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Home >> Saab >> 2005 >> 9-2X Aero, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine (Diagnostics) - 2.0L >> Technical Data >> Engine Control Module (ECM) I/O Signal >> Electrical Specification

Electrical Specification

Fig 1: Identifying Engine Control Module Electrical Connectors
G03873744Courtesy of SAAB-SCANIA OF AMERICA, INC.
ENGINE CONTROL MODULE ELECTRICAL SPECIFICATION

Content Connector No. Terminal No. Signal (V) Note
Ignition SW ON (Engine OFF) Engine ON (Idling)
Crankshaft position sensor Signal (+) B135 2 0 - 7 - +7 Sensor output waveform
Signal (- ) B135 11 0 0 -
Shield B135 21 0 0 -
Camshaft position sensor Signal (+) B135 1 0 - 7 - +7 Sensor output waveform
Signal (- ) B135 10 0 0 -
Shield B135 21 0 0 -
Throttle position sensor Signal B135 7 Fully closed: 0.2 - 1.0
Fully opened: 4.2 - 4.7
-
Power supply B135 9 5 5 -
GND (sensor) B135 19 0 0 -
Rear oxygen sensor Signal B135 17 0 0 - 0.9 -
Shield B135 26 0 0 -
GND (sensor) B135 19 0 0 -
Front oxygen (A/F) sensor heater Signal 1 B84 5 0 - 1.0 - Waveform
Signal 2 B84 4 0 - 1.0 - Waveform
Rear oxygen sensor heater signal B137 13 0 - 1.0 - Waveform
Engine coolant temperature sensor Signal B135 18 1.0 - 1.4 1.0 - 1.4 After warm-up the engine.
GND (sensor) B135 19 0 0 After warm-up the engine.
Vehicle speed signal B134 1 0 or 5 0 or 5 "5" and "0" are repeatedly displayed when vehicle is driven.
Mass air flow sensor Signal B136 13 - 0.3 - 4.5 -
Shield B136 8 0 0 -
GND B136 7 0 0 -
Intake air temperature sensor signal B135 27 0.3 - 4.6 0.3 - 4.6 -
Exhaust temperature sensor Signal B135 16 - 2.7 - 2.8 (750°C) -
GND (sensor) B135 19 0 0 -
Tumble generator valve position sensor RH Signal B135 23 Fully closed: 3.8 - 4.9
Fully opened: 0.2 - 0.9
-
Power supply B135 9 5 5 -
GND (sensor) B135 19 0 0 -
Tumble generator valve position sensor LH Signal B135 13 Fully closed: 3.8 - 4.9
Fully opened: 0.2 - 0.9
-
Power supply B135 9 5 5 -
GND (sensor) B135 19 0 0 -
Tumble generator valve RH (open) B136 4 0 or 10 - 13 0 or 13 - 14 Waveform
Tumble generator valve RH (close) B136 5 0 or 10 - 13 0 or 13 - 14 Waveform
Tumble generator valve LH (open) B136 10 0 or 10 - 13 0 or 13 - 14 Waveform
Tumble generator valve LH (close) B136 11 0 or 10 - 13 0 or 13 - 14 Waveform
Wastegate control solenoid valve B84 24 0 or 10 - 13 0 or 13 - 14 Waveform
Starter switch B134 16 0 0 Cranking: 8 - 14
A/C switch B134 2 ON: 10 - 13
OFF: 0
ON: 13 - 14
OFF: 0
-
Ignition switch B134 5 10 - 13 13 - 14 -
Neutral position switch (MT model) B134 8 ON: 10 - 13
OFF: 0
ON: 13 - 14
OFF: 0
-
Neutral position switch (AT model) B134 8 ON: 0
OFF: 10 - 13
ON: 0
OFF: 13 - 14
-
Test mode connector B134 14 5 5 When connected: 0
Knock sensor Signal B135 4 2.8 2.8 -
Shield B135 22 0 0 -
Back-up power supply B84 10 10 - 13 13 - 14 Ignition switch "OFF": 10 - 13
Control unit power supply B84 2 10 - 13 13 - 14 -
B84 3 10 - 13 13 - 14 -
Sensor power supply B135 9 5 5 -
Ignition control #1 B137 24 0 13 - 14 Waveform
#2 B137 23 0 13 - 14 Waveform
#3 B137 22 0 13 - 14 Waveform
#4 B137 21 0 13 - 14 Waveform
Fuel injector #1 B84 1 10 - 13 1 - 14 Waveform
#2 B137 6 10 - 13 1 - 14 Waveform
#3 B137 5 10 - 13 1 - 14 Waveform
#4 B137 4 10 - 13 1 - 14 Waveform
Idle air control solenoid valve Signal B137 10 0 or 13 - 14 0 or 13 - 14 Waveform
Fuel pump control unit Signal 1 B134 13 0 or 5 0 or 5 -
Signal 2 B137 15 10 - 13 10 - 13 -
A/C relay control B84 27 ON: 0.5 or less
OFF: 10 - 13
ON: 0.5 or less
OFF: 13 - 14
-
Radiator fan relay 1 control B84 17 ON: 0.5 or less
OFF: 10 -13
ON: 0.5 or less
OFF: 13 -14
-
Radiator fan relay 2 control B84 28 ON: 0.5 or less
OFF: 10 - 13
ON: 0.5 or less
OFF: 13 - 14
Model with A/C only
Malfunction indicator light B84 15 - - Light "ON": 1 or less
Light "OFF": 10 - 14
Engine speed output B137 9 - 0 - 13, or more Waveform
Purge control solenoid valve B84 16 ON: 1 or less
OFF: 10 - 13
ON: 1 or less
OFF: 13 - 14
Waveform
Manifold absolute pressure sensor Signal B135 8 1.7 - 2.4 1.1 - 1.6 -
Power supply B135 9 5 5
GND (sensor) B135 19 0 0
Fuel tank pressure sensor Signal B135 15 2.3 - 2.7 2.3 - 2.7 The valve operates when fuel filler cap is removed and reinstalled.
GND (sensor) B135 19 0 0 -
Fuel tank pressure control solenoid valve B84 22 ON: 1 or less
OFF: 10 - 13
ON: 1 or less
OFF: 13 - 14
-
Drain valve B84 11 ON: 1 or less
OFF: 10 - 13
ON: 1 or less
OFF: 13 -14
-
Fuel tank sensor control valve B84 23 ON: 1 or less
OFF: 10 - 13
ON: 1 or less
OFF: 13 - 14
-
Fuel level sensor B135 25 0.12 - 4.75 0.12 - 4.75 -
Fuel temperature sensor signal B135 6 2.5 - 3.8 2.5 - 3.8 Ambient temperature: 25°C (75°F)
Blow-by leak diagnosis signal B137 2 0 0 When disconnection (malfunction) = 5
Small light switch B134 17 ON: 0
OFF: 10 - 13
ON: 0
OFF: 13 - 14
-
Blower fan switch B134 9 ON: 0
OFF: 10 - 13
ON: 0
OFF: 13 -14
-
Rear defogger switch B134 3 ON: 0
OFF: 10 - 13
ON: 0
OFF: 13 - 14
-
Power steering oil pressure switch B135 24 10 - 13 ON: 0
OFF: 13 - 14
-
Front oxygen (A/F) sensor signal (+) B84 29 2.8 - 3.2 2.8 - 3.2 -
Front oxygen (A/F) sensor signal (- ) B84 19 2.4 - 2.7 2.4 - 2.7 -
Front oxygen (A/F) sensor shield B84 18 0 0 -
Vehicle Diagnostic Interface/GST communication line B134 21 Less than 1 ? ? More than 4 Less than 1 ? ? More than 4 -
Torque control 1 signal B134 19 More than 4 More than 4 -
Torque control 2 signal B134 18 More than 4 More than 4 -
Torque control cut signal B137 14 8 8 -
AT diagnosis input signal B135 20 Less than 1 ? ? More than 4 Less than 1 ? ? More than 4 Waveform
AT load signal B135 28 4.3 - 4.4 0.9 - 1.4 -
GND (sensors) B135 19 0 0 -
GND (injectors) B137 8 0 0 -
GND (ignition system) B137 18 0 0 -
GND (power supply) B137 17 0 0 -
B134 22 0 0 -
GND (control systems) B134 7 0 0 -
B134 15 0 0 -
GND (front oxygen (A/F) sensor heater 1) B84 9 0 0 -
GND (front oxygen (A/F) sensor heater 2) B84 8 0 0 -