1996 TOYOTA T100 diagram

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ABS Contorl Relay
ABS ActuatorABS ECU
R/B
No.2Motor
Relay
Solenoid
Relay
ABS ECUDLC1
ABS
Battery
A16
A16
A16
A16
A16 A6
A6
A5
A4
A4 A4
A4 A5
A6 A6
A5
A5
A4 EA1
EA1
ID
MR
R−
SR
AST
MT R−B
G−B
R−W
R−Y
R−L W−B
W−B W
W W
W
W
R−L
W−R
LG
4
15
5 4
3
1
3
5 1
2
6
1 5 10
10 2
2
92
25
4
11
8
− DIAGNOSTICSANTI−LOCK BRAKE SYSTEM
DI−353
1996 TOYOTA T100 (RM449U)
DTC 51 ABS Pump Motor Lock
CIRCUIT DESCRIPTION
DTC No.DTC Detecting ConditionTrouble Area
51Pump motor is not operating normally during initial check.ABS pump motor
Fail safe function:
If trouble occurs in the ABS pump motor, the ECU cuts off current to the ABS control (solenoid) relay and
prohibits ABS control.
WIRING DIAGRAM
DI10Q−03

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ABS Contorl
Relay
ABS
ActuatorABS ECU Motor
Relay
Solenoid
Relay Battery
A5
A5EA1
ID
W−B W
W WW
EA1
A5A5
A5 A6
A6
A6
A4ABS
Actuator
ABS ECUABS ECUIG Switch
Integration
Relay
ABS
Warning
Light I15C10
C10
A16
1A
IE1
IE1B−YB−Y
LG
B−RB−R
B−RB−R
B−O
23 22 Short Pin 10
1
2
6
5
44 1 4
32
29
9
4
8
GAUGE
12
WA
5
24 DI−354
− DIAGNOSTICSANTI−LOCK BRAKE SYSTEM
1996 TOYOTA T100 (RM449U)
ABS Warning Light Circuit
CIRCUIT DESCRIPTION
If the ECU detects trouble, it lights the ABS warning light while at the same time prohibiting ABS control. At
this time, the ECU records a DTC in memory.
After removing the short pin of the DLC1, connect terminals Tc and E
1 of the DLC1 to make the ABS warning
light blink and output the DTC.
WIRING DIAGRAM
DI10S−03

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BRABS ECU
DLC1
Y−BY−B
EBIE1 A15
E1
3116
20
TcTc
AB0119S08097F00445
ON
E
1
Tc(−)
(+)
DI−358
− DIAGNOSTICSANTI−LOCK BRAKE SYSTEM
1996 TOYOTA T100 (RM449U)
Tc Terminal Circuit
CIRCUIT DESCRIPTION
Connecting terminals Tc and E1 of the DLC1 causes the ECU to display the DTC by flashing the ABS warning
light.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check voltage between terminals Tc and E1 of DLC1.
CHECK:
(a) Turn the ignition switch ON.
(b) Measure voltage between terminals Tc and E
1 of DLC1.
OK:
Voltage: 10 − 14 V
OK If ABS warning light does not blink even after Tc
and E
1 are connected, ECU may be defective.
NG
DI10U−03

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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

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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

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DI−379
1996 TOYOTA T100 (RM449U)
DTC 12 Short in Squib Circuit or Front Airbag
Sensor 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.
The front airbag sensor detects the deceleration force in a frontal collision and is located in the front fender
on the left and right sides.
For details of the function of each components, see page OPERATION on page RS−2.
DTC 12 is recorded when a B+ short is detected in the squib circuit or front airbag sensor circuit.
DTC No.DTC Detecting ConditionTrouble Area
12
Short circuit in squib wire harness (to B+)
Squib malfunction
Short circuit in front airbag sensor +S wire harness (to B+)
Open circuit in RH and LH front airbag sensor harness
Spiral cable malfunction
Center airbag sensor assembly malfunctionSteering wheel pad (D squib)
Front airbag sensor
Spiral cable
Center airbag sensor assembly
Wire harness
WIRING DIAGRAM
See page DI−373.
DI986−01

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D SquibSpiral
Cable
(+)D+ D−
(−)Airbag
Sensor
Assembly
← →
− DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI−385
1996 TOYOTA T100 (RM449U)
DTC 14 Open in D Squib Circuit
CIRCUIT DESCRIPTION
The D squib circuit consists of the center 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 components, see OPERATION 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
Center airbag sensor assembly malfunctionSteering wheel pad (D squib)
Spiral cable
Center airbag sensor assembly
Wire harness
WIRING DIAGRAM
See page DI−373.
INSPECTION PROCEDURE
1 Preparation (See step 1 on page DI−396)
2 Check D squib circuit.
PREPARATION:
(a) Disconnect center airbag sensor assembly connector.
(b) Using a service wire, connect D+ and D− on center airbag
sensor assembly side connector.
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 Ω
NG Go to step 5.
OK
DI987−01

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− DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1996 TOYOTA T100 (RM449U)
DTC 15 Open in Front Airbag Sensor Circuit
CIRCUIT DESCRIPTION
The front airbag sensor detects the deceleration force in a frontal collision and is located in the front fender
on the left and right sides.
For details of the function of each component, see OPERATION on page RS−2.
DTC 15 is recorded when an open is detected in the front airbag sensor circuit.
NOTICE:
The front airbag sensor connector is equipped with an electrical connection check mechanism for
the purpose of detecting an open in the front airbag sensor (See page RS−2). This mechanism is
constructed so that when the terminals of the front airbag sensor have been connected (when the
connector housing lock is in the locked condition), the connection detection pin on the wire harness
side connects with the terminals for diagnosis use on the sensor side. If the connector is not properly
connected, the diagnosis system may detect only a malfunction code, even through the SRS is func-
tioning normally. When connecting the front airbag sensor connector, make sure it is connected
properly. If DTC 15 is displayed after the front airbag sensor connector has been connected, check
again that it is properly connected.
DTC No.DTC Detecting ConditionTrouble Area
15
Open cirxuit in +S wire harness or −S wire harness of front
airbag sensor.
Front airbag sensor malfunction.
Malfunction of electrical connection check mechanism of
front airbag sensor
Center airbag sensor assembly malfunction.
Front airbag sensor
Center airbag sensor
Wire harness
WIRING DIAGRAM
See page DI−373.
INSPECTION PROCEDURE
1 Preparaiton (See step 1 on page DI−396)
2 Check front airbag sensor circuit (Measure resistance between terminals +SR
and +SL of center airbag sensor assembly connector and body ground.) (See
step 2 on page DI−373).
NG Go to step 8.
OK
DI0XV−02