Check TCM Signal
Lift-up the vehicle and support it with rigid racks.
Drive the vehicle faster than 10 km/h (6 MPH).
WARNING:
Be careful not to get caught in the running wheels.
Measure the voltage between TCM connector and chassis ground.
Connector & terminal
Saab 9-2X 2.5i Linear:
(B55) No. 13 (+) - Chassis ground (- ):
Saab 9-2X 2.0T Aero:
(B56) No. 17 (+) - Chassis ground (- ):
Is the voltage less than 1 V ?? more than 5 V?
YES. Go to CHECK POWER SUPPLY FOR COMBINATION METER (A)
NO
Check the TCM.