TM 10-3930-675-24-1
ENGINE AMBIENT AIR PRESSURE SENSOR AND CIRCUITS TROUBLESHOOTING - CONTINUED
0022 00
Table 2. Error Code 1222 - Low Voltage Detected at Ambient
Air Pressure Sensor Circuit Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 1222 - Low Voltage Detected at 1. Ensure ignition switch is in
Ambient Air Pressure Sensor Circuit.
OFF position and disconnect
engine harness from ambient
air pressure sensor.
2. Inspect ambient air pressure Clean and repair connector(s) as
sensor and sensor harness required (WP 0113 00).
connectors
for
dirty,
corroded,
bent,
broken,
pushed back, and extended
pins.
3. Check ambient air pressure
Remove dirt and moisture from
sensor and sensor harness for
connector. Replace missing or
dirt or moisture in or on
damaged connector seals (WP
0113 00).
connector and for missing or
damaged connector seals.
4. Install
breakout
cable If voltage is not as specified,
between sensor and sensor proceed with the following steps.
harness connector. Place
ignition switch in ON position
and measure supply voltage
from pin A to pin B of
breakout cable. Voltage
should be 4.75 to 5.25V.
4.75-5.25V
0022 00-6
