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 MANUALSSAAB1992900 L4-2118CC 2.1L DOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULEDIAGRAMSDIAGRAM INFORMATION AND INSTRUCTIONSABBREVIATIONS
1992 Saab 900 L4-2118cc 2.1L DOHC
Abbreviations
1992 Saab 900 L4-2118cc 2.1L DOHCSECTION Abbreviations
A number of abbreviations are used in this system. What they stand for is explained in the following table:
Abbreviations Significance
ABS Anti-lock Brake System (ABS)
A/C Air Conditioning
ACC Automatic Climate Control
AIC Automatic Idling Control
APC Automatic Performance Control (Turbocharger Boost Pressure Control System)
ATA Anti-theft alarm
AUT Automatic Transmission
BOB Break Out Box
BPC Boost Pressure Control
C1 Environmental Class 1
CDC CD Changer
CI Continuous Injection
CONV Cabriolet (Convertible)
DI Direct Ignition System (Electronic Ignition)
DICE Dashboard Integrated Central Electronics
EDC Engine management system for diesel engines
EDU Electronic Display Unit (Trip Computer)
ETS Electronic Throttle System
EZK Elektronische Zundung mit Klopfkuntrolle (Breakerless Ignition System with Knock Sensor)
I-BUS Instrument Bus
ISAT Intelligent Saab Tester (Scan Tool)
ICE Integrated Central Electronics
LHD Left Hand Drive
LH Luftmassenmesser Hitzdraht (Air Mass Meter with Hot Filament)
MAN Manual Gear Box
MCC Manual Climate Control
MIU Main Instrument Unit
OBDII On Board Diagnostics II
ORVR Onboard Refuelling Vapor Recovery
P-BUS Powertrain Bus
PMM Power Mirror Memory
PSM Power Seat Memory
RHD Right Hand Gearbox
SID Saab Information Display
SRS Airbag (Supplementary Restraint System)
STC Control module for soft top (Soft Top Controller)
TC Traction Control
TCM Transmission Control Module
TCS Traction Control System
TSAS Top Stack Actuation System
TSI Timing Service Instrument
TTS Twin Throttle System
TWICE Theft Warning & Integrated Central Electronics
VSS Anti-Theft Alarm With Immobilizer
3D 3-Door Model
5D 5-Door Model
Abbreviations Significance
ABS Anti-lock Brake System (ABS)
A/C Air Conditioning
ACC Automatic Climate Control
AIC Automatic Idling Control
APC Automatic Performance Control (Turbocharger Boost Pressure Control System)
ATA Anti-theft alarm
AUT Automatic Transmission
BOB Break Out Box
BPC Boost Pressure Control
C1 Environmental Class 1
CDC CD Changer
CI Continuous Injection
CONV Cabriolet (Convertible)
DI Direct Ignition System (Electronic Ignition)
DICE Dashboard Integrated Central Electronics
EDC Engine management system for diesel engines
EDU Electronic Display Unit (Trip Computer)
ETS Electronic Throttle System
EZK Elektronische Zundung mit Klopfkuntrolle (Breakerless Ignition System with Knock Sensor)
I-BUS Instrument Bus
ISAT Intelligent Saab Tester (Scan Tool)
ICE Integrated Central Electronics
LHD Left Hand Drive
LH Luftmassenmesser Hitzdraht (Air Mass Meter with Hot Filament)
MAN Manual Gear Box
MCC Manual Climate Control
MIU Main Instrument Unit
OBDII On Board Diagnostics II
ORVR Onboard Refuelling Vapor Recovery
P-BUS Powertrain Bus
PMM Power Mirror Memory
PSM Power Seat Memory
RHD Right Hand Gearbox
SID Saab Information Display
SRS Airbag (Supplementary Restraint System)
STC Control module for soft top (Soft Top Controller)
TC Traction Control
TCM Transmission Control Module
TCS Traction Control System
TSAS Top Stack Actuation System
TSI Timing Service Instrument
TTS Twin Throttle System
TWICE Theft Warning & Integrated Central Electronics
VSS Anti-Theft Alarm With Immobilizer
3D 3-Door Model
5D 5-Door Model
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.