PIPE 4W1350 - Caterpillar

P-348: Inlet Air Manifold Temperature Is Too High
This is NOT an electronic system problem. Refer to Systems Operation, Testing & Adjusting Manual for additional information on the following tests. Probable Root Causes:* High Inlet Air Manifold Temp Warning 105-00 The engine is running, the Inlet Air Manifold Temperature Sensor reading is greater than 90°C (194°F) for two seconds, Code 232-03 (+5VDC Supply Above Normal) or Code 232-04 (+5VDC Supply Below Normal) is not active, and Codes 105-03 or 105-04 are not active. The fault and Diagnostic code is logged. If Caterpillar Engine Monitoring is programmed to or DERATE the Warning Lamp comes On.* Very High Inlet Air Manifold Temp Warning 105-11. The engine is running, the Inlet Air Manifold Temperature sensor reading is greater than or equal to 109°C (228°F) for at least two seconds, Code 232-03 (+5VDC Supply Above Normal) or Code 232-04 (+5VDC Supply Below Normal) is not active, and Codes 105-03 or 105-04 are not active. The fault and event is logged. If Caterpillar Engine Monitoring is programmed to or DERATE the Warning Lamp comes On.* Incorrect fuel injection timing calibration* Low air inlet system pressure* Air inlet system has a restriction. Perform the following tests in order:1. Connect an Electronic Service Tool and check for Speed/Timing timing error. Refer to P-614: Engine Speed/Timing Sensor Calibration.2. Check pressure in the air inlet manifold. Check for air inlet leaks. Look for restrictions at the air cleaner. Check for leaks between inlet manifold and turbocharger. Repair or replace as necessary.3. Check for Air Inlet restrictions. Refer to Systems Operation Testing and Adjusting manual. Repair as necessary.P-349:Engine Has a High Fuel Temperature
This is NOT an electronic system problem. Refer to Systems Operation, Testing & Adjusting Manual for additional information on the following tests. Probable Root Causes:* High Fuel Temp Warning 174-00. The engine speed is greater than 1000 rpm, the fuel temperature sensor reading is greater than 90°C (194°F) for 30 seconds, Code 232-03 (+5V Supply Above Normal) or Code 232-04 (+5V Supply Below Normal) is not active, and Codes 174-03 or 174-04 are not active. The fault and Event is logged and the warning lamp is illuminated.* Improper Sensor Installation* Low Fuel Level* Poor Fuel Quality* Low Supply Pressure Perform the following tests in order:1. Verify that the Fuel Temperature Sensor has been correctly installed. Refer to Disassembly and Assembly Manual.2. Refer to P-339: Engine Has A Fuel Supply Problem.P-351: Cooling Fan Relay
This is NOT an electronic system problem. Refer to Systems Operation, Testing & Adjusting Manual for additional information on the following tests. Probable Root Causes:* Faulty Solenoid* Faulty Switch Perform the following tests in order:1. Turn keyswitch OFF and check ECM Connector J1/P1, Service Tool Connectors and associated wiring for damage, abrasion, corrosion or incorrect attachment. Refer to P-501: Inspecting Electrical Connectors2. Connect an Electronic Service Tool to the Service Tool connector. Check for any ACTIVE diagnostic codes. There should be no LOGGED or ACTIVE Coolant Temperature of