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Code 7 (No Isolate Valve Self-Test)

  1. Turn ignition off. Unplug electro-hydraulic valve connector. Measure resistance between isolation solenoid pin and ground pin at valve. See Figure . If resistance is less than 3 ohms, replace valve. If resistance is 3 ohms or more, turn ignition off, and disconnect battery.
  2. With electro-hydraulic valve connector still apart, unplug control module connector. Measure resistance between module pin No. 13 and chassis ground. See Figure . If resistance is 20,000 ohms or more, replace control module. If resistance is less than 20,000 ohms, repair short between electro-hydraulic valve and control module.
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