TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
Page 261 of 1205
I TM 9-2320-387-24-l ALTERNATOR DIAGNOSTIC FLOWCHART KNOWN INFO 1 OPTIONS 1. STEIlCE-R TESTS 67,68 (Pages 2496,2497) 2. MULTIMEI-ER BAllERY IS NOT CON- NECTED TO ALTERNATC WHEN ROTARY SWITCH IS IN RUN POSITION IS THE STARTER MOTOR VOLTAGE THE SAME AS BATTERY VOLTAGE? POSSIBLE PROBLEMS REASON FOR QUESTION PCB The cable connecting the batteries WIRING to the alternator goes to the starter first. KNOWN INFO . OPTIONS 3AlTERY IS NOT CON- NECTED TO ALTERNATOf WHEN ROTARY SWITCH IS IN RUN POSITION. BAllERIES CONNECTED TO STARTER 1. STE/ICE-R TESTS 67.89 (Pages 2496.2-506) DISCONNECT THE BAlTERY NEGATIVE CABLE. DISCONNECT ENGINE CONNECTOR AT PCB. RECONNECT THE BAITERY NEGATIVE CABLE. IS THERE BAITERY VOLTAGE AT PIN E OF THE PCB ENGINE CONNECTORHARNESS? 2. MULTIMETER REASON FOR QUESTION This checks the wire from the starter to the PCB engine connector. POSSIBLE PROBLEMS PCB WIRING I KNOWN INFO TEST OPTIONS REMOVE THE BATTERY NEGATIVE ‘. STUICE-R TEST g1 CABLE. IS THERE CONTINUITY (Page 2-508) BATTERY IS NOT CON- NECTED TO ALTERNATOR WHEN ROTARY SWlTCH IS IN RUN POSITION. BAl-fERIES CONNECTED TO STARTER 2. MULTIMETER -c I POSSIBLE PROBLEMS REASON FOR QUESTION If the box is connected to the alternator, the relay in the PCB is PCB WIRING SEE NOTE ON RIGHT HAND c 2-206