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Cold Start Injector Time Switch Test

  1. Unplug cold start injector time switch connector. For cold start injector time switch location, See Figure.
  2. Using ohmmeter, check resistance between terminals "STA" & "STJ" at appropriate temperature. See Fig 1. See COLD START INJECTOR TIME SWITCH SPECIFICATIONS table. There should be continuity between terminal "STA" and ground. Replace switch if not within specification.
NOTE: "STA" terminal is fed current from ignition switch during cranking. "STJ" goes to cold start injector.
COLD START INJECTOR TIME SWITCH SPECIFICATIONS

Ohms Condition
25-45 Below 59°F (15°C)
65-85 Above 86°F (30°C)
25-85 "STA" To Ground
Fig 1: Checking Typical Cold Start Injector Time Switch
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