TM 10-3930-675-20-1
0018 00-1
ENGINE POSITION SENSOR CIRCUITS TROUBLESHOOTING
0018 00
THIS WORK PACKAGE COVERS
Error Code 1115 - Engine Position Sensor Circuit Fail-
ure
Error Code 1121 - Engine Position Sensor Circuit Fail-
ure
Error Code 1234 - Engine Overspeed Failure
INITIAL SETUP
References
TM 10-3930-675-10
Tools and Special Tools
Test lead, female (Item 50, WP 0204 00)
Test lead, male (Item 51, WP 0204 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 Failure
1. Ensure that ignition switch is
in OFF position. Disconnect
engine harness from engine
position sensor (WP 0093
00).
2. Inspect engine harness and
engine
position
sensor
connectors
for
dirty,
corroded, bent, broken, and
pushed back or extended pins.
Clean and repair connector(s) as
required (WP 0111 00).
3. Check engine harness and
engine position sensor 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).
4. Check for short circuit to
ground:
If resistance is not as specified,
replace engine position sensor
(WP 0093 00).
a. Measure resistance from
engine
position
sensor
connector pin A to engine
block ground. Resistance
should be greater than 100k
ohms.
