TM 5-3805-296-23-1
0023
Table 1. 0110 Engine Coolant Temperature Sensor Diagnostic Codes.
0023
CID FMI
TEST OR INSPECTION
CORRECTIVE ACTION
NOTE
0110-03 Engine Coolant
Temperature Sensor Voltage
Always inspect harness connectors that are involved in the circuit. Poor
Above Normal or Engine
connections can often be the cause of a problem in an electrical circuit.
Coolant Temperature
Verify that all connections in the circuit are clean and secure and that all
Parameter Is 40
connections are in good condition. If a problem with the connection is
found, correct the problem and verify that this malfunction or diagnostic
code is active before performing this procedure.
Perform open or short-circuit test at each harness connection to identify
the correct harness to replace.
Tag all wiring harnesses to aid in installation.
Perform this test only if condition is active with engine running.
DIAGNOSTIC CODE SET CONDITION
Engine ECM Detects Above Normal Voltage on Coolant Temp Sensor Signal
Circuit 995.
POSSIBLE CAUSE
Basic Engine Wring Harness High Resistance, Open, or Shorted.
Coolant Temperature Sensor.
Engine ECM.
Test Step 1. Test Coolant Temp
Sensor Signal Voltage.
1. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-3805-296-10).
2. Disconnect connector CM-C10
(WP 0012, Figure 28) from coolant
temperature sensor connector
(WP 0012, Figure 27).
3. Turn battery disconnect switch and
ignition switch to ON position
(TM 5-3805-296-10).
4. Using digital multimeter
Voltage Greater Than 5.5 V Proceed
(WP 0540), test for voltage
to Test Step 2.
between connector CM-C10
Voltage 5.5 V or Less Proceed to
terminal 1 and terminal 2
Test Step 3.
(WP 0012, Figure 28).