TM 10-3930-675-24-1
TRANSMISSION SPEED SENSORS TROUBLESHOOTING - CONTINUED
0027 00
Table 3. Error Code 651 - Engine Speed Sensor
Failure, Logical Error Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 651 - Engine Speed Sensor Failure, Place ignition switch in OFF
If error code is still present,
Logical Error.
position for 30 seconds and then
perform troubleshooting pro-
back in ON position.
cedures for error code 649.
Table 4. Error Code 652 - Turbine Speed Sensor Failure, Open
Circuit or Short Circuit to Battery Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 652 - Turbine Speed Sensor Failure, 1. Check connector and pins.
If resistance is not as specified,
Open Circuit or Short Circuit to Battery.
Disconnect connector X173
move the cab to the transport
located in the middle panel
position (TM 10-3930-675-10)
behind the operator seat.
and remove the transmission
Check resistance at the loose
front access cover (WP 0142 00).
part of connector X173
between pins 6 and 7 (WP
should be 950 to 1,150 Ohms.
2. Check resistance. Disconnect
If resistance is not as specified or
and inspect the 751 turbine
the 751 turbine speed sensor is
speed sensor located on the left
damaged, replace the 751 turbine
side of the transmission. Check
speed sensor (WP 0096 00).
resistance of the 751 turbine
speed sensor between the two
pins (WP 0048 00-14).
Resistance should be 950 to
1,150 Ohms.
3. Inspect the 751 connector and
If continuity is not present in
pins for damaged and proper
either wire or connector 751 is
connection. Check continuity
damaged, notify Sustainment
of wires 1736 and 1737 (WP
Maintenance to replace engine
0048 00-14).
and transmission wiring harness.
0027 00-4
