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Home >> GMC >> 1998 >> C3500 HD 7.4 J, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 22 (Transfer Case - Diagnosis - New Venture 246) >> DTC Tests >> DTC C0362: 4L Discrete Output Circuit High >> Circuit Description

Circuit Description

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 1998 GMC Yukon, 1998 GMC Suburban, 1998 GMC Pickup, 1998 GMC Cab & Chassis, and 1998 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.

The 4L discrete output circuit is used to notify VCM/PCM that vehicle is in 4WD low range (4L). VCM/PCM supplies 12 volts on this circuit. ATC control module supplies ground on this circuit when in 4L range. This DTC detects an ATC control module problem or short to voltage on Gray/Black wire circuit.

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