brake sensor TOYOTA T100 1996 Factory Service Manual

Downloaded from www.Manualslib.com manuals search engine DIAGNOSTIC TROUBLE CODE CHECK PROCEDURE
Diagnostic Trouble
Code Check (Make a
note of and then clear)Confirmation
of SymptomsDiagnostic Trouble
Code CheckProblem Condition
Diagnostic Trouble
Code DisplayProblem symptoms
existSame diagnostic
trouble code is
displayedProblem is still occurring in the diagnostic
circuit.
Normal code is
displayedThe problem is still occurring in a place
other than in the diagnostic circuit.
(The diagnostic trouble code displayed
first is either for a past problem or it is a
secondary problem.)
No problem
symptoms existThe problem occurred in the diagnostic
circuit in the past.
Normal Code DisplayProblem symptoms
existNormal code is
displayedThe problem is still occurring in a place
other than in the diagnostic circuit.
No problem
symptoms existNormal code is
displayedThe problem occurred in a place other
than in the diagnostic circuit in the past.
IN−18− INTRODUCTIONHOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS
1996 TOYOTA T100 (RM449U)
2. SYMPTOM CONFIRMATION AND DIAGNOSTIC TROUBLE CODE CHECK
The diagnostic system in the TOYOTA T100 fulfills various functions. The first function is the Diagnostic
Trouble Code Check in which a malfunction in the signal circuits to the ECU is stored in code in the ECU
memory at the time of occurrence, to be output by the technician during troubleshooting. Another function
is the Input Signal Check which checks if the signals from various switches are sent to the ECU correctly.
By using these check functions, the problem areas can be narrowed down quickly and troubleshooting can
be performed effectively. Diagnostic functions are incorporated in the following systems in the TOYOTA
T100.
SystemDiagnostic Trouble
Code CheckInput Signal Check
(Sensor Check)Other Diagnosis
Function
Engine (3RZ−FE, 5VZ−FE)
Automatic Transmission
Anti−Lock Brake system
Supplemental Restraint System
Cruise Control (with Test Mode)
 (with Test Mode)






Cancel Signal
Check
In diagnostic trouble code check, it is very important to determine whether the problem indicated by the diag-
nostic trouble code is still occurring or occurred in the past but returned to normal at present. In addition,
it must be checked in the problem symptom check whether the malfunction indicated by the diagnostic
trouble code is directly related to the problem symptom or not. For this reason, the diagnostic trouble codes
should be checked before and after the symptom confirmation to determine the current conditions, as shown
in the table below. If this is not done, it may, depending on the case, result in unnecessary troubleshooting
for normally operating systems, thus making it more difficult to locate the problem, or in repairs not pertinent
to the problem. Therefore, always follow the procedure in correct order and perform the diagnostic trouble
code check.

Downloaded from www.Manualslib.com manuals search engine SS083−02
− SERVICE SPECIFICATIONSSUSPENSION AND AXLE
SS−67
1996 TOYOTA T100 (RM449U)
TORQUE SPECIFICATION
Part tightenedN·mkgf·cmft·lbf
Front (2WD)
Tie rod end lock nut5657041
Steering knuckle x Upper ball joint1081,10080
Steering knuckle x Lower ball joint1421,450105
Steering knuckle x Brake caliper1081,10080
Steering knuckle x Steering knuckle arm1831,870135
Dust cover x Steering knuckle1919514
Disc x Axle hub6465047
Upper suspension arm x Upper ball joint3132023
Lower suspension arm x Lower ball joint7576055
Torque arm x Lower suspension arm4950036
Shock absorber x Frame2525018
Lower suspension arm x Shock absorber1818513
Lower suspension arm x Stabilizer bar131309
Lower suspension arm shaft nut2062,100152
Upper suspension arm shaft x Frame9698071
Upper suspension arm shaft x Upper suspension arm1261,28093
Lower ball joint x Strut bar7576055
Strut bar x Frame1231,25090
Stabilizer bar link set nut131309
Stabilizer bar bracket x Frame3030622
Hub nut1031,05076
ABS speed sensor x Steering knuckle8.08271 in.·lbf
ABS Speed sensor wire harness x Upper suspension arm5.05144 in.·lbf
Front (4WD)
Knuckle stopper bolt lock nut4748035
Tie rod clamp bolt2222516
Steering knuckle x Upper ball joint1421,450105
Steering knuckle x Lower ball joint5859043
Steering knuckle x Brake caliper1231,25090
Flange x Axle hub3131523
Flange x Front drive shaft1818513
Axle hub bearing lock nut4748035
Oil seal x Dust cover1818513
Upper suspension arm x Upper ball joint3334025
Lower suspension arm x Lower ball joint1421,450105
Steering knuckle arm x Steering knuckle1831,870135
Upper suspension arm x Torque arm8789064
Upper suspension arm shaft lock nut2262,300166
Shock absorber x Frame2525018
Lower suspension arm x Shock absorber1371,400101
Lower suspension arm x Stabilizer bar2526019
Stabilizer bar bracket x Frame2930022

Downloaded from www.Manualslib.com manuals search engine SS−68
− SERVICE SPECIFICATIONSSUSPENSION AND AXLE
1996 TOYOTA T100 (RM449U)Part tightened
N·mkgf·cmft·lbf
Front drive shaft x Side gear shaft8384561
Lower suspension arm x Frame1962,000145
Upper suspension arm shaft x Frame1781,810131
Hub nut1031,05076
ABS speed sensor x Steering knuckle8.08271 in.·lbf
ABS speed sensor wire harness5.05144 in.·lbf
Companion flange x Front differential assembly1081,10080
Drain plug4950036
Filler plug3940029
Crossmember x Frame1261,28093
Front mounting bolt1471,500108
Rear mounting bolt1671,700123
Actuator x Clutch case cover2121015
Screw plug x Clutch case cover2020014
A.D.D. indicator switch x Clutch case cover4041030
Carrier cover x Oil deflector7.47565 in.·lbf
Ring gear x Differential case9798571
Differential carrier x Bearing cap7880058
Clutch case x Tube7880058
Clutch case x Differential carrier78800500
Differential x Front propeller shaft7475054
Clutch case cover x Clutch case2121015
Differential carrier cover x Differential carrier4747534
Tube x Bearing retainer121209
Rear
Ring gear x Differential case1251,27092
Bearing cap x Differential carrier11 31,15083
Differential carrier x Axle housing7374054
Rear axle housing x Rear brake assembly6970051
Rear shock absorber x Spring seat2626019
Rear shock absorber x Frame2626019
U−bolt x Spring seat1321,35097
Shackle pin x Leaf spring9193067
Differential x Propeller shaft7678056
Hanger pin x Leaf spring9193067
Hanger pin lock bolt2626019
Leaf spring center bolt4445033
Hub nut1031,05076
Spring bumper seat set bolt2930022
ABS speed sensor x Rear axle housing8.08271 in.·lbf
Brake line1515511
Parking brake set bolt2526019
Drain plug4950036
Filler plug3940029

Downloaded from www.Manualslib.com manuals search engine SS085−01
SS−70
− SERVICE SPECIFICATIONSBRAKE
1996 TOYOTA T100 (RM449U)
TORQUE SPECIFICATION
Part tightenedN·mkgf·cmft·lbf
Master cylinder x Piston stopper bolt101007
Master cylinder x Reservoir1.717.515.2 in.·lbf
Master cylinder x Brake booster131309
Brake line union nut1515511
Brake booster clevis lock nut2526019
Brake booster x Pedal bracket131309
Front disc brake caliper installation bolt 2WD 1.0 ton3940029
2WD 0.5 ton3637027
4WD1231,25090
Bleeder plug1111 08
Front disc brake torque plate x Steering knuckle 2WD1081,10080
Front disc x Front axle hub6465047
Front disc brake caliper x Flexible hose1515511
Rear drum brake wheel cylinder x Backing plate101007
Parking brake bellcrank bracket x Backing plate131309
LSP & BV installation nut131309
LSP & BV x Load Sensing Spring Assembly1818513
Load Sensing Spring Assembly x Shackle No.11818513
Shackle No.1 x Shackle No.22525018
Shackle No.2 x Shackle Bracket131309
LSP & BV x Frame2930011
ABS actuator x ABS actuator bracket5.45548 in.·lbf
ABS actuator bracket x Body1919514
Speed sensor installation bolt8.08271 in.·lbf
Front speed sensor wire harness clamp5.05144 in.·lbf
Rear speed sensor wire harness clamp131309

Downloaded from www.Manualslib.com manuals search engine SS−78
− SERVICE SPECIFICATIONSBODY ELECTRICAL
252 Author: Date:
1996 TOYOTA T100 (RM449U)B − C
Approx. 55.0 Ω
FUEL SENDER GAUGE
Float position mm (in.)Resistance (Ω)
F: Approx. 95 mmApprox. 3.0 Ω
1/2: Approx. 188.0 mmApprox. 32.5 Ω
E: Approx. 283.0 mmApprox. 110.0 Ω
ENGINE COOLANT TEMPERATURE RECEIVER GAUGE (w/ Tachometer)Resistance (Ω)
A − BApprox. 150.0 Ω
A − CApprox. 54.0 Ω
B − CApprox. 138.0 Ω
ENGINE COOLANT TEMPERATURE RECEIVER GAUGE (w/ o Tachometer)
A − BApprox. 25.0 Ω
OIL PRESSURE RECEIVER GAUGE
A − BApprox. 25.0 Ω
DOOR LOCK CONTROL RELAY (Wire Harness Side)
2 − Ground (Constant)Battery positive voltage
8 − Ground (Ignition Switch LOCK or ACC)No voltage
8 − Ground (Ignition Switch ON)Battery positive voltage
13 − Ground (Key unlock warning switch OFF (Ignition key removed))No voltage
13 − Ground (Key unlock warning switch ON (Ignition key set))Battery positive voltage
CRUISE CONTROL ECU (wire harness side)
24 − 26 (constant)Approx. 2.0 kΩ
25 − 26 (Actuator arm turned)Resistance change even
10 − Ground (Brake pedal position: Released)Approx. 38.0 Ω
10 − Ground (Brake pedal position: Depressed)No continuity
CRUISE CONTROL SWITCH
18 − Ground (Control switch position: OFF)No continuity
18 − Ground (Control switch position: RESUME/ACCEL)Approx. 68.0 Ω
18 − Ground (Control switch position: SET/COAST)Approx. 198.0 Ω
18 − Ground (Control switch position: CANCEL)Approx. 418.0 Ω
14 − Ground (Ignition switch position: LOCK or ACC)No voltage
14 − Ground (Ignition switch position: ON)Battery positive voltage
15 − Ground (Constant)Battery positive voltage
1 − Ground (Constant)Battery positive voltage
16 − Ground (Brake pedal position: Released)No voltage
16 − Ground (Brake pedal position: Depressed)Battery positive voltage
20 − Ground (With ignition switch ON, Speedsensor shaft turned)Valtage changes repeatedly
CRUISE CONTROL ACTUATOR
1 − 3Approx. 2.0 kΩ
2 − 3 (The arm is moving from the closed to open position)Approx. 0.5 to 1.8 kΩ
ANTENNA MOTOR CONTROL RELAY (Wire harness side)
3 − Ground (Constant)Battery positive voltage
5 − Ground (Ignition Switch position: LOCK)No voltage
5 − Ground (Ignition switch position: ACC)Battery positive voltage
7 − Ground (Ignition switch position: LOCK)No voltage

Downloaded from www.Manualslib.com manuals search engine DI0ZF−01
Vehicle Brought to Workshop
Customer Problem Analysis
P. DI−320
Check and Clear DTC (Precheck)
P.
DI−321
Items inside
are titles of pages in this manual,
with the page number in the bottom portion. See
the pages for detailed explanations.
Problem Symptom ConfirmationSymptom Simulation
P. IN−16
Symptom
does not occur
Symptom
occurs
DTC Check
P. DI−321
Sensor CheckCircuit Inspection
P. DI−332 ∼ DI−360
DTC Chart
P. DI−326 Malfunction codeProblem Symptoms Table
P. DI−331
Check for Fluid Leakage
P. DI−362
Identification of Problem
Normal code
Repair
Confirmation Test
End
1
2
3
4
5
67
89
10
11
Step 8 :Diagnostic steps permitting the use of the
TOYOTA hand−held tester or TOYOTA
break−out−box.
− DIAGNOSTICSANTI−LOCK BRAKE SYSTEM
DI−319
576 Author: Date:
1996 TOYOTA T100 (RM449U)
ANTI−LOCK BRAKE SYSTEM
HOW TO PROCEED WITH TROUBLESHOOTING
Troubleshoooting in accordance with the procedure on the following pages.

Downloaded from www.Manualslib.com manuals search engine BR3890
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 BR3904
0.13 sec. 0.13 sec.
ON
OFF
BR3893
Malfunction Code (Example Code 72, 76)
7
26
7
ON
OFF
0.5 sec. 0.5 sec. 0.5 sec. 0.5 sec.1.5 sec. 2.5 sec.4 sec.
Repeat
A00778DLC1 E
1
Ts
− DIAGNOSTICSANTI−LOCK BRAKE SYSTEM
DI−323
1996 TOYOTA T100 (RM449U)
(4) Check that the ABS warning light blinks.
HINT:
If the ABS warning light does not blink, inspect the ABS warning
light circuit (See page DI−354).
(5) Drive vehicle straight forward.
HINT:
Drive vehicle faster than 45 km/h (28 mph) for several seconds.
(6) Stop the vehicle.
(7) Using SST, connect terminals Tc and E
1 of the
DLC1.
SST 09843−18020
(8) Read the number of blinks of the ABS warning light.
HINT:
See the list of DTC on page DI−326.
If every sensor is normal, a normal code is output (A cycle
of 0.25 sec. ON and 0.25 sec. OFF is repeated).
If 2 or more malfunction are indicated at the same time,
the lowest numbered code will be displayed 1st.
(9) After doing the check, disconnect terminals Ts and
E
1, Tc and E1 of the DLC1, and ignition switch
turned OFF.
(b) Check the deceleration sensor detection point.
(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 R05599
0.13 sec.
0.13 sec. 3 sec. ON
OFF
R12881
1,100 ± 30 mm
(43.31 ± 1.18 in.)
R12882
830 ± 30 mm
(32.68 ± 1.18 in.)
BR1865
0.13 sec.
0.13 sec. ON
OFF
R05596
0.13 sec. Braking0.13 sec. DI−324
− DIAGNOSTICSANTI−LOCK BRAKE SYSTEM
1996 TOYOTA T100 (RM449U)
(4) Check that the ABS warning light blinks.
HINT:
If the ABS warning light does not blink, inspect the ABS warning
light circuit (See page DI−354).
(5) Jack up the rear side of the vehicle slowly.
HINT:
When measuring the height, measure at the center of the lower
body of the vehicle.
(6) Check that the warning light blinks.
If the warning light turns on, inspect the deceleration sensor
installation. If the sensor installation is OK, replace the decel-
eration sensor.
(7) Jack down the vehicle slowly.
(8) Jack up the front side of the vehicle slowly, as
shown.
HINT:
When measuring the height, measure at the center of the lower
body of the vehicle.
(9) Check that the warning light blinks.
If the warning light turns on, inspect the deceleration sensor
installation. If the sensor installation is OK, replace the decel-
eration sensor.
(10) Jack down the vehicle slowly.
(c) Check the deceleration sensor operation.
(1) Drive the vehicle straight ahead at about 20 km/h
(12.4 mph) or more, lightly depress the brake pedal.
(2) Check that there is no change in the warning light
pattern.
(3) Drive the vehicle straight ahead at about 20 km/h
(12.4 mph) or more, and depress the brake pedal
moderately.
(4) Check that the warning light turns on while braking.

Downloaded from www.Manualslib.com manuals search engine R05597
0.13 sec. 0.13 sec.
Braking
− DIAGNOSTICSANTI−LOCK BRAKE SYSTEM
DI−325
1996 TOYOTA T100 (RM449U)
(5) Drive the vehicle straight ahead at about 20 km/h
(12.4 mph) or more, and depress the brake pedal
strongly.
(6) Check that the warning light pattern changes while
braking, as shown.
If the operation is not as specified, inspect the deceleration sen-
sor installation. If the sensor installation is OK, replace the de-
celeration sensor.
(7) Stop the vehicle and turn the ignition switch OFF.
(8) Remove the SST from the terminals of the DLC1.
SST 09843−18020
(d) Check the DTC of the speed sensor function.
Code No.DiagnosisTrouble Area
71Low output voltage of right front speed sensorRight front speed sensor
Sensor installation
72Low output voltage of left front speed sensorLeft front speed sensor
Sensor installation
73Low output voltage of right rear speed sensorRight rear speed sensor
Sensor installation
74Low output voltage of left rear speed sensorLeft rear speed sensor
Sensor installation
75Abnormal change in output voltage of right front speed
sensorRight front speed sensor rotor
76Abnormal change in output voltage of left front speed
sensorLeft front speed sensor rotor
77Abnormal change in output voltage of right rear speed
sensorRight rear speed sensor rotor
78Abnormal change in output voltage of left rear speed
sensorLeft rear speed sensor rotor
79*Deceleration sensor is faultyDeceleration sensor
Sensor installation
*: 4WD models