Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
B2725:03 Transfer Case Range Selection Switch Circuit Low Voltage
B2725:07 Transfer Case Range Selection Switch Circuit High Voltage
B2725:08 Transfer Case Range Selection Switch Circuit Performance Signal Invalid
To diagnose the B2725 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.
The Transfer Case Shift Control Switch (TCSCS) allows the driver to select between ranges. The Transfer Case Control Module (TCCM) supplies a regulated 5 V, to the switch through the 5-volt reference circuit. The current travels through the specific resistor of the currently selected mode, each mode has its own resistor. The current is then returned to the Transfer Case Control Module through the switch signal circuit. The Transfer Case Control Module continuously monitors the switch signal circuit to determine whether the driver has requested a mode change. The Diagnostic Trouble Code (DTC) sets when the low side driver is ON, the Transfer Case Control Module measures an invalid voltage on the Four-Wheel Drive Switch Signal circuit.
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