1996 TOYOTA T100 wiring

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IN0IL−01
Z11554
Seal Lock Adhesive
IN−4
− INTRODUCTIONREPAIR INSTRUCTIONS
4 Author: Date:
1996 TOYOTA T100 (RM449U)
REPAIR INSTRUCTIONS
GENERAL INFORMATION
BASIC REPAIR HINT
(a) Use fender, seat and floor covers to keep the vehicle
clean and prevent damage.
(b) During disassembly, keep parts in the appropriate order
to facilitate reassembly.
(c) Observe the following operations:
(1) Before performing electrical work, disconnect the
negative (−) terminal cable from the battery.
(2) If it is necessary to disconnect the battery for in-
spection or repair, always disconnect the negative
(−) terminal cable which is grounded to the vehicle
body.
(3) To prevent damage to the battery terminal, loosen
the cable nut and raise the cable straight up without
twisting or prying it.
(4) Clean the battery terminals and cable ends with a
clean shop rag. Do not scrape them with a file or oth-
er abrasive objects.
(5) Install the cable ends to the battery terminals with
the nut loose, and tighten the nut after installation.
Do not use a hammer to tap the cable ends onto the
terminals.
(6) Be sure the cover for the positive (+) terminal is
properly in place.
(d) Check hose and wiring connectors to make sure that they
are secure and correct.
(e) Non−reusable parts
(1) Always replace cotter pins, gaskets, O−rings and oil
seals etc. with new ones.
(2) Non−reusable parts are indicated in the component
illustrations by the ”” symbol.
(f) Precoated parts
Precoated parts are bolts and nuts, etc. that are coated
with a seal lock adhesive at the factory.
(1) If a precoated part is retightened, loosened or
caused to move in any way, it must be recoated with
the specified adhesive.
(2) When reusing precoated parts, clean off the old
adhesive and dry with compressed air. Then apply
the specified seal lock adhesive to the bolt, nut or
threads.

Downloaded from www.Manualslib.com manuals search engine IN−14
− INTRODUCTIONFOR ALL OF VEHICLES
14 Author: Date:
1996 TOYOTA T100 (RM449U)
3. IF VEHICLE IS EQUIPPED WITH MOBILE COMMUNICATION SYSTEM
For vehicles with mobile communication systems such as two−way radios and cellular telephones, observe
the following precautions.
(1) Install the antenna as far as possible away from the ECU and sensors of the vehicle’s electronic
system.
(2) Install the antenna feeder at least 20 cm (7.87 in.) away from the ECU and sensors of the ve-
hicle’s electronics systems. For details about ECU and sensors locations, refer to the section on
the applicable component.
(3) Avoid winding the antenna feeder together with the other wiring as much as possible, and also
avoid running the antenna feeder parallel with other wire harnesses.
(4) Confirm that the antenna and feeder are correctly adjusted.
(5) Do not install powerful mobile communications system.

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GRECM
KNK
E1 12
E6
WIRING DIAGRAM
 Wiring Diagram
DTC P0325Knock Sensor 1 Circuit Malfunction
CIRCUIT DESCRIPTION
Knock sensor is fitted to the cylinder block to detect engine knocking. This sensor contains a piezoelectric element which
generates a voltage when it becomes deformed, which occurs when the cylinder block vibrates due to knocking. If engine
knocking occurs, ignition timing is retarded to suppress it.
DTC No. DTC Detecting Condition Trouble Area
P0325No knock sensor 1 signal to ECM with engine speed,
1,200 rpm or more. Open or short in knock sensor1 circuit
 Knock sensor 1 (looseness)
 ECM
If the ECM detects the above diagnosis conditions, it operates the fall safe function in which the corrective retard angle
value is set to the maximum value.
 Diagnostic Trouble Code No. and Detection Item
 Circuit Description
The major role and operation, etc. of the circuit
and its component parts are explained.
 Indicates the diagnostic trouble code, diagnostic
trouble code set parameter and suspect area of
the problem.
This shows a wring diagram of the circuit.
Use the diagram together with ELECTRICAL
WIRING DIAGRAM to thoroughly understand the
circuit.
Wiring colors are indicated by an alphabetical code.
B = Black, L = Blue, R = Red, BR = Brown,
LG = Light Green, V = Violet, G = Green,
O = Orange, W = White, GR = Gray, P = Pink,
Y = Yellow
The first letter indicates the basic wire color and
the second letter indicates the color of the stripe. IN−24
− INTRODUCTIONHOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS
1996 TOYOTA T100 (RM449U)
6. CIRCUIT INSPECTION
How to read and use each page is shown below.

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− PREPARATIONMFI (3RZ−FE)
PP−19
68 Author: Date:
1996 TOYOTA T100 (RM449U)
MFI (3RZ−FE)
SST (Special Service Tools)
09268−41046Injection Measuring Tool Set
(09268−41091)NO.7 Union
(90405−09015)No.1 Union
09268−45012EFI Fuel Pressure Gauge
09631−22020Power Steering Hose Nut
14 x 17 mm Wrench SetFuel line flare nut
09816−30010Oil Pressure Switch SocketKnock sensor
09842−30070Wiring ”F” EFI Inspection
09843−18020Diagnosis Check Wire

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PP−22
− PREPARATIONSFI (5VZ−FE)
71 Author: Date:
1996 TOYOTA T100 (RM449U)
SFI (5VZ−FE)
SST (Special Service Tools)
09268−41046Injection Measuring Tool Set
(09268−41091)NO.7 Union
(09268−52011)Injection Measuring Attachment
09268−45012EFI Fuel Pressure Gauge
09631−22020Power Steering Hose Nut
14 x 17 mm Wrench SetFuel line flare nut
09816−30010Oil Pressure Switch Socket
09842−30070Wiring ”F” EFI Inspection
09843−18020Diagnosis Check Wire

Downloaded from www.Manualslib.com manuals search engine DI0TA−03
P19559
E7E6
E4
13
1 2 3 4 5 6 7 8 9 10 11
14 15 16 17 18 19 20 21 22 1213 1 2 3 4 5 6 7 8
14 15 16 1213 910 11 1 2 3 4 5 6 7 8 9 10 11
14 15 16 17 18 19 20 21 22 12
23
24 25 26
ECM Terminals
− DIAGNOSTICSENGINE (3RZ−FE)
DI−17
1996 TOYOTA T100 (RM449U)
TERMINALS OF ECM
For M/T
Symbols (Terminals No.)Wiring ColorConditionSTD Voltage (V)
BATT (E4−1) − E1 (E7−14)B−G ↔BRAlways9 − 14
+B (E4−12) − E1 (E7−14)W−R ↔ BRIG switch ON9 − 14
VCC (E6−1) − E2 (E6−9)G−Y ↔ BR−BIG switch ON4.5 − 5.5
IDL (E6−12) − E2 (E6−9)Y−L↔BR−B
IG switch ON, Apply vacuum to throttle opener
Throttle valve fully closed0 − 3.0
IG switch ON, Throttle valve fully open9 − 14
VTA (E6−11) − E2 (E6−9)Y↔ BR−B
IG switch ON, Apply vacuum to throttle opener
Throttle valve fully closed0.3 − 0.8
IG switch ON, Throttle valve fully open3.2 − 4.9
VG (E6−2) − E3 (E6−16)Y−R ↔BRIdling, N position, A/C switch OFF1.1 − 1.5
THA (E6−7) − E2 (E6−9)Y−G ↔BR−BIdling, Intake air temp. 20°C (68°F)0.5 − 3.4
THW (E6−4) − E2 (E6−9)G−Y ↔BR−BIdling, Engine coolant temp. 80°C (176°F) 0.2 − 1.0
STA (E4−11) − E1 (E7−14)B−W ↔ BRCranking6.0 or more
#10 (E7−12) − E01 (E7−13)W−R ↔BR
IG switch ON9 − 14
IdlingPulse generation
(See page DI−58)
#20 (E7−11) − E01 (E7−13)W ↔BR
IG switch ON9 − 14
IdlingPulse generation
(See page DI−58)
IGT (E7−20) − E1 (E7−14)B−L ↔BRIdlingPulse generation
(See page DI−103)
IGF (E7−3) − E1 (E7−14)B−Y ↔BR
IG switch ON, Disconnect igniter connectorBelow 2.0
IdlingPulse generation
(See page DI−103)
G (E7−5) − G− (E7−18)B ↔GIdlingPulse generation
(See page DI−66)
NE (E7−4) − NE− (E7−17)W ↔BIdlingPulse generation
(See page DI−66)
FC (E4−14) − E1 (E7−14)G−Y ↔BRIG switch ON9 − 14
EGR (E7−6) − E1 (E7−14)P ↔BRIG switch ON9 − 14
EVP (E7−23) − E1 (E7−14)W−G ↔ BRIG switch ON9 − 14
RSC (E7−9) − E1 (E7−14)V−Y ↔ BRIG switch ON, Disconnect E7 of ECM connector9 − 14
RSO (E7−10) − E1 (E7−14)V−R ↔BRIG switch ON, Disconnect E7 of ECM connector9 − 14
OX1 (E6−6) − E1 (E7−14)B ↔BRMaintain engine speed at 2,500 rpm for 2 min. after
warming upPulse generation

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1 2 3 4 5 6 7 8 9 10 11 12 13
14 15 16 17 18 19 20 21 22 23 24 25 261 2 3 4 5 6 7 8
9 10 11 12 13 14 15 161 2 3 4 5 6
7 8 9 10 11 121 2 3 4 5 6 7 8 9 10 11
14 15 16 17 18 19 20 21 22 1213
E7 E6 E5 E4
ECM Terminals
− DIAGNOSTICSENGINE (3RZ−FE)
DI−19
1996 TOYOTA T100 (RM449U)
For A/T
Symbols (Terminals No.)Wiring ColorConditionSTD Voltage (V)
BATT (E4−2) − E1 (E7−24)B−G ↔BRAlways9 − 14
+B (E4−12) − E1 (E7−24)W−R ↔ BRIG switch ON9 − 14
VCC (E6−1) − E2 (E6−9)G−Y ↔ BR−BIG switch ON4.5 − 5.5
IDL (E6−11) − E2 (E6−9)Y−L↔ BR−B
IG switch ON, Apply vacuum to throttle opener
Throttle valve fully closed0 − 3.0
IG switch ON, Throttle valve fully open9 − 14
VTA (E6−10) − E2 (E6−9)Y↔ BR−B
IG switch ON, Apply vacuum to throttle opener
Throttle valve fully closed0.3 − 0.8
IG switch ON, Throttle valve fully open3.2 − 4.9
VG (E6−2) − E3 (E6−3)Y−R ↔BRIdling, A/C switch OFF1.0 − 1.5
THA (E6−12) − E2 (E6−9)Y−G ↔BR−BIdling, Intake air temp. 20°C (68°F)0.5 − 3.4
THW (E6−4) − E2 (E6−9)G−Y ↔BR−BIdling, Engine coolant temp. 80°C (176°F) 0.2 − 1.0
STA (E4−11) − E1 (E7−24)B−W ↔ BRCranking6.0 or more
#10 (E7−12) − E01 (E7−13)W−R ↔BR
IG switch ON9 − 14
IdlingPulse generation
(See page DI−58)
#20 (E7−11) − E01 (E7−13)W ↔BR
IG switch ON9 − 14
IdlingPulse generation
(See page DI−58)
IGT (E7−23) − E1 (E7−24)B−L ↔BRIdlingPulse generation
(See page DI−103)
IGF (E7−17) − E1 (E7−24)B−Y ↔BR
IG switch ON, Disconnect igniter connectorBelow 2.0
IdlingPulse generation
(See page DI−103)
G (E5−11) − G− (E5−5)B ↔GIdlingPulse generation
(See page DI−66)
NE (E5−12) − NE− (E5−6)W ↔BIdlingPulse generation
(See page DI−66)
FC (E7−14) − E1 (E7−24)G−Y ↔BRIG switch ON9 − 14
EGR (E7−22) − E1 (E7−24)P ↔BRIG switch ON9 − 14
PRG (E5−1) − E1 (E7−24)W−G ↔BRIG switch ON9 − 14
RSC (E7−6) − E1 (E7−24)V−Y ↔BRIG switch ON, Disconnect E7 of ECM connector9 − 14
RSO (E7−7) − E1 (E7−24)V−R ↔BRIG switch ON, Disconnect E7 of ECM connector9 − 14
OX1 (E6−5) − E1 (E7−24)B ↔BRMaintain engine speed at 2,500 rpm for 2 min. after
warming upPulse generation

Downloaded from www.Manualslib.com manuals search engine P19917
From
IG SwitchBattery
R/B No.2
J/B No.1B−W
W−R
B−YEFI
IGN
EFI RelayW−R
B−Y
W−B
EA1
EA1
IE1
W−R
W−R
1A 1C
EA
2
222
2
2 2 3
4
17
31
22
E6E6
E6 E62
16 3 Y−R
BR
(M/T)(A/T)
VG
E3
E1W
9
9ECM
Mass Air Flow Meter 5
1
3
− DIAGNOSTICSENGINE (3RZ−FE)
DI−23
1996 TOYOTA T100 (RM449U)
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Connect OBD II scan tool or TOYOTA hand−held tester and read value of mass
air flow rate.
PREPARATION:
(a) Connect the OBD II scan tool or TOYOTA hand−held tester to the DLC3.
(b) Turn the ignition switch ON and push the OBD II scan tool or TOYOTA hand−held tester main switch
ON.
(c) Start the engine.
CHECK:
Read mass air flow rate on the OBD II scan tool or TOYOTA hand−held tester.
RESULT:
Type IType II
Mass air flow rate (gm/sec.)0.5 gm/sec.202.2 gm/sec. or more
Type I Go to step 2.
Type II Go to step 5.