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 instructions
• Some inspections are performed with the connectors removed. Others are performed with the connectors fitted.


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