Operation CHARM
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Saab
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1992
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9000 L4-2290cc 2.3L DOHC
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Repair and Diagnosis
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Powertrain Management
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Computers and Control Systems
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Relays and Modules - Computers and Control Systems
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Engine Control Module
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Description and Operation
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DI/APC Control Module
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Control Module Outputs
Control Module Outputs
Control Module Outputs
1
Ground, sensor ground
2
Ignition trigger pulses
3
Boost pressure control valve
4
Fuel enrichment
5
CHECK ENGINE lamp (MIL)
6
Engine speed
7
Diagnostics communication