TM 10-3930-675-24-1
TRANSMISSION SPEED SENSORS TROUBLESHOOTING - CONTINUED
0027 00
Table 5. Error Code 653 - Turbine Speed Sensor Failure, Short
Circuit to Chassis Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
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
pin for continuity to ground
should be 950 to 1,150 Ohms
with no continuity to ground.
2. Inspect sensor. Disconnect and
If resistance is not as specified,
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
resistance of the 751 turbine
speed sensor (WP 0096 00).
speed sensor between the two
pins and check pin for
continuity to ground (WP 0048
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
either wire, continuity to ground
connection. Check continuity
is present, or connector 751 is
and for continuity to ground of
damaged, notify Sustainment
wires 1736 and 1737 (WP
Maintenance to replace engine
0048 00-14).
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,
wire.
A1735A, and A1735B (WP
0048 00-14).
0027 00-6
