CHAPTER 2: VEHICLE MAINTENANCE INSTRUCTIONSTM 9-2350-256-202-19 ELECTRICAL TROUBLESHOOTING-ContinuedHYDRAULIC RESERVOIR MONITORING SYSTEM SWITCHES AND LIGHTS-ContinuedWARNINGRemove all jewelry such as rings, dog tags,bracelets, etc. If jewelry contacts a metalsurface a direct short may result in instantheating of tools, damage to equipment, andinjury or death to personnel.ADisconnect flasher system panel wiring harness fromhydraulic oil high temperature light. Place red lead ofmultimeter in socket B of wire 627A and black lead toground. Turn MASTER switch on, place power controllever switch in ON position, and check for voltage. TurnMASTER switch and power control lever switch OFF. Ifvoltage is present, go to step C. If voltage is notpresent, go to step B.BReconnect flasher system panel wiring harness tohydraulic oil high temperature light. Disconnect wire627A of flasher system panel wiring harness from Y-connector at power control lever switch. Place red leadof multimeter on Y-connector terminal and black lead toground. Turn MASTER switch on, place power controllever switch in ON position, and check for voltage. TurnMASTER switch and power control lever switch OFF. Ifvoltage is present, repair/replace wire 627A of flashersystem panel wiring harness from Y-connector tohydraulic high temperature lamp (see paragraph 6-48).If voltage is not present, troubleshoot power controllever switch circuit.CPlace a jumper wire from socket B to pin B. Place redlead of multimeter on terminal of hydraulic oil hightemperature light and black lead to ground. TurnMASTER switch on, place power control lever switch inON position, and check for voltage. Turn MASTERswitch and power control lever switch OFF. If voltage ispresent, go to step D. If voltage is not present, replacehydraulic oil high temperature lamp (see paragraph 6-11).2-344
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