{"id":10263,"date":"2018-09-30T15:31:52","date_gmt":"2018-09-30T19:31:52","guid":{"rendered":"https:\/\/sandyblogs.com\/techlink\/?p=10263"},"modified":"2019-01-03T12:02:38","modified_gmt":"2019-01-03T17:02:38","slug":"generation-2-volt-manual-service-disconnect-base-inspection","status":"publish","type":"post","link":"https:\/\/gm-techlink.com\/?p=10263","title":{"rendered":"Generation 2 Volt Manual Service Disconnect Base Inspection"},"content":{"rendered":"

When servicing a 2016-2019 Volt (2nd Generation) high voltage battery, it may be possible to neglect to remove the four fasteners on top for the Manual Service Disconnect (MSD) base (Fig. 6) and lift the high voltage battery cover with the MSD base still attached. As a result, the two high voltage terminals can become strained inside the MSD base and not operate properly when the MSD is reinstalled.<\/p>\n

\"\"Fig. 6<\/strong><\/p>\n

Misalignment of the MSD base and subsequent terminal damage can cause a high resistance connection that causes further damage to the base.<\/p>\n

To help address this condition, an additional step has been added to the high voltage battery cover installation procedure (SI Doc ID 4162125) that calls for checking for terminal damage and proper alignment of the MSD base with the high voltage cover opening.<\/p>\n

When checking the terminals, ensure the terminal fingers are aligned to the terminal slot. (Fig. 7, #1) The terminal fingers should be\u00a0centered to the terminal slot and should not be misaligned, bent or deformed. (Fig. 7, #2, #3, #4)<\/p>\n

\"\"Fig. 7<\/strong><\/p>\n

The proper vertical alignment (Fig. 8, A), or misalignment (Fig. 8, B), of the terminals depends on the positioning of the orange high voltage cable.<\/p>\n

\"\"Fig. 8<\/strong><\/p>\n

If the cable is moved or manipulated, the terminals may rotate out of the correct position. (Fig. 9)<\/p>\n