TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
Page 416 of 1205
TM 9-2320-387-24-l INSTRUMENTS CIRCUIT AIR FILTER RESTRICTION GAUGE OK VACUUM TUBE OK 1 POSSIBLE PROBLEMS 1 WIRING SWITCH MOTOR CIRCUIT BREAKER 1 PCB KNOWN INFO WIRE 27C OK POSSIBLE PROBLEMS , WIRING SWITCH MOTOR CIRCUIT BREAKER 1 PCB KNOWN INFO WIRE 27C OK WIRE 27D OK CIRCUIT BREAKER 1 OK POSSIBLE PROBLEMS WIRING SWITCH MOTOR PCB REMOVE WIRE 27C FROM CIRCUIT BREAKER 1. WITH THE ROTARY SWITCH IN THE RUN POSITION, IS THERE BATTERY VOLTAGE AT WIRE 27C AT CIRCUIT BREAKER 1? T OPTIONS 1. STEIICE-R TEST 89 (Page 2-506) 2. MULTIMETER REASON FOR QUESTION Voltage here indicates that wiring to the circuit breaker is OK. p2 1 TEST OPTIONS I RECONNECT WIRE 27C. REMOVE WIRE 27D FROM THE HEATER FAN SWITCH. WITH THE ROTARY SWITCH IN THE RUN POSITION, IS THERE BAI-l-ERY VOLTAGE AT WIRE 27D? I 1. STIYICE-R TEST 89 (Page 2-506) I 2. MULTIMETER 1 I- REASON FOR QUESTION If you have voltage here, the circuit breaker and wiring to the switch is OK. FAN MOTOR. WITH THE ROTARY I 2. MULTIMETER SWITCH IN THE RUN POSITION AND THE HEATER FAN SWITCH ON HIGH, IS THERE BATTERY VOLTAGE AT WIRE 400D? 2-362