TM 10-3930-675-24-1
ENGINE TEMPERATURE SENSORS AND CIRCUITS TROUBLESHOOTING - CONTINUED
0021 00
Table 2. Error Code 1145 - Coolant Temperature
Sensor Circuit Failure Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 1145 - Coolant Temperature Sensor 1. Ensure ignition switch is in
Circuit Failure.
OFF position. Disconnect
sensor harness from coolant
temperature sensor (WP 0094
00).
a. Inspect coolant temper-ature Clean and repair connector(s) as
sensor and sensor harness required (WP 0113 00).
connectors
for
dirty,
corroded, bent, broken, and
pushed back or extended
pins.
b. Check coolant temperature
Remove dirt and moisture from
sensor and sensor harness
connector. Replace missing or
for dirt or moisture in or on
damaged connector seals (WP
connectors and for missing
0113 00).
or damaged connector seals.
2. Place ignition switch in OFF
position and disconnect engine
harness
from
coolant
temperature sensor.
3. Measure resistance from pin A If resistance is not as specified,
(or 1) to pin B (or 2) of coolant replace coolant temperature
temperature sensor. Resistance sensor (WP 0094 00).
should be 300 to 90k Ohms.
300-90K Ohms
USE TEST LEAD KIT P/N 3822758
0021 00-6
