, RH)
C19 ± 6PR±Squib (Pretensioner, RH)
C19 ± 7ESRSide Airbag Sensor (RH)
C19 ± 9FSRSide Airbag Sensor (RH)
C19 ± 10SSR+Side Airbag Sensor (RH)
C19 ± 12VUPRSide Airbag Sensor (RH)
Page 3059 of 4770
DI164±18
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±639
874 Author: Date:
PROBLEM SYMPTOMS TABLE
Proceed with troubleshooting of each circuit in the table below.
SymptomSuspect AreaSee page
With the ignition switch in ACC or ON position, the SRS warning
light sometimes lights up after approx. 6 seconds have elapsed.SRS warning light circuit
(Al li ht h i iti it h i i LOCK iDI 790SRS warning light is always lit up even when ignition switch is in
the LOCK position.(Always lights up when ignition switch is in LOCK posi-
tion.)DI±790
With the ignition switch in ACC or ON position, the SRS warning
light does not light up.SRS warning light circuit
(Does not light up when ignition switch is turned to ACC or
ON.)
DI±792
DTC is not displayed.
SRS warning light is always lit up at the time of DTC check pro-
cedure.Tc terminal circuitDI±796
DTC is displayed without Tc and E1 terminal connection.
Page 3060 of 4770
DI18Q±09
H01451
Y±B
D+ C1814Airbag Sensor Assembly
13
C18 D± Y 1
2
Spiral
Cable D Squib DI±640
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
875 Author: Date:
CIRCUIT INSPECTION
DTC B0100/13 Short in D Squib Circuit
CIRCUIT DESCRIPTION
The D squib circuit consists of the airbag sensor assembly, spiral cable and steering wheel pad.
It causes the airbag to deploy when the airbag deployment conditions are satisfied.
For details of the function of each component, see OPERATION on page RS±2.
DTC B0100/13 is recorded when a short is detected in the D squib circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0100/13
Short circuit between D+ wire harness and D± wire har-
ness of squib
D squib malfunction
Spiral cable malfunction
Airbag sensor assembly malfunctionSteering wheel pad (D squib)
Spiral cable
Airbag sensor assembly
Wire harness
WIRING DIAGRAM
Page 3061 of 4770
R14286H01001H01134
D SquibSpiral
Cable
Airbag
Sensor
Assembly
D+ u"
(±) (+)D±
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±641
876 Author: Date:
INSPECTION PROCEDURE
1 Prepare for inspection. (See step 1 on page DI±787)
2 Check D squib circuit.
PREPARATION:
Release the airbag activation prevention mechanism of the
connector (on the airbag sensor assembly side) between the
airbag sensor assembly and the spiral cable.
(See page DI±626)
CHECK:
For the connector (on the spiral cable side) between the spiral
cable and the steering wheel pad, measure the resistance be-
tween D+ and D±.
OK:
Resistance: 1 MW or Higher
NG Go to step 5.
OK
Page 3062 of 4770
FI1390AB0118
R13006AB0119H01002H07478
D SquibSpiral
Cable
Airbag
Sensor
Assembly
E1TcON
or
DTC B0100/13
DLC1"u
ACC
DI±642
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
877 Author: Date:
3 Check airbag sensor assembly.
PREPARATION:
(a) Connect the connector to the airbag sensor assembly.
(b) Connect negative (±) terminal cable to the battery, and
wait at least for 2 seconds.
CHECK:
(a) Turn ignition switch to ACC or ON and wait at least for 20
seconds.
(b) Clear DTC stored in memory.
(See page DI±626)
(c) Turn ignition switch to LOCK, and wait at least for 20 se-
conds.
(d) Turn ignition switch to ACC or ON, and wait at least for 20
seconds.
(e) Check DTC.
(See page DI±626)
OK:
DTC B0100/13 is not output.
HINT:
Codes other than code B0100/13 may be output at this time, but
they are not relevant to this check.
NG Replace airbag sensor assembly.
OK
Page 3063 of 4770

AB0118
R13006AB0119FI1390
H01003H01136
D SquibSpiral
CableAirbag
Sensor
Assembly
E1 TcACC ON
or
DTC B0100/13
DLC1
" u
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±643
878 Author: Date:
4 Check D squib.
PREPARATION:
(a) Turn ignition switch to LOCK.
(b) Disconnect negative (±) terminal cable from the battery,
and wait at least for 90 seconds.
(c) Connect the steering wheel pad connector.
(d) Connect negative (±) terminal cable to the battery, and
wait at least for 2 seconds.
CHECK:
(a) Turn ignition switch to LOCK, and wait at least for 20 se-
conds.
(b) Turn ignition switch to ACC or ON, and wait at least for 20
seconds.
(c) Clear DTC stored in memory.
(See page DI±626)
(d) Turn ignition switch to LOCK, and wait at least for 20 se-
conds.
(e) Turn ignition switch to ACC or ON, and wait at least for 20
seconds.
(f) Check DTC.
(See page DI±626)
OK:
DTC B0100/13 is not output.
HINT:
Codes other than code B0100/13 may be output at this time, but
they are not relevant to this check.
NG Replace steering wheel pad.
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.
Page 3064 of 4770

R14286H01000H01137
D SquibSpiral
Cable
Airbag
Sensor
Assembly
D+ u"
(±) (+)D±
R14286H01004H01138
D SquibSpiral
Cable
Airbag
Sensor
Assembly
D+ u"
(±) (+)D±
DI±644
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
879 Author: Date:
5 Check spiral cable.
PREPARATION:
(a) Disconnect the connector between the airbag sensor as-
sembly and the spiral cable.
(b) Release the airbag activation prevention mechanism of
the spiral cable connector on the airbag sensor assembly
side. (See page DI±626)
CHECK:
For the connector (on the spiral cable side) between the spiral
cable and the steering wheel pad, measure the resistance be-
tween D+ and D±.
OK:
Resistance: 1 MW or Higher
NG Repair or replace spiral cable.
OK
6 Check harness between airbag sensor assembly and spiral cable.
PREPARATION:
Release the airbag activation prevention mechanism of the
connector (on the airbag sensor assembly side) between the
airbag sensor assembly and the spiral cable. (See page
DI±626)
CHECK:
For the connector (on the spiral cable side) between the airbag
sensor assembly and the spiral cable, measure the resistance
between D+ and D±.
OK:
Resistance: 1 MW or Higher
NG Repair or replace harness or connector be-
tween airbag sensor assembly and spiral cable.
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.