L-Series Wagon 4WD F4-1781cc 1.8L SOHC Turbo (MPFI) (1985)
Compressor/Pump Relay: Testing and Inspection
Fig. 8 Compressor relay terminal view
A10-COMPRESSOR RELAY
Connect a suitable 12 volt source to solenoid valve, then apply compressed air and check that air passes through solenoid. If air does not pass through
valve, replace.