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Home >> Ford >> 2012 >> Explorer Limited, 3.5 8, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 275 (Four Wheel Drive (4WD) Systems) >> Diagnosis And Testing >> Four Wheel Drive (4WD) Systems >> Symptom Chart

Symptom Chart

WARNING: This page is about a different car, the 2013 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.

Diagnostics in this service information assumes a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to DIAGNOSTIC METHODS for information about these practices.

In most circumstances, the PCM  sets DTCs to help guide with diagnostics. Refer to the DTC CHART  before using the symptom chart. The Condition column lists the vehicle condition. The Source column lists a detailed vehicle condition. The Action column lists the action to be performed to determine the cause of the condition. Each action lists the components that can caused the system and the individual components in that system. The components are listed in order of disassembly. Use the list of components and the required action to focus on disassembly inspections for the root cause of the concern.

SYMPTOM DESCRIPTION

Condition Possible Sources Action
  • Unable to duplicate customer concern; no DTCs present
  • The concern description is inaccurate
  • Vehicle has no or inadequate torque at rear wheels
  • Fuse(s)
  • Wiring, terminals or connectors
  • ATC  solenoid
  • AWD  relay
  • PCM
  • Wheels/tires
  • PTU  mechanical failure
  • Rear axle
  • Vehicle binds in a turn or resists turning/pulsates or shudders in a straight line
  • Wheels/tires
  • PTU  mechanical failure
  • Driveshaft
  • Wiring, terminals or connectors
  • ATC  solenoid
  • AWD  relay
  • PCM
  • Brake system
  • Wheel bearings
  • Halfshafts
  • ABS  system
  • Tire/axle out of acceptable range
  • Wheels/tires
  • ABS  system