TM 10-3930-675-20-1
0020 00-6
ENGINE TEMPERATURE SENSORS AND CIRCUITS TROUBLESHOOTING - CONTINUED
0020 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
Circuit Failure
1. Ensure that ignition switch is
in OFF position. Disconnect
sensor harness from coolant
temperature sensor (WP 0093
00).
a. Inspect coolant temper-
ature sensor and sensor
harness
connectors
for
dirty,
corroded,
bent,
broken, and pushed back or
extended pins.
Clean and repair connector(s) as
required (WP 0111 00).
b. Check coolant temperature
sensor and sensor harness
for dirt or moisture in or on
connectors and for missing
or
damaged
connector
seals.
Remove dirt and moisture from
connector. Replace missing or
damaged connector seals (WP
0111 00).
2. Place ignition switch in OFF
position
and
disconnect
engine harness from coolant
temperature sensor.
3. Measure resistance from pin
A (or 1) to pin B (or 2) of
coolant temperature sensor.
Resistance should be 300-90k
ohms.
If resistance is not as specified,
replace coolant temperature
sensor (WP 0093 00).
USE TEST LEAD KIT P/N 3822758
300-90K OHMS
