fuse box TOYOTA T100 1996 Factory Service Manual

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F00006DLC1Short Pin
N09348
TOYOTA
hand−held tester
TOYOTA
brake−out−box ECU
A00778DLC1 E
1Tc
Ts DI−322
− DIAGNOSTICSANTI−LOCK BRAKE SYSTEM
1996 TOYOTA T100 (RM449U)
(c) Clear the DTC.
(1) Using SST, connect terminals Tc and E
1 of the
DLC1 and remove the short pin from the DLC1.
SST 09843−18020
(2) Turn the ignition switch ON.
(3) Clear the DTC stored in ECU by depressing the
brake pedal 8 or more times within 3 seconds.
(4) Check that the warning light shows the normal
code.
(5) Remove the SST from the terminals of the DLC1.
SST 09843−18020
(6) Connect the short pin to the DLC1.
HINT:
Cancellation can also be done by removing the ECU−B fuse,
but in this case, other memory systems will also be cancelled
out.
(d) Using TOYOTA brake−out−box and TOYOTA hand−held
tester, measure the ECU terminal value.
(1) Hook up the TOYOTA hand−held tester and
TOYOTA break−out−box to the vehicle.
(2) Read the ECU input/output values by following the
prompts on the tester screen.
HINT:
TOYOTA hand−held tester has a ”Snapshot” function. This re-
cords the measured values and is effective in the diagnosis of
intermittent problems.
Please refer to the TOYOTA hand−held tester/TOYOTA break−
out−box operator’s manual for further details.
2. SPEED SENSOR SIGNAL AND DECELERATION SEN-
SOR CHECK
(a) Check the speed sensor signal.
(1) Turn the ignition switch OFF.
(2) Using SST, connect terminals Ts and E
1 of the
DLC1.
SST 09843−18020
(3) Start the engine.

Downloaded from www.Manualslib.com manuals search engine F00359
Fuse Box
on J/B No.1
ECU−IG
4WD: Deceleration Sensor R/B
No.2IG SwitchABS ECU
BatteryW−B B−Y
AM1 ALT
IG1
GND
GND W−B
W−B
W
F7 14
6
IC
A15 IA3
W
W
BB
BA15
A15F75
3110
11
24 6
2
5
2
2
2
2 1
W
− DIAGNOSTICSANTI−LOCK BRAKE SYSTEM
DI−347
1996 TOYOTA T100 (RM449U)
DTC 41 IG Power Source Circuit
CIRCUIT DESCRIPTION
This is the power source for the ECU, hence the actuators.
DTC No.DTC Detecting ConditionTrouble Area
41
Vehicle speed is 3 km/h (1.9 mph) or more and voltage of
ECU terminal IG1 remains at more than 17 V or below 9.5
V for more than 10 sec.Battery
IC regulator
Open or short in power source circuit
ECU
Fail safe function:
If trouble occurs in the power source circuit, the ECU cuts off current to the ABS control (solenoid) relay and
prohibits ABS control.
WIRING DIAGRAM
DI10J−01

Downloaded from www.Manualslib.com manuals search engine A00777
J/B No.1
Fuse Box
ECU−IG Fuse
− DIAGNOSTICSANTI−LOCK BRAKE SYSTEM
DI−349
1996 TOYOTA T100 (RM449U)
4 Check ECU−IG fuse.
PREPARATION:
Remove the ECU−IG fuse from the J/B No.1.
CHECK:
Check continuity of ECU−IG fuse.
OK:
Continuity
NG Check for short in all harness and components
connected to ECU−IG fuse (See attached wiring
diagram).
OK
Check for open in harness and connector between ABS ECU and battery (See page IN−26).

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6
ECU−IGABS ECU
L−W
LG
L
W−B 2 3
Deceleration
SensorA15ABS ECU
GS1
GS2
GST
GGND 19
7
5
18 GS1
GS2
GST IG1
A15
A15
A15 1 A14
A14
A14 A144
A146 5
F7 F7B
B Fuse Box
on J/B No.1
IG Switch
GGND
− DIAGNOSTICSANTI−LOCK BRAKE SYSTEM
DI−351
1996 TOYOTA T100 (RM449U)
DTC 44 Deceleration Sensor Circuit
CIRCUIT DESCRIPTION
This sensor detects deceleration on the vehicle. The sensor signal is used in ABS control. If the sensor func-
tions abnormally, the ABS warning light comes on but the ABS still operates.
DTC No.DTC Detecting ConditionTrouble Area
44
Either of following 1 or 2 is detected:
1. An open or short is detected in circuit GS1 or GS2 for
1sec.
2. After the ignition is turned ON, test signal is output by
GST. During this time, a trouble signal is detected for 0.5
sec.
Deceleration sensor
Open or short in deceleration sensor circuit
ECU
WIRING DIAGRAM
DI10M−03

Downloaded from www.Manualslib.com manuals search engine BE4032
BE4033I00021
Normal Code
0.25 sec.
0.25 sec.
ON
OFF
ON
OFF
4 sec.1.5 sec. 0.5 sec.
2.5 sec.0.5 sec.1.5 sec.
Malfunction codes 11 and 21
Code 11 Code 21
N09348
TOYOTA hand−held tester
TOYOTA Break−out−box
N06038
ECU−B Fuse
− DIAGNOSTICSCRUISE CONTROL SYSTEM
DI−411
1996 TOYOTA T100 (RM449U)
HINT:
If the DTC is not output, inspect the Tc circuit (See page
DI−456).
As an example, the blinking patterns for codes; normal,
11 and 21 are shown in the illustration.
2. ECU TERMINAL VALUES MEASUREMENT BY USING
TOYOTA BREAK−OUT−BOX AND TOYOTA HAND−
HELD TESTER
(a) Hook up the TOYOTA break−out−box and TOYOTA
hand−held tester to the vehicle.
(b) Read the ECU input/output values by following the
prompts on the tester screen.
HINT:
TOYOTA hand−held tester has a ”Snapshot” function. This re-
cords the measured values and is effective in the diagnosis of
intermittent problems.
Please refer to the TOYOTA hand−held tester /TOYOTA
break−out−box operator’s manual for further details.
3. DTC CLEARANCE
(a) After completing repairs, the diagnostic trouble code re-
tained in memory can be cleared by removing the ECU−B
fuse for 10 seconds or more, with the ignition switch OFF.
(b) Check that the normal code is displayed after connecting
the fuse.