Spectrum 3.0L GM - DTC 168 System Voltage Low;High

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DTC 168 System Voltage Low/High

Conditions for Setting the DTC

 System Voltage

 Check Condition-Ignition ON

 Voltage high: battery voltage above 18.5 volts with the Key ON.

 Voltage low: battery voltage below 5.29 volts while the engine is running

 MIL-On

Circuit Description

The system monitors battery voltage and will set a code if the voltage is out of range.