Remote Control Unit
Fault symptom
The remote control does not work.
Diagnostic procedure
1 Check the operation of the remote control
- The driver's door should be closed.
- Connect an Intelligent Saab Tester (ISAT) scan tool.
- Select "READ VALUES".
- Select "REMOTE CONTROL".
- Press the left-hand/right-hand button, observing the ISAT scan tool's display at the same time.
The ISAT scan tool should display "LH BUTTON" or "RH BUTTON" as appropriate, and "NO BUTTON" in the normal position.
Does it show the correct reading?
[YES] Continue with point 5.
[NO] Continue with point 2.
2 Try again using a new remote control unit.
- Program the remote control.
- Repeat the ISAT scan tool commands as in point 1.
Does the remote control work?
[YES] Continue with point 3.
[NO] Continue with point 4.
3 Check the old remote control unit
- Change the batteries.
- Try the remote control to see whether it works.
- Repeat the ISAT scan tool commands as in point 1.
Does the remote control work?
[YES] The remedial measure taken was correct or the fault is of intermittent nature.
[NO] Change the remote control.
4 Check the aerial cable
Check the wiring harness for continuity between:
- connector H2-87, pin 1, and the alarm control module, pin 1.
- Connector H2-87, pin 2, and the alarm control module, pin 14.
The resistance should be < 1 ohm.
Is the resistance OK?
[YES] Proceed to point 6.
[NO] Repair or replace the wiring harness.
5 Check the driver's door switch
- Select "PICTOGRAM SWITCH".
- Open and close the driver's door.
The ISAT scan tool display should read "OPEN" and "CLOSED" as appropriate.
Does it display the correct readings?
[YES] Proceed to point 6.
[NO] Proceed to "Fault diagnosis, door indication, driver's door".
6 Final test
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.