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Lights On Indicator Light

  1. Disconnect Main Instrument Unit (MIU) 20-pin connector at rear of instrument cluster. See Figure . Connect test light between 20-pin connector terminal No. 9 (Gray/Red wire) and ground. Turn ignition on. Turn headlights on. If test light comes on, replace bulb. After repair, go to next step. If test light does not come on, repair open circuit in Gray/Red wire between 20-pin connector terminal No. 9 and light switch connector terminal No. 6.
  2. Clear DTCs. Using Tech 1 scan tool, perform a lights on functional test. If light functions, system is okay. If light does not function, replace MIU ECU. See ELECTRONIC CONTROL UNIT (ECU)  under REMOVAL & INSTALLATION.
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