TM 10-3930-675-24-1
ENGINE AMBIENT AIR PRESSURE SENSOR AND CIRCUITS TROUBLESHOOTING - CONTINUED
0022 00
Table 1. Error Code 1221 - High Voltage Detected at
Ambient Air Pressure Sensor Circuit Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 1221 - High Voltage Detected at 12. Place ignition switch in OFF Clean and repair connector(s) as
position and disconnect required (WP 0113 00).
Ambient Air Pressure Sensor Circuit - Continued.
sensor harness connector
from ECU and disconnect
engine harness from ambient
air pressure sensor.
13. Check for open circuit in a. If resistance is as specified,
return wire by measuring
replace ambient air pressure
resistance from pin 31 of
sensor (WP 0094 00).
sensor harness connector to b. If engine harness requires
engine
block
ground.
replacement,
notify
Resistance should be less than
Sustainment Maintenance.
10 Ohms.
<10 Ohms
0022 00-5
