BODY AS-PISTON 6I2650 - Caterpillar

Use this procedure to troubleshoot the electrical system if a problem is suspected with a sensor supply. Also, use this procedure if any one of the diagnostic codes in Table 1 is active or easily repeated.
Table 1
CDL Code and Description Conditions which Generate the Code System Response
41-3 8 Volt DC Supply : Voltage Above Normal The digital sensor supply voltage is above normal for 2 seconds. The code is logged.
All sensors are set to default values.
41-4 8 Volt DC Supply : Voltage Below Normal The digital sensor supply voltage is below normal for 2 seconds.
100-10 Engine Oil Pressure Sensor : Abnormal Rate of Change The signal voltage from the filtered oil pressure changes less than the specification during a specific duration of time. The code is logged.
Events for the low oil pressure and filter restriction are disabled.
The value for the filtered oil pressure is set to the value for the unfiltered oil pressure. If diagnostics are active for the unfiltered oil pressure, the default value is used.
262-3 5 Volt Sensor DC Power Supply : Voltage Above Normal The analog sensor supply voltage is above normal for 2 seconds. The code is logged.
All sensors are set to default values.
262-4 5 Volt Sensor DC Power Supply : Voltage Below Normal The analog sensor supply voltage is below normal for 2 seconds.
542-10 Engine Oil Pressure Sensor - Before Oil Filter : Abnormal Rate of Change The value for the unfiltered oil pressure that is between 530 kPa (77 psi) and 662 kPa (96 psi). The pressure changes less than 2.2 kPa (0.3 psi) in 30 seconds. The value of the parameter will be set to 600 kPa (87 psi).
1785-10 Intake Manifold Pressure Sensor : Abnormal Rate of Change The value for the unfiltered oil pressure that is between 410 kPa (59 psi) and 520 kPa (75 psi). The pressure changes less than 1.68 kPa (0.2 psi) in 30 seconds.
The engine speed must be greater than 1000 rpm in order for this code to be set. The code is logged.
The value of the parameter will be set to 320 kPa (46 psi).
2131-3 5 Volt Sensor DC Power Supply #2 : Voltage Above Normal The analog sensor supply voltage is above normal for 2 seconds. The code is logged.
All sensors are set to default values.
2131-4 5 Volt Sensor DC Power Supply #2 : Voltage Below Normal The analog sensor supply voltage is below normal for 2 seconds. System Operation (Primary ECM)The primary Electronic Control Module (ECM) supplies a regulated voltage of 5.0 0.2 VDC to the following sensors:
Atmospheric pressure sensor
Crankcase pressure sensor
Intake manifold pressure sensor
Coolant pressure sensor for the inlet of the engine block
Coolant pressure sensor for the outlet of the engine block
Filtered oil pressure sensor
Unfiltered oil pressure sensor
Differential pressure sensor for the primary fuel filters
Pressure sensor for the primary fuel filters (filtered)
Fuel transfer pressure sensor (filtered)
Fuel transfer pressure sensor (unfiltered)
Fuel rail pressure sensor
Pressure sensor for the water pump outlet for the SCAC
Turbocharger compressor