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That circuit requires pressure to "disengage" the MFWD, and no pressure to engage the MFWD. Was the pressure to the MFWD checked (the test port between the bottom 2 solenoids)?
No sir , only changed the solenoid and switch , its getting full voltage and the solenoid is activating , repair manual says mfwd is spring applied and hydraulic pressure released , possibly the spring failed inside or can the incorrect pressure cause this to malfunction ? Do you know what the port pressure should be ? Thank you sir , any additional input would be appreciated