SAAB WIS ONLINE

(645-2660) Unnecessary replacement of the EHPS control module with diagnostic trouble code C1550 37

Symptom: Diagnostic trouble code C1550 37 and no warning lamp lit.

TECHNICAL SERVICE BULLETIN
Bulletin Nbr: 645-2660
Date: ........... Januari 2007
Market: all
Unnecessary replacement of the EHPS control module with diagnostic trouble code C1550 37

This bulletin concerns the unnecessary replacement of the control module with diagnostic trouble code C1550 37 and comes into force immediately. WIS edition 2007-1 will contain this information.

Cars affected

Saab 9-3 with EHPS.

Parts required

Not affected.

Background

Fault diagnosis in WIS for diagnostic trouble code C1550 37 "CONTROL MODULE, INTERNAL FAULT" recommends control module replacement, which is wrong.

The diagnostic trouble code does not affect the EHPS system, and if the fault does not occur again within 40 driving cycles the diagnostic trouble code will be erased automatically.

Symptom description

Diagnostic trouble code C1550 37 and no warning lamp lit.



Fault reason


+30 voltage has been disconnected while the engine is running.

Low battery voltage when running the starter motor.


Warranty/Time Information