TM 5-3805-294-23-1
0052
Table 1. DTC 636.02 - High-Pressure Fuel Pump Position Signal Invalid - Continued.
Test or Inspection
Corrective Action
Malfunction
1.
Turn key switch to ON position,
13.
Intermittent Open
but DO NOT START ENGINE
Between Engine
(TM 5-3805-294-10). (Volume
Interface Wiring
Harness Connector
5, WP 0794)
J02 Sockets B2 and
L2.
2.
Measure voltage (Volume 3,
WP 0369) between engine
interface wiring harness
connector J02 sockets B2 and
L2 (Volume 5, WP 0800,
Figure 47) while gently
wiggling wiring harness. Note
any fluctuations in voltage.
3.
Turn key switch to OFF
1.
If voltage fluctuated, replace
position (TM 5-3805-294-10).
engine interface wiring
harness. (Volume 4,
(Volume 5, WP 0794)
WP 0509) Restore machine to
original condition and perform
Harness Diagnostic Mode
Test. (Volume 3, WP 0345)
2.
If voltage did not fluctuate,
proceed to Malfunction 14.
1.
Disconnect engine wiring
14.
Short Circuit
harness connector J01 from
Between Engine
Wiring Harness
ECU. (Volume 5, WP 0800,
Connector J03
Figure 46)
Socket G4 and All
Other Sockets on
Engine Wiring
Harness
Connectors J01 and
J03.
2.
Measure resistance (Volume
1.
If any measurement was less
than 1 kohms, replace engine
3, WP 0369) between engine
wiring harness. (Volume 4,
wiring harness connector J03
socket G4 (Volume 5,
WP 0510) Restore machine to
original condition and perform
WP 0800, Figure 48) and all
Harness Diagnostic Mode
other sockets on engine wiring
harness connectors J01
Test. (Volume 3, WP 0345)
(Volume 5, WP 0800, Figure
If all measurements were
2.
46) and J03. Note readings.
greater than 1 kohms, proceed
to Malfunction 15.
0052-6