Reno L4-2.0L (2006)
PROM - Programmable Read Only Memory: All Technical Service Bulletins
Engine Controls - Hard Start Condition
FORENZA
Section Title: Engine
TSB No. TS 13 02237
Division: Automotive
Category: Technical
SUBJECT:
EXTENDED CRANKING TIME OR HARD START CONDITION AFTER PERFORMING TSB ENGINE 09 10056 REPROGRAM
MODEL(S):
FORENZA, FORENZA WAGON, RENO (RQ420) A/T ONLY
YEAR: 2006~2007
CONDITION:
Some automatic transmission vehicles may continue to experience extended cranking time (greater than 2 seconds) or hard start condition after applying
the previous calibration described in TSB Engine 09 10056.
CAUSE:
Extended crank/hard start is related to a lean fuel condition, aggravated by a combination of low volatility fuel and unusually cool temperatures. Fuel
volatility (the ability of the fuel to vaporize) is an important factor for good engine startability". Fuel volatility is regulated by the U.S. Government in
order to minimize evaporative emissions. Low volatility fuel (summer fuel) is in use beginning as early as May 1 through September 15. Volatility can
also vary depending on fuel supplier blend, and is negatively influenced by the addition of Ethanol.
CORRECTION:
For some vehicles, simply purging and replacing fuel improves start up performance. For affected models that experience extended crank, or hard start,
in the temperature range between 60 F (15 C) and 32 F (0 C) while using, or is suspected of using, summer fuel, a new calibration is available. Please
reprogram the Engine Control Module (ECM) with the latest software. Refer to the General TSB 05 XXXXX "ECM (ECU) Reprogramming
Verification Procedure Using the Suzuki SDS Tool" to verify the version installed in your PC.
NOTE:
It is not necessary to perform this reprogram if the vehicle has already received the latest calibration from the latest version software and database.
REQUIRED TOOLS AND SOFTWARE:
REQUIRED TOOLS AND SOFTWARE:
