1996 TOYOTA T100 sensor

Downloaded from www.Manualslib.com manuals search engine BE6653R15784F00459
ON
GS2
GST (−)
GS1 (+)
F00012
IG SW
GSTON
OFF
12 V
0 V1.5 sec.
0.5 sec.
DI−352
− DIAGNOSTICSANTI−LOCK BRAKE SYSTEM
1996 TOYOTA T100 (RM449U)
INSPECTION PROCEDURE
1 Check for open and short in harness and connector between Deceleration sen-
sor and ECU (See page IN−26).
NG Repair or replace harness or connector.
OK
2 Check voltage between terminals GS1, GS2, GST of ABS ECU and body ground.
PREPARATION:
(a) Remove the ABS ECU with the connectors still con-
nected.
(b) Disconnect the deceleration sensor connector.
(c) Turn the ignition switch ON.
CHECK:
Measure voltage between terminals GS1, GS2, GST of ECU
and Body ground.
OK:
Voltage:
GS1, GS2: about 5 V
GST: As shown below
NG Check and replace ABS ECU.
OK
Check and replace deceleration sensor.

Downloaded from www.Manualslib.com manuals search engine F00363
BRABS ECU
DLC1
R−YR−Y
EBIE1 A15
E1
3161
6
TsTs
AB0119S08096F00446
ON
E
1
Ts(−)
(+)
DI−360
− DIAGNOSTICSANTI−LOCK BRAKE SYSTEM
1996 TOYOTA T100 (RM449U)
Ts Terminal Circuit
CIRCUIT DESCRIPTION
The sensor check circuit detects abnormalities in the speed sensor signal which cannot be detected with
the DTC check.
Connecting terminals Ts and E
1 of the DLC1 in the engine compartment starts the check.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check voltage between terminals Ts and E1 of DLC1.
CHECK:
(a) Turn the ignition switch ON.
(b) Measure voltage between terminals Ts and E
1 of DLC1.
OK:
Voltage: 10 − 14 V
OK If ABS warning light does not blink even after Ts
and E
1 are connected, ECU may be defective.
NG
DI10W−03

Downloaded from www.Manualslib.com manuals search engine R07710R07711H00318
w/ Tachometer
w/o Tachometer
DI0XJ−02
S08098
E1 Tc
AT0716
Normal Code
ON
OFF0.25
0.25
− DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI−365
1996 TOYOTA T100 (RM449U)
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 ”SRS warning light system malfunction” on
page DI−398, DI−400.
2. DTC CHECK (Using diagnosis check wire)
(a) Output the DTC.
(1) Turn the ignition switch to ACC or ON position and
wait approx. 20 seconds.
(2) Using SST, connect terminals Tc and E1 of the
DLC1.
SST 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.

Downloaded from www.Manualslib.com manuals search engine W03146 W03147
AB0130 AB0045AB0046AB0027
H00320
Airbag Sensor Assembly Connector (Connector ”1”)
Spiral Cable Connector (Connector ”2”)
Short SpringShort Spring
Before Release
After Release After Release Before Release
PaperPaper
Center
Airbag
Sensor
AssemblyJ/B No.1
Squib
RH and LH Front Airbag Sensors Spiral Cable Connector ”1” Connector ”2”
DI−368
− DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1996 TOYOTA T100 (RM449U)
CAUTION:
Never release the airbag activation prevention mechanism
on the steering wheel pad connector.
NOTICE:
Do not release the airbag activation prevention mech-
anism unless specifically directed by the trouble-
shooting procedure.
If the paper inserted is too thick the terminal and short
spring may be damaged, so always use paper the
same thickness as the male terminal.

Downloaded from www.Manualslib.com manuals search engine DI0XK−02
− DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI−369
1996 TOYOTA T100 (RM449U)
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
Normal
(DI−396)System normal−OFF
Source voltage dropBattery
Center airbag sensor assemblyON
11
(DI−373)
Short in squib circuit or front airbag
sensor circuit (to ground)Steering wheel pad (D squib)
Front airbag sensor
Spiral cable
Center airbag sensor assembly
Wire harness
ON
12
(DI−379)
Short in squib circuit or front airbag
sensor circuit (to B+)Steering wheel pad (D squib)
Front airbag sensor
Spiral cable
Center airbag sensor assembly
Wire harness
ON
14
(DI−385)
Open in D squib circuitSteering wheel pad (D squib)
Spiral cable
Center airbag sensor assembly
Wire harness
ON
15
(DI−390)Open in front airbag sensor circuitFront airbag sensor
Center airbag sensor assembly
Wire harness
ON
31
(DI−394)
Center airbag sensor assembly
malfunctionCenter airbag sensor assembly
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 center airbag sensor assembly and if the power
source voltage returns to normal, approx. 10 seconds the SRS warning light will automatically go out.
When 2 or more codes are indicated, the lowest numbered code will apper first.
If a code not listed on the chart is displayed, the center airbag sensor assembly is faulty.

Downloaded from www.Manualslib.com manuals search engine DI0XL−02
R12499
Front Airbag Sensor RH
Front Airbag Sensor LH
Junction Block No.1
Center Airbag Sensor Assembly Spiral CableSRS Warning Light
Steering Wheel Pad
(with Airbag)
DI−370
− DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1996 TOYOTA T100 (RM449U)
PARTS LOCATION

Downloaded from www.Manualslib.com manuals search engine DI7HL−02
W02759
43 21
10 9 8 7 56 B A
− DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI−371
1996 TOYOTA T100 (RM449U)
TERMINALS OF ECU
No.SymbolTerminal Name
A−Electrical Connection Check Mechanism
B−Electrical Connection Check Mechanism
1LASRS Warning Light
2D−Squib  (Driver)
3D+Squib  (Driver)
4TCDiagnosis
5E2Ground
6E1Ground
7+SRFront Airbag Sensor RH 
8+SLFront Airbag Sensor LH 
9IG2Power Source (IGN Fuse)
10ACCPower Source (CIG Fuse)

Downloaded from www.Manualslib.com manuals search engine DI0XO−02
R15205
Center Airbag Sensor Assembly
Front Airbag Sensor RH
Front Airbag Sensor LH D Squib
Spiral
CableW−B
W−B +SR
+SLB
L B−L W
D+
D−1
2
1
2 13
14 1
27
6
− DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI−373
1996 TOYOTA T100 (RM449U)
CIRCUIT INSPECTION
DTC 11 Short in Squib Circuit (to Ground)
CIRCUIT DESCRIPTION
The squib circuit consists of the center airbag sensor assembly, spiral cable and steering wheel pad. If
causes the SRS to deploy when the SRS deployment conditions are satisfied.
The front airbag sensor detects the deceleration force in a frontal collision and is located in the front fender
apron on the left and right sides.
For details of the function of each component, see OPERATION on page RS−2.
DTC 11 is recorded when ground short is detected in the squib circuit or front airbag sensor circuit.
DTC No.DTC Detecting ConditionTrouble Area
11
Short circuit in squib wire harness (to ground)
Squib malfunction
Short circuit in front airbag sensor +S wire harness
(to ground)
Front airbag snesor malfunction
Spiral cable malfunction
Center airbag sensor assembly malfunction
Steering wheel pad (D squib)
Front airbag sensor
Spiral cable
Center airbag sensor assembly
Wire harness
WIRING DIAGRAM