P1625 code in maruti Ritz deasel - Maruti Cars & Trucks

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code p 1625 refers to CAN databus, TCM--incorrect signal===causes --TCM trouble code/s stored---TCM incorrectly coded---wiring---matching resistor in ECM
I don't have a listing for code p 1749 but codes 1748 and 1750 are concerned with TCM defective and voltage supply low
so after you check the wiring and connections form the transmission you have 2 options
use a known good ECM to replace yours ( will eliminate any ECM faults)
and/or replace the TCM module on the transmission

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Code 1625 is for a problem with the radiator fan relay.
The relay could be faulty, or the radiator fan may not be functional.
The components and circuits would need to be checked out.

On this website you find fuse box diagram and description for Maruti Suzuki alto

http://www.autogenius.info/en/category/maruti-suzuki/alto

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www.tirerack.com

P1625 means that the engine computer has lost communication with the antilock brake and/or traction control computer for at least 3 seconds. How expensive this is depends on why it has lost communication, It could be something as simple as a loose connection at a wiring connector or a broken or shorted wire in the PCI bus circuit inside the wiring harness. (Which may require considerable diagnostic time to find) or it could be an internally failed ABS module.

Recommendation:
If you are NOT experiencing ANY of the symptoms below, I would simply clear the code and move on.... It is an intermittent fault that you will most likely not find very easily. If you ARE experiencing ONE OR MORE of these symptoms, then the problem needs to be diagnosed by checking the ABS module's ability to communicate with a scanner while testing the PCI Bus circuits.

Other possible symptoms of Diagnostic Trouble Code (DTC) P1625
• Speedometer malfunctioning
• Traction Control malfunctioning
• Antilock Brake System malfunctioning or ABS light on
• Cruise Control malfunctioning

Not exactly sure what you are asking, but the code P1625 on the Cadillac Catera relates to the following issue:

Code P1625 - B+ Supply To VCRM Fan Circuit Malfunction.

Hope that helps!

you can get brighter and better bulbs for it without more watts silver star brand or the brite blue ones. the boxes the bulbs come in tell you how far ahead and to the side they shine. some of the good bulbs are like 30 to 49 dollars a piece. i put brighter bulbs in my jeep and they make a big difference. hope this helps. if you have questions ask your parts man at the counter which ones would be the best for you.