Frequency Solenoid B
- Disconnect hose number 30 from frequency solenoid valve B. Plug inlet pipe at frequency solenoid valve B. Disconnect hose number 31 from frequency solenoid valve B and connect a vacuum pump. See Fig 1 .
- Apply vacuum to frequency solenoid valve B. If valve holds vacuum, replace frequency solenoid valve B and retest. If valve does not hold vacuum, apply 12 volts to frequency solenoid valve B.
- If frequency solenoid valve B holds vacuum, valve is okay. If frequency solenoid valve B does not hold vacuum, replace and retest.