Toyota T100 1996 Service Manual page 1058

DLC1
TE1 E1
DLC1
RSC
+B
RSO
Ohmmeter
1996 TOYOTA T100 (RM449U)
SFI (5VZ−FE)
IDLE AIR CONTROL (IAC) VALVE
ON−VEHICLE INSPECTION
1. INSPECT IAC VALVE OPERATION
(a) Initial conditions:
(b) Using SST, connect terminals TE1 and E1 of the
SST
DLC1.
SST
(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
P19970
2. INSPECT IAC VALVE RESISTANCE
IAC Valve
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).
P21126
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:
− IDLE AIR CONTROL (IAC) VALVE
Engine at normal operating temperature
S
Idle speed check correctly
S
Transmission in neutral position
S
A/C switch OFF
S
09843−18020
09843−18020
Engine at normal operating temperature
S
Idle speed check correctly
S
Transmission in neutral position
S
A/C switch OFF
S
Author :
SF−39
SF0CI−03
Date : 1045