TM 5-3805-294-23-1
0056
Control Unit Response
Prolonged cranking time may be required to start the engine.
The ECU will use the crankshaft sensor input to determine high-pressure fuel pump and pump position.
If a crankshaft sensor DTC accompanies 636.10, the engine cannot be started and will stall if running until at least
one of the two codes is repaired.
TROUBLESHOOTING PROCEDURE
Table 1. DTC 636.10 - High-Pressure Fuel Pump Position Signal Rate of Change Abnormal.
Test or Inspection
Corrective Action
Malfunction
1.
Turn key switch to ON position,
1.
Check For Open or
but DO NOT START ENGINE
Shorted Sensor
(TM 5-3805-294-10). (Volume
Circuit.
5, WP 0794)
2.
Perform Harness Diagnostic
Mode Test. (Volume 3,
WP 0345) Note if DTC 636.05
or 636.06 is an active DTC.
3.
Turn key switch to OFF
1.
If DTC 636.05 or DTC 636.06
position (TM 5-3805-294-10).
is active, discontinue test for
DTC 636.10 and perform test
(Volume 5, WP 0794)
for DTC 636.05 (WP 0053) or
DTC 636.06. (WP 0054)
2.
If DTC 636.05 and 636.06 are
not active DTCs, proceed to
Malfunction 2.
1.
Disconnect engine wiring
2.
Check For DTC
harness connector X01 from
Change With
crankshaft position sensor.
Crankshaft Position
Sensor
(Volume 5, WP 0800, Figure
Disconnected.
82) Secure sensor wiring away
from rotating parts.
2.
Turn key switch to ON position,
but DO NOT START ENGINE
(TM 5-3805-294-10). (Volume
5, WP 0794)
3.
Refresh DTCs. (Volume 3,
WP 0362)
4.
Attempt to START ENGINE
(TM 5-3805-294-10). (Volume
5, WP 0794)
0056-2