TM 5-3805-294-23-1
0026
TROUBLESHOOTING PROCEDURE
Table 1. DTC 105.03 - Manifold Air Temperature Signal Out Of Range High.
Test or Inspection
Corrective Action
Malfunction
1.
Verify the key switch is in the
1.
Engine Wiring
OFF position (TM
Harness Connector
5-3805-294-10). (Volume 5,
T02 Has Damage or
Loose Sockets.
WP 0794)
2.
Disconnect engine wiring
harness connector T02 from
manifold air temperature
(MAT) sensor. (Volume 5,
WP 0800, Figure 68)
3.
Inspect connector T02 for
1.
If damaged or has loose
damage and loose sockets.
sockets, repair connector T02
(Volume 4, WP 0511) or
replace engine wiring
harness. (Volume 4,
WP 0510) Restore machine to
original condition and perform
Harness Diagnostic Mode
Test. (Volume 3, WP 0345)
2.
If not damaged and does not
have loose sockets, proceed to
Malfunction 2.
Visually inspect MAT sensor
1.
If damaged or has loose pins,
2.
MAT Sensor Has
for damage and loose pins.
replace MAT sensor. (Volume
Damage or Loose
Pins.
(Volume 5, WP 0800, Figure
3, WP 0439) Restore machine
68)
to original condition and
perform Harness Diagnostic
Mode Test. (Volume 3,
WP 0345)
2.
If not damaged and does not
have loose pins, proceed to
Malfunction 3.
Measure resistance (Volume
1.
If less than 5 ohms, proceed to
3.
Open Circuit
Malfunction 4.
Between Engine
3, WP 0369) between engine
Wiring Harness
wiring harness connector T02
2.
If greater than 5 ohms, replace
Connector T02
socket B (Volume 5,
engine wiring harness.
Socket B and
WP 0800, Figure 68) and
(Volume 4, WP 0510) Restore
Ground.
known good ground. Note
machine to original condition
reading.
and perform Harness
Diagnostic Mode Test.
(Volume 3, WP 0345)
0026-2