TM 10-3930-675-20-1
0017 00-2
ENGINE ELECTRONIC CONTROL UNIT (ECU) TROUBLESHOOTING - CONTINUED
0017 00
Table 1. Error Code 1187 - Sensor Voltage Supply Failure Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 1187 - Sensor Voltage Supply Failure
- Continued
3. Measure voltage from oil
pressure/temperature sensor
connector pin A to pin B.
Voltage should be less than
4.5V.
If voltage is not as specified,
replace oil pressure/temperature
sensor (WP 0093 00).
4. 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).
<4.5V
USE TEST LEAD
KIT P/N 3822758