T100 Regular Cab Pickup 2WD V6-3.4L (5VZ-FE) (1997)
Idle Speed/Throttle Actuator - Electronic: Component Tests and General Diagnostics
Component Inspection
IAC VALVE 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 AC valve.
On-Vehicle Inspection
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 seconds, check that it returns to idle speed. A 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).