TEST 1B - Blank DRB-II Message Screen

NOTE: For wiring diagrams, see appropriate chassis wiring diagram in the WIRING DIAGRAMS Section.

Using an external ohmmeter, check resistance between terminal No. 3 at CCD bus diagnostic connector and ground. If resistance is more than 5 ohms, repair open in wiring to terminal No. 3. Perform VERIFICATION TEST 6A .
If resistance is less than 5 ohms, test DRB-II. Refer to TEST 5A . If DRB-II is good, replace DRB-II adapter cable. Perform VERIFICATION TEST 6A . If DRB-II is defective, replace DRB-II. Perform VERIFICATION TEST 6A .