TM 10-3930-671-24 c) Check    battery    negative    (ground)    cable    and connections.      Connect   a   voltmeter   from   the negative battery terminal to the bolt that mounts the     battery     negative     cable     to     the     ground connection    on    the    engine    or    frame.        While cranking  the  engine,  a  voltmeter  reading  higher than   0.4   volts   indicates   excessive   resistance. Check   the   cable   for   loose   connections   or   the battery terminal for corrosion.  Clean and tighten the terminal post and cable ends. d)  To  check  negative  post  battery  terminal  connection, refer to positive post test above. e) Check   key   switch,   starter   relay,   and   solenoid circuit.  Connect a voltmeter across the "Battery" terminal of the solenoid and the "Switch" terminal of  the  solenoid.    A  voltmeter  reading  of  1.02.0 volts  is  expected  with  the  engine  cranking.    A reading of more than 2 volts indicates excessive resistance.    Check  the  wiring,  connections,  and switches in this portion of the circuit. f ) Check the starter solenoid disc contact. Connect a voltmeter across the solenoid "Battery" terminal and the solenoid motor terminal.    With  the  engine  cranking,  a  voltage reading    of     less     than     0.2     volts     should     be measured.      A   reading   higher   than   0.2   volts indicates excessive resistance within the solenoid.    Check  the  solenoid  contact  disc  and terminals. F-304