TM 5-3810-307-24-1-1
(c) If signal is correct, proceed to
a.
If correct, proceed to Gear Selector Input
step (3).
Diagnostics.
(3)
Check that socket 8 (full throttle
b.
If rpm is less than range, check throttle
switch input) has 24 vDC signal
cable and throttle assembly for proper
at idle and drops out when
installation, Refer to THROTTLE AIR
engine reaches 2250-2350 rpm.
CYLINDER AND THROTTLE LINKAGE
Installation procedures, Section 2.
(a) If signal is not present or
does not drop out, check full
Gear Selector Input Diagnostics
throttle switch. Switch should
be closed until rpm setting is
1.
Disconnect relay box harness (rectangular
reached.
Correct and
connector) from APC 100 control box.
recheck operation.
2.
Position ignition switch to 1 (run).
(b) If signal drops out at wrong
rpm setting, adjust full throttle
3.
Place transmission shift lever in each position
switch by slightly loosening
and check input signals (voltages) at sockets 1, 2,
the mounting screws (33,
20, 21, and 22 for 24 vDC or 0 v. Readings should
match those in Table 2-3-6.
screw (36) clockwise to
decrease rpm setting and
a.
If all input signals are correct, proceed to
counterclockwise to increase
Speed Sender Input Diagnostics.
setting. Correct and recheck
operation.
b.
If input signals are incorrect, check the
APC fuse and relay box for faults
NOTE
between the manual mode relays and
APC 100 harness connector. Faults in
A slight reduction in rpm setting usually
the rest of the relay box would create
occurs as mounting screws are
symptoms
during
manual
mode
tightened.
Therefore, adjust toward
operation and would be detected during
upper end of rpm range.
that diagnosis. Correct any fault(s) and
recheck operation.
3.
Check maximum engine RPM by increasing
engine speed to full throttle (2500-2800 rpm).
SOCKET ID (RELAY
TRANSMISSION
TRANSMISSION SHIFT LEVER POSITION
BOX HARNESS)
SOLENOID NAME
F1
F2
F3
F4
F5
F6
N
R3
R2
R1
22
Splitter
24
24
24
1
Forward
24
24
24
24
24
24
21
2nd Range
24
24
24
24
24
24
2
1st Range
24
24
24
20
Reverse
24
24
24
2-3-32
