SHOE ASSEM. 1G2219 - Caterpillar

Use this procedure to troubleshoot the electrical system if a problem is suspected with the passive sensors. Also, use this procedure if any one of the diagnostic codes in Table 1 is active or easily repeated.
Table 1
Diagnostic Trouble Codes    
Code and Description    Conditions that Generate the Code    System Response    
52-3
Engine Intercooler Temperature : Voltage Above Normal     The ECM detects signal voltage that is greater than 4.95 VDC for 8 seconds.     The code is logged.
The value of the parameter is set to a default value.    
52-4
Engine Intercooler Temperature : Voltage Below Normal     The ECM detects signal voltage that is less than 0.2 VDC for 8 seconds.    
110-3
Engine Coolant Temperature : Voltage Above Normal     The ECM detects signal voltage that is greater than 4.95 VDC for 8 seconds.     The code is logged.
The value of the parameter is set to a default value.    
110-4
Engine Coolant Temperature : Voltage Below Normal     The ECM detects signal voltage that is less than 0.2 VDC for 8 seconds.    
172-3
Intake Manifold Air Temperature Sensor : Voltage Above Normal     The ECM detects signal voltage that is greater than 4.95 VDC for 8 seconds.     The code is logged.
The value of the parameter is set to a default value.    
172-4
Intake Manifold Air Temperature Sensor : Voltage Below Normal     The ECM detects signal voltage that is less than 0.2 VDC for 8 seconds.    
3563-3
Engine Intake Manifold 1 Temperature : Voltage Above Normal     The ECM detects signal voltage that is greater than 4.95 VDC for 8 seconds.     The code is logged.
Ambient temperature must be greater than -35 °C (-31 °F) to log this diagnostic code.
The value of the parameter is set to a default value.    
3563-4
Engine Intake Manifold 1 Temperature : Voltage Below Normal     The ECM detects signal voltage that is less than 0.2 VDC for 8 seconds.     The code is logged.
Ambient temperature must be less than
140 °C (284 °F) to log this diagnostic code.
The value of the parameter is set to a default value.    System OperationUse this procedure to troubleshoot any suspect problems with the following sensors for the primary ECM:
Coolant temperature sensor
Intake manifold air temperature sensor
Aftercooler temperature sensor
Illustration 1 g03366373
Typical schematic
Illustration 2 g03241162
Terminal locations at the P1 ECM connector (prim.) for the passive sensors (P1-16) Aftercooler temp front (P1-17) Aftercooler temp rear
Illustration 3 g03246317
Terminal locations at the P2 ECM connector (prim. & sec.) for the passive sensors (P2-30) Return (P2-63) Return (P2-84) Coolant temperature (P2-93) Return (P2-95) Intake manifold air temperature
Illustration 4 g01155187
Terminal locations at the connector for the passive analog sensors (Terminal 1) Sensor signal (Terminal 2) Sensor return
Table 2
Troubleshooting Test Steps    Values    Results    
1. Check for "Active" or "Logged" Diagnostic Codes
A. Connect Caterpillar Electronic Technician (ET) to the service tool connector.
B. Restore the electrical power to the ECM.
C. Monitor the diagnostic codes on Cat ET. Check and record any diagnostic codes.
Note: Wait at least 30 seconds in order for the diagnostic codes to