engine repair TOYOTA T100 1996 Factory Workshop Manual

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P24207
P24208
A00083
ON
For M/T
RSO (+) RSC (+)
For A/T
RSO (+) RSC (+)E7 Connector
E7 Connector
− DIAGNOSTICSENGINE (3RZ−FE)
DI−95
1996 TOYOTA T100 (RM449U)
INSPECTION PROCEDURE
1 Check air induction system (See page MF−1).
NG Repair or replace.
OK
2 Check voltage between terminals RSO and RSC of ECM connector and body
ground.
PREPARATION:
(a) Remove the right cowl side trim (See page MF−50).
(b) Disconnect the E7 connector of the ECM.
(c) Turn the ignition switch ON.
CHECK:
Measure voltage between terminals RSO and RSC of ECM
connector and body ground.
OK:
Voltage: 9 − 14 V
OK Go to step 4.
NG

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− DIAGNOSTICSENGINE (3RZ−FE)
1996 TOYOTA T100 (RM449U)
3 Check IAC valve (See page MF−31).
NG Replace IAC valve.
OK
Check for open and short in harness and con-
nector between R/B No.2 and IAC valve, IAC
valve and ECM (See page IN−26).
4 Check operation of IAC valve (See page MF−31).
NG Repair or replace IAC valve.
OK
Check and replace ECM (See page IN−26).

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P19556
P19711
P19687
A00085
ON
ECM
1
2
3
411
11 1 0
11
99
Throttle Position
Sensor
E6 E6
(M/T)(A/T)5 V
VCC
VTA
IDL
E2B+
E1
12
For M/T
For A/TE2
E2
IDL (+)
IDL (+)
E6 E6
E6 E6
E6 E6
− DIAGNOSTICSENGINE (3RZ−FE)
DI−99
1996 TOYOTA T100 (RM449U)
3 Check for open in harness or ECM.
PREPARATION:
(a) Remove the right cowl side trim (See page MF−50).
(b) Connect between terminals IDL and E2 of the ECM con-
nector.
HINT:
Throttle position sensor connector is disconnected.
Before checking, do a visual check and contact pressure check
for the connector (See page IN−26).
(c) Turn the ignition switch ON.
CHECK:
Read CTP switch signal on the TOYOTA hand−held tester.
OK:
CTP switch signal: ON
OK Open in harness between ECM and throttle
position sensor, repair or replace harness.
NG
Confirm connection at ECM.
If OK, replace ECM.

Downloaded from www.Manualslib.com manuals search engine A00683
1
2
3
411
11 1 0
12 11
99E6 E6
(M/T)(A/T)5 V
VCC
VTA
IDL
E2
B+
E1E6 E6
E6 E6
E6E6
ON
For M/T
For A/TE6 Connector
E6 Connector
− DIAGNOSTICSENGINE (3RZ−FE)
DI−101
1996 TOYOTA T100 (RM449U)
5 Check for short in harness or ECM.
PREPARATION:
(a) Remove right cowl side trim (See page MF−50).
(b) Disconnect the E6 connector of the ECM.
(c) Turn the ignition switch ON.
HINT:
Throttle position sensor connector is disconnected.
CHECK:
Read CTP switch signal on TOYOTA hand−held tester.
OK:
CTP switch signal: OFF
OK Short in harness between ECM and throttle
position sensor, repair or replace harness.
NG
Confirm connection at ECM.
If OK, replace ECM.

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− DIAGNOSTICSENGINE (3RZ−FE)
1996 TOYOTA T100 (RM449U)
INSPECTION PROCEDURE
1 Check spark plug and spark (See page IG−1).
NG Go to step 4.
OK
2 Check for open and short in harness and connector in IGF signal circuit between
ECM and igniter (See page IN−26).
NG Repair or replace harness or connector.
OK

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P24210
P24211
A00087
ON
IGF (+) For M/T
For A/T
IGF (+)
− DIAGNOSTICSENGINE (3RZ−FE)
DI−105
1996 TOYOTA T100 (RM449U)
3 Disconnect igniter connector and check voltage between terminal IGF of ECM
connector and body ground.
PREPARATION:
(a) Disconnect the igniter connector.
(b) Remove the right cowl side trim (See page MF−50).
(c) Turn the ignition switch ON.
CHECK:
Measure voltage between terminal IGF of ECM connector and
body ground.
OK:
Voltage: 4.5 − 5.5 V
OK Replace igniter.
NG
Check and replace ECM (See page IN−26).
4 Check for open and short in harness and connector in IGT signal circuit between
ECM and igniter (See page
IN−26).
NG Repair or replace harness or connector.
OK

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P24212
P24213
A00088
START
IGT (+) For M/T
For A/T
IGT (+)
BE6653
P24215
A00089
ON
START
3 (+)
− DIAGNOSTICSENGINE (3RZ−FE)
DI−107
1996 TOYOTA T100 (RM449U)
6 Disconnect igniter connector and check voltage between terminals IGT of ECM
connector and body ground.
PREPARATION:
Disconnect the igniter connector.
CHECK:
Measure voltage between terminals IGT of ECM connector and
body ground when engine is cranked.
OK:
Voltage: More than 0.1 V and less than 4.5 V
NG Check and replace ECM (See page IN−26).
OK
7 Check voltage between terminal 3 of igniter connector and body ground.
PREPARATION:
Disconnect the igniter connector.
CHECK:
When the ignition switch is turned to ”ON” and ”STA” position,
measure voltage between terminal 3 of igniter connector and
body ground.
OK:
Voltage: 9 − 14 V
NG Check and repair igniter power source circuit.
OK

Downloaded from www.Manualslib.com manuals search engine DI−108
− DIAGNOSTICSENGINE (3RZ−FE)
1996 TOYOTA T100 (RM449U)
8 Check for open and short in harness and connector between ignition switch and
ignition coil, ignition coil and igniter (See page IN−26).
NG Repair or replace harness or connector.
OK
9 Check ignition coil (See page IG−1).
NG Replace ignition coil.
OK
Replace igniter.

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DI−111
1996 TOYOTA T100 (RM449U)
INSPECTION PROCEDURE
HINT:
This inspection procedure is based on the premise that the engine is cranked normally. If the engine is not
cranked, proceed to the matrix chart of problem symptoms on page DI−21.
1 Connect the TOYOTA hand−held tester and check STA signal.
PREPARATION:
(a) Connect the TOYOTA hand−held tester to the DLC3.
(b) Turn ignition switch ON and TOYOTA hand−held tester main switch ON.
CHECK:
Read STA signal on the TOYOTA hand−held tester while starter operates.
OK:
Ignition switch positionONSTART
STA signalOFFON
OK Proceed to next circuit inspection shown on
matrix chart (See page DI−21)
NG
2 Check for open in harness and connector between ECM and starter relay
(See page IN−26).
NG Repair or replace harness and sconnector.
OK
Check and replace ECM (See page IN−26).

Downloaded from www.Manualslib.com manuals search engine AB0117
P24216
P24217
A00090
LOCK
BATT (+)
BATT (+) For M/T
For A/T
FI7107
EFI Fuse
R/B No.2
− DIAGNOSTICSENGINE (3RZ−FE)
DI−11 3
1996 TOYOTA T100 (RM449U)
INSPECTION PROCEDURE
1 Check voltage between terminal BATT of ECM connector and body ground.
PREPARATION:
Remove the right cowl side trim (See page MF−50).
CHECK:
Measure voltage between terminal BATT of ECM connector
and body ground.
OK:
Voltage: 9 − 14 V
OK Check and replace ECM (See page IN−26).
NG
2 Check EFI fuse.
PREPARATION:
Remove the EFI fuse from the R/B No2.
CHECK:
Check continuity of EFI fuse.
OK:
Continuity
NG Check for short in all the harness and compo-
nents connected to EFI fuse.
OK
Check and repair harness or connector be-
tween battery, EFI fuse and ECM.