TM 5-5420-226-20-1 Symptom-56 DETAILED TROUBLESHOOTING PROCEDURE T SUPPORT SYSTEM -  GAS   PARTICULATE (Continued) h f Check output side    of   gas   particulate switch for electrical power. Second Technician (Operator’s Station) l   Set   MASTER BATTERY switch OFF. l   Connect gas   particulate switch cable to   GAS PARTICULATE switch. l   Disconnect master control panel accessories harness connector (CKT 415)    from GAS PARTICULATE switch. l   Connect red    probe of   meter to   output side   of   GAS PARTICULATE switch (CKT 415)    and    black probe to   ground. l   Set    MASTER BATTERY switch ON. l   Set   GAS    PARTICULATE switch ON. l   Check    if  meter    indicates 18  to   30   volts. Does    meter indicate 18  to   30   voits? m I Repiace gas   particulate switch (page 10-62). ,=,, *J 5 -n m  + o II TO   VEHICLE GROUND GAS    PAFiTICULATE SWITCH OUTPUT Replace master controi panei accessories harness (page 10-91). TA107277 4-588