Turbocharger Actuator Operation Check

Circuit Diagram

[A]:	ECM connector (View: [a])	B1:	Turbocharger actuator position sensor power supply circuit	1.	ECM
A1:	Turbocharger actuator (+) drive circuit	B2:	Turbocharger actuator position sensor signal circuit	2.	Turbocharger actuator motor
A2:	Turbocharger actuator (–) drive circuit	B3:	Turbocharger actuator position sensor ground circuit	3.	Turbocharger actuator position sensor

Troubleshooting

Step	Action	Yes	No
1	Output test 1)When ignition is “OFF”, connect SUZUKI scan tool to DLC. 2)Check condition of main and circuit fuses. If not, replace fuse and check for short circuit to ground. 3)Set ignition “ON”. 4)Select “Turbocharger Test” function in “Active Test” mode on SUZUKI scan tool. 5)Check turbocharger actuator operation sound. Is check result OK?	End.	Go to Step 2.
2	Turbocharger actuator (+) drive circuit and (–) drive circuit check 1)When ignition is “OFF”, disconnect “D01” connector from ECM and turbocharger actuator connector. 2)Check for proper terminal connection to “D01” connector and turbocharger actuator connector. 3)If connections are OK, check the following points. •Resistance of “A1” and “A2” circuits: less than 1 Ω •Resistance between each of “A1” and “A2” circuits and ground: infinity •Resistance between “A1” circuit terminal and other terminal at turbocharger actuator connector: infinity •Resistance between “A2” circuit terminal and other terminal at turbocharger actuator connector: infinity •Voltage of “A1” and “A2” circuits: approx. 0 V (When ignition is “ON”.) Is check result OK?	Go to Step 3.	Repair or replace defective wire harness.
3	Turbocharger actuator check 1)Check turbocharger actuator. Is check result OK?	Replace ECM and recheck turbocharger actuator operation.	Replace turbocharger with exhaust manifold.