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Old 04-10-2001, 08:23 PM
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JimF JimF is offline
'94 S500: only 793 sold!
Join Date: Mar 2001
Location: San Diego, CA
Posts: 1,924
DTC from Diag Module

If your DIAG module is the same as mine ('94), 26 blinks means: Upshift delay 1 -> 2 (124.034 only), 2 ->3 (all models).

The upshift delay switchover valve (Y3/3) operates from a control signal from the LH control unit (N3/1) and puts vacuum on the the upshift delay element (transmission).

Most likely, there's a problem with the vacuum line or the Y3/3 valve.

[Edited by JimF on 04-10-2001 at 09:07 PM]
Regards . . . . JimF
'94 S500 Cpe

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