Power Supply (+B Circuit), No Self-Immobilizing

Diagnostic procedure
1 Check the VSS programming
- Connect an Intelligent Saab Tester (ISAT) scan tool.
- Select "THEFT ALARM".
- Select "PROGRAMMING".
- Select "SELF-IMMOBILIZING".
- Check "TIME BEFORE ACTIVE".

Is the time displayed correct?
[YES] Continue with point 2.
[NO] Program the relevant time according to cur- rent market requirements.







2 Check the VSS control module's input
- Remove the VSS control module.
- Connect the test lamp to pins 9 and 22 of the connector.
- Carry out the following test sequence:
- Ignition switch in the ON position.
- The test lamp should not light up.
- Ignition switch in the OFF position and ignition key inserted.
The test lamp should not light up.
- Ignition switch in the OFF position and the ignition key removed.
The test lamp-should light up.

Were the test sequence results OK?
[YES] Continue with point 3.
[NO] Check and repair or replace the wiring between pin 9 of the control module and the ignition switch.

3 Final test
Start the car and check to see if the fault symptom persists.

Does the trouble persist?
[YES] Continue as described in "Before Changing the Electronic Control Module". Before Changing the Electronic Control Module
[NO] The remedial measure taken was correct or the fault is of intermittent nature.