Page 851 of 1807
DI4WG-01
DI-560
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
788 Author: Date:
1997 SUPRA (RM502U)
DIAGNOSTIC TROUBLE CODE CHART
DTC No.
(See Page)Detection ItemTrouble AreaSRS
Warning Light
(N l)System normal-OFF(Normal)
(DI-595)Source voltage dropBattery
Airbag sensor assemblyON
11
(DI-564)
Short in squib circuit (to ground)Steering wheel pad (D squib)
Front passenger airbag assembly (P squib)
Spiral cable
Airbag sensor assembly
Wire harness
ON
12
(DI-571)
Short in squib circuit (to B+)Steering wheel pad (D squib)
Front passenger airbag assembly (P squib)
Spiral cable
Airbag sensor assembly
Wire harness
ON
13
(DI-577)
Short in D squib circuitSteering wheel pad (D squib)
Spiral cable
Airbag sensor assembly
Wire harness
ON
14
(DI-582)
Open in D squib circuitSteering wheel pad (D squib)
Spiral cable
Airbag sensor assembly
Wire harness
ON
31
(DI-586)Airbag sensor assembly malfunctionAirbag sensor assemblyON
53
(DI-588)Short in P squib circuitFront passenger airbag assembly (P squib)
Airbag sensor assembly
Wire harness
ON
54
(DI-592)Open in P squib circuitFront passenger airbag assembly (P squib)
Airbag sensor assembly
Wire harness
ON
HINT:
When the SRS warning light remains lit up and the DTC is the normal code, this means a source voltage
drop.
This malfunction is not stored in memory by the airbag sensor assembly and if the power source volt-
age returns to normal, after approx. 10 seconds 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.
Page 852 of 1807
DI4WH-01
W02646
SRS Waring Light
(Telltale Light RH)
Front Passenger
Airbag Assembly
Steering Wheel Pad
(with Airbag)
Spiral Cable
Airbag Sensor Assembly
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-561
789 Author: Date:
1997 SUPRA (RM502U)
PARTS LOCATION
Page 855 of 1807
DI4WK-01
W01021
P squib
D squib
A34
A34
A34
A34L
Y
R
WAirbag Sensor
Assembly
P+3
2
7
6 1
2
1
2D
+
D-
P-
Spiral
Cable
DI-564
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
792 Author: Date:
1997 SUPRA (RM502U)
CIRCUIT INSPECTION
DTC 11 Short in Squib Circuit (to Ground)
CIRCUIT DESCRIPTION
The squib circuit consists of the airbag sensor assembly, spiral cable, steering wheel pad and front passen-
ger airbag assembly. It causes the SRS to deploy when the SRS deployment conditions are satisfied.
For details of the function of each component, see FUNCTION OF COMPONENTS on page RS-2.
DTC 11 is recorded a when ground short is detected in the squib circuit.
DTC No.DTC Detecting ConditionTrouble Area
11
Short circuit in squib wire harness (to ground).
Squib malfunction.
Spiral cable malfunction.
Airbag sensor assembly malfunction.Steering wheel pad (D squib)
Front passenger airbag assembly (P squib)
Spiral cable
Airbag sensor assembly
Wire harness
WIRING DIAGRAM
Page 856 of 1807
R05894R14301H07909
P squibAirbag Sensor
Assembly
D squib
D
+
Spiral
Cable
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-565
793 Author: Date:
1997 SUPRA (RM502U)
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 body ground.
OK:
Resistance: 1 MW or higher
NG Go to step 7.
OK
Page 858 of 1807
AB0069R05902AB0118AB0119AB0057
AB0069
N19819H07911
P squibAirbag Sensor
Assembly
D squibSpiral
Cable
ACC
ON
or
E
1Tc DLC1
Code 11
P+P-
D+D-
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-567
795 Author: Date:
1997 SUPRA (RM502U)
4 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) Using a service wire, connect P
+ and P- on airbag sensor
assembly side of connector between airbag sensor as-
sembly and front passenger airbag assembly.
(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 11 is not output.
HINT:
Codes other than code 11 may be output at this time, but they
are not relevant to this check.
NG Replace airbag sensor assembly.
OK
Page 859 of 1807
H03221
P squibAirbag Sensor
Assembly
D squib
Spiral
Cable
ACC
ON
E
1Tc DLC1 Code 11or
DI-568
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
796 Author: Date:
1997 SUPRA (RM502U)
5 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 11 is not output.
HINT:
Codes other than code 11 may be output at this time, but they
are not relevant to this check.
NG Replace steering wheel pad.
OK
Page 861 of 1807
R05899R14301H07912
P squib
Spiral
CableAirbag Sensor
Assembly
D squib
D+
DI-570
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
798 Author: Date:
1997 SUPRA (RM502U)
7 Check spiral cable.
PREPARATION:
Disconnect the connector between airbag sensor assembly
and spiral cable.
CHECK:
Measure the resistance between D+ on spiral cable side of con-
nector between spiral cable and steering wheel pad and body
ground.
OK:
Resistance: 1 MW or higher
NG Repair or replace spiral cable.
OK
Repair or replace harness or connector be-
tween airbag sensor assembly and spiral
cable.
Page 862 of 1807
AB0119R05901R14288H07913
P squib
Spiral
CableAirbag Sensor
Assembly
D squib
ON
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-571
799 Author: Date:
1997 SUPRA (RM502U)
DTC 12 Short in Squib Circuit (to B+)
CIRCUIT DESCRIPTION
The squib circuit consists of the airbag sensor assembly, spiral cable, steering wheel pad and front passen-
ger airbag assembly. It causes the SRS to deploy when the SRS deployment conditions are satisfied.
For details of the function of each component, see FUNCTION OF COMPONENTS on page RS-2.
DTC 12 is recorded when a B+ short is detected in the squib circuit.
DTC No.DTC Detecting ConditionTrouble Area
12
Short circuit in squib wire harness (to B+).
Squib malfunction.
Spiral cable malfunction.
Airbag sensor assembly malfunction.Steering wheel pad (D squib)
Front passenger airbag assembly (P squib)
Spiral cable
Airbag sensor assembly
Wire harness
WIRING DIAGRAM
Refer to page DI-564 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 voltage between D
+
and body ground.
OK:
Voltage: 0 V
NG Go to step 7.
OK
DI4WL-01
