D439E Service Manual 5. Service Tool
247
STEP-B Test
STEP-B test is to check if the DLC main cable is broken or short on the condition that communication module
of G-scan is normal. During this test, the power is supplied by DLC cable and Self Test adapter. For the
details of Self Test adapter, please refer to the ‘Connecting Self Test adapter’ in the ‘Basic usage of G-scan.’
<Figure 6: STEP-B Screen>
How to test.
1. Connect the DLC cable to G-scan and connect the Self Test adapter to the other end of DLC cable.
Connect the adapter to the OBD-II connector of the vehicle.
2. Turn on G-scan power and move to the ‘Self Test’ tab of the configuration.
3. Select
and then select or button to perform the test.
<Figure 7: STEP-B Proceeding>
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