SPACER-FAN 4488698 - Caterpillar

Table 1
Diagnostic trouble Codes for the Sensor Supply Circuit
J1939 Code Description Notes
3509-2 Sensor Supply Voltage 1 : Erratic, Intermittent, or Incorrect The Electronic Control Module (ECM) detects a fault in the 5 VDC sensor supply circuit supplied on the following pins:
J2:8
J2:9
J2:10
J2:11
J2:12
J2:13
The engine will be derated.
3510-2 Sensor Supply Voltage 2 : Erratic, Intermittent, or Incorrect The Electronic Control Module (ECM) detects a fault in the 5 VDC sensor supply circuit supplied on the following pins:
J1:14
J1:16
If equipped, the warning lamp will come on. The engine will be derated.
3511-2 Sensor Supply Voltage 3 : Erratic, Intermittent, or Incorrect The Electronic Control Module (ECM) detects a fault in the 5 VDC sensor supply circuit supplied on the following pin:
J1:17
If equipped, the warning lamp will come on. The following background information is related to this procedure:The ECM supplies regulated +5 VDC to the following sensors on the J2 connector (a 3509-2 diagnostic code applies to the 5 VDC supply for these sensors) :
The position sensor for the intake throttle valve
The position sensor for the NOx Reduction System (NRS) valve
The intake manifold air pressure sensor
The fuel rail pressure sensor
The exhaust gas pressure sensor
The secondary (camshaft) speed/timing sensorThe ECM supplies regulated +5 VDC to the following sensors on the J1connector (a 3510-2 diagnostic code applies to the 5 VDC supply for these sensors) :
The Diesel Particulate Filter (DPF) differential pressure sensor
Analog throttle position sensor 1The ECM supplies regulated +5 VDC to analog throttle position sensor 2 on the J1 connector. A 3511-2 diagnostic code applies to the 5 VDC supply for this sensor.
Illustration 1 g03620418
Schematic diagram of the 5 VDC supply circuit supplied by the J2 connector.
Not all connectors are shown. Refer to the appropriate Electrical Schematic.
Illustration 2 g03775432
Typical example of the 5 VDC supply circuit supplied by the J1 connector. A 3510-2 diagnostic code applies to the 5 VDC supply in this illustration.
Not all connectors are shown. Refer to the Electrical Schematic for the application.
Illustration 3 g03775446
Typical example of the 5 VDC supply circuit supplied by the J1 connector. A 3511-2 diagnostic code applies to the 5 VDC supply in this illustration.
Not all connectors are shown. Refer to the Electrical Schematic for the application.
Illustration 4 g02727977
Typical view of the pin locations on the J2 connector for the 5 VDC supply.
(8) Intake throttle valve position sensor 5 VDC supply
(9) NRS valve position sensor 5 VDC supply
(10) Intake manifold air pressure sensor 5 VDC supply
(11) Fuel rail pressure sensor 5 VDC supply
(12) Exhaust gas pressure sensor 5 VDC supply
(13) Secondary (camshaft) speed/timing sensor 5 VDC supply
(24) NRS valve position sensor ground
(25) Intake manifold air pressure sensor
(26) Fuel rail pressure sensor ground
(27) Exhaust gas pressure sensor ground
(28) Secondary (camshaft) speed/timing sensor ground
(37) Intake throttle valve position sensor ground
Illustration 5 g02728012
Typical view of the pin locations on the P1 connector for the 5 VDC supply
(14) DPF differential pressure sensor 5 VDC supply
(16) Analog throttle position sensor (1) 5 VDC supply
(17) Analog throttle position sensor (2) 5 VDC supply
(36) DPF differential pressure sensor ground
(38) Analog throttle position sensor (1) ground
(39) Analog throttle position sensor