TM 10-3930-675-20-1
0017 00-6
ENGINE ELECTRONIC CONTROL UNIT (ECU) TROUBLESHOOTING - CONTINUED
0017 00
Table 2. Error Code 1227 - Sensor Voltage Supply Failure Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 1227 - Sensor Voltage Supply Failure
1. Place ignition switch to OFF
position
and
disconnect
sensor
harness
connector
from engine ECU.
a. Inspect engine harness and
sensor connector for dirty,
corroded, bent, broken,
pushed back, and extended
pins.
Clean and repair connector(s) as
required (WP 0111 00).
b. Check engine harness and
engine ECU connector for
dirt or moisture in or on
connector and for missing
or
damaged
connector
seals.
Remove dirt and moisture from
connector. Replace missing or
damaged connector seals (WP
0111 00).
2. Disconnect sensor harness
and actuator harness from
engine ECU. Place ignition
switch to ON position.
a. Measure supply voltage out
of engine ECU sensor port
at pins 18, 25, and 45 to
ground. Voltage should be
4.75-5.25V.
If voltage is not as specified,
replace engine ECU (WP 0078
00).
4.75-5.25V
4.75-5.25V
USE TEST LEAD KIT P/N 3822917
ACTUATOR
PORT
SENSOR
PORT
