Exterior Light Test 1A - Identifying Exterior Lighting System Problems

WARNING: This page is about a different variant/trim than selected.

NOTE: Perform SYMPTOM ID TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see CONNECTOR IDENTIFICATION in appropriate BODY CONTROL COMPUTER section in this article. For wiring diagrams, see WIRING DIAGRAMS at the end of article. Perform TEST VER-1A after each repair.

CAUTION: Always turn ignition switch to OFF position prior to disconnecting or connecting any module connector.

Exterior lighting system uses a headlight time delay function. Identify problems(s) listed in EXTERIOR LIGHT SYSTEM DIAGNOSTIC TEST DIRECTORY table and perform indicated test(s).

NOTE: Headlight time delay will only operate when ignition switch is turned off, while headlights are still on and headlight switch is turned to OFF position within 45 seconds of ignition switch being turned off. Body Control Module (BCM) will provide a 90-second time delay before turning headlights off.

EXTERIOR LIGHT SYSTEM DIAGNOSTIC TEST DIRECTORY

Problem ⁽¹⁾

Perform

Headlights Will Not Turn Off

EXTERIOR LIGHT TEST 2A

Headlight Time Delay Does Not Function

EXTERIOR LIGHT TEST 3A

⁽¹⁾	If headlights do not operate from headlight switch, see EXTERIOR LIGHTS article.