Conquest TSI L4-2555cc 2.6L Turbo VIN N FI (1987)
Idle Speed/Throttle Actuator - Electronic: Testing and Inspection
Idle Speed Switch
Fig. 30 Idle switch test. 1987-89
1.
Disconnect electrical connector from ISC servo with ignition off.
2.
Check for continuity between connector terminal 2, Fig. 30, and injection mixer body (GND). Continuity should exist when throttle valve is in idle