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Test B: Actuator Circuit Shorted

NOTE: This test is associated with DTC 28.
  1. Check Circuit Resistance -  Ensure ignition switch is in OFF position. On models without air suspension, disconnect EVO control module 14-pin connector C214. On models with air suspension, disconnect Black EVO control module 13-pin connector C215 and Gray EVO control module 13-pin connector C216. On all models, disconnect EVO actuator harness connector. On models without air suspension, measure resistance between pin No. 13 (Gray/Orange wire) and pin No. 14 (Tan/Yellow wire) of EVO control module connector C214. See Figure. On models with air suspension, measure resistance between pin No. 14 (Gray/Orange wire) and pin No. 26 (Tan/Yellow wire) of Black EVO control module connector C215. See Figure. If resistance is less than 100,000 ohms, repair short circuit between Gray/Orange wire and Tan/Yellow wire. If resistance is 100,000 ohms or more, go to next step.

  2. Check Actuator Resistance

    Measure resistance between EVO actuator terminals. If resistance is less than 5 ohms, replace EVO actuator. If resistance is 5 ohms or more, replace EVO control module. Reconnect all components and repeat actuator output circuit test.
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