TRANSMISSION SPEED SENSORS TROUBLESHOOTING - CONTINUED
Table 5. Error Code 653 - Turbine Speed Sensor Failure, Short
Circuit to Chassis Troubleshooting Procedures.
TEST OR INSPECTION
Error Code 653 - Turbine Speed Sensor Failure, 1. Check connector and pins.
If resistance is not as specified or
Short Circuit to Chassis.
Disconnect connector X173
continuity to ground is present,
located in the middle panel
move the cab to the transport
behind the operator's seat.
position (TM 10-3930-675-10)
Check resistance at the loose
and remove the transmission
part of connector X173
front access cover (WP 0142 00).
between pins 6 and 7 and check
should be 950 to 1,150 Ohms
with no continuity to ground.
2. Inspect sensor. Disconnect and
inspect the 751 turbine speed
continuity to ground is present, or
sensor located on the left side
the 751 turbine speed sensor is
of the transmission. Check
damaged, replace the 751 turbine
speed sensor (WP 0096 00).
speed sensor between the two
pins and check pin for
00-14). Resistance should be
950 to 1,150 Ohms with no
continuity to ground.
3. Inspect the 751 connector and
If continuity is not present in
pins for damage and proper
connection. Check continuity
is present, or connector 751 is
damaged, notify Sustainment
Maintenance to replace engine
and transmission wiring harness.
4. Check connector and pins. a. Repair or replace damaged
Disconnect ECU (793). Check
connector (WP 0113 00).
the connector and ECU pins 3 b. Replace damaged ECU (793)
and 41 for damage. Check
(WP 0080 00).
continuity and for continuity to c. Replace open or grounded
ground of wires A1736,