Test 1B: Testing DRB-II

Although only manufacturer can physically test DRB-II, the condition of DRB-II can be determined by using some simple situation techniques and process of elimination.

1. Turn ignition switch to OFF position. Disconnect DRB-II, adapter cable and cartridge.
2. Find a second vehicle identical in equipment as original vehicle. Connect DRB-II assembly to second vehicle. Turn ignition switch to ON position. Use DRB-II as on original vehicle.
3. If same condition occurs, DRB-II or adapter cable is defective. Replace as required. If same condition DOES NOT occur, problem is not DRB-II or adapter cable. Return to diagnostic test chart.