Series 60 DDEC VI Troubleshooting – Section 22 SPN 84 (CPC) – J1939 Wheel-Based Vehicle Speed Signal Erratic or Missing
Series 60 DDEC VI Troubleshooting – Section 21 SPN 70 (CPC) – J1939 Park Brake Switch Signal Erratic or Missing
Series 60 DDEC VI Troubleshooting – Section 20 SPN 51 – Intake Throttle Valve Above or Below Normal Operating Range