DIESEL CONTROL SYSTEM
SIGNAL WAVEFORM AND DATA
Fig.1) A/C pressure transducer and VSA position Sensor power supply signals are measured simultaneously.
Variable swirl control actuator position sensor
Aircon pressure sensor power
TERMINAL AND CONNECTOR INSPECTION
Electrical systems consist of a lot of harness and connectors, poor connection of terminals can cause various prob-
Perform checking procedure as follows.
Check damage of harness and terminals : Check terminals for contact resistance, corrosion and deformation.
Check connecting condition of ECM and component connector : Check terminal seperation, damage of locking
Disconnect the pin which requires checking at mail connector and insert it to the terminal at female connector for
Is the problem found?
▶ Repair the trouble causing part and go to "Verification of Vehicle Repair".
▶ Go to "Power Circuit Inspection".
POWER CIRCUIT INSPECTION
Check power circuit voltage
IG KEY "OFF", ENGINE "OFF".
Disconnect A/C pressure transducer connector and variable swirl control actuator connector.
IG KEY "ON".