TM 5-3805-298-23-1
0051
Table 1. 110 Engine Coolant Temperature Sensor Diagnostic Codes - Continued.
051
CID FMI CODE
TEST OR INSPECTION
CORRECTIVE ACTION
3. Connect MSD. Select C6.6 924
110-3 Engine Coolant
Diagnostic Code 110-3 Engine
and check for active diagnostic
Temperature Sensor Signal
Coolant Temperature Sensor Signal
codes (WP 0008).
Voltage Is Above Normal or
Voltage Is Above Normal Becomes
Inactive - Troubleshooting complete.
the Voltage Is Shorted High -
Continued
Diagnostic Code 110-3 Engine
Coolant Temperature Sensor Signal
Voltage Is Above Normal Remains
Active - Repeat troubleshooting from
the beginning.
NOTE
110-4 Engine Coolant
Temperature Sensor Signal
Always inspect wiring harness connectors that are involved in the circuit.
Voltage Is Below Normal or
Poor connections can often be the cause of a problem in an electrical
the Voltage Is Shorted Low
circuit. Verify that all connections in the circuit are clean and secure and
that all 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 wiring harness connection to
identify the correct wiring harness to replace.
Tag all wiring harnesses to aid in installation.
Perform this test only if condition is active.
DIAGNOSTIC CODE SET CONDITION
Engine ECM detects signal voltage from the engine coolant temperature sensor
is less than 0.2 Volts DC for more than eight seconds.
POSSIBLE CAUSE
Engine control wiring harness is shorted to ground.
Engine coolant temperature sensor is shorted.
Engine ECM.
Test Step 1. Check for Active
Diagnostic Codes.
1. Connect MSD. Select C6.6 924
Diagnostic Code 110-4 Active -
and check for active diagnostic
Proceed to step 2.
codes (WP 0008).
Diagnostic Code 110-4 Not Active -
Troubleshooting is complete.
2. Using MSD (WP 0008), check for
Diagnostic Code 262-3 or 262-4
active diagnostic code 262.
Active - Repair diagnostic code 262
first (WP 0005).
Diagnostic Code 262-3 or 262-4 Not
Active - Proceed to Test Step 2.
0051-4