Toyota Camry Manual page 2634

SF–42
DLC1
E1
TE1
DLC1
SFI (1MZ–FE)
SST
S04529
RSC
+B
RSO
Ohmmeter
S04533
– IDLE AIR CONTROL (IAC) VALVE
IDLE AIR CONTROL (IAC) VALVE
ON–VEHICLE INSPECTION
1. INSPECT IAC VALVE OPERATION
(a) Initial conditions:
D
Engine at normal operating temperature
D
Idle speed checked correctly
D
Transmission in neutral position
D
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
Hot
If resistance is not as specified, replace the IAC valve.
(c) Reconnect the IAC valve connector.
3. INSPECT AIR ASSIST SYSTEM
(a) Initial conditions:
D
Engine at normal operating temperature
D
Idle speed checked correctly
D
Transmission in neutral position
D
A/C switch OFF
Author :
17.0 – 25.0 Ω
21.5 – 29.5 Ω
Date :
SF07Y–03
1541