Error Code 1221 - High Voltage Detected at Ambient Air Pressure Sensor Circuit - Cont

Error Code 1221 - High Voltage Detected at Ambient Air Pressure Sensor Circuit - Cont - TM-10-3930-675-20-1_376

Table 2. Error Code 1222 - Low Voltage Detected at Ambient Air Pressure Sensor Circuit Troubleshooting Procedures

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 00-5 ENGINE AMBIENT AIR PRESSURE SENSOR AND CIRCUITS TROUBLESHOOTING - CONTINUED 0021 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 Ambient Air Pressure Sensor Circuit - Continued 12.Place ignition switch in OFF position and disconnect sensor harness connector from ECU and disconnect engine harness from ambient air pressure sensor. Clean and repair connector(s) as required (WP 0111 00). 13.Check for open circuit in return wire by measuring resistance from pin 31 of sensor harness connector to engine block ground. Resistance should be less than 10 ohms. a. If resistance is as specified, replace ambient air pressure sensor (WP 0093 00). b. If engine harness requires replacement, notify SRA. <10 OHMS

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