LW2 V6-3.0L VIN R (2000)
Grounding splice pack repair kits are available through Saturn Service Parts. The repair kits include the splice pack with terminals attached to a short
length of wire and crimp and seal splices. Use these kits if a grounding splice pack needs to be replaced.
An insulation displacement connector (IDC) splice pack repair kit is also available through Saturn Service Parts. The IDC repair kit includes a splice clip
and a heat shrink tube. Use this kit to repair IDC splice packs.
SIR System
Refer to "Disabling and Enabling the SIR System" located.
How To Use This Section Of The Manual
The first part of this section provides:
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General description of the type of circuits.
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Explanation of the types of protection devices and fuse blocks.
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Listings of the types of fuses and relays.
The second part of this section provides:
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Clean and simple electrical circuit schematics
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Graphic overview of the circuit shown on the schematic
Circuits
Automotive circuits are divided into three categories: power, signal (control or data), and ground circuits.
Power Circuits
Power circuits are classified as those cables that provide battery or mechanically switched battery voltages to electrical loads. Some examples of these
circuits are:
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Ignition circuit - 300
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Battery circuit - 1
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Headlamp circuit - 40
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Defog circuits - 193, 1240, 292, 293
Signal (Control Or Data) Circuits
Signal circuits are classified as those cables that provide signal voltages from one electrical device to another device. Examples of these signals and
devices are:
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Evaporative Emission Canister Purge Solenoid to PCM - 428
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Fuel Level Sensor to PCM - 30
Signal wires are usually current limited by one of the devices that is attached to the wire. In the above examples the PCM and fuel gage limit the
current in these circuits through the use of electronics (pull up or pull down resistors, transistors, etc.). Signal wire current levels for short circuit
conditions normally do not exceed operating levels by an appreciable amount.
Ground Circuits
Ground circuits are classified as those circuits that provide a ground (zero voltage level with reference to the battery) to the electrical system.
Examples of these circuits are:
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I/P Chassis ground - 350, 250
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PCM ground - 551
Since ground circuits are already shorted to ground, the current level is based on the electrical load resistance. Like signal circuits, ground circuit
cable selection is a function of operating current.
