TM-9-2350-311-20-1 Maintenance Manual for Volume 1 M109 Hull Download
Page 393 of 1275
TM 9-2350-311-20-1 CONTINUED FROM STEP A B 1. Install HEATER indicator lamp. 2. Remove accessory control box cover (para 8-20). 3. Disconnect lead 400L from HEATER indicator lamp assembly. 4. Place red lead of multimeters on lead 407L and black lead to ground. 5. Turn MASTER switch ON, HEAT SELECTOR switch to LOW, and check for voltage. 6. Place red lead of multimeters on lead 400L and black lead to ground. 7. Turn MASTER switch ON, HEAT SELECTOR switch to LOW and check for voltage. 8. Turn MASTER and HEAT SELECTOR switches OFF. Is voltage present? Replace HEATER indicator lamp assembly (para 8-20). I Repair or replace lead 407L and/or END OF TASK 3-293 wiring harness (para 8-53).