CYLINDER & MTG GP-STEERING 2669701 - Caterpillar

Primary Speed/timing Sensor
Disconnect the P401 connector from the primary speed/timing sensor.
Attempt to start the engine.
If the engine starts, check for a fault in the circuit for the primary speed/timing sensor. Refer to Troubleshooting, "Engine Speed/Timing Sensor Circuit - Test".
If the engine does not start, inspect the timing ring on the crankshaft for misalignment.
If necessary, repair the timing ring. Refer to Disassembly and Assembly, "Crankshaft Timing Ring - Remove and Install".
Attempt to start the engine. If the engine will not start, proceed to "Low Pressure Fuel System". Low Pressure Fuel System
If the temperature is below 0 °C (32 °F), check for solidified fuel (wax).
Check for fuel supply lines that are restricted.
Check that the low pressure fuel lines are correctly installed.
Check the diesel fuel for contamination. Refer to Systems Operation, Testing and Adjusting, "Fuel Quality - Test".
Check for air in the fuel system. Refer to Systems Operation, Testing and Adjusting, "Air in Fuel - Test".
Ensure that the fuel system has been primed. Refer to Systems Operation, Testing and Adjusting, "Fuel System - Prime".
Attempt to start the engine. If the engine will not start, continue with this procedure.
Replace the primary fuel filter and the secondary fuel filter. Refer to the Operation and Maintenance Manual, "Fuel System Primary Filter (Water Separator) Element - Replace".
Attempt to start the engine. If the engine will not start, continue with this procedure.
Check the flow of fuel through the transfer pump. If the flow of fuel through the transfer pump is less than 250 mL per minute at 150 rpm, replace the transfer pump. Refer to Disassembly and Assembly, "Fuel Transfer Pump - Remove" and Disassembly and Assembly, "Fuel Transfer Pump - Install".
Attempt to start the engine. If the engine will not start, proceed to "Secondary Speed/timing Sensor". Secondary Speed/timing Sensor
Connect the electronic service tool to the diagnostic connector.
Check that the desired fuel rail pressure is at least 25 MPa (3625 psi) when the engine is cranking.
If the desired fuel rail pressure is less than 25 MPa (3625 psi), perform the following procedure:
Use the electronic service tool to check the signal from the secondary speed/timing sensor while the engine is cranking.
If the signal from the secondary speed/timing sensor is 0 rpm, investigate the secondary speed/timing sensor. Refer to Troubleshooting, "Engine Speed/Timing Sensor Circuit - Test".
If a fault is identified in the circuit for the secondary speed/timing sensor, repair the fault and then attempt to start the engine. If the engine will not start, proceed to "High Pressure Fuel System".
If the signal from the secondary speed/timing sensor is greater than 0 rpm and the engine will not start, proceed to "High Pressure Fuel System". High Pressure Fuel System
Use the electronic service tool to check the absolute fuel rail pressure while the engine is cranking at a minimum speed of 150 rpm.
If the absolute fuel rail pressure is less than 25 MPa (3625 psi), perform the following procedure:
Check that the inlet pressure at the fuel rail pump is greater than 50 kPa (7.25 psi). If the inlet pressure is