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.
To diagnose the P1770 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 Differential Lock Solenoid or SLD Solenoid controls hydraulic pressure applied to the center differential clutch and maintains a limited-slip differential level. The Engine Control Module (ECM) determines optimum operating pressure according to signals from the throttle position sensor, and front and rear speed sensors, and controls the volume of current flow to the SLD solenoid. The Diagnostic Trouble Code (DTC) is set when the SLD solenoid output signal is on for 3.3 milliseconds or more with a duty ratio of at least 5 percent.
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