Transfer Case Shift Motor Circuit

What this code means

Malfunction in the electric motor that shifts the transfer case between ranges.

Symptoms

• Cannot shift between 2WD and 4WD
• 4WD light flashing
• Grinding noise during shift attempt
• Transfer case stuck in range

Common causes

• Shift motor failure
• Motor wiring damage
• Motor connector corroded
• Transfer case internal binding preventing shift

Diagnostic steps

1. Test shift motor by commanding range change
2. Check motor winding resistance
3. Inspect connector for corrosion
4. Listen for motor operation during shift command
5. Check for mechanical binding in transfer case

Repair notes

Replace transfer case shift motor. If binding is present, service transfer case internally.

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