TM 5-3805-294-23-1
0061
Table 1. DTC 637.08 - Crankshaft Position Signal Missing - Continued.
Test or Inspection
Corrective Action
Malfunction
Measure resistance (Volume
1.
If any measurement was less
14.
Short Circuit
than 1 kohm, replace engine
Between Engine
3, WP 0369) between engine
wiring harness (Volume 4,
Wiring Harness
wiring harness connector J03
Connector J03
socket F4 (Volume 5,
WP 0510) and replace engine
Socket F4 and All
interface wiring harness.
WP 0800, Figure 48) and all
Other Sockets on
other sockets on engine
(Volume 4, WP 0509) Restore
Engine Interface
interface wiring harness
machine to original condition
Wiring Harness
connector J02. (Volume 5,
and perform Harness
Connector J02.
Diagnostic Mode Test.
WP 0800, Figure 47) Note
readings.
(Volume 3, WP 0345)
2.
If all measurements were
greater than 1 kohm, proceed
to Malfunction 15.
1.
Turn key switch to ON position,
15.
Short Circuit
but DO NOT START ENGINE
Between Engine
(TM 5-3805-294-10). (Volume
Wiring Harness
Connector J03
5, WP 0794)
Socket F4 and
Ground.
2.
Measure voltage (Volume 3,
WP 0369) between engine
wiring harness connector J03
socket F4 (Volume 5,
WP 0800, Figure 48) and
known good ground. Note
reading.
3.
Turn key switch to OFF
1.
If less than 0.5 volts, proceed
position (TM 5-3805-294-10).
to Malfunction 16.
(Volume 5, WP 0794)
2.
If greater than 0.5 volts,
replace engine wiring
harness. (Volume 4,
WP 0510) Restore machine to
original condition and perform
Harness Diagnostic Mode
Test. (Volume 3, WP 0345)
Verify if crankshaft position
1.
If sensor was replaced,
16.
Replace Crankshaft
sensor was replaced during
proceed to Malfunction 17.
Position Sensor.
this troubleshooting
If sensor was not replaced,
2.
procedure.
proceed to Malfunction 18.
1.
Install crankshaft position
17.
ECU Faulty.
sensor. (Volume 3, WP 0405)
2.
Replace ECU. (Volume 4,
WP 0508)
0061-6