Functional Tests

Active Test Modes
In addition to retrieving DTCs, the GEM can also be commanded to turn on lamps, relays or solenoids. This eliminates the need to perform more traditional pinpoint tests and speeds up repair times. The following active mode tests are available.

Front Windshield Wipers
The NGS Tester can command the GEM to turn on or to turn off the:
- speed relay
- wiper relay
- washer relay

Warning Lamps and Chimes
The NGS Tester can command the GEM to turn on or to turn off the:
- door ajar lamp
- seat belt lamp
- chime

Battery Saver/Illuminated Entry
The NGS Tester can command the GEM to turn on or to turn off the:
- battery saver relay
- illuminated entry relay

Rear Window Defrost
The NGS Tester can command the GEM to turn on or to turn off the rear window defrost relay. When the relay is energized, the lighted rear window defrost switch illuminates.

One-Touch Window/Accessory Delay
The NGS Tester can command the GEM to turn on or to turn off the:
- driver side window relay
- accessory delay relay

Automatic Ride Control (ARC)
The NGS Tester can command the ARC to turn on or to turn off the:
- Automatic ride control compressor
- Inputs and outputs of the ARC system.