Toyota T100 1996 Service Manual page 1062

RSC
+B
Battery
+B
RSO
Battery
1996 TOYOTA T100 (RM449U)
SFI (5VZ−FE)
Closed
P20109
Open
P20108
− IDLE AIR CONTROL (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 IAC valve.
SF−43
SF0CL−01