Volvo All Engines (2004 Emissions) Fault Code: PPID 35 FMI 9 EGR Mass Flow Sensor

Fault Condition: PPID 35 will set with FMI 9 if the EGR ECU signal is missing on the J1939 serial data lines.

Possible repairs:

Turn the ignition key OFF first.

1) Remove connector A from the EGR ECU. Turn the ignition switch ON. Check for battery voltage (+12V) between pin 2 of EGR ECU connector A and a known good ground. If battery voltage is NOT present, a problem exists between EGR ECU connector A pin 2 and the power supply from the EMS Relay. Inspect the EGR ECU and EMS Relay connectors for damaged or loose pins. If the connectors are in good condition, locate and repair the open circuit, and retest the system.
2) Measure the resistance between EGR ECU connector A pin 1 and a known good ground. If the measured resistance does not indicate acceptable continuity to ground, a problem exists between EGR ECU connector A and
ground. Locate and repair the problem and retest the system.
3) Disconnect harness connector B from the Engine Management System (EMS) Module. Disconnect harness connector A from the EGR ECU. Measure the resistance between Engine Management System (EMS) Module connector B pin 52 and EGR ECU connector A pin 3. If the measured resistance does NOT indicate continuity, locate and repair the open circuit in the J1939 circuit between the Engine Management System (EMS) Module and the EGR ECU.
4) Disconnect harness connector B from the Engine Management System (EMS) Module. Disconnect harness connector A from the EGR ECU. Measure the resistance between Engine Management System (EMS) Module
connector B pin 56 and EGR ECU connector A pin 6. If the measured resistance does NOT indicate continuity, locate and repair the open circuit in the J1939 circuit between the (EMS) Module and the EGR ECU.
5) Replace the EGR ECU and Mass Flow Sensor Assembly with a known good unit. Check the system for diagnostic codes. If code PPID 35 is still set, reinstall the original EGR ECU and replace the EMS Module. Retest the system.
If code PPID 35 is NOT set, replacing the EGR ECU and Mass Flow Sensor Assembly has corrected the problem.