saab Workshop Repair Guides

Saab Workshop Service and Repair Manuals

Diagnostic Tool Screen Does Not Go on With ON Button Pressed|Page 4524 > < Diagnostic Tool Screen Does Not Go on With ON Button Pressed|Page 4522
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Information Bus: Testing and Inspection
No Communication With Motronic

Quick Check

Quick Check

-

Check fuse 17 and/or fuse 28 and change if necessary.

-

Visually check to see if pins 6 and 7 on the data link connector have slipped out.

Is the function correct?

NO

-

Continue with Quick Check

YES -

See: Checking That Motronic Is Active 

Rectify the fault

After performing this procedure See: Final Check 

Checking That Motronic Is Active

Checking That Motronic Is Active

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Turn the ignition switch to the ON position.

-

The CHECK ENGINE lamp should go on when the ignition is turned ON.

Is the function correct?

NO

-

See: Checking the Motronic Control Module Power Supply 

YES -

See: Checking the Diagnostic Tool 

Checking the Diagnostic Tool

Checking The Diagnostic Tool

Diagnostic Tool Screen Does Not Go on With ON Button Pressed|Page 4524 > < Diagnostic Tool Screen Does Not Go on With ON Button Pressed|Page 4522