| Service Codes For the Power Train ECM Module Identifier (MID) No. 081 (1) |
|
|---|---|
| Perform the procedure that corresponds to the CID and the FMI of the service code during troubleshooting. | |
| CID / FMI | Description |
| CID 0041 - Sensor Power Supply Voltage: | |
| FMI 03 | Voltage above normal or shorted high. |
| FMI 04 | Voltage below normal or shorted low. |
| CID 0070 - Pressure Switch (Parking Brake Oil): | |
| FMI 03 | Voltage above normal or shorted high. |
| FMI 04 | Voltage below normal or shorted low. |
| CID 0149 - Solenoid Valve (Ride Control 2): | |
| FMI 03 | Voltage above normal or shorted high. |
| FMI 05 | Current below normal or open circuit. |
| FMI 06 | Current above normal or grounded circuit. |
| CID 0168 - Electrical System Voltage: | |
| FMI 00 | Data valid but above normal operational range. |
| FMI 01 | Data valid but below normal operational range. |
| CID 0177 - Temperature Sensor (Transmission Oil): | |
| FMI 03 | Voltage above normal or shorted high. |
| FMI 04 | Voltage below normal or shorted low. |
| CID 0190 - Speed Sensor (Engine): | |
| FMI 02 | Data erratic, intermittent, or incorrect. |
| CID 0270 - Caterpillar Monitoring System Harness Code: | |
| FMI 09 | Abnormal update. |
| FMI 12 | Bad device or component. |
| CID 0363 - Solenoid Valve (Ride Control): | |
| FMI 03 | Voltage above normal or shorted high. |
| FMI 05 | Current below normal or open circuit. |
| FMI 06 | Current above normal or grounded circuit. |
| CID 0367 - Switch (Ride Control): | |
| FMI 02 | Data erratic, intermittent, or incorrect. |
| FMI 03 | Circuit shorted to +battery. |
| CID 0368 - Rotary Switch (Transmission AUTO/MAN): | |
| FMI 03 | Voltage above normal or shorted high. |
| FMI 04 | Voltage below normal or shorted low. |
| CID 0444 - Magnetic Switch (Start Relay): | |
| FMI 03 | Voltage above normal or shorted high. |
| FMI 05 | Current below normal or open circuit. |
| FMI 06 | Current above normal or grounded circuit. |
| CID 0562 - Caterpillar Monitoring System: | |
| FMI 09 | Abnormal update. |
| CID 0585 - Speed Sensor (Transmission Output 1): | |
| FMI 02 | Data erratic, intermittent, or incorrect. |
| CID 0617 - Magnetic Switch (Air Inlet Heater Relay): | |
| FMI 03 | Voltage above normal or shorted high. |
| FMI 05 | Current below normal or open circuit. |
| FMI 06 | Current above normal or grounded circuit. |
| CID 0621 - Switch (Downshift), (If Equipped) CID 0622 - Switch (Upshift), (If Equipped) CID 0623 - Switch (Direction): (If Equipped) |
|
| FMI 03 | Voltage above normal or shorted high. |
| FMI 04 | Voltage below normal or shorted low. |
| CID 0631 - Modulating Valve (Clutch 1 Solenoid), CID 0632 - Modulating Valve (Clutch 2 Solenoid), CID 0633 - Modulating Valve (Clutch 3 Solenoid), CID 0634 - Modulating Valve (Clutch 4 Solenoid), CID 0635 - Modulating Valve (Clutch 5 Solenoid), CID 0636 - Modulating Valve (Clutch 6 Solenoid): |
|
| FMI 03 | Voltage above normal or shorted high. |
| FMI 05 | Current below normal or open circuit. |
| FMI 06 | Current above normal or grounded circuit. |
| FMI 07 | Mechanical system not responding properly. |
| FMI 13 | Out of calibration. |
| CID 0668 - Transmission Control (Shift Lever): | |
| FMI 02 | Data erratic, intermittent, or incorrect. |
| CID 0672 - Speed Sensor (Torque Converter Output), CID 0673 - Speed Sensor (Transmission Output 2), CID 0674 - Speed Sensor (Transmission Intermediate 1), CID 0675 - Speed Sensor (Transmission Intermediate 2): |
|
| FMI 02 | Data erratic, intermittent, or incorrect. |
| CID 0688 - Solenoid Valve (Dual Horsepower): | |
| FMI 03 | Voltage above normal or shorted high. |
| FMI 05 | Current below normal or open circuit. |
| FMI 06 | Current above normal or grounded circuit. |
| CID 0793 - Pressure Switch (Primary Steering): | |
| FMI 03 | Voltage above normal or shorted high. |
| FMI 04 | Voltage below normal or shorted low. |
| CID 0794 - Pressure Switch (Secondary Steering): | |
| FMI 03 | Voltage above normal or shorted high. |
| FMI 04 | Voltage below normal or shorted low. |
| FMI 07 | Mechanical system not responding properly. |
| CID 0795 - Relay (Secondary Steering Intermediate): | |
| FMI 03 | Voltage above normal or shorted high. |
| FMI 05 | Circuit below normal or open circuit. |
| FMI 06 | Current above normal or grounded circuit. |
| FMI 07 | Mechanical system not responding properly. |
| CID 1327 - Position Sensor (Left Brake Pedal): | |
| FMI 03 | Voltage above normal or shorted high. |
| FMI 04 | Voltage below normal or open circuit. |
| FMI 13 | Out of calibration. |
| CID 1521- Rotary Switch (Variable Shift Control) | |
| FMI 03 | Voltage above normal or shorted high. |
| FMI 04 | Voltage below normal or open circuit. |
| ( 1 ) | For the Power Train ECM, the MID is 081. This table pertains only to faults with a MID of 081. |
Note: Table 1 refers to the service codes for the power train ECM only. When the Caterpillar Monitoring System is in service mode, the service codes for the power train ECM are shown on the display area of the Caterpillar Monitoring System. The information of the service code for the power train ECM is transferred via the CAT Data Link to the Caterpillar Monitoring System. This diagnostic information is shown when the Caterpillar Monitoring System is in the service mode. The module identifier (MID) tells the service person the ECM that is sending the service code. The MID for the power train ECM is 081. The information in table 1 refers to service codes with a MID of 081. The MID of other electronic control modules or components on a particular machine are listed on the electrical system schematic. Troubleshooting information for the service codes with a MID that is not 081 can be found in the service manual for that system.
Use the Caterpillar Monitoring System or the Caterpillar Electronic Technician (ET) in order to determine the diagnostic codes for the power train electronic control module (ECM). After determining the diagnostic codes, refer to the corresponding test procedure for more information. Perform the procedure that corresponds to the Component Identifier (CID) and the Failure Mode Identifier (FMI) of the diagnostic code. The following table is a list of possible diagnostic codes for the power train ECM.
The following Table 2 is a description of the failure mode identifier (FMI) codes.
| FMI No. | Description |
|---|---|
| 0 | Data valid but above normal operational range |
| 1 | Data valid but below normal operational range |
| 2 | Data erratic, intermittent, or incorrect |
| 3 | Voltage above normal or shorted high |
| 4 | Voltage below normal or shorted low |
| 5 | Current below normal or open circuit |
| 6 | Current above normal or grounded circuit |
| 7 | Mechanical system not responding properly |
| 8 | Abnormal frequency, pulse width, or period |
| 9 | Abnormal update |
| 10 | Abnormal rate of change |
| 11 | Failure mode not identifiable |
| 12 | Bad device or component |
| 13 | Out of calibration |
FMI 00 - Data valid but above normal operational range
Every electronic control system sets a high limit for the expected operating range of a signal. The limit includes ranges such as high converter temperatures. A sensor that is still functioning but sending a signal above the expected limit will cause the FMI 00 code to be stored.
Example - A pulse width modulated sensor is not expected to generate a valid signal over 80 percent of the duty cycle. A sensor could generate a signal that is above 80 percent. The sensor is still functioning but the signal is now above the expected signal limit.
FMI 01 - Data valid but below normal operational range
Every electronic control system sets a low limit for the expected operating range of a signal. The limit includes ranges such as low engine oil pressure. A sensor that is still functioning but sending a signal below the expected limit will cause a FMI 01 to be stored.
Example - Most pulse width modulated sensors are not expected to generate a valid signal that is less than 5 percent of the duty cycle. A sensor could generate a signal that is below 5 percent. The sensor is still functioning but the signal is now above the expected signal limit.
FMI 02 - Data erratic, intermittent, or incorrect.
FMI 02 occurs when signal data from a component is present. Then, one of the following events happens to the data.
- The data disappears.
- The data becomes unstable.
- The data becomes invalid.
Data can be correct at times and data can be incorrect at other times. This code also relates to communication between electronic controls. For example, the VIMS looks for the engine speed from the engine electronic control over the CAT data link.
FMI 03 - Voltage above normal or shorted high
FMI 03 occurs when the voltage reading from the component or the voltage reading from the system is high. FMI 03 is often related to a signal circuit.
The following elements of a system can cause a FMI 03 code.
- The sensor
- The harness
- A related electronic control
The following descriptions are possible causes of an FMI 03 code.
- A sensor generates an alternating signal (duty cycle) and the output stops at maximum signal output.
- The sensor signal wire of the harness is shorted to the sensor power supply or the sensor signal wire of the harness is shorted to a greater voltage than the power supply.
- A signal wire is open between the sensor and the electronic control. Electronic controls normally pull the input circuit to a positive voltage level. For example, the input circuit reads 5 DCV when the sensor is disconnected.
- The electronic control has an internal short to a positive source on the connector contact of the sensor signal. Also, a failed electronic control believes that a diagnostic code exists when the signal circuit is functioning correctly.
FMI 04 - Voltage below normal or shorted low
The FMI 04 is similar to the FMI 03. However, the FMI 04 shows voltage readings that are lower than normal readings. FMI 04 is most often related to a signal circuit. The FMI 04 is similar to the FMI 06. Sometimes, the FMI 04 is used instead of the FMI 06.
The following elements of a system can cause a FMI 04 code.
- The sensor
- The harness
- A related electronic control
The following descriptions are possible causes of an FMI 04 code.
- The sensor signal stops low or the sensor signal stops near a ground.
- The signal wire of the harness is shorted to ground.
- The electronic control has an internal short to ground on the connector contact of the signal input.
FMI 05 - Current below normal or open circuit
The FMI 05 occurs when the electronic control detects a current reading that is low.
The most likely cause of an FMI 05 code is open circuits or poor harness connections.
FMI 06 - Current above normal or grounded circuit
FMI 06 is similar to FMI 05. Except, the current of the FMI 06 is higher than normal. FMI 06 is most often related to an output circuit of an electronic control.
Example - FMI 06 occurs when a circuit is shorted to ground.
FMI 06 is very similar to FMI 04. Sometimes, FMI 06 is used instead of FMI 04.
FMI 07 - Mechanical system not responding properly
FMI 07 occurs when an electronic control sends an electrical command to a mechanical system and the expected result is not within the range.
Example - FMI 07 occurs when the transmission is shifting slowly as a result of a sluggish modulating valve (transmission clutch).
FMI 08 - Abnormal frequency, pulse width, or period
FMI 08 occurs when a frequency of the signal or the pulse width of the signal is not within the range that is expected.
Note: The period is the time in seconds for one cycle at a specific frequency. The period is defined as 1/frequency in Hz.
FMI 09 - Abnormal update
FMI 09 pertains to the communication between the electronic controls on the data link. FMI 09 occurs when an electronic control is not able to receive information from another electronic control and when the electronic control expects to receive the information.
FMI 10 - Abnormal rate of change
FMI 10 occurs when a signal changes faster than the expected rate. FMI 10 code occurs when the signal changes slower than the expected rate.
Example - When the signal from the transmission output speed sensor on a machine indicates that the machine is accelerating faster than can possibly occur during an actual operation.
FMI 11 - Failure mode not identifiable
FMI 11 occurs when the electronic control identifies more than one FMI as being responsible for a single problem.
FMI 12 - Bad device or component
FMI 12 describes the following condition: An electronic control sends a signal to another electronic module over a data link. The electronic control expects a response but the electronic control receives no response or an incorrect response.
FMI 12 also describes the following condition: An electronic module is expected to send data periodically but the electronic control does not send the data.
FMI 12 could also relate to a failed data link.
FMI 13 - Out of calibration
FMI 13 For a given mechanical condition, the electrical signal is not within the expected limits of the electronic control.
Reference: For more information on the Caterpillar Monitoring System, refer to the Service Manual module Systems Operation, "Monitoring System (Power Train Functions)" for the machine that is being serviced.