Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSSAAB19879000 L4-1985CC 2.0L DOHCREPAIR AND DIAGNOSISWINDOWS AND GLASSWINDOWSDIAGRAMSDIAGRAM INFORMATION AND INSTRUCTIONSUSING THE SUB-SYSTEM WIRING DIAGRAM
1987 Saab 9000 L4-1985cc 2.0L DOHC
Using the Sub-System Wiring Diagram
1987 Saab 9000 L4-1985cc 2.0L DOHCSECTION Using the Sub-System Wiring Diagram
An example of two spreads for a sub-system - in this case the interior lighting with time delay - is shown below, together with explanations of the designations used, etc.
Unless otherwise specified, switches are shown in un-actuated condition and relays in de-energized condition.
In the sub-system diagrams, every subsystem is generally shown from the relevant fuse in the electrical distribution box, up to each consumer or sub-system, and then to the earthing point (chassis connection).
The supply to each fuse is shown separately in the section entitled "Positive supply", which also deals with the electrical distribution box, ignition switch, etc.
If +30, for instance, is written above a fuse, the supply from the battery to the respective fuse is shown in the section entitled "Positive supply +30".
Most of the earthing points in the car have a component number, and the various earthing points in each diagram are marked with the appropriate number. The locations of the earthing points with component numbers are specified in the section entitled "Earth connections".
Unless otherwise specified, switches are shown in un-actuated condition and relays in de-energized condition.
In the sub-system diagrams, every subsystem is generally shown from the relevant fuse in the electrical distribution box, up to each consumer or sub-system, and then to the earthing point (chassis connection).
The supply to each fuse is shown separately in the section entitled "Positive supply", which also deals with the electrical distribution box, ignition switch, etc.
If +30, for instance, is written above a fuse, the supply from the battery to the respective fuse is shown in the section entitled "Positive supply +30".
Most of the earthing points in the car have a component number, and the various earthing points in each diagram are marked with the appropriate number. The locations of the earthing points with component numbers are specified in the section entitled "Earth connections".
Spread 1:
Spread 2:
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.