TM 10-3930-675-24-1
ENGINE TEMPERATURE SENSORS AND CIRCUITS TROUBLESHOOTING - CONTINUED
0021 00
Table 1. Error Code 1144 - Coolant Temperature
Sensor Circuit Failure Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 1144 - Coolant Temperature Sensor 5. Place ignition switch in OFF If engine harness requires
Circuit Failure - Continued.
position. Disconnect engine replacement, notify Sustainment
harness
from
coolant Maintenance.
temperature
sensor
and
disconnect sensor harness
connector from engine ECU.
Perform
the
following
resistance checks:
2 of sensor harness
connector to all other pins.
Resistance should be greater
than 100k Ohms.
3 of sensor harness
connector to all other pins.
Resistance should be greater
than 100k Ohms.
>100K Ohms
USE TEST LEAD KIT
P/N 3822758
6. Place ignition switch in OFF If engine harness requires
position. Disconnect engine replacement, notify Sustainment
harness
from
coolant Maintenance.
temperature
sensor
and
disconnect sensor harness
from engine ECU. Perform the
following resistance checks.
0021 00-4