Home » FUSO 4M4 » FUSO 4M4 – INTAKE AND EXHAUST – TURBOCHARGER CONTROL SYSTEM – Inspection of Electrical Equipment

FUSO 4M4 – INTAKE AND EXHAUST – TURBOCHARGER CONTROL SYSTEM – Inspection of Electrical Equipment

#201 Inspection of relay (normally open, 5 pins)
• Perform a continuity check and an operation check. If there is any abnormality, replace the relay.

#318 Inspection of boost pressure sensor
• Apply 5 volts DC to terminals 3 and 1.
• Apply air pressure. Gradually increase it and, while doing so, measure the output voltage occurring at terminals 2 and 1.

• If any measurement is out of specification, replace the sensor.

#514 Inspection of turbocharger actuator
• Perform the following checks. If there is any abnormality, replace the turbocharger actuator.
(1) Coil resistance of motor
• Measure the resistance between terminals 8 and 7, the resistance between terminals 8 and 6, and the resistance between terminals 7 and 6.

(2) Position sensor
• The sensor cannot easily be inspected in isolation, so you must evaluate it indirectly by inspection of system harnesses and related parts.
• lf there is no abnormality in any related part but the system is abnormal, replace the turbocharger actuator.

#828 Inspection of controller area network resistor
• Measure the resistance between terminals 1 and 2.

• If the measurement is out of specification, replace the controller area network resistor.

 

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