Jetta L4-1781cc 1.8L SOHC (1987)
Throttle Position Switch: Description and Operation
DIGIFANT II
Throttle Switches
The idle and full throttle switches are wired in parallel. The switches are mounted on the throttle housing.
A voltage signal is sent to the E.C.U. when the throttle switch and throttle plates are closed. The switch opens when the throttle has been opened
approximately 1°. The idle switch signal is used for:
- Operation of idle stabilizer valve
- Operation of deceleration fuel shut-off
- Activation of special ignition timing map for deceleration
The full throttle switch closes about 10° before full throttle. This signal is used for:
- Full throttle enrichment
