TM 10-3930-675-20-1
0020 00-7
ENGINE TEMPERATURE SENSORS AND CIRCUITS TROUBLESHOOTING - CONTINUED
0020 00
Table 2. Error Code 1145 - Coolant Temperature Sensor Circuit Failure Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 1145 - Coolant Temperature Sensor
Circuit Failure - Continued
4. Place ignition switch in OFF
position
and
disconnect
engine harness from coolant
temperature sensor. Perform
the
following
resistance
checks:
If resistance is not as specified,
replace coolant temperature
sensor (WP 0093 00).
a. Measure resistance from
pin A (or 1) of coolant
temperature
sensor
to
engine
block
ground.
Resistance
should
be
greater than 100k ohms.
b. Measure resistance from
pin B (or 2) of coolant
temperature
sensor
to
engine
block
ground.
Resistance
should
be
greater than 100k ohms.
5. Place ignition switch to OFF
position. Disconnect sensor
harness from engine ECU.
6. Ensure that ignition switch is
in OFF position. Disconnect
sensor harness from coolant
temperature sensor.
USE TEST LEAD KIT P/N 3822758
>100K OHMS
