1996 TOYOTA T100 check engine

Downloaded from www.Manualslib.com manuals search engine − DIAGNOSTICSENGINE (5VZ−FE)
DI−225
1996 TOYOTA T100 (RM449U)
10 Check operation of VSV for vapor pressure sensor.
NG Replace VSV.
OK
11 Check for open and short in harness and connector between EFI main relay
(Marking: EFI), VSV for vapor pressure sensor and ECM (See page IN−26).
NG Repair or replace harness or connector.
OK
Check and replace ECM (See page IN−26).

Downloaded from www.Manualslib.com manuals search engine BE6653
P24205
P24324A00120
ON
SP1 (+)
SP1 (+)
For M/T
For A/T
AT7809
4 ∼ 6 V
Turn Wheel
− DIAGNOSTICSENGINE (5VZ−FE)
DI−227
1996 TOYOTA T100 (RM449U)
INSPECTION PROCEDURE
1 Check operation of speedometer.
CHECK:
Drive the vehicle and check if the operation of the speedometer in the combination meter is normal.
HINT:
The vehicle speed is operating normally if the speedometer display is normal.
NG Check speedometer and cable
(See page BE−38).
OK
2 Check voltage between terminal SP1 of ECM connector and body ground.
PREPARATION:
(a) Remove the right cowl side trim (See page SF−61).
(b) Disconnect the cruise control ECU connector.
(c) Shift the shift lever to neutral.
(d) Jack up the rear wheel on one side.
(e) Turn the ignition switch ON.
CHECK:
Measure voltage between terminal SP1 of ECM connector and
body ground when the wheel is turned slowly.
OK:
Voltage is generated intermittently.
NG Check and repair harness and connector
between combination meter and ECM.
OK
Check and replace ECM (See page IN−26).

Downloaded from www.Manualslib.com manuals search engine BE6653
P24208
P24325A00121
ON
RSO (+) RSC (+)
RSO (+) RSC (+)
E7 Connector E7 Connector
For M/T
For A/T
− DIAGNOSTICSENGINE (5VZ−FE)
DI−229
1996 TOYOTA T100 (RM449U)
INSPECTION PROCEDURE
1 Check air induction system (See page SF−1).
NG Repair or replace.
OK
2 Check A/C signal circuit (See page AC−79).
NG Repair or replace.
OK
3 Check voltage terminals RSO and RSC of ECM connector and body ground.
PREPARATION:
(a) Remove the right cowl side trim (See page SF−61).
(b) Disconnect the E7 connector of ECM.
(c) Turn the ignition switch ON.
CHECK:
Measure voltage between terminals RSO and RSC of the ECM
connector and body ground.
OK:
Voltage: 9 − 14 V
OK Go to step 5.
NG

Downloaded from www.Manualslib.com manuals search engine DI−230
− DIAGNOSTICSENGINE (5VZ−FE)
1996 TOYOTA T100 (RM449U)
4 Check IAC valve (See page SF−39).
NG Replace IAC valve.
OK
Check for open and short in harness and
connector between R/B No.2 and IAC valve,
IAC valve and ECM (See page IN−26).
5 Check operation of the IAC valve (See page SF−43).
NG Repair or replace IAC valve.
OK
Check and replace ECM (See page IN−26).

Downloaded from www.Manualslib.com manuals search engine A16045
DI−232
− DIAGNOSTICSENGINE (5VZ−FE)
1996 TOYOTA T100 (RM449U)
INSPECTION PROCEDURE
HINT:
If DTC ”P0110” (intake air temp. circuit malfunction), ”P0115” (engine coolant temp. circuit malfunction) and
”P0120” (throttle/pedal position sensor/ switch ”A” circuit malfunction) are output simultaneously, E2 (sensor
ground) may be open.
TOYOTA hand−held tester:
1 Check for open in harness or ECM.
PREPARATION:
(a) Connect the TOYOTA hand−held tester to the DLC3.
(b) Disconnect the throttle position sensor connector.
(c) Connect sensor wire harness terminals between termi-
nals 3 and 4.
(d) Turn ignition switch ON.
CHECK:
Read CTP switch signal on the TOYOTA hand−held tester.
OK:
CTP switch signal: ON
OK Confirm good connection at sensor. If OK, re-
place throttle position sensor.
NG

Downloaded from www.Manualslib.com manuals search engine A16046
− DIAGNOSTICSENGINE (5VZ−FE)
DI−233
1996 TOYOTA T100 (RM449U)
2 Check for open in harness or ECM.
PREPARATION:
(a) Remove right cowl side trim.
(b) Connect between terminals IDL and E2 of ECM connec-
tors.
HINT:
Throttle position sensor connector is disconnected. Before
checking, do a visual check and contact pressure check for the
connector.
(c) Turn 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 A16047
DI−234
− DIAGNOSTICSENGINE (5VZ−FE)
1996 TOYOTA T100 (RM449U)
OBDII scan tool (excluding TOYOTA hand−held tester):
1 Check for open in harness or ECM
PREPARATION:
(a) Disconnect the throttle position sensor connector.
(b) Turn ignition switch ON.
CHECK:
Measure voltage between terminals 3 and 4 of throttle position
sensor connector.
OK:
Voltage: 9 − 14 V
OK Confirm good connection at sensor. If OK, re-
place throttle position sensor.
NG
2 Check for open in harness and connector between throttle position sensor and
ECM (See page IN−26).
NG Open in harness between ECM and throttle
position sensor.
OK
Confirm connection at ECM. If OK, replace
ECM.

Downloaded from www.Manualslib.com manuals search engine S00903
Battery W−R
W−R R−L WAM2
2
24
3R/B 8
IA3Switch IG
B−R
IE1
B−L
BR−B
B−W
B−Y
BRInjector
No.1
No.2
No.3
EB
8B−R
714
No.2Spark
PlugB−RB−RECM
Ignition
Coil
B−R
BR−Y
BR−W
B−R
B−R
B−W
2 1
2 1
2 1
10
2
1
3
8 4 5 6 7 9
To
Tachometer
(M/T)(A/T)
E7 E7
E7 E7
E7 E7
E7 E7IGT1 23 24
22 25
21 26
17 12IGT2
IGT3
IGF5 V
DI−236
− DIAGNOSTICSENGINE (5VZ−FE)
1996 TOYOTA T100 (RM449U)
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check spark plug (See page IG−1).
NG Go to step 4.
OK