Diagnostic Aids

Suspected intermittents or opens at connectors can be detected with diagnostic service probe which permits voltage to be measured on wires without unplugging connectors. Ensure terminals make good connection.
When diagnosing intermittent problems, select MALF HISTORY from "Scan" tester ABS menu. Supplemental data can be used to duplicate problem.
Circuit No. 1933 should have battery voltage at all times.

Fig 1: Code 14 Schematic - Switched Battery Circuit Open

Courtesy of GENERAL MOTORS CORP.

Fig 2: Code 14 Flow Chart - Switched Battery Circuit Open

Courtesy of GENERAL MOTORS CORP.