940 L4-2320cc 2.3L SOHC VIN 83 B230FD (1993)
Checking Terminal Pins
6.
Check that terminal contacts have been pushed down evenly in connector.
7.
If any connectors have been pushed down to far, poor connection may result.
Checking Battery Supply
8.
Check main power supply by connecting a voltmeter between pin 5 (brown) in ECU connector and ground.
Reading: approx. 12 volts
9.
If no voltage registers, check wire between ECU and fuse-box located behind the center console ash tray. Check fuse #1 and wiring to battery
(incl. battery terminals). Repair as necessary.
Checking Knock Sensor Wiring
10.
Check wiring by removing the connector from the knock sensor. Install a bridge wire between terminal 1 and 2.
Testing Knock Sensor
11.
Connect an ohmmeter between pin 12 (black) and 13 (green) at ECU connector.