1997 TOYOTA SUPRA steering

R05901R14286
H07917
P squib
Spiral
CableAirbag Sensor
Assembly
D squib
D-D+
(-) (+)
DI-578
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
806 Author
: Date
:
1997 SUPRA (RM502U)
INSPECTION PROCEDURES
1 Preparation (See step 1 on page DI-595).
2 Check D squib circuit.
PREPARATION:
Release airbag activation prevention mechanism on airbag
sensor assembly side of airbag squib connector.
(See page DI-557)
CHECK:
For the connector (on the spiral cable side) between the spiral
cable and steering wheel pad, measure the resistance between
D
+ and D-.
OK:
Resistance: 1MW or Higher
NG Go to step 5.
OK

H03228
P squib
Spiral
Cable D squibAirbag Sensor
Assembly
ACC
ON
or
DLC1 Code 13
E
1Tc
DI-580
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
808 Author
: Date
:
1997 SUPRA (RM502U)
4 Check D squib.
PREPARATION:
(a) Turn the ignition switch to LOCK.
(b) Disconnect negative (-) terminal cable from the battery,
and wait at least 90 seconds.
(c) Connect the steering wheel pad connector.
(d) Connect negative (-) terminal cable to battery, and wait
at least 2 seconds.
CHECK:
(a) Turn the ignition switch to LOCK, and wait at least 20 se-
conds.
(b) Turn the ignition switch to ACC or ON, and wait at least
20 seconds.
(c) Clear malfunction code stored in memory.
(See page DI-557)
(d) Turn the ignition switch to LOCK, and wait at least 20 se-
conds.
(e) Turn the ignition switch to ACC or ON, and wait at least
20 seconds.
(f) Using SST, connect the terminals Tc and E
1 of DLC1.
SST 09843-18020
(g) Check DTC.
OK:
DTC 13 is not output.
HINT:
Codes other than code 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.

R05903R14286
H07918
P squib
Spiral
Cable D squibAirbag Sensor
Assembly
D
-D+
(-)
(+)
R05904R14286H03814
P squib
Spiral
Cable D squibAirbag Sensor
Assembly
(-)
(+)
D-D+
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-581
809 Author
: Date
:
1997 SUPRA (RM502U)
5 Check spiral cable.
PREPARATION:
(a) Disconnect the connector between airbag sensor assem-
bly and spiral cable.
(b) Release airbag activation prevention mechanism on air-
bag sensor assembly side of airbag squib connector (See
page DI-557).
CHECK:
For the connector (on the spiral cable side) between the spiral
cable and steering wheel pad, measure the resistance between
D
+ and D-.
OK:
Resistance: 1MW or Higher
NG Repair or replace spiral cable.
OK
6 Check harness between airbag sensor assembly and spiral cable.
PREPARATION:
Release airbag activation prevention mechanism on airbag
sensor assembly side of airbag squib connector (See page
DI-557).
CHECK:
For the connector (on the airbag sensor assembly side) be-
tween the spiral cable and airbag sensor assembly, 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.

R05901R14286
H07919
P squib
Spiral
CableAirbag Sensor
Assembly
D squib
D-D+
(-) (+)
DI-582
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
810 Author
: Date
:
1997 SUPRA (RM502U)
DTC 14 Open 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 FUNCTION OF COMPONENTS on page RS-2.
DTC 14 is recorded when an open is detected in the D squib circuit.
DTC No.DTC Detecting ConditionTrouble Area
14

Open circuit in D+
wire harness or D- wire harness 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
Refer to page DI-577 for the WIRING DIAGRAM.
INSPECTION PROCEDURES
1 Preparation (See step 1 on page DI-595).
2 Check D squib circuit.
CHECK:
For the connector (on the spiral cable side) between the spiral
cable and steering wheel pad, measure the resistance between
D
+ and D-.
OK:
Resistance: Below 1W
NG Go to step 5.
OK
DI4WN-01

R05895AB0069AB0118AB0119FI1391N19819H07920
P squibAirbag Sensor
Assembly
D squib
Spiral
Cable
ACC
ON
or
E
1
Tc DLC1
Code 14
D+D-
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-583
811 Author
: Date
:
1997 SUPRA (RM502U)
3 Check airbag sensor assembly.
PREPARATION:
(a) Connect the connector to airbag sensor assembly.
(b) Using a service wire, connect D
+ and D- on spiral cable
side of connector between spiral cable and steering
wheel pad.
(c) Connect negative (-) terminal cable to battery, and wait
at least 2 seconds.
CHECK:
(a) Turn the ignition switch to LOCK, and wait at least 20 se-
conds.
(b) Clear malfunction code stored in memory.
(See page DI-557)
(c) Turn the ignition switch to LOCK, and wait at least 20 se-
conds.
(d) Turn the ignition switch to ACC or ON, and wait at least
20 seconds.
(e) Using SST, connect the terminals Tc and E
1 of DLC1.
SST 09843-18020
(f) Check DTC.
OK:
DTC 14 is not output.
HINT:
Codes other than code 14 may be output at this time, but they
are not relevant to this check.
NG Replace airbag sensor assembly.
OK

H03231
P squib
Spiral
CableAirbag Sensor
Assembly
D squib
ACCON
or
E
1
DLC1
Code 14
Tc
DI-584
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
812 Author
: Date
:
1997 SUPRA (RM502U)
4 Check D squib.
PREPARATION:
(a) Turn the ignition switch to LOCK.
(b) Disconnect negative (-) terminal cable from the battery,
and wait at least 90 seconds.
(c) Connect the steering wheel pad connector.
(d) Connect negative (-) terminal cable to battery, and wait
at least 2 seconds.
CHECK:
(a) Turn the ignition switch to ACC or ON and wait at least 20
seconds.
(b) Clear malfunction code stored in memory.
(See page DI-557)
(c) Turn the ignition switch to LOCK, and wait at least 20 se-
conds.
(d) Turn the ignition switch to ACC or ON, and wait at least
20 seconds.
(e) Using SST, connect the terminals Tc and E
1 of DLC1.
SST 09843-18020
(f) Check DTC.
OK:
DTC 14 is not output.
HINT:
Codes other than code 14 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.

R05899R14286H07921
P squib
Spiral
CableAirbag Sensor
Assembly
D squib
D-D+
(-)(+)
R05904R14286H03814
P squib
Spiral
CableAirbag Sensor
Assembly
D squib
D+
(-) (+)D
-
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-585
813 Author
: Date
:
1997 SUPRA (RM502U)
5 Check spiral cable.
PREPARATION:
Disconnect the connector between airbag sensor assembly
and spiral cable.
CHECK:
For the connector (on the spiral cable side) between the spiral
cable and steering wheel pad, measure the resistance between
D
+ and D-.
OK:
Resistance: Below 1 W
NG Repair or replace spiral cable.
OK
6 Check harness between airbag sensor assembly and spiral cable.
CHECK:
For the connector (on the airbag sensor assembly side) be-
tween the airbag sensor assembly and spiral cable, measure
the resistance between D
+ and D-.
OK:
Resistance: Below 1W
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.

R05894 AB0117
H00001
P squibAirbag Sensor
Assembly
D squib
Spiral
Cable LOCK
AB0119
W02766H00041
Airbag Sensor Assembly
ON
ACC
IG2
(-)(+)
DI-596
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
824 Author
: Date
:
1997 SUPRA (RM502U)
INSPECTION PROCEDURES
1 Preparation.
PREPARATION:
(a) Disconnect negative (-) terminal cable from the battery,
and wait at least 90 seconds.
(b) Remove the steering wheel pad (See SR Section).
(c) Disconnect the connector of front passenger airbag as-
sembly (See page RS-21).
(d) DIsconnect the connector of airbag sensor assembly
(See page RS-33).
CAUTION:
Store the steering wheel pad with the front surface facing
upward.
2 Check source voltage.
PREPARATION:
(a) Connect negative (-) terminal cable to the battery.
(b) Turn the ignition switch ON.
CHECK:
Measure the voltage at IG2 or ACC on sensor and operate elec-
tric system. (defogger, wiper, headlight, heater blower, etc)
OK:
Voltage: 10 - 14 V
NG Check the harness between battery and airbag
sensor assembly, and check the battery and
charging system.
OK