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Service Throttle Soon Indicator Always On

WARNING: This page is about a different variant/trim than selected.
  1. Disconnect Powertrain Control Module (PCM) harness connector. Turn ignition switch to RUN position. If indicator goes out, problem is in throttle control system. See TESTS W/CODES article in ENGINE PERFORMANCE section. If indicator remains lit, go to next step.
  2. Using test light, backprobe instrument cluster harness connector terminal No. 21 (White/Black wire) to battery power. If test light lights, repair short to ground in White/Black wire. If test light does not light, repair and/or replace instrument cluster.
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