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Test D: 4WD Indicator Does Not Turn Off

NOTE: 4WD indicator illuminates when ignition is on. Transfer case and axle pump operate normally.
  1. Review transfer case circuit description and perform necessary inspections. If system review and inspection is complete, go to next step. If system review and inspection is not complete, see TRANSFER CASE CIRCUIT DESCRIPTION  under OPERATION.
  2. Turn ignition on, engine off. Place transfer case in 2WD. If 4WD indicator light is off, check circuit for poor connections and intermittent conditions. See WIRING DIAGRAMS  . If 4WD indicator light is on, go to next step.
  3. Check 4WD indicator circuit (Black/White and Orange/Black wires) for short to ground. See WIRING DIAGRAMS  . Repair as necessary. After repairs, go to step  6 . If circuits are okay, go to next step.
  4. If transfer case is stuck in 4WD, check for mechanical problem. See PRELIMINARY INSPECTION  under TROUBLE SHOOTING. If transfer case is not stuck in 4WD, go to next step.
  5. Replace PCM. After repairs, go to next step.
  6. Operate system to verify repairs. If problem has been corrected, system is okay. If problem has not been corrected, go to step  3 .
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