TM 5-3805-294-23-1
0057
Table 1. DTC 637.02 - Crankshaft Position Signal Invalid - Continued.
Test or Inspection
Corrective Action
Malfunction
3.
Visually inspect ECU
1.
If damaged or has loose pins,
connector J03 for damage and
replace ECU. (Volume 4,
loose pins.
WP 0508) Restore machine 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 7.
Visually inspect engine wiring
1.
If damaged or has loose
7.
Engine Wiring
harness connector J03 for
sockets, replace engine wiring
Harness Connector
damage and loose sockets.
harness. (Volume 4,
J03 Has Damage or
Loose Sockets.
(Volume 5, WP 0800, Figure
WP 0510) Restore machine to
48)
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 8.
Measure resistance (Volume
1.
If greater than 1 kohm,
8.
Short Circuit
proceed to Malfunction 9.
Between Engine
3, WP 0369) between engine
Wiring Harness
wiring harness connector J03
2.
If less than 1 kohm, replace
Connector J03
socket F3 (Volume 5,
engine wiring harness.
Socket F3 and
WP 0800, Figure 48) 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)
Measure resistance (Volume
1.
If less than 10 ohms, proceed
9.
Open Circuit
to Malfunction 10.
Between Engine
3, WP 0369) between engine
Wiring Harness
wiring harness connector J03
2.
If greater than 10 ohms,
Connector J03
socket F4 (Volume 5,
replace engine wiring
Socket F4 and
WP 0800, Figure 48) and
harness. (Volume 4,
Engine Wiring
engine wiring harness
WP 0510) Restore machine to
Harness Connector
connector X01 socket A.
original condition and perform
X01 Socket A.
(Volume 5, WP 0800, Figure
Harness Diagnostic Mode
82) Note reading.
Test. (Volume 3, WP 0345)
0057-4