Passat L4-1984cc 2.0L DOHC (9A) (1990)
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Connect Engine Scan Tool VAG 1551 and check Part No. of installed engine ECM.
^
must be Part No. 8AO 907 404H
^
If NOT, replace ECM with Part No. 8A0 907 404H
H. Check/Replace Engine Control Module
H. Check/replace Engine Control Module
(ECM) (Passat with automatic transmission only)
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Connect Engine Scan Tool VAG 1551 and check Part No. of installed engine ECM. Also visually check ECM for color code.
Note
Since tester printouts tend to fade, make a photocopy of the printout and attach to repair order hard copy for future reference. Identify removed Engine
Control Modules (ECM) with a completely filled out Warranty parts tag and return ECM to your Parts Department for shipment to VWoA Warranty
Parts Test Center.
I. Check/Replace Transmission Control Module (Tcm)
I.
Check/replace Transmission Control Module (TCM)