DTC P1650 or P1651 (QDM Module B - Cooling Fan Relay)

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Circuit Description

Schematic

A quad driver module (QDM) is an electronic switch which completes a ground circuit when switched ON. The QDM independently controls 4 separate outputs. A load is connected between battery voltage and the QDM allowing the QDM driver to control the output. Each QDM has fau...

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Document Tags

Document Title: DTC P1650 or P1651 (QDM Module B - Cooling Fan Relay)

circuit

quad

driver

voltage

output

fault

expects

volts

scan

tool

open

short

lamp