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Home >> Jeep >> 1996 >> Grand Cherokee Limited, 5.2 Y >> Repair and Diagnosis >> External Pages >> Different car >> Section 19 (Engine Controls - Tests W/Codes - Body Control Computer (Convert)) >> Self-Diagnostic Tests >> Test 40A - Dimming Interior Displays

Test 40A - Dimming Interior Displays

WARNING: This page is about a different car, the 1994 Chrysler LeBaron. However, it is still accessible from the selected car via links, so may be relevant.
  1. Move dimmer control lever to center position. Ensure parking lamps are off. Using DRB, read park lamp switch status. If DRB displays STEP UP : OFF, go to TEST 40B. If DRB does not display STEP UP : OFF, go to next step.
  2. Turn park lamps on. If DRB does not display STEP UP : OFF, go to TEST 40C. If DRB displays STEP UP : OFF, go to next step.
  3. Using DRB, measure panel lamp sensor voltage. Move dimmer control lever from HIGH to LOW position. If DRB display changes between zero and 5 volts, go to TEST 40D. If DRB display does not change between zero and 5 volts, go to TEST 40E.
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