1996 TOYOTA T100 engine

Downloaded from www.Manualslib.com manuals search engine SF0CH−02
SF−38
− SFI (5VZ−FE)THROTTLE BODY
1996 TOYOTA T100 (RM449U)
INSTALLATION
Installation is in the reverse order of removal (See page SF−35).

Downloaded from www.Manualslib.com manuals search engine SF0CI−03
P19970
SST
TE1 E1DLC1
DLC1
P21126
Ohmmeter RSC
+B
RSOIAC Valve
− SFI (5VZ−FE)IDLE AIR CONTROL (IAC) VALVE
SF−39
1045 Author: Date:
1996 TOYOTA T100 (RM449U)
IDLE AIR CONTROL (IAC) VALVE
ON−VEHICLE INSPECTION
1. INSPECT IAC VALVE OPERATION
(a) Initial conditions:
Engine at normal operating temperature
Idle speed check correctly
Transmission in neutral position
A/C switch OFF
(b) Using SST, connect terminals TE1 and E1 of the
DLC1.
SST 09843−18020
(c) After engine speed is kept at approx. 1,000 rpm for 5 se-
conds, check that it returns to idle speed.
If the engine speed operation is not as specified, check the IAC
valve, wiring and ECM.
(d) Remove the SST from the DLC1.
SST 09843−18020
2. INSPECT IAC VALVE RESISTANCE
NOTICE:
”Cold” and ”Hot” in the following sentences express the
temperature of the coils themselves. ”Cold” is from −10°C
(14°F) to 50°C (122°F) and ”Hot” is from 50°C (122°F) to
100°C (212°F).
(a) Disconnect the IAC valve connector.
(b) Using an ohmmeter, measure the resistance between ter-
minal +B and other terminals (RSC, RSO).
Resistance:
Cold: 17.0 − 24.5 Ω
Hot: 21.5 − 28.5 Ω
If resistance is not as specified, replace the IAC valve.
(c) Reconnect the IAC valve connector.
3. INSPECT AIR ASSIST SYSTEM
(a) Initial conditions:
Engine at normal operating temperature
Idle speed check correctly
Transmission in neutral position
A/C switch OFF

Downloaded from www.Manualslib.com manuals search engine P19970
SST
TE1 E1DLC1
P21055Plug Air Assist Hose
Disconnect
SF−40
− SFI (5VZ−FE)IDLE AIR CONTROL (IAC) VALVE
1046 Author: Date:
1996 TOYOTA T100 (RM449U)
(b) Using SST, connect terminals TE1 and E1 of the
DLC1.
SST 09843−18020
(c) After engine speed is kept at 900 − 1,300 rpm for 10 se-
conds, check that it returns to idle speed.
(d) Stop the engine.
(e) Disconnect the air assist hose from the IAC valve, and
plug it.
(f) Start the engine and check that the idle speed reaches
500 rpm or below (the engine may stall).
If the idle does not reach 500 rpm or below, check for a
leak between the air assist hoses, pipe and injectors.
(g) Remove the SST from the DLC1.
SST 09843−18020
(h) Reconnect the air assist hose to the IAC valve.

Downloaded from www.Manualslib.com manuals search engine SF0CJ−01
S05191
− SFI (5VZ−FE)IDLE AIR CONTROL (IAC) VALVE
SF−41
1996 TOYOTA T100 (RM449U)
COMPONENTS

Downloaded from www.Manualslib.com manuals search engine SF0CK−01
P19936
SF−42
− SFI (5VZ−FE)IDLE AIR CONTROL (IAC) VALVE
1996 TOYOTA T100 (RM449U)
REMOVAL
1. REMOVE THROTTLE BODY
(See page SF−35)
2. REMOVE IAC VALVE
Remove the 4 screws, IAC valve and gasket.
HINT:
Place a new gasket on the throttle body.

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 SF0CM−01
SF−44
− SFI (5VZ−FE)IDLE AIR CONTROL (IAC) VALVE
1996 TOYOTA T100 (RM449U)
INSTALLATION
Installation is in the reverse order of removal (See page
SF−42).

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