KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
REASON FOR TESTS
NO
YES
NO
YES
2-318.12 Change 1
D1
REPAIR/REPLACE
WIRE 459B
D2
REPLACE
WIRE 583A AND/OR
569C
D3
GLOWPLUGS
OPEN CIRCUIT IN GLOW-
PLUG CONTROLLER OR
WIRING
WIRING
GLOWPLUG
CONTROLLER
1. STE/ICE-R TEST 91
(Page 2-752)
2. MULTIMETER
1. STE/ICE-R TEST 91
(Page 2-752)
2. MULTIMETER
IS THERE CONTINUITY BETWEEN
DISTRIBUTION BOX ENGINE
CONNECTOR HARNESS SOCKET “B”
AND GLOWPLUG CONTROLLER
HARNESS CONNECTOR SOCKET “3”?
IS THERE CONTINUITY BETWEEN
DISTRIBUTION BOX ENGINE
CONNECTOR HARNESS SOCKET “A”
AND GLOWPLUG CONTROLLER
HARNESS CONNECTOR SOCKET “6” ?
This checks the return wire from
the glowplug controller to the
distribution box.
This checks the main power wire
from the distribution box to the
glowplug controller.
You verified that the wiring is OK
so the controller must be bad.
REPLACE GLOWPLUG CONTROLLER.
DOES THE ENGINE START EASILY
WHEN COLD?
OPEN CIRCUIT IN GLOW-
PLUG CONTROLLER
OR WIRING
WIRING
GLOWPLUG
CONTROLLER
DIAGNOSTIC FLOWCHART
D
FROM C3,
Page 2-318.10
TM 9-2320-280-20-1
NO
YES
GO TO C,
Page 2-110
NO FAULTS
