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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSSAAB19919000 CD, 2.3 M, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS - SYSTEM/COMPONENT TESTSCOMPUTERIZED ENGINE CONTROLSFUEL INJECTION CONTROL UNITGROUND CIRCUITS
1991 Saab 9000 CD, 2.3 M, Standard
Ground Circuits
1991 Saab 9000 CD, 2.3 M, StandardSECTION Ground Circuits
- Turn ignition off. Connect negative lead of ohmmeter to ground. Using positive lead, backprobe ECU terminals No. 5 and No. 17 (Black wires). Resistance should be zero ohms. If not, repair open wire to ground.
- Connect negative lead of DVOM to a good ground. Using positive lead, backprobe ECU terminals No. 5 and No. 17 (Black wires). With engine running, DVOM should indicate less than one volt. If higher than one volt, check for opens, corrosion, or loose connection on ground leads.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.