Volvo Workshop Manuals
940 L4-2.3L SOHC VIN 88 B230F (1992)
Sensors and Switches > Sensors and Switches - Powertrain Management > Sensors and Switches - Computers and Control Systems > Manifold Pressure/Vacuum Sensor > Component Information > Specifications > Page 2168
Removing Protective Sleeve
Remove connector protective sleeve and reinstall fuse #1 for testing.
^ Check connections through the holes in the connector.
Disconnect intake manifold pressure sensor hose.
Reconnect the ECU connector "loosely" to the fuel injection control unit.
Checking Voltage At Pin 7 And 11
Turn ignition ON.
Connect a voltmeter between ground and pin 11.
Reading: approx. 5 volts
If not, check power source and ground for ECU. Repair as necessary. If no fault can be found, replace and retest with new fuel injection ECU.
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