FUSO 4M4 – HYBRID ELECTRIC VEHICLE SYSTEM – TROUBLESHOOTING – 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 , 02 , and so on) correspond to the similarly printed reference numbers in section “3. Inspections Based on Diagnosis Codes”.

7.1 Electronic control unit connector terminal layout

7.2 Inspection instructions
• Inspections are performed with the connector removed because of the water and dust-proof connector.
• Battery electronic control unit is checked at the connector of high voltage battery box.

 

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