Parking Lights
1 If only a single lamp is faulty, check that this lamp's fuse and bulb are OK and that the fuse is live.
2 Connect a Intelligent Saab Tester (ISAT) scan tool and select "READ SWITCHES" from the menu and then "PARKING LIGHTS".
Read the ISAT scan tool display,
If the ISAT scan tool shows " OFF ", continue with point 3.
If the ISAT scan tool shows "ON", continue with point 4.
3 Check whether a 12 V power supply is present on pin 3 of the lights switch connector. If a 12 V power supply is present, see point 4.
If it is not, check the wiring between the output of the Maxi 2 fuse and pin 3 of the lights switch connector for continuity/shorting.
4 Connect a BOB and check whether a voltage supply is present on pin 16. Check the wiring for continuity/shorting between pin 16 of the Integrated Central Electronics (ICE) module connector and pin 6 of the lights switch connector.
If the wiring is OK, the fault is in the lights switch. Change the switch.
5 Read "LH PARKING LIGHTS" and "RH PARKING LIGHTS" to check whether they are in working order.
If any of the circuits is faulty, check the wiring for continuity/shorting by measuring the resistance between the fuses and:
- ICE module connector pin 4 (left-hand).
- ICE module connector pin 28 (right-hand).
6 Unplug the lamp connectors and use an ohmmeter to check the ground connections of the lamps as follows:
- between pin 4 of the connector and a good grounding point for the front parking lights.
- between pin 3 of the connector and a good grounding pint for the side marker lights.
- between pin 2 of the connector and a good grounding point for the rear parking lights.
The resistance should be < 1 ohm.
If the resistance is OK, go to point 7.
If the resistance is not OK, check the wiring for continuity/shorting.
7 Using a voltmeter, check the lamp's power supply as follows:
- between connector pin 3 and a good grounding point for the front parking lights.
- between connector pin 1 and a good grounding point for the side marker lights.
- between connector pin 1 for the left-hand rear parking lights and connector pin 3 for the right- hand rear parking lights and a good grounding point.
A reading of 12 V should be obtained.
8 If a different reading is obtained, check the wiring for continuity/shorting as follows:
- for the front parking lights, between the fuse and the lamp.
- for the rear parking lights, between ICE module connector pins 27 (left-hand) and 3 (right-hand).