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 DIAGNOSISDIAGRAMSCONNECTOR VIEWSCOMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULE
1987 Saab 9000 L4-1985cc 2.0L DOHC
Engine Control Module
1987 Saab 9000 L4-1985cc 2.0L DOHCSECTION Engine Control Module
25 Position ECU Plug:
Pin Layout
System
LH-Jetronic
Location
Passenger side kick panel
Terminal ID
1 - Coil (-) Trigger signal input (Blu)
2 - Coolant Temperature Sensor (Yel)
3 - Idle Switch (Gry)
4 - Start input (Org)
5 - Shield Ground 2 wires (Blk)
6 - Air Mass Meter Ground (Blu/Wht)
7 - Air Mass Meter Load (Org)
8 - Air Mass Meter Burn-off (Red/Wht)
9 - Main Relay Supply (Brn/Wht)
10 - ISC Valve Control (Blu/Wht)
11 - Ground (Blk)
12 - Full Load Throttle Switch (Grn/Red) (Blu)
13 - Injector Driver Output (Grn/Red)
14 - Air Mass Meter CO Adjustment (Wht)
15 - Ground (Blk)
16 - Air Conditioning Relay (Red/Wht)
17 - Fuel Pump Relay Control (Vio)
18 - Ignition Switch Power (Grn/Wht)
19 - Check Engine Light (Vio/Wht)
20 - Oxygen Sensor Input
21 - Main Relay Control (Yel/Wht)
22 - Integrator Output (Grn)
23 - ISC Valve Control (Yel/Red)
24 - Output to EZK ECU [No connection for systems not equipped.]
25 - Ground (Blk/Wht)
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.