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Home >> GMC >> 1991 >> Value Van 7.4 N >> Repair and Diagnosis >> External Pages >> Different car >> Section 82 (Engine Controls - Tests W/Codes - Body Control Computer) >> Self-Diagnostic Tests >> Test 59A - Headlamps Will Not Turn On

Test 59A - Headlamps Will Not Turn On

WARNING: This page is about a different car, the 1995 Plymouth Voyager, 1995 Plymouth Grand Voyager, 1995 Dodge Grand Caravan, 1995 Dodge Caravan, and 1995 Chrysler Town & Country. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Always turn ignition off prior to disconnecting or connecting any module connector.
NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION  . For appropriate wiring diagram, see WIRING DIAGRAMS  section at the end of this article. Perform TEST VER-1B after each repair.
NOTE: This test is only valid for vehicles equipped with compass/mini-trip computer.
  1. Turn ignition on. Turn headlamp switch on. If headlamps do not operate by headlamp switch, see appropriate INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT section. If headlamps operate by headlamp switch, go to next step.
  2. Turn headlamp switch off. Turn ignition off. If headlamps remain on for 60 seconds and then go off, headlamp system is okay at this time. If headlamps do not remain on for 60 seconds and then go off, go to next step.
  3. Disconnect Body Control Module (BCM) Natural connector. BCM is located behind left side knee panel. Check, clean and repair connections as needed. If connections are okay, go to next step.
  4. Connect a jumper wire between chassis ground and BCM Natural connector terminal No. 20 (Orange/White wire). If headlamps do not operate, repair open Orange/White wire. If headlamps operate, replace BCM.
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