Category Archives: FUSO 4M4

FUSO 4M4 – INTAKE AND EXHAUST – DIESEL PARTICULATE FILTER REGENERATION SYSTEM – Inspection of Electrical Equipment

#038 Inspection of parking brake switch • Measure continuity between terminals 1 and 2 (body) ground. • If any fault is found, replace the switch. (See Gr36.) #089 Inspection of diesel particulate filter cleaning switch • If there is any abnormality, replace the switch. #334 Inspection of diesel particulate filter pressure sensor <Diesel particulate filter… Read More »

FUSO 4M4 – INTAKE AND EXHAUST – DIESEL PARTICULATE FILTER REGENERATION SYSTEM – Inspections Performed at Electronic Control Unit Connectors

• These inspections aid troubleshooting by enabling you to check whether electronic control unit signals are being correctly transmitted via the vehicle harness and connectors. The white-on-black numbers ( 01 ) correspond to the similarly printed reference number in section “3. Inspections Based on Diagnosis Codes”. 6.1 Electronic control unit connector terminal layout 6.2 Inspection… Read More »

FUSO 4M4 – INTAKE AND EXHAUST – DIESEL PARTICULATE FILTER REGENERATION SYSTEM – Inspections Based on Diagnosis Codes

3.1 Diagnosis code list • Diagnosis codes shown by the Multi-Use Tester and those indicated by flashing of the warning lamp are different. • The Multi-Use Tester is capable of showing more detailed diagnosis codes. • The control during fault recovers by servicing the faults. However, for some diagnosis codes, the warning lamp stays illuminated… Read More »

FUSO 4M4 – INTAKE AND EXHAUST – DIESEL PARTICULATE FILTER REGENERATION SYSTEM – Diagnostic Precautions

• Before measuring voltage, check the battery for charged condition and specific gravity. If system inspection is performed with the battery uncharged or reduced in specific gravity, accurate measurements cannot be achieved. • Before disconnecting battery cables, harnesses and connectors, set the starter switch to LOCK or OFF, then allow at least 20 seconds. •… Read More »