TM 9-2320-387-24-l
TRANSMISSION
SYSTEM
DIAGNOSTIC FLOWCHART
NOTE
The following diagnostics will help isolate and
repair problem circuits, wires, pins, connectors,
sensors, circuit breakers, and solenoids.
For repair of all wiring, refer to para. 4-80.
Check connector pins before inserting probes.
Jl CABLE DIAGNOSTICS
CHART
Jl Voltage Measurements With Ignition ON, Engine OFF,
and Glow Plug Controller Disconnected. Refer to Para. 4-33.
CKT NOM.
CKT#
PIN
TO
PIN
EXP READ
IGN PWR
291 D
i
a or b
12VDC
Battery Pos
537D
Z
a or b
12VDC
Trans Lp
657A
U’
a or b
LED Lights
Brake SW
8108
W
a or b
12V (Brake OFF)
Brake SW
8108
W
aorb
0 (Brake ON)
Jumper wire from U to a or b.
Reconnect Glow Plug Controller. Refer to Para. 4-33. Jl Voltage
Measurement With Ignition ON, Engine ON, Transmission in PARK.
CKT NOM.
CKT#
PIN
TO
PIN
EXP READ
Engine rpm
349A
h
c or p
0.3 volt
min @I idle
Press SW A
765A
Press SW B
763A
Press SW C
764A
a or b
a or b
a or b
Open wire
OTO 1 ohm
Open wire
Jl
-
2-402
