CAM-FREEWHEEL 1T1235 - Caterpillar

PB-10: Inspecting Electrical Connectors
System Operation
When to Use This ProcedureUse the following steps to help determine if the connector is the cause of the problem. If a problem is found in the electrical connector, repair the connector and verify that the problem has been fixed. BackgroundMany of the Operational Procedures and Diagnostic Code Procedures in this troubleshooting guide will direct you to check a specific electrical connector. The 3100 HEUI Truck Engines use a variety of Deutsch and Packard connectors.Intermittent electrical problems are often caused by poor connections. Always check for an Active Diagnostic Code before breaking any connections and check again immediately after reconnecting the connector to see if the problem disappears. Simply disconnecting and then reconnecting connectors can sometimes solve the problem. If this occurs, likely causes are loose pins, improperly crimped pins or corrosion. Follow this procedure to thoroughly inspect the connectors to determine if connectors are the cause of the problem.3100 HEUI Connectors Functional Test
PB-11: ECM Battery Circuits Test
System Operation
Schematic - 3126 Schematic - 3116 ECM Pin Locations
Diagnostic Codes
Functional Test
PB-12: Throttle Position Sensor Circuit Test
System Operation
Schematic: +8V Pedal Mounted Throttle Position Sensor Schematic: +12V Pedal Mounted Throttle Position Sensor for PTO ECM Pin Locations
Diagnostic Codes
Functional Test
PB-13: Check Engine/Service Engine Soon, or Fast Idle Enabled Lamp Test
System Operation
Schematic: 3116 Schematic: 3126 ECM Pin Locations Functional Test
PB-14: Vehicle Speed Circuit Test
System Operation
Schematic 1- Single Coil Speed Sensor with ECM Driving Speedometer (Recommended) Schematic 2- Single Coil Sensor for ECM, Second Single Coil Sensor for Speedometer Schematic 3- Dual Coil Vehicle Speed Sensor Schematic 4- Electronic Control Providing Vehicle Speed to Engine ECM Schematic 5- GM Vehicle Speed Connection Diagram ECM Pin Locations Diagnostic Codes
Functional Test
Vehicle Speed Calibration And Adjustment
PB-15: Cruise Control, Fast Idle Enable and Kickout Switches Circuit Test
System Operation
Electronic Service Tool Cruise Control "Kickout" Status Screen Table Electronic Service Tool Idle/PTO "Kickout" Status Screen Table Electronic Service Tool Fast Idle "Kickout" Status Screen Table Schematic - 3116 Schematic - 3126 ECM Pin Locations Diagnostic Codes
Functional Test
PB-16: Multi-Function Input Switch Circuit Test
System Operation
Electronic Service Tool Idle/PTO Kickout Status Screen Table Schematic 1- PTO Configuration Cab Switches Schematic 2- PTO Configuration Remote Switches Schematic 3- PTO Configuration Remote Throttle Schematic 4- PTO Configuration Cab Switches with Torque Limiting and Disabling Brake/Clutch Kickout of PTO Set Speed Schematic 5- PTO Configuration Remote Switches with Torque Limiting and Disabling Brake/Clutch Kickout of PTO Set Speed ECM Pin Locations Functional Test
PB-17: Service Brake #2 Switch Circuit Test
System Operation
Schematic - 3126 Schematic - 3116 ECM Pin Locations Diagnostic Codes
Functional Test
PB-18: Exhaust Brake And Transmission Interface Circuits Test
System Operation
Schematic ECM Pin Locations Functional Test
PB-19: Idle Shutdown Timer Test
System Operation
When to Use This ProcedureUse this procedure to determine if the Idle Shutdown feature is operating correctly. BackgroundThe Idle Shutdown Timer is intended to improve fuel economy by limiting idling time.The Customer Parameter Idle Shutdown may be programmed for any period from 3 to 60 minutes. The timer is activated when the vehicle speed is zero, the engine is not in Cold Mode or dedicated