OBD Guide

B1689

Autolamp Delay Circuit Failure

Severity
Low
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$11–56 (est.)

Symptoms

  • No headlight turn-off delay
  • Headlights do not turn on automatically
  • Incorrect operation of the automatic lighting system

Causes

  • Open or short circuit in wiring harness
  • Faulty delay relay
  • Problems with the lighting control unit
  • Contact corrosion

How to Fix

  1. Check wiring harness for damage
  2. Check delay relay
  3. Diagnose the lighting control unit
  4. Clean or replace corroded contacts

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