1996 TOYOTA TERCEL airbag sensor

R09725Match Marks
IN-10
- INTRODUCTIONFOR ALL OF VEHICLES
10 Author
: Date
:
1996 TERCEL (RM440U)
(3) Even in cases of a minor collision where the SRS
does not deploy, the steering wheel pad (See page
RS-9) and front passenger airbag assembly (See
page RS-22) should be inspected.
(4) Never use SRS parts from another vehicle. When
replacing parts, replace them with new parts.
(5) Before repairs, remove the airbag sensor if shocks
are likely to be attached to the sensor during re-
pairs.
(6) Never disassemble and repair the airbag sensor as-
sembly, steering wheel pad or front passenger air-
bag.
(7) If the airbag sensor assembly, steering wheel pad
or front passenger airbag have been dropped, or if
there are cracks, dents or other defects in the case,
bracket or connector, replace them with new ones.
(8) Do not directly expose the airbag sensor assembly,
steering wheel pad or front passenger airbag to hot
air or flames.
(9) Use a volt/ohmmeter with high impedance (10 kW/V
minimum) for troubleshooting of the electrical cir-
cuit.
(10) Information labels are attached to the periphery of
the SRS components. Follow the instructions on the
notices.
(11) After work is completed, check the SRS warning
light for the supplemental restraint system (See
page DI-148).
(c) SPIRAL CABLE (in Combination Switch)
The steering wheel must be fitted correctly to the steering
column with the spiral cable at the neutral position, other-
wise cable disconnection and other troubles may result.
Refer to RS-19 of this manual concerning correct steer-
ing wheel installation.

- INTRODUCTIONFOR ALL OF VEHICLES
IN-13
13 Author
: Date
:
1996 TERCEL (RM440U)
(f) AIRBAG SENSOR ASSEMBLY
(1) Never reuse the airbag sensor assembly involved
in a collision when the SRS has deployed.
(2) The connectors to the airbag sensor assembly
should be connected or disconnected with the sen-
sor mounted on the floor. If the connectors are con-
nected or disconnected while the airbag sensor as-
sembly is not mounted to the floor, it could cause
undesired deployment of the supplemental re-
straint system.
(3) Work must be started after 90 seconds from the
time the ignition switch is turned to the ºLOCKº posi-
tion and the negative (-) terminal cable is discon-
nected from the battery, even if only loosing the set
bolts of the airbag sensor assembly.
(g) WIRE HARNESS AND CONNECTOR
The SRS wire harness is integrated with the instrument
panel wire harness assembly and floor wire harness as-
sembly. The wires for the SRS wire harness are encased
in a yellow corrugated tube. All the connectors for the sys-
tem are also a standard yellow color. If the SRS wire har-
ness becomes disconnected or the connector becomes
broken due to an accident, etc., repair or replace it as
shown on page RS-37.

PP313-01
- PREPARATIONSUPPLEMENTAL RESTRAINT SYSTEM
PP-71
1996 TERCEL (RM440U)
RECOMMENDED TOOLS
09042-00020Torx Socket T40 .Airbag sensor assembly
09082-00040TOYOTA Electrical Tester.

SS061-41
- SERVICE SPECIFICATIONSSUPPLEMENTAL RESTRAINT SYSTEM
SS-39
169 Author
: Date
:
1996 TERCEL (RM440U)
SUPPLEMENTAL RESTRAINT SYSTEM
TORQUE SPECIFICATION
Part tightenedN´mkgf´cmft´lbf
Steering wheel3435025
Steering wheel pad8.89078 in.´lbf
Front passenger airbag assembly1919514
Airbag sensor assembly2020014

N12151
DI95N-01
R13006
E1
Tc
AT0716
Normal Code
ON
OFF0.25
0.25
DI-148
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1996 TERCEL (RM440U)
PRE-CHECK
1. SRS WARNING LIGHT CHECK
(a) Turn the ignition switch to ACC or ON and check that the
SRS warning light lights up.
(b) Check that the SRS warning light goes out after approx.
6 seconds.
HINT:

When the ignition switch is at ACC or ON and the SRS
warning light remains on or flashes, the airbag sensor as-
sembly has detected a malfunction code.

If, after approx. 6 seconds have elapsed, the SRS warn-
ing light sometimes lights up or the SRS warning light
lights up even when the ignition switch is OFF, a short in
the SRS warning light circuit can be considered likely.
Proceed to ºSRS warning light system malfunctionº on
page DI-180, DI-182.
2. DTC CHECK (Using diagnosis check wire)
(a) Output the DTC.
(1) Turn the ignition switch to the ACC or ON position
and wait approx. 20 seconds.
(2) Using SST, connect terminals Tc and E1 of the
DLC1.
SST 09843-18020
NOTICE:
Never make a mistake with the terminal connection posi-
tion as this will cause a malfunction.
(b) Read the DTC.
Read the 2-digit DTC as indicated by the number of times
the SRS warning light blinks. As an example, the blinking
patterns, normal, 11 and 31 are as shown on the illustra-
tion.

Normal code indication.
The light will blink 2 times per second.

Malfunction code indication.
The first blinking output indicates the first digit
of a 2-digit DTC. After a 1.5 second pause,
the second blinking output will indicate the
second digit.

DI4M7-02
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-151
1996 TERCEL (RM440U)
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
Nl
System normal-OFFNormal
(DI-177)
Source Voltage drop
Battery

Airbag sensor assemblyON
11
(DI-155)

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-162)

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
14
(DI-168)

Open in D squib circuit
Steering wheel pad (D squib)

Spiral cable

Airbag sensor assembly

Wire harness
ON
31
(DI-172)
Airbag sensor assembly malfunction
Airbag sensor assemblyON
54
(DI-174)
Open in P squib circuit
Front 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
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.

DI4M8-01
N12263
Front Passenger
Airbag Assembly Steering Wheel Pad
(With Airbag)
Spiral Cable
Airbag Sensor Assembly
Instrument Panel
Junction BlockSRS Warning Light
DI-152
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1996 TERCEL (RM440U)
PARTS LOCATION

DI4MB-02
R15075
D squib (w/o Front Passenger Airbag)
1
Spiral
2
D
-
D+
Airbag Sensor Assembly
Cable
B
4
3 (w/ Front Passenger Airbag)
D squib
Spiral
Cable
1
2W
P squib1
22
1 D
-
D+2
1
P
-
P+
B
B W
W
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-155
1996 TERCEL (RM440U)
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. If 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 when ground short is detected in the squib circuit.
DTC No.DTC Detection 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