1. Disconnect the negative battery cable..
2. Disconnect the connector..
3. Verify the resistance between bass-box terminals.

If not within the specification, replace the bass-box.

0.9—1.1 ohms
Auxiliary Jack/Usb Port Removal/Installation
Bass Box Removal/InstallationElectric Power Steering Oil Pump Component Disassembly/Assembly
CAUTION:
The internal parts of the EHPAS control module and motor could be damaged
if they receive an impact. Be careful when handling the EHPAS control module
and motor to prevent the component from getting hit. Replace the electric power
steering oil pump component if it has recei ...
Check Valve Inspection [Skyactiv G 2.0]
Airflow Inspection
1. Remove the vacuum hose..
2. Blow air into the vacuum hose using your mouth from the vacuum pump side and
verify that the air flows to the intake manifold side, then blow air from the intake
manifold side and verify that the air does not flow to the vacuum pump side.
...
Front ABS Wheel Speed Sensor Removal/Installation
1. Remove in the order indicated in the table.
2. Install in the reverse order of removal.
3. After installation, verify that there is no twisting in the front ABS wheel-speed
sensor.
1
Connector
2
Front ABS wheel-speed sensor
...