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Home >> Ford >> 1990 >> Bronco II RWD, Standard, M5OD-R1 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Test Kc - Air Management System (Am1/Am2) >> Test Kc: Step 5

Test Kc: Step 5

5) Check AM1/AM2 Solenoid Electrical Operation  Set DVOM on 20-volt scale. Connect DVOM positive test lead to VPWR circuit and negative test lead to AM1 circuit at AM1 solenoid vehicle harness connector. While observing DVOM, depress and release throttle several times to cycle output on and off. Repeat test for AM2 solenoid. Connect positive test lead to VPWR circuit and negative test lead to AM2 circuit on AM2 solenoid vehicle harness connector. Cycle AM2 solenoid on and off. If either solenoid does not cycle on and off, remove jumper and go to step 9). If both solenoids cycle on and off, go to next step.