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All Other Service Bulletins for Engine Control Module: > < All Technical Service Bulletins:|289103
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Engine Control Module: All Technical Service Bulletins
Engine - No Start, Hard Start

Group:

28

Number:

91-02

Date:

March 31, 1991

Subject:

Engine - Vehicle No Start/Hard Start, Below 45~F (7~C) Ambient Temperatures

Model(s):  200/200 Quattro

MY 1989-1990 (With MC Engines)

Condition:

No signal from engine management ECU, to the cold start valve.

Production:

Production processes improved, to help assure that ECU is not damaged during production.

Service:

a) Check function of signal to cold start valve

b) If no signal, replace ECU

Caution:

When working on ECU do not disconnect ECU from vehicle wiring harness within 30 seconds of turning the ignition switch off, this may
damage the ECU.

All Other Service Bulletins for Engine Control Module: > < All Technical Service Bulletins:|289103