TOYOTA CAMRY 1999 Service Repair Manual

DI1AZ±09
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±229
DIAGNOSTIC TROUBLE CODE CHART
If a malfunction code is displayed during the DTC check, check the circuit listed for that code in the table
below (Proceed to the page given for that circuit.).
DTC No.
(See Page)Detection ItemTrouble AreaSRS
Warning Light
B0100/13
(DI±234)

Short in D squib circuit
Steering wheel pad (squib)

Spiral cable

Airbag sensor assembly

Wire harness
ON
B0101/14
(DI±239)

Open in D squib circuit
Steering wheel pad (squib)

Spiral cable

Airbag sensor assembly

Wire harness
ON
B0102/11
(DI±243)

Short in D squib circuit (to Ground)
Steering wheel pad (squib)

Spiral cable

Airbag sensor assembly

Wire harness
ON
B0103/12
(DI±247)

Short in D squib circuit (to B+)
Steering wheel pad (squib)

Spiral cable

Airbag sensor assembly

Wire harness
ON
B0105/53
(DI±251)
Short in P squib circuit
Front passenger airbag assembly (squib)

Airbag sensor assembly

Wire harness
ON
B0106/54
(DI±255)
Open in P squib circuit
Front passenger airbag assembly (squib)

Airbag sensor assembly

Wire harness
ON
B0107/51
(DI±258)
Short in P squib circuit (to Ground)
Front passenger airbag assembly (squib)

Airbag sensor assembly

Wire harness
ON
B0108/52
(DI±261)
Short in P squib circuit (to B+)
Front passenger airbag assembly (squib)

Airbag sensor assembly

Wire harness
ON
B0130/63
(DI±264)
Short in P/T squib (RH) circuit
Seat belt pretensioner RH (squib)

Airbag sensor assembly

Wire harness
Blink
B0131/64
(DI±268)
Open in P/T squib (RH) circuit
Seat belt pretensioner RH (squib)

Airbag sensor assembly

Wire harness
Blink
B0132/61
(DI±271)
Short in P/T squib (RH) circuit
(to Ground)
Seat belt pretensioner RH (squib)

Airbag sensor assembly

Wire harness
Blink
B0133/62
(DI±274)
Short in P/T squib (RH) circuit
(to B+)
Seat belt pretensioner RH (squib)

Airbag sensor assembly

Wire harness
Blink
B0135/73
(DI±277)
Short in P/T squib (LH) circuit
Seat belt pretensioner LH (squib)

Airbag sensor assembly

Wire harness
Blink
B0136/74
(DI±281)
Open in P/T squib (LH) circuit
Seat belt pretensioner LH (squib)

Airbag sensor assembly

Wire harness
Blink

DI±230
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DTC No.
(See Page)
Detection ItemTrouble AreaSRS
Warning Light
B0137/71
(DI±284)
Short in P/T squib (LH) circuit
(to Ground)
Seat belt pretensioner LH (squib)

Airbag sensor assembly

Wire harness
Blink
B0138/72
(DI±287)
Short in P/T squib (LH) circuit
(to B+)
Seat belt pretensioner LH (squib)

Airbag sensor assembly

Wire harness
Blink
B1100/31
(DI±290)
Airbag sensor assembly malfunction
Airbag sensor assemblyON
B1156/B1157/
15
(DI±292)
Front airbag sensor (RH) malfunction
Front airbag sensor (RH)

Wire harness

Engine room main wire harness

Airbag sensor assembly
ON
B1158/B1159/
16
(DI±300)
Front airbag sensor (LH) malfunction
Front airbag sensor (LH)

Wire harness

Airbag sensor assembly
ON
Nl
System normal±OFFNormal
(DI±305)
Voltage source drop
Battery

Airbag sensor assemblyON
HINT:

When the SRS warning light remains lit up and the DTC is the normal code, this means a voltage source
drops.
This malfunction is not stored in memory by the airbag sensor assembly and if the power source volt-
age returns to normal, the SRS warning light will automatically go out.

When 2 or more codes are indicated, the codes will be displayed in numeral order starting from the
lowest numbered code.

If a code not listed on the chart is displayed, the airbag sensor assembly is faulty.

DI1B0±10
H10307
Combination Meter
(Warning Light)Steering Wheel Pad
(with Airbag)
Airbag Sensor AssemblyFront Passenger
Airbag Assembly
Seat Belt
Pretensioner (LH)Seat Belt
Pretensioner (RH) Front Airbag
Sensor (LH)Front Airbag Sensor (RH)
Spiral Cable
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±231
PARTS LOCATION

DI1B1±15
H01357
C5
C4C6
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 DI±232
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
TERMINALS OF ECU
No.SymbolTerminal Name
A±Electrical Connector Check Mechanism
B±Electrical Connector Check Mechanism
C5 ± 3LASRS Warning Light
C5 ± 4GSWEFI ECU
C5 ± 5IG2Power Source (IGN Fuse)
C5 ± 6ACCPower Source (CIG Fuse)
C5 ± 9SR+Front Airbag Sensor (RH)
C5 ± 10P+Squib (Passenger)
C5 ± 11P±Squib (Passenger)
C5 ± 12SILDiagnosis
C5 ± 13D±Squib (Driver)
C5 ± 14D+Squib (Driver)
C5 ± 15SL+Front Airbag Sensor (LH)
C5 ± 19TcDiagnosis
C5 ± 20SR±Front Airbag Sensor (RH)
C5 ± 26SL±Front Airbag Sensor (LH)
C5 ± 27E1Ground
C5 ± 28E2Ground
C4 ± 1PL±Squib (Seat Belt Pretensioner, LH)
C4 ± 2PL+Squib (Seat Belt Pretensioner, LH)
C6 ± 5PR+Squib (Seat Belt Pretensioner, RH)
C6 ± 6PR±Squib (Seat Belt Pretensioner, RH)

DI164±25
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±233
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 308
SRS 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±308

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±308

DTC is not displayed.

SRS warning light is always lit up at the time of DTC check pro-
cedure.
Tc terminal circuitDI±313

DTC is displayed without Tc and E1 terminal connection.

DI18Q±15
H01451
Y±B
D+ C5 14Airbag Sensor Assembly
13
C5
D± Y 1
2
Spiral
Cable D Squib DI±234
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
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 Pub. No. RM654U 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 malfunction
Steering wheel pad (D squib)

Spiral cable

Airbag sensor assembly

Wire harness
WIRING DIAGRAM

R14286H01001H01134
D SquibSpiral
Cable
Airbag
Sensor
Assembly
D+
(±) (+)D±
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±235
INSPECTION PROCEDURE
1 Prepare for inspection (See step 1 on page DI±305).
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±223).
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

FI1390AB0118
R13006AB0119H01002H07478
D SquibSpiral
Cable
Airbag
Sensor
Assembly
E1TcON
or
DTC B0100/13
DLC1"u
ACC
DI±236
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
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 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

AB0118
R13006AB0119FI1390
H01003H01136
D SquibSpiral
CableAirbag
Sensor
Assembly
E1 TcACC ON
or
DTC B0100/13
DLC1
" u
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI±237
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±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 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.

R14286H01000H01137
D SquibSpiral
Cable
Airbag
Sensor
Assembly
D+ u"
(±) (+)D±
R14286H01004H01138
D SquibSpiral
Cable
Airbag
Sensor
Assembly
D+
(±) (+)D±
DI±238
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
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±223).
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±223).
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.