TM 9-2320-387-24-l
GLOW PLUGS CIRCUIT
KNOWN INFO
GLOW PLUG CURRENT
OK
PCB OK
GLOW PLUGS NOT
CYCLING
POSSIBLE
PROBLEMS
WIRING
GLOW PLUG
CONTROLLER
KNOWN INFO
GLOW PLUG CURRENT Or
PCB OK
GLOW PLUGS NOT
CYCLING
POSSIBLE
PROBLEMS
WIRING
GLOW PLUG
CONTROLLER
DIAGNOSTIC FLOWCHART
1
DISCONNECT BAll-ERY
NEGATIVE
CABLE. DISCONNECT PCB ENGINE
CONNECTOR. IS THERE CONTINU-
ITY FROM ENGINE CONNECTOR
HARNESS SOCKET C TO GLOW
PLUG CONTROLLER HARNESS
SOCKET 4?
1. STEIICE-R TEST 91
(Page 2-509)
2. MULTIMETER
REASON FOR QUESTION
Wire 570A controls
glow plug cycling.
RECONNECT PCB ENGINE
CONNECTOR.
IS THERE
CONTINUITY FROM GLOW PLUG
CONTROLLER HARNESS SOCKET 5
TO ENGINE GROUND?
TEST OPTIONS
1. STUICE-R
TEST 91
(Page 2-508)
2. MULTIMETER
REASON FOR QUESTIONS
The controller can’t work
properly without a proper
ground.
2-302
