TM 10-3930-675-24-1
ENGINE POSITION SENSOR CIRCUITS TROUBLESHOOTING
THIS WORK PACKAGE COVERS
Error Code 1115 - Engine Position Sensor Circuit Fail-
Error Code 1234 - Engine Overspeed Failure
ure
Error Code 1121 - Engine Position Sensor Circuit Fail-
ure
INITIAL SETUP
References
Tools and Special Tools
TM 10-3930-675-10
Test Lead, Female (Item 123, WP 0289 00)
Test Lead, Male (Item 124, WP 0289 00)
NOTE
Refer to WP 0004 00 for additional troubleshooting guidance, information, and illustrations that
locate critical components.
Refer also to illustration at end of work package for component location.
Table 1. Error Code 1115 - Engine Position
Sensor Circuit Failure Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 1115 - Engine Position Sensor Circuit 1. Ensure ignition switch is in
Failure.
OFF position. Disconnect
engine harness from engine
position sensor (WP 0094 00).
2. Inspect engine harness and Clean and repair connector(s) as
engine
position
sensor required (WP 0113 00).
connectors for dirty, corroded,
bent, broken, and pushed back
or extended pins.
Remove dirt and moisture from
3. Check engine harness and
engine position sensor for dirt
connector. Replace missing or
or moisture in or on connectors
damaged connector seals (WP
and for missing or damaged
0113 00).
connector seals.
4. Check for short circuit to If resistance is not as specified,
ground:
replace engine position sensor
(WP 0094 00).
