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Home >> Suzuki >> 2001 >> XL-7 Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 159 (Anti-Lock Braking System) >> Diagnostic Information And Procedures >> DTC C1258: 4WD Switch Circuit Faulty >> For 4 Wheel Drive Vehicle >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2003 Suzuki Vitara. However, it is still accessible from the selected car via links, so may be relevant.

During 2 wheel drive operation, 4WD switch is open (OFF), switched ignition voltage is applied through 4WD indicator lamp and sent to ECM (PCM) and monitored by EBCM.

When the operator selects 4 wheel drive, 4 wheel drive switch is closed (ON), ECM (PCM) respond by grounding 4 wheel drive circuit which will illuminate 4WD indicator lamp. EBCM will sense that voltage is pulled low on the 4WD lamp circuit, indicating vehicle is in 4WD.

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