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 MANUALSSAAB20009-3 CONVERTIBLE (9400) L4-2.0L TURBO (B205)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSINFORMATION BUSTESTING AND INSPECTIONNO COMMUNICATION WITH THE TRIONIC T5CHECKING TRIONIC CONTROL MODULE POWER SUPPLY AND GROUND - II
2000 Saab 9-3 Convertible (9400) L4-2.0L Turbo (B205)
Checking Trionic Control Module Power Supply and Ground - II
2000 Saab 9-3 Convertible (9400) L4-2.0L Turbo (B205)SECTION Checking Trionic Control Module Power Supply and Ground - II
Checking the Trionic Control Module Power Supply and Ground Connection
Unplug the connector.
- Control module, TRIONIC (430)
- Turn the ignition switch to the ON position.
- Connect test lamp 86 11 857 between pin 60 on the control module female connector and a good grounding point.
- The test should light.
Checking the wiring harness.
Jiggle the leads and in-line connectors at several places and in different directions to reveal intermittent breaks and short circuits in the wiring harness. Observe the multimeter, test lamp or diagnostic tool while doing this.
Is the function correct?
NO - Rectifying the Lead - III
YES - Continue with Checking the Trionic Control Module Power Supply and Ground Connection
- Connect test lamp 86 11 857 between pin 60 on the control module female connector and pin 25.
- The test lamp should light.
Checking the wiring harness.
Jiggle the leads and in-line connectors at several places and in different directions to reveal intermittent breaks and short circuits in the wiring harness. Observe the multimeter, test lamp or diagnostic tool while doing this.
Is the function correct?
NO - Rectifying the Lead - III
YES - Continue with Checking the Trionic Control Module Power Supply and Ground Connection
- Connect test lamp 86 11 857 between pin 1 of the female connector and a good grounding point.
- The test lamp should light.
Checking the wiring harness.
Jiggle the leads and in-line connectors at several places and in different directions to reveal intermittent breaks and short circuits in the wiring harness. Observe the multimeter, test lamp or diagnostic tool while doing this.
Is the function correct?
NO - Rectifying the Lead - III
YES - Continue with Checking the Trionic Control Module Power Supply and Ground Connection
- Connect test lamp 86 11 857 between pin 1 on the control module female connector and pin 25.
- The test lamp should light.
Checking the wiring harness.
Jiggle the leads and in-line connectors at several places and in different directions to reveal intermittent breaks and short circuits in the wiring harness. Observe the multimeter, test lamp or diagnostic tool while doing this.
Is the function correct?
NO - Rectifying the Lead - III
YES - Continue with Checking the Trionic Control Module Power Supply and Ground Connection
- Connect test lamp 86 11 857 between pin 48 on the control module female connector and a good grounding point.
- The test lamp should light.
Checking the wiring harness.
Jiggle the leads and in-line connectors at several places and in different directions to reveal intermittent breaks and short circuits in the wiring harness. Observe the multimeter, test lamp or diagnostic tool while doing this.
Is the function correct?
NO - Rectifying the Lead - III
YES - Continue with Checking the Trionic Control Module Power Supply and Ground Connection
- Connect test lamp 86 11 857 between pin 48 on the control module female connector and pin 25.
- The test lamp should light.
Checking the wiring harness.
Jiggle the leads and in-line connectors at several places and in different directions to reveal intermittent breaks and short circuits in the wiring harness. Observe the multimeter, test lamp or diagnostic tool while doing this.
Is the function correct?
NO - Rectifying the Lead - III
YES - Final Check
RENDER: 1.0x
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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.