911 SC Cabriolet F6-2994cc 3.0L SOHC (1983)
Auxiliary Air Valve (Idle Speed): Testing and Inspection
CHECKING AUXILIARY AIR REGULATOR
1. Remove auxiliary air regulator.
2. Connect ohmmeter to both terminals of auxiliary air regulator and check. Specifications: approx 33 ohm
3. Check power supply of auxiliary air regulator.
a) Pull off standard relay in luggage compartment (rear relay as seen in driving direction).
b) Bridge terminals 30 and 87a, turn on ignition.
c) Connect lest lamp to both auxiliary air regulator terminals from which the plugs have been pulled off.
4. Refer to 'Troubleshooting Automatic Choke" for other checks.