I have a recently purchased d6m ser. # 4JN02292, running fine but will get an active code 113 0671.02 when i start moving, can someone tell me what this code is? Or where I can find a list
MID 113 CID 0671 FMI 02 Conditions Which Generate This Code: Illustration 1 g00604636 Schematic of the Transmission Output Speed Sensor 1 This diagnostic code is recorded when the signal from the speed sensor is erratic, intermittent, or incorrect. For the transmission output speed sensors, the ECM determines that this condition exists by comparing the sensor 1 and sensor 2 signals to each other. This diagnostic code is recorded when one of the sensors shows a valid speed signal that is above the minimum and the other sensor signal is below the level for dropout.
Note: Use the following procedure for the D6R, D7R, and the D8R only. This diagnostic code will occur if the wiring for the transmission intermediate speed sensor and the wiring for the output speed sensor is exchanged. The diagnostic code becomes inactive when the transmission is in first gear or third gear. Use the 4C-8195 Control Service Tool in order to determine if the wires for the speed sensor are exchanged. Go to mode 7 for component data display. Use the "+/-" switch in order to change the component number to 671. Operate the machine in first gear. There should be a numerical value in the display which increases with vehicle speed. Shift to second gear. If the wires are exchanged, the value that is displayed will go to zero. For an additional check, compare the values for components 0671, 673, 674 and 675 when the transmission is in first gear and in second gear. When the transmission is in first gear all four codes should have the same value. When the transmission is in second gear, 0671 and 673 should have the same value. When the transmission is in second gear, the values for 674 and 675 should be zero. If the wires for the speed sensor are exchanged, the values for 671 and 675 will be zero. If the wires for the speed sensor are exchanged, 673 and 674 will have the same value. To correct this problem, remove the transmission access cover at the rear of the machine. There will be two connectors for speed sensors near the lower left side of the transmission case. The connectors are under the cross shaft of the bevel gear. The one to the left will have gray wires and orange wires. The one on the right will have blue wires and brown wires. There are two additional connectors for the speed sensor. The two additional connectors are located behind the control stack. These connectors are the connectors that are exchanged. The connector that is located to the left should have green wires and white wires. The connectors that are located to the right should have yellow wires and purple wires. Position these connectors in the proper locations. There is a tab that locks on top of the connector. The tab must be depressed in order to remove the connector from the solenoid. Use the 4C-8195 Control Service Tool to verify that the problem has been corrected. In second gear, components 671 and 673 should read the same value. Component 674 and component 675 should read zero. Note: It may be necessary to move the machine in order to detect a problem for the transmission intermediate speed sensor and the output speed sensor. The following procedures can be used for troubleshooting the transmission speed sensor. System Response: This diagnostic code causes the ECM to be unable to calculate speed ratios. Diagnostic codes will show slippage on the forward clutch and the reverse clutch of the transmission. Test Step 1. CHECK THE SENSOR AND CHECK THE HARNESS AT THE TRANSMISSION Before performing the following procedures, verify that the battery power in the ohmmeter is good and verify that the ohmmeter is set to the proper range of resistance. Turn the key start switch to the OFF position. Disconnect the machine harness from the internal harness of the transmission at the transmission case. At the transmission case, measure the resistance between the two contacts of the sensor. Table 1 Coil Resistance for TOS Sensor Speed Sensor Part # Sensor Coil Resistance 3E-8848 1100 ± 100 ohms @ 25° C (77° F) 183-5011 193-2550 318-1178 1450 ± 180 ohms @ 25° C (77° F)
Expected Result: The resistance is within the range listed in Table 1. Results: OK - The TOS sensor circuit resistance is within the listed range. The resistance is correct. The speed sensor and the internal harness of the transmission have not failed. Proceed to Test Step 3. NOT OK - The TOS sensor circuit resistance is NOT within the listed range. The speed sensor or the internal harness of the transmission has failed. Proceed to Test Step 2. Test Step 2. CHECK THE RESISTANCE OF THE SENSOR Disconnect the speed sensor from the internal harness of the transmission. Measure the resistance between the two contacts of the connector for the speed sensor. Expected Result: The resistance is within the range listed in Table 1. Results: OK - The TOS sensor resistance is within the listed range. Repair: The internal harness of the transmission has failed. Repair the internal harness for the transmission or replace the internal harness for the transmission. STOP NOT OK - The TOS sensor resistance is NOT within the listed range. Repair: The speed sensor has failed. Replace the sensor. Adjust the speed sensor properly when the sensor is installed . See Testing and Adjusting, "Speed Sensor - Adjust". STOP Test Step 3. CHECK THE SIGNAL CIRCUIT FOR AN OPEN IN THE MACHINE HARNESS The key start switch is OFF and the machine harness is disconnected from the internal harness of the transmission at the transmission case. At the machine harness connector for the transmission, place a jumper between the two contacts that correspond to the sensor. Disconnect the machine harness connector J2 from the ECM. At the J2 harness connector, measure the resistance between the positive signal contact and the negative signal contact for the suspect sensor. Expected Result: There should be less than 5.0 ohms resistance. Results: OK - There is less than 5.0 ohms resistance. The machine harness is correct. Proceed to Test Step 4. NOT OK - There is not less than 5.0 ohms resistance. Repair: There is an open circuit in the machine harness. The open is in positive signal wire or the negative signal wire of the machine harness. Repair the machine harness or replace the machine harness. STOP
Test Step 4. CHECK THE SIGNAL CIRCUIT FOR A SHORT If a jumper was used in a previous step, remove the jumper. Reconnect the machine harness to the internal harness of the transmission at the transmission case. At the J1 and J2 harness connectors, measure the resistance between the + signal contact and all sources of positive voltage and ground. The possible sources of positive voltage are contacts J1-1, J1-4, J1-6, J1-8, J1-10, J1-11, J1-12, J1-17, J1-18, J1-40, J2-1, J2-2, J2-7, J2-8, J2-13, J2-19, and J2-37. The possible sources of ground are contact J1-2, contact J1-5, contact J1-7, contact J1-15, contact J1-16, contact J2-3 and frame ground. Repeat the previous step with the negative signal contact. Expected Result: Each resistance should be greater than 5000 ohms. Results: OK - Each resistance is greater than 5000 ohms. The machine harness is correct. Proceed to Test Step 5. NOT OK - Each resistance is not greater than 5000 ohms. Repair: There is a short in the machine harness. There is a short between the signal circuit and the circuit with a low resistance measurement. Repair the machine harness or replace the machine harness. STOP Test Step 5. CHECK IF THE DIAGNOSTIC CODE IS STILL ACTIVE Clean the contacts of the harness connectors. Reconnect all harness connectors. Turn the key start switch to the ON position. Start the engine and run the engine at low idle. Operate the machine. For transmission output speed sensors and the intermediate speed sensors, this step will require the machine to be moving. Enter service mode of the Caterpillar Monitoring System. Put the diagnostic code on hold. Observe the status of the diagnostic code indicator. Expected Result: CID 0671 FMI 02 is present. Results: YES - CID 0671 FMI 02 is present. Proceed to Test Step 6. NO - CID 0671 FMI 02 is not present. Repair: The problem does not exist at this time. The initial problem was probably caused by a poor electrical connection or a short at one of the harness connectors that was disconnected and reconnected. Resume normal machine operation. STOP Test Step 6. CHECK THE ADJUSTMENT OF THE SENSOR The transmission must be removed to adjust the speed sensor. Check the speed sensor adjustment. See Testing and Adjusting, "Speed Sensor - Adjust". Clean the contacts of the harness connectors. Reconnect all harness connectors. Turn the key start switch to the ON position. Start the engine and run the engine at low idle. Operate the machine. For transmission output speed sensors and the intermediate speed sensors, this step will require the machine to be moving. Enter service mode of the Caterpillar Monitoring System. Put the diagnostic code on hold. Observe the status of the diagnostic code indicator. Expected Result:
CID 671 FMI 02 is present. Results: YES - CID 671 FMI 02 is present. Repair: Replace the speed sensor. Adjust the speed sensor. See Testing and Adjusting, "Speed Sensor - Adjust". Proceed to Test Step 7. NO - CID 671 FMI 02 is not present. Repair: The adjustment of the speed sensor corrected the failure. STOP Test Step 7. CHECK IF THE DIAGNOSTIC CODE IS STILL ACTIVE Remove connectors J1 and J2 from the ECM. Inspect the contacts and clean the contacts of the harness connectors. Turn the key start switch to the ON position. Enter service mode of the Caterpillar Monitoring System and clear all inactive diagnostic codes. Operate the machine. Determine if the diagnostic code for the speed sensor is present. Expected Result: The diagnostic code for the speed sensor is present. Results: YES - The diagnostic code for the speed sensor is present. Repair: Exit this procedure and perform the diagnostic code procedure again. If the problem persists, the ECM may have failed. Prior to replacing an ECM, always contact your dealer Technical Communicator (TC) for possible consultation with Caterpillar. This consultation may greatly reduce repair time. See theTesting and Adjusting, "Electronic Control Module (ECM) - Replace". STOP NO - The diagnostic code for the speed sensor is not present. Repair: The problem does not exist at this time. The new speed sensor corrected the problem. Resume normal machine operation. STOP PPI-000107D1 2023/07/19 15:56:02-04:00 i01373076 © 2023 Caterpillar Inc.
Thankyou! this will be a huge help
You'll need an electrical schematic as well. Keep an eye on your messages. See this thread as well. It will prove useful to you if you haven't used a 4C-8195 tool. On Posts 50-52 (Page 3) is a workaround if you don't have a Click Box but read the whole thread and educate yourself. It will be time well spent. The famous Cat "Click Box" It is a regular event on HEF for someone to post a question regarding Cat machine electronics, Diagnostic Codes, etc. For a large number of the questions posted the answer(s) revolve around the famous Cat “Click Box”, otherwise known as the 4C-8195 Control Service Tool. This tool usually hooks... HeavyEquipmentForums