Test Description

DTC 73 will set if EBCM/EBTCM detects a short to ground in PMV fluid level switch circuit No. 848 (Tan wire), circuit No. 849 (Pink wire), circuit No. 853 (Light Blue/Black wire) and circuit No. 1659 (Light Blue wire). DTC 73 will also set if an open exists in circuit No. 1050 (Black or Black/White wire).

Fig 1: DTC 73 Schematic

Courtesy of GENERAL MOTORS CORP.

Fig 2: DTC 73 Flow Chart

Courtesy of GENERAL MOTORS CORP.