D Group 28 Troubleshooting Troubleshooting Engine ECU, Fault Tracing The “Premium Tech Tool” (PTT) is the preferred tool for performing diagnostic work. Contact your local dealer for more information. The control units on the information link communicate according to the SAE J1587 standard. The standard has been extended with Volvo’s own supplement (PPID, PSID). The fault codes set by the control units contain information that is described by the following abbreviations. MID Message Identification Description: Identification of a control unit. SID Subsystem Identification Description: Identification of a component. PID Parameter Identification Description:
Identification of a parameter (value). PSID Proprietary Subsystem Identification Description Volvo: Unique identification of a component. PPID Proprietary Parameter Identification Description Volvo: Unique identification of a parameter (value). FMI Failure Mode Identifier: Identification of fault types. FMI Table Note: When performing diagnostic test on intermittent faults, gently wiggle the wires and connectors to help find the intermittent faults.
13 FMI Display Text SAE Text 0 Value to high Data valid, but above the normal working range 1 Value too low Data valid, but below the normal working range 2 Incorrect data Intermittent or incorrect data 3 Electrical fault Abnormally high voltage or short circuit to higher voltage 4 Electrical fault Abnormally low voltage or short circuit to lower voltage 5 Electrical fault Abnormally low current or open circuit 6 Electrical fault Abnormally high current or short circuit to ground 7 Mechanical fault Incorrect response from a mechanical system 8 Mechanical or electrical fault Abnormal frequency 9 Communication fault Abnormal update rate 10 Mechanical or electrical fault Abnormally strong vibrations 11 Unknown fault Non-identifiable fault 12 Component fault Faulty unit or component 13 Incorrect calibration Calibration values outside limits 14 Unknown fault Special instructions 15 Unknown fault Reserved for future use