\nPerkins SPI2 2018A EPC+Service Manual Free Download<\/a>
\nPerkins Communication Adapter 3<\/a><\/p>\n
Overview of the J1939 Data Link<\/h3>\n\n- The J1939 data link enables high-speed communication between devices.<\/li>\n
- Proper communication requires 60 ohms resistance between the CAN_H and CAN_L lines, achieved by two 120-ohm terminating resistors at each end of the network.<\/li>\n
- The J1939 cabling is a shielded twisted pair, and any damage must be replaced with the same type of cable.<\/li>\n<\/ul>\n
![\"\"](\"https:\/\/www.obd2tool.com\/blog\/wp-content\/uploads\/2024\/11\/Resolving-Perkins-1106D-Diagnostic-Code-0247-9-2.jpg\")
<\/h3>\nStep-by-Step Diagnostic Procedure<\/h3>\nTest Step 1: Inspect Electrical Connections and Wiring<\/h4>\n\n- Turn off the ignition switch.<\/li>\n
- Inspect all connectors on the CAN data link circuit (e.g., P1\/J1 connectors).<\/li>\n
- Perform a 45 N (10 lb) pull test on all cables connected to the data link.<\/li>\n
- Check the wiring harness from the ignition switch to the ECM for signs of:\n
\n- Corrosion<\/li>\n
- Wear or damage<\/li>\n
- Pinching or other physical defects<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n
Expected Result:<\/strong>
\nAll connections are fully seated, and the wiring is intact.<\/p>\nOutcome:<\/strong><\/p>\n\n- OK: Proceed to Test Step 2.<\/li>\n
- Not OK: Repair or replace the connector\/wiring as needed. Clear diagnostic codes and verify resolution. STOP.<\/li>\n<\/ul>\n
Test Step 2: Check the Terminating Resistor<\/h4>\n\n- Disconnect the P1 connector from the ECM.<\/li>\n
- Use a multimeter to measure resistance between P1:20 (CAN_H) and P1:21 (CAN_L).<\/li>\n<\/ol>\n
Expected Result:<\/strong>
\nResistance should be 50\u201370 ohms.<\/p>\nOutcome and Actions:<\/strong><\/p>\n\n- 50\u201370 ohms (Result 1): The terminating resistance is correct. Proceed to Test Step 3.<\/li>\n
- Less than 50 ohms (Result 2): Short circuit in the wiring harness. Repair or replace as needed, clear codes, and verify. STOP.<\/li>\n
- 110\u2013130 ohms (Result 3): One terminating resistor may be faulty.\n
\n- Locate and test both terminating resistors.<\/li>\n
- Replace any resistor outside the 50\u201370 ohm range.<\/li>\n
- If both resistors are good, proceed to Test Step 4.<\/li>\n<\/ul>\n<\/li>\n
- Greater than 150 ohms (Result 4): Open circuit in the wiring harness. Proceed to Test Step 3.<\/li>\n<\/ul>\n
Test Step 3: Verify Data Link Cabling<\/h4>\n\n- Disconnect any additional devices connected to the J1939 data link.<\/li>\n
- Measure resistance between the following pairs of pins:\n
\n- P1:20 (CAN_H) and other CAN+ pins.<\/li>\n
- P1:21 (CAN_L) and other CAN- pins.<\/li>\n
- P1:22 (CAN Shield) and shield pins of other devices.<\/li>\n<\/ul>\n<\/li>\n
- Use a multimeter for these measurements.<\/li>\n<\/ol>\n
Expected Result:<\/strong>
\nResistance between all cables should be less than 2.0 ohms.<\/p>\nOutcome and Actions:<\/strong><\/p>\n\n- OK: All resistances are within limits. Proceed to Test Step 4.<\/li>\n
- Not OK: Repair or replace any faulty wiring or connectors, clear codes, and verify resolution. STOP.<\/li>\n<\/ul>\n
Test Step 4: Check Other Devices on the J1939 Network<\/h4>\n\n- Use an appropriate diagnostic tool to test all other devices on the J1939 data link.<\/li>\n<\/ol>\n
Expected Result:<\/strong>
\nAll devices on the data link function correctly.<\/p>\nOutcome and Actions:<\/strong><\/p>\n\n- OK: Repeat the entire test sequence from Test Step 1 to confirm resolution. STOP.<\/li>\n
- Not OK: Diagnose and repair faulty devices. Clear codes and verify resolution. STOP.<\/li>\n<\/ul>\n
<\/h3>\nStep-by-Step Diagnostic Procedure<\/h3>\nTest Step 1: Inspect Electrical Connections and Wiring<\/h4>\n\n- Turn off the ignition switch.<\/li>\n
- Inspect all connectors on the CAN data link circuit (e.g., P1\/J1 connectors).<\/li>\n
- Perform a 45 N (10 lb) pull test on all cables connected to the data link.<\/li>\n
- Check the wiring harness from the ignition switch to the ECM for signs of:\n
\n- Corrosion<\/li>\n
- Wear or damage<\/li>\n
- Pinching or other physical defects<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n
Expected Result:<\/strong>
\nAll connections are fully seated, and the wiring is intact.<\/p>\nOutcome:<\/strong><\/p>\n\n- OK: Proceed to Test Step 2.<\/li>\n
- Not OK: Repair or replace the connector\/wiring as needed. Clear diagnostic codes and verify resolution. STOP.<\/li>\n<\/ul>\n
Test Step 2: Check the Terminating Resistor<\/h4>\n\n- Disconnect the P1 connector from the ECM.<\/li>\n
- Use a multimeter to measure resistance between P1:20 (CAN_H) and P1:21 (CAN_L).<\/li>\n<\/ol>\n
Expected Result:<\/strong>
\nResistance should be 50\u201370 ohms.<\/p>\nOutcome and Actions:<\/strong><\/p>\n\n- 50\u201370 ohms (Result 1): The terminating resistance is correct. Proceed to Test Step 3.<\/li>\n
- Less than 50 ohms (Result 2): Short circuit in the wiring harness. Repair or replace as needed, clear codes, and verify. STOP.<\/li>\n
- 110\u2013130 ohms (Result 3): One terminating resistor may be faulty.\n
\n- Locate and test both terminating resistors.<\/li>\n
- Replace any resistor outside the 50\u201370 ohm range.<\/li>\n
- If both resistors are good, proceed to Test Step 4.<\/li>\n<\/ul>\n<\/li>\n
- Greater than 150 ohms (Result 4): Open circuit in the wiring harness. Proceed to Test Step 3.<\/li>\n<\/ul>\n
Test Step 3: Verify Data Link Cabling<\/h4>\n\n- Disconnect any additional devices connected to the J1939 data link.<\/li>\n
- Measure resistance between the following pairs of pins:\n
\n- P1:20 (CAN_H) and other CAN+ pins.<\/li>\n
- P1:21 (CAN_L) and other CAN- pins.<\/li>\n
- P1:22 (CAN Shield) and shield pins of other devices.<\/li>\n<\/ul>\n<\/li>\n
- Use a multimeter for these measurements.<\/li>\n<\/ol>\n
Expected Result:<\/strong>
\nResistance between all cables should be less than 2.0 ohms.<\/p>\nOutcome and Actions:<\/strong><\/p>\n\n- OK: All resistances are within limits. Proceed to Test Step 4.<\/li>\n
- Not OK: Repair or replace any faulty wiring or connectors, clear codes, and verify resolution. STOP.<\/li>\n<\/ul>\n
Test Step 4: Check Other Devices on the J1939 Network<\/h4>\n\n- Use an appropriate diagnostic tool to test all other devices on the J1939 data link.<\/li>\n<\/ol>\n
Expected Result:<\/strong>
\nAll devices on the data link function correctly.<\/p>\nOutcome and Actions:<\/strong><\/p>\n\n- OK: Repeat the entire test sequence from Test Step 1 to confirm resolution. STOP.<\/li>\n
- Not OK: Diagnose and repair faulty devices. Clear codes and verify resolution. STOP.<\/li>\n<\/ul>\n
Test Step 1: Inspect Electrical Connections and Wiring<\/h4>\n\n- Turn off the ignition switch.<\/li>\n
- Inspect all connectors on the CAN data link circuit (e.g., P1\/J1 connectors).<\/li>\n
- Perform a 45 N (10 lb) pull test on all cables connected to the data link.<\/li>\n
- Check the wiring harness from the ignition switch to the ECM for signs of:\n
\n- Corrosion<\/li>\n
- Wear or damage<\/li>\n
- Pinching or other physical defects<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n
Expected Result:<\/strong>
\nAll connections are fully seated, and the wiring is intact.<\/p>\nOutcome:<\/strong><\/p>\n\n- OK: Proceed to Test Step 2.<\/li>\n
- Not OK: Repair or replace the connector\/wiring as needed. Clear diagnostic codes and verify resolution. STOP.<\/li>\n<\/ul>\n
Test Step 2: Check the Terminating Resistor<\/h4>\n\n- Disconnect the P1 connector from the ECM.<\/li>\n
- Use a multimeter to measure resistance between P1:20 (CAN_H) and P1:21 (CAN_L).<\/li>\n<\/ol>\n
Expected Result:<\/strong>
\nResistance should be 50\u201370 ohms.<\/p>\nOutcome and Actions:<\/strong><\/p>\n\n- 50\u201370 ohms (Result 1): The terminating resistance is correct. Proceed to Test Step 3.<\/li>\n
- Less than 50 ohms (Result 2): Short circuit in the wiring harness. Repair or replace as needed, clear codes, and verify. STOP.<\/li>\n
- 110\u2013130 ohms (Result 3): One terminating resistor may be faulty.\n
\n- Locate and test both terminating resistors.<\/li>\n
- Replace any resistor outside the 50\u201370 ohm range.<\/li>\n
- If both resistors are good, proceed to Test Step 4.<\/li>\n<\/ul>\n<\/li>\n
- Greater than 150 ohms (Result 4): Open circuit in the wiring harness. Proceed to Test Step 3.<\/li>\n<\/ul>\n
Test Step 3: Verify Data Link Cabling<\/h4>\n\n- Disconnect any additional devices connected to the J1939 data link.<\/li>\n
- Measure resistance between the following pairs of pins:\n
\n- P1:20 (CAN_H) and other CAN+ pins.<\/li>\n
- P1:21 (CAN_L) and other CAN- pins.<\/li>\n
- P1:22 (CAN Shield) and shield pins of other devices.<\/li>\n<\/ul>\n<\/li>\n
- Use a multimeter for these measurements.<\/li>\n<\/ol>\n
Expected Result:<\/strong>
\nResistance between all cables should be less than 2.0 ohms.<\/p>\nOutcome and Actions:<\/strong><\/p>\n\n- OK: All resistances are within limits. Proceed to Test Step 4.<\/li>\n
- Not OK: Repair or replace any faulty wiring or connectors, clear codes, and verify resolution. STOP.<\/li>\n<\/ul>\n
Test Step 4: Check Other Devices on the J1939 Network<\/h4>\n\n- Use an appropriate diagnostic tool to test all other devices on the J1939 data link.<\/li>\n<\/ol>\n
Expected Result:<\/strong>
\nAll devices on the data link function correctly.<\/p>\nOutcome and Actions:<\/strong><\/p>\n\n- OK: Repeat the entire test sequence from Test Step 1 to confirm resolution. STOP.<\/li>\n
- Not OK: Diagnose and repair faulty devices. Clear codes and verify resolution. STOP.<\/li>\n<\/ul>\n
- \n
- Corrosion<\/li>\n
- Wear or damage<\/li>\n
- Pinching or other physical defects<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n
Expected Result:<\/strong>
\nAll connections are fully seated, and the wiring is intact.<\/p>\nOutcome:<\/strong><\/p>\n
- \n
- OK: Proceed to Test Step 2.<\/li>\n
- Not OK: Repair or replace the connector\/wiring as needed. Clear diagnostic codes and verify resolution. STOP.<\/li>\n<\/ul>\n
Test Step 2: Check the Terminating Resistor<\/h4>\n
- \n
- Disconnect the P1 connector from the ECM.<\/li>\n
- Use a multimeter to measure resistance between P1:20 (CAN_H) and P1:21 (CAN_L).<\/li>\n<\/ol>\n
Expected Result:<\/strong>
\nResistance should be 50\u201370 ohms.<\/p>\nOutcome and Actions:<\/strong><\/p>\n
- \n
- 50\u201370 ohms (Result 1): The terminating resistance is correct. Proceed to Test Step 3.<\/li>\n
- Less than 50 ohms (Result 2): Short circuit in the wiring harness. Repair or replace as needed, clear codes, and verify. STOP.<\/li>\n
- 110\u2013130 ohms (Result 3): One terminating resistor may be faulty.\n
- \n
- Locate and test both terminating resistors.<\/li>\n
- Replace any resistor outside the 50\u201370 ohm range.<\/li>\n
- If both resistors are good, proceed to Test Step 4.<\/li>\n<\/ul>\n<\/li>\n
- Greater than 150 ohms (Result 4): Open circuit in the wiring harness. Proceed to Test Step 3.<\/li>\n<\/ul>\n
Test Step 3: Verify Data Link Cabling<\/h4>\n
- \n
- Disconnect any additional devices connected to the J1939 data link.<\/li>\n
- Measure resistance between the following pairs of pins:\n
- \n
- P1:20 (CAN_H) and other CAN+ pins.<\/li>\n
- P1:21 (CAN_L) and other CAN- pins.<\/li>\n
- P1:22 (CAN Shield) and shield pins of other devices.<\/li>\n<\/ul>\n<\/li>\n
- Use a multimeter for these measurements.<\/li>\n<\/ol>\n
Expected Result:<\/strong>
\nResistance between all cables should be less than 2.0 ohms.<\/p>\nOutcome and Actions:<\/strong><\/p>\n
- \n
- OK: All resistances are within limits. Proceed to Test Step 4.<\/li>\n
- Not OK: Repair or replace any faulty wiring or connectors, clear codes, and verify resolution. STOP.<\/li>\n<\/ul>\n
Test Step 4: Check Other Devices on the J1939 Network<\/h4>\n
- \n
- Use an appropriate diagnostic tool to test all other devices on the J1939 data link.<\/li>\n<\/ol>\n
Expected Result:<\/strong>
\nAll devices on the data link function correctly.<\/p>\nOutcome and Actions:<\/strong><\/p>\n
- \n
- OK: Repeat the entire test sequence from Test Step 1 to confirm resolution. STOP.<\/li>\n
- Not OK: Diagnose and repair faulty devices. Clear codes and verify resolution. STOP.<\/li>\n<\/ul>\n
- Use an appropriate diagnostic tool to test all other devices on the J1939 data link.<\/li>\n<\/ol>\n