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Table 1. DTC 637.10 - Crankshaft Position Signal Rate of Change Abnormal - Continued.
Table 1. DTC 637.10 - Crankshaft Position Signal Rate of Change Abnormal - Continued

Maintenance Manual For Hydraulic Excavator Type 1 With Hydraulic Thumb And Quick Latch -1 Page Navigation
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TM 5-3805-294-23-1
0062
Table 1. DTC 637.10 - Crankshaft Position Signal Rate of Change Abnormal - Continued.
Test or Inspection
Corrective Action
Malfunction
Visually inspect crankshaft
1.
If damaged or has debris,
6.
Crankshaft Position
position sensor tip for damage
replace crankshaft position
Sensor Has
and debris. (Volume 3,
Damage or Debris.
sensor. (Volume 3, WP 0405)
WP 0405)
Restore machine to original
condition and perform Harness
Diagnostic Mode Test.
(Volume 3, WP 0345) If
replacement sensor becomes
damaged, determine cause of
damage.
2.
If not damaged and does not
have debris, proceed to
Malfunction 7.
Measure resistance (Volume
1.
If between 2,500 - 3,500 ohms,
7.
Crankshaft Position
proceed to Malfunction 8.
Sensor Faulty.
3, WP 0369) between pins A
and B on crankshaft position
2.
If not between 2,500 - 3.500
sensor. (Volume 5, WP 0800,
ohms, replace crankshaft
Figure 82) Note reading.
position sensor. (Volume 3,
WP 0405) Restore machine to
original condition and perform
Harness Diagnostic Mode
Test. (Volume 3, WP 0345)
1.
Install crankshaft position
8.
ECU Connector J03
sensor, do not reconnect
Has Damage or
connector X01 to sensor.
Loose Pins.
(Volume 3, WP 0405)
2.
Disconnect engine wiring
harness connector J03 from
ECU. (Volume 5, WP 0800,
Figure 48)
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)
If not damaged and does not
2.
have loose pins, proceed to
Malfunction 9.
0062-4


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