Error Code 1222 - Low Voltage Detected at Ambient Air Pressure Sensor Circuit - Cont

Error Code 1222 - Low Voltage Detected at Ambient Air Pressure Sensor Circuit - Cont - TM-10-3930-675-20-1_379

Error Code 1222 - Low Voltage Detected at Ambient Air Pressure Sensor Circuit - Cont - TM-10-3930-675-20-1_381

TM-10-3930-675-20-1 Rough Terrain Container Handler (RTCH): RT 240; 53 000 Lb Capacity; 4x4 Manual
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TM 10-3930-675-20-1 0021 00-8 ENGINE AMBIENT AIR PRESSURE SENSOR AND CIRCUITS TROUBLESHOOTING - CONTINUED 0021 00 Table 2. Error Code 1222 - Low Voltage Detected at Ambient Air Pressure Sensor Circuit Troubleshooting Procedures - Continued. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Error Code 1222 - Low Voltage Detected at Ambient Air Pressure Sensor Circuit - Continued 6. Install breakout cable between sensor and sensor harness connector and place ignition switch in ON position. Measure signal voltage from pin C to pin B of breakout cable. Voltage should be as follows: If voltage is not as specified, proceed with the following steps. Altitude (Ft.) vs. Voltage 0 = 3.4-4.5V 3K = 2.8-3.8V 6K = 2.2-3.2V 9K = 1.7-2.7V 12K = 1.2-2.2V 7. Place ignition switch to OFF position and disconnect ambient air pressure sensor from engine harness. Disconnect sensor harness connector from ECU. 8. Measure resistance from pin 6 of sensor harness connector to chassis ground. Measurement should be greater than 100k ohms. If measurement is not as specified, notify SRA to replace engine harness.

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