1999 TOYOTA CAMRY ignition

H01001
R14288AB0119
H04530
D SquibSpiral
Cable
Airbag
Sensor
Assembly
D+
(±) (+)
ON
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±247
DTC B0103/12 Short in D Squib Circuit (to B+)
CIRCUIT DESCRIPTION
The D squib circuit consists of the airbag sensor assembly, spiral cable and steering wheel pad.
It causes the SRS to deploy when the SRS deployment conditions are satisfied.
For details of the function of each component, see Pub. No. RM654U on page RS±2.
DTC B0103/12 is recorded when a B+ short is detected in the D squib circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0103/12

Short circuit in D squib wire harness (to B+)

D squib malfunction

Spiral cable malfunction

Airbag sensor assembly malfunction
Steering wheel pad (D squib)

Spiral cable

Airbag sensor assembly

Wire harness
WIRING DIAGRAM
See page DI±234.
INSPECTION PROCEDURE
1 Prepare for inspection (See step 1 on page DI±305).
2 Check D squib circuit.
CHECK:
(a) Turn ignition switch to ON.
(b) For the connector (on the spiral cable side) between the
spiral cable and the steering wheel pad, measure the volt-
age between D+ and body ground.
OK:
Voltage: 0 V
NG Go to step 5.
OK
DI4L3±05

AB0069
AB0118
R13006AB0119
W02043H01002
H01131
D SquibSpiral
Cable
Airbag
Sensor
Assembly
D+
E1D±
TcACCON
or
DTC B0103/12
DLC1
" u
DI±248
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
3 Check airbag sensor assembly.
PREPARATION:
(a) Connect the connector to the airbag sensor assembly.
(b) Using a service wire, connect D+ and D± of the connector
(on the spiral cable side) between the spiral cable and the
steering wheel pad.
(c) 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 step 5 on page
DI±223).
(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±223).
OK:
DTC B0103/12 is not output.
HINT:
Codes other than code B0103/12 may be output at this time, but
they are not relevant to this check.
NG Replace airbag sensor assembly.
OK

R13006 AB0118 AB0019W02043
H01003
H01132
"u
Spiral
Cable
E1 TcACC ON
or
DTC B0103/12
DLC1
Airbag
Sensor
Assembly
D Squib
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±249
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 ACC or ON, and wait at least for 20
seconds.
(b) Clear DTC stored in memory (See step 5 on page
DI±223).
(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±223).
OK:
DTC B0103/12 is not output.
HINT:
Codes other than code B0103/12 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. If the malfunctioning part can not be
detected by the simulation method, replace all SRS components including the wire harness.

AB0119
R14288H01000
H01133
D SquibSpiral
Cable
Airbag
Sensor
Assembly
D+ u"
(±) (+)ON
H01004R14288
AB0119
H08261
D SquibSpiral
Cable
(±) (+)D+
Airbag
Sensor
Assembly
ON
DI±250
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
5 Check spiral cable.
PREPARATION:
(a) Turn ignition switch to LOCK.
(b) Disconnect the connector between the airbag sensor as-
sembly and the spiral cable.
CHECK:
(a) Turn ignition switch to ON.
(b) For the connector (on the spiral cable side) between the
spiral cable and the steering wheel pad, measure the volt-
age between D+ and body ground.
OK:
Voltage: 0 V
NG Repair or replace spiral cable.
OK
6 Check harness between airbag sensor assembly and spiral cable.
CHECK:
(a) Turn ignition switch to ON.
(b) For the connector (on the spiral cable side) between the
spiral cable and airbag sensor assembly, measure the
voltage between D+ and body ground.
OK:
Voltage: 0 V
NG Repair or replace harness between airbag sen-
sor 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. If the malfunctioning part can not be
detected by the simulation method, replace all SRS components including the wire harness.

H01023AB0118AB0119R13006H01077H07479
P Squib
Airbag
Sensor
Assembly
ACC
or
DTC B0105/53 DLC1
E1
TcON " u
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±253
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±223).
(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±223).
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 airbag sensor assembly.
OK

H01024AB0118AB0119R13006H01077H01202
"u
E1Tc ACC ON
or
DTC B0105/53 DLC1Airbag
Sensor
Assembly P Squib
DI±254
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
4 Check P 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 front passenger airbag assembly connector.
(d) Connect negative (±) terminal cable to the battery, and
wait at least for 2 seconds.
CHECK:
(a) Turn ignition switch to LOOK, 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±223)
(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±223)
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.

H01023
AB0118AB0119R13006H01078 H02144H02253
P Squib
Airbag
Sensor
Assembly
P +
P±ACC
or
DTC B0106/54 DLC1
ON " u
E1 Tc
DI±256
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
3 Check airbag sensor assembly.
PREPARATION:
(a) Connect the connector to the airbag sensor assembly.
(b) Using a service wire, connect P+ and P± of the connector
(on the front passenger airbag assembly side) between
the front passenger airbag assembly and the airbag sen-
sor assembly.
(c) 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±223).
(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±223).
OK:
DTC B0106/54 is not output.
HINT:
Codes other than code B0106/54 may be output at this time, but
they are not relevant to this check.
NG Replace airbag sensor assembly.
OK

H01024AB0118AB0119R13006H01078H01205
"u
E1Tc ACC ON
or
DTC B0106/54 DLC1Airbag
Sensor
Assembly P Squib
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±257
4 Check P 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 front passenger airbag assembly connector.
(d) 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±223).
(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±223).
OK:
DTC B0106/54 is not output.
HINT:
Codes other than code B0106/54 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.