TM-9-2540-207-14-P
HEATER, VEHICULAR COMPARTMENT, MODEL: A20
TECHNICAL MANUAL; OPERATOR, FIELD, AND SUSTAINMENT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST
JULY 2007
TM-9-2540-207-14-P - Page 169 of 288
TM 9-2540-207-14&P
6-5
6.5
TROUBLESHOOTING FAULT CODES
6.5.1
C1 - IGNITOR FAILURE (Design Iteration 1 & 2 Only)
IGNITOR CIRCUIT IS NOT WORKING
CHECK/POSSIBLE CAUSE
REF
.R
EPAIR
1
CHECK THAT IGNITOR HATCH IS
INSTALLED CORRECTLY
4.1.1
INSTALL IGNITOR HATCH
RESTART HEATER
2
CHECK THAT WIRE IS CONNECTED TO
IGNITOR
4.1.1
CHECK SPRING WASHER ON IGNITOR POST.
PLACE WIRE ON POST
REPLACE HATCH COVER
RESTART HEATER
3
DEFECTIVE IGNITOR
4.1.1
REPLACE IGNITOR
RESTART HEATER
4
CHECK CONNECTOR TO ELECTRONIC
CONTROLLER BOARD IS PROPERLY
SEATED.
5.2-13
CHECK LOCKING TABS ARE FULLY ENGAGED.
5
DEFECTIVE ELECTRONIC PROGRAMMED
CONTROLLER BOARD
5.2.5
REPLACE ELECTRONIC PROGRAMMED CONTROLLER
RESTART HEATER
6
DEFECTIVE WIRING HARNESS
5.5.6
REPLACE WIRING HARNESS
RESTART HEATER
6.5.2
C1 – IGNITOR FAILURE (Design Iteration 3 Only)
IGNITOR (GLOW PLUG) CIRCUIT IS NOT WORKING PROPERLY OR OPEN
CHECK/POSSIBLE CAUSE
REF
.R
EPAIR
1
CHECK THAT IGNITOR HATCH IS
INSTALLED CORRECTLY
4.1.1
INSTALL IGNITOR HATCH
RESTART HEATER
2
CHECK THAT WIRE IS CONNECTED TO
IGNITOR
4.1.1
CHECK SPRING WASHER ON IGNITOR POST.
PLACE WIRE ON POST
REPLACE HATCH COVER
RESTART HEATER
3
CHECK FOR DEFECTIVE IGNITOR
4.1.1
MEASURE THE IGNITOR RESISTANCE,
IF IT IS NOT BETWEEN 1.6 TO 1.8 OHMS,REPLACE IGNITOR
RESTART HEATER
4
CHECK CONNECTOR TO FILTER BOARD IS
PROPERLY SEATED.
C
HECK LOCKING TABS ARE FULLY ENGAGED.
RESTART HEATER
5
CHECK FOR BROKEN WIRE
C
HECK CONTINUITY OF IGNITOR WIRE FROM TERMINAL RING TO
PIN 2 OF CONNECTOR P6.
IF NO CONTINUITY,
REPLACE WIRING HARNESS
RESTART HEATER
6
CHECK POWER IS SUPPLIED TO THE
POWER BOARD
M
EASURE SUPPLY VOLTAGE BETWEEN PINS J2 AND J7 ON THE
POWER BOARD.
IF SUPPLY VOLTAGE IS NOT PRESENT,
REPLACE THE FILTER BOARD.
RESTART HEATER
7
DEFECTIVE POWER BOARD
R
EPLACE POWER BOARD
RESTART HEATER
8
DEFECTIVE LOGIC BOARD
R
EPLACE LOGIC BOARD
RESTART HEATER
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