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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Manual Transmission - NV 3500) >> Diagnostic Information & Procedures >> DTC P0704: PCM Detects 7 Changes In Vehicle Speed With No Clutch Pedal Transitions >> Circuit Description

Circuit Description

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Battery voltage is supplied from the ABS fuse to the clutch switch. The clutch switch is a normally-closed switch. When the clutch pedal is released, the clutch pedal position switch signal circuit is pulled up to B+. When the clutch pedal is applied, the switch opens, and the voltage drops to 0 volts.

If the powertrain control module (PCM) detects a specified number of vehicle speed transitions without detecting a clutch switch transition, DTC P0704 will set. DTC P0704 is a type B DTC.

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