1996 TOYOTA T100 check engine

Downloaded from www.Manualslib.com manuals search engine SF0CL−01
P20109BatteryClosed +B RSC
P20108
RSO
BatteryOpen +B
− SFI (5VZ−FE)IDLE AIR CONTROL (IAC) VALVE
SF−43
1996 TOYOTA T100 (RM449U)
INSPECTION
INSPECT IAC VALVE OPERATION
(a) Connect the positive (+) lead from the battery to terminal
+B and negative (−) lead to terminal RSC, and check that
the valve is closed.
(b) Connect the positive (+) lead from the battery to terminal
+B and negative (−) lead to terminal RSO, and check that
the valve is open.
If operation is not as specified, replace the IAC valve.

Downloaded from www.Manualslib.com manuals search engine P15819
SF0CN−04
P07170No Continuity2
34
Ohmmeter Ohmmeter
1
P07171
1
2
34
Continuity Ohmmeter
Battery
− SFI (5VZ−FE)EFI MAIN RELAY
SF−45
1051 Author: Date:
1996 TOYOTA T100 (RM449U)
EFI MAIN RELAY
INSPECTION
1. REMOVE EFI MAIN RELAY (Marking: EFI)
2. INSPECT EFI MAIN RELAY CONTINUITY
(a) Using an ohmmeter, check that there is continuity be-
tween terminals 1 and 2.
If there is no continuity, replace the relay.
(b) Check that there is no continuity between terminals 3 and
5.
If there is continuity, replace the relay.
3. INSPECT EFI MAIN RELAY OPERATION
(a) Apply battery positive voltage across terminals 1 and 2.
(b) Using an ohmmeter, check that there is continuity be-
tween terminals 3 and 5.
If there is no continuity, replace the relay.
4. REINSTALL EFI MAIN RELAY

Downloaded from www.Manualslib.com manuals search engine S05193
SF0D3−01
P14361
P14362
SF−46
− SFI (5VZ−FE)CIRCUIT OPENING RELAY
1052 Author: Date:
1996 TOYOTA T100 (RM449U)
CIRCUIT OPENING RELAY
INSPECTION
1. REMOVE CIRCUIT OPENING RELAY
2. INSPECT CIRCUIT OPENING RELAY CONTINUITY
(a) Using an ohmmeter, check that there is continuity be-
tween terminals ST and E1.
If there is no continuity, replace the relay.
(b) Check that there is continuity between terminals +B and
FC.
If there is no continuity, replace the relay.
(c) Check that there is no continuity between terminals
+B and FP.
If there is continuity, replace the relay.
3. INSPECT CIRCUIT OPENING RELAY OPERATION
(a) Apply battery positive voltage across terminals ST and
E1.
(b) Using an ohmmeter, check that there is continuity be-
tween terminals +B and FP.
If there is no continuity, replace the relay.
4. REINSTALL CIRCUIT OPENING RELAY

Downloaded from www.Manualslib.com manuals search engine SF1QQ−01
− SFI (5VZ−FE)VSV FOR FUEL PRESSURE CONTROL
SF−47
1053 Author: Date:
1996 TOYOTA T100 (RM449U)
VSV FOR FUEL PRESSURE
CONTROL
INSPECTION
1. REMOVE VSV
(a) w/ EGR:
Disconnect the 2 connectors and 4 vacuum hoses, and
remove the 2 bolts and VSV.
(b) w/o EGR:
Disconnect the connector and 2 vacuum hoses, and re-
move the 2 bolts and VSV.
2. INSPECT VSV FOR OPEN CIRCUIT
Using an ohmmeter, check that there is continuity between the
terminals.
Resistance: 33 − 39 Ω at 20 °C(69 °F)
If there is no continuity, replace the VSV.
3. INSPECT VSV FOR GROUND
Using an ohmmeter, check that there is no continuity between
each terminal and the body.
If there is continuity, replace the VSV.
4. INSPECT VSV FOR OPERATION
(a) Check that air flows from port E to port G.

Downloaded from www.Manualslib.com manuals search engine SF−48
− SFI (5VZ−FE)VSV FOR FUEL PRESSURE CONTROL
1054 Author: Date:
1996 TOYOTA T100 (RM449U)
(b) Apply battery positive voltage across the terminals.
(c) Check that air flows from port E to the filter.
If operation is not as specified, replace the VSV.
5. REINSTALL VSV
(a) Install the VSV with the 2 bolts.
Torque: 8 N·m (80 kgf·cm, 71 in.·lbf)
(b) w/ EGR:
Connect the 2 connectors and 4 vacuum hoses to the 2
VSV.
(c) w/o EGR:
Connect the connector and 2 vacuum hoses to the VSV.

Downloaded from www.Manualslib.com manuals search engine SF0D0−02
− SFI (5VZ−FE)VSV FOR EXHAUST GAS CONTROL VALVE
SF−49
1055 Author: Date:
1996 TOYOTA T100 (RM449U)
VSV FOR EXHAUST GAS
CONTROL VALVE
INSPECTION
1. REMOVE VSV
Disconnect the 2 connectors and 4 vacuum hoses, and remove
the 2 bolts and VSV.
2. INSPECT VSV FOR OPEN CIRCUIT
Using an ohmmeter, check that there is continuity between the
terminals.
Resistance: 33 − 39 Ω at 20 °C (68 °F)
If there is no continuity, replace the VSV.
3. INSPECT VSV FOR GROUND
Using an ohmmeter, check that there is no continuity between
each terminal and the body.
If there is continuity, replace the VSV.
4. INSPECT VSV OPERATION
(a) Check that air flows from port E to port G.
(b) Apply battery positive voltage across the terminals.
(c) Check that air flows from port E to the filter.
If operation is not as specified, replace the VSV.
5. REINSTALL VSV
(a) Install the VSV with the 2 bolts.
Torque: 8 N·m (80 kgf·cm, 71 in.·lbf)
(b) Connect the 2 connectors and 4 vacuum hoses to the 2
VSV.

Downloaded from www.Manualslib.com manuals search engine SF0CP−03
P21681
Continuity Ohmmeter
P21682No Continuity Ohmmeter
P21683
Air
E
F
P21684
Air
E
F Battery SF−50
− SFI (5VZ−FE)VSV FOR EVAPORATIVE EMISSION (EVAP)
1056 Author: Date:
1996 TOYOTA T100 (RM449U)
VSV FOR EVAPORATIVE
EMISSION (EVAP)
INSPECTION
1. REMOVE VSV
Disconnect the connector and 2 EVAP hoses, and remove the
screw and VSV.
2. INSPECT VSV FOR OPEN CIRCUIT
Using an ohmmeter, measure the resistance between the ter-
minals.
Resistance:
29 − 33 Ω at 20°C (68°F)
If resistance is not as specified, replace the VSV.
3. INSPECT VSV FOR GROUND
Using an ohmmeter, check that there is no continuity between
each terminal and the body.
If there is continuity, replace the VSV.
4. INSPECT VSV OPERATION
(a) Check that air flows difficulty from port E to port F.
(b) Apply battery positive voltage across the terminals.
(c) Check that air flows from port E to port F.
If operation is not as specified, replace the VSV.
5. REINSTALL VSV
(a) Install the VSV with the screw.
(b) Connect the connector and 2 EVAP hoses to the VSV.

Downloaded from www.Manualslib.com manuals search engine SF0CV−04
P21182
SSTKnock Sensor 1
Knock Sensor 2
P01630
Ohmmeter
− SFI (5VZ−FE)KNOCK SENSOR
SF−57
1996 TOYOTA T100 (RM449U)
INSPECTION
1. DRAIN ENGINE COOLANT
2. REMOVE AIR CLEANER HOSE
3. REMOVE INTAKE AIR CONNECTOR (See page
EM−30)
4. REMOVE HIGH−TENSION CORDS WITH IGNITION
COILS (See page IG−7)
5. REMOVE TIMING BELT AND CAMSHAFT TIMING
PULLEYS (See page EM−13)
6. REMOVE TIMING BELT IDLER NO. 2
7. REMOVE FUEL PRESSURE REGULATOR (See page
SF−16)
8. REMOVE INTAKE MANIFOLD ASSEMBLY (See page
EM−30)
9. REMOVE WATER BYPASS PIPE AND KNOCK SEN-
SOR WIRE (See page EM−84)
10. REMOVE KNOCK SENSORS
Using SST, remove the knock sensor.
SST 09816−30010
11. INSPECT KNOCK SENSORS
Using an ohmmeter, check that there is no continuity between
the terminal and body.
If there is continuity, replace the sensor.
12. INSTALL KNOCK SENSORS
Using SST, install the knock sensor.
SST 09816−30010
Torque: 39 N·m (400 kgf·cm, 29 ft·lbf)
13. INSTALL WATER BYPASS PIPE AND KNOCK SEN-
SOR WIRE (See page CO−5)
14. INSTALL INTAKE MANIFOLD ASSEMBLY (See page
EM−51)
15. INSTALL FUEL PRESSURE REGULATOR (See page
SF−17)
16. INSTALL TIMING BELT IDLER NO. 2 (See page
EM−19)
17. INSTALL CAMSHAFT TIMING PULLEYS AND TIMING
BELT (See page EM−19)
18. INSTALL HIGH−TENSION CORDS WITH IGNITION
COILS (See page IG−8)