I/M LOOK-UP TABLE, RELEASE 1.8.5 (October 13, 2000) The following changes have been incorporated into Release 1.8.5 of the I/M Look-Up Table: 1. Duplicate record ID numbers for three Mitsubishi models were changed. 2. Two other minor corrections were made to the data contained in the table. 3. The date on each record that was modified as a result of change #1 is October 13, 2000 (13/OCT/00). The following changes have been incorporated into Release 1.8.4 of the I/M Look-Up Table: 1. Additional updated information provided by Mitsubishi, including both new and previously existing records was incorporated. 2. Various other additions and corrections were made to the data contained in the table. 3. The date on each record that was either added or modified as a result of change #1 is September 29, 2000 (29/SEP/00). The following changes have been incorporated into Release 1.8.2 of the I/M Look-Up Table: 1. 1999 model year vehicles were added, based on manufacturer fuel economy and vehicle certification data provided by EPA, data submitted directly to Sierra by the vehicle manufacturers, and other sources. A limited number of models (particularly those manufactured by small-volume manufacturers) may be missing from this version of the table. Users are encouraged to contact Sierra or EPA directly if they identify missing models. 2. For the 1999 models included in the table, dynamometer loadings and testability parameters have been included. Stant gas cap adapter information was also added. 3. 1999 model year-specific default values have been included at the beginning of the records for this model year. 4. Data regarding alternative test pressures for use in conducting the fuel inlet vehicle evaporative control system integrity (pressure) test that were provided in previous versions of the table have been deleted due to (1) concerns that some of the test pressures were sufficiently high to create the potential for damaging evap systems; (2) the infeasibility of identifying suitable test pressures for 1996-1999 model year vehicles due to the phase-in of enhanced evap vehicles into the in-use fleet; and (3) the fact that no programs have been using the alternative test pressures. It is recommended that anyone wishing to conduct vehicle pressure testing follow EPA guidance and use the standard test pressure specified contained therein. 5. Information provided by Virginia DEQ was used to investigate differences between test data recorded in their I/M program and information contained in the table. Based on the results of this review, miscellaneous changes were made related to transmission type, engine displacement, and division and model names. 6. Updated information provided by Honda, Mitsubishi, Subaru, Isuzu, and Land Rover regarding previously existing records was incorporated. 7. An extensive review was performed of existing records in the table. This resulted in corrections to (a) Track Road Load Horse Power (TRLHP) settings for a few 1994-1995 models; (b) drive layout code entries for a number of 1978-1998 models (most related to four wheel drive options); and (c) gas cap entries for some 1990-1991 Hondas. In addition, it was noted that a number of 1997-1998 models included in the table had exceptionally high test weights and TRLHP. These models appear to be heavy duty vehicles and should not be included in the table (which is supposed to contain information on only passenger cars and light-duty trucks). They were therefore deleted. 8. The date on each record that was either added or modified as a result of changes #1-7 above is September 20, 2000 (20/SEP/00). The following changes have been incorporated into Release 1.7.2 of the I/M Look-Up Table: 1. 1998 model year vehicles, based on manufacturer fuel economy and vehicle certification data, data submitted by the vehicle manufacturers, and other sources. A limited number of models (particularly those manufactured by small-volume manufacturers) may be missing from this version of the Lookup Table. Users are encouraged to contact Sierra or EPA directly if they identify missing models. 2. For the 1998 models included in the table, dynamometer loadings and testability parameters have been included. Stant gas cap adapter information was also added. Limited data provided by certain manufacturers regarding the enhanced evaporative test parameters were also added. 3. 1998 model year-specific default values have been included at the beginning of the records for this model year. 4. Fields 19 and 20 have been respectively redefined as VINPLC and VINCHAR. (These fields were reserved in the previous version of the Lookup Table.) These fields are populated for 1981 and later makes of light-duty trucks (LDTs) that include models both under and over 6000 lbs GVWR. Certain pre-1981 records are also populated, if available VIN decoding information indicates that 1981+ VIN standardization rules also apply to these vehicles. (Also see following change.) The data included in the fields are intended to provide information that will allow users to determine whether a particular LDT is subject to 0-6000 or >6000-lb tailpipe standards. Data included in the the fields are as follows: a. VINPLC indicates the location of the VIN digit that identifies the GVWR range of the vehicle. b. VINCHAR includes all VIN characters that represent LDTs with GVWRs of less than or equal to 6000 lbs. For example, GVWR range is indicated by the fourth VIN digit on 1994-95 Ford LDTs, based on the following codes: • A = Under 3000 lbs • G = 8001 - 8500 lbs • B = 3001 - 4000 lbs • H = 8501 - 9000 lbs • C = 4001 - 5000 lbs • J = 9001 - 10000 lbs • D = 5001 - 6000 lbs • 3 = 10001 - 14000 lbs • E = 6001 - 7000 lbs • 4 = 14001 - 16000 lbs • F = 7001 - 8000 lbs For this example, VINPLC would be populated with a "4" and and VINCHAR would contain the following entry: "ABCD." Users can thus use this information and the VIN entry to determine whether a particular 1994-95 Ford LDT should be subject to 0-6000 or >6000-lb tailpipe standards. 5. Some 1983-89 Subaru station wagons equipped with a 1.8L engine were certified as LDTs while others were certified as passenger cars. The following information was entered in the records for these vehicles: a. SALES CLASS = E (for either) According to the manufacturer, if the 7th digit of the ENGINE FAMILY NUMBER for one of these vehicles is a "T", the vehicle is subject to 0-6000 lb LDT tailpipe standards. If the 7th digit is a "V", the vehicle is subject to passenger car standards. The engine family number can typically be found on the underhood label. Users can contact the manufacturer directly for guidance on determining the applicable sales class for vehicles on which the underhood label cannot be read. An additional possible entry of "E" was added for Field 15 (Sales Class) to be consistent with this change. 6. Corrections have been made to the Sales Class field in the records for Chevrolet El Caminos, GMC Caballeros, and Ford Rancheros to properly indicate that these vehicles were certified as passenger cars rather than LDTs. 7. Corrections to some previously existing records and additional 1991-92 records have been entered for Land Rover models based on information provided by the manufacturer. 8. A new fuel type code of "2" for natural gas has been added as a possible entry in Field 11 (Fuel Type). 9. A new canister location of "FT" (for on the fuel tank) has been added as a possible entry in Field 14 (Location of Canisters). This has been included to allow information provided by DaimlerChrysler on canister location for its 1998 models to be properly incorporated into the table. The canister is located on the fuel tank for some 1998 Plymouth and Dodge models. 10. The date on each record that was either added or modified as a result of changes #1-9 above is August 24, 1999 (24/AUG/99). The following changes have been incorporated into Release 1.6.1 of the I/M Look-Up Table: 1. 1997 model year vehicles, based on manufacturer fuel economy data, data submitted by General Motors and Chrysler, and other sources. A limited number of models (particularly those manufactured by small-volume manufacturers) may be missing from this version of the Lookup Table. Users are encouraged to contact Sierra or EPA directly if they identify missing models. 2. For the 1997 models included in the table, dynamometer loadings and testability parameters have been included. Stant gas cap adapter information was also added. No data are available regarding the enhanced evaporative test parameters. 3. The 1997 data are the first to incorporate the changes in certification test weights specified in the Code of Federal Regulations for heavy light-duty trucks (LDTs). Heavy LDTs are those with a gross vehicle weight rating (GVWR) of 6,001 - 8,500 lbs. Test weights for model year 1994 and later heavy LDTs certified to Tier 1 standards are to be based on adjusted loaded vehicle weight (ALVW). ALVW is defined as the average of curb weight plus gross vehicle weight rating (i.e., [curb weight + GVWR]/2). EPA has indicated ALVW should be used for 1996 and newer heavy LDTs (which are all certified to Tier 1 standards). The 1997 data contain a number of LDTs in which ALVW was used to set ETW, resulting in values of up to as much as 8,000 lbs. To test all of the 1997 models included in the table, IM240 programs will either need to have dynos that are capable of handling inertia weight settings of up to as much as 8,500 lbs or simply underload the vehicles relative to how they were initially certified. 4. The pevious set of default values included at the top of the lookup table (prior to 1973 model-year vehicles) have been replaced with new model-year-specific defaults. 5. All power fraction fields (Fields 19-21, 23-25, and 27-29) and the upper fuel economy field (Field 54) have been zeroed out. 6. Inconsistencies in a limited number of records for previous years were identified and corrected. 7. The date on each vehicle record has been modified to September 10, 1998 (10/SEP/98). The following changes have been incorporated into Release 1.5 of the I/M Look-Up Table: 1. Based on comments received from GM, additional GM truck and passenger car records were added. 2. General corrections were made to existing records based on comments received from the California Bureau of Automotive Repair (BAR) and the Georgia Environmental Protection Division. 3. The previously-existing 1992 through 1993 Ford records were replaced with 267 records prepared by Ford. The new records reflect changes in naming conventions (particularly for trucks), as well as revised vehicle weights and horsepower settings. Specific changes are as follows: a. Additional 1992-1993 model entries have been included to more precisely identify the vehicle being tested. For example, possible light-truck entries have been expanded to include regular cab/long bed, regular cab/short bed, super cab/long bed, and super cab/short bed. Separate entries have also been added for the convertible version of the Mustang, and for 2 and 4-door versions of the Explorer. b. Separate entries with different inertia weights and horsepower settings have been added for automatic and manual transmission versions of some models. Ford has indicated that sufficient information is available on the vehicle door frame to correctly identify which model is being tested (e.g., an F150 with a regular cab and long bed). Users of the look-up table may wish to configure their look-up logic to default to the lightest weight option in cases where such specific information is unavailable. For example, a 1992 F150 regular cab/long bed pickup with a 5.0L 8-cylinder engine and an manual transmission has an ETW of 4500 lbs, while the short bed version has an ETW of 4250 lbs. If the inspector cannot determine if a vehicle is a long or short-bed version, the look-up logic should default to the short-bed record, since it has a lighter ETW. 4. The date on each vehicle record has been modified to September 30, 1997 (30/SEP/97). The following changes have been incorporated into Release 1.4.2 of the I/M Look-Up Table: 1. Some of the vehicle I.D. numbers used in version 1.3 of the I/M Lookup Table were inadvertently changed in version 1.4.1. This presents a problem for I/M contractors or states who may want to track the vehicles tested from year to year based on these I.D. numbers. The I.D. numbers in question were re-assigned to the same vehicles they were associated with in Version 1.3. 2. Duplicate records (based on criteria contained in the first eight fields in the Look-Up Table), which were inadvertently created when vehicle naming conventions were modified in Version 1.3, were deleted. 3. The date on each vehicle record has been modified to October 23, 1996 (23/OCT/96). Previous changes incorporated into release 1.4.1, September 30, 1996, of the IM240 Look-Up Table: The following changes have been incorporated into Release 1.4.1 of the I/M Look-Up Table: 1. The previously-existing 1994 through 1996 Ford records were replaced with 365 records prepared by Ford. The new records reflect changes in naming conventions (particularly for trucks), as well as revised vehicle weights and horsepower settings. Specific changes are as follows: a. Additional 1994-1996 model entries have been included to more precisely identify the vehicle being tested. For example, possible light-truck entries have been expanded to include regular cab/long bed, regular cab/short bed, super cab/long bed, and super cab/short bed. Separate entries have also been added for the convertible version of the Mustang, and for 2 and 4-door versions of the Explorer. b. Separate entries with different inertia weights and horsepower settings have been added for automatic and manual transmission versions of some models. Ford has indicated that sufficient information is available on the vehicle door frame to correctly identify which model is being tested (e.g., an F150 with a regular cab and long bed). Users of the look-up table may wish to configure their look-up logic to default to the lightest weight option in cases where such specific information is unavailable. For example, a 1994 F150 regular cab/long bed pickup with a 4.9L 6-cylinder engine and an automatic transmission has an ETW of 4750 lbs, while the short bed version has an ETW of 4500 lbs. If the inspector cannot determine if a vehicle is a long or short-bed version, the look-up logic should default to the short-bed record, since it has a lighter ETW. 2. Forty new records were added to the Look-Up Table in response to comments received from Gordon-Darby, an I/M contractor that is using the Table in its IM240 test facilities in Phoenix. The new records reflect the previous absence of an optional engine size rather than a missing model name. 3. The date on each vehicle record has been modified to September 30, 1996 (30/SEP/96). Previous changes incorporated into release 1.4, August 15, 1996, of the IM240 Look-Up Table are as follows: 1. Addition of traction control (TC, TCS), anti-lock braking (ABS, ABSS), and four-wheel drive (DRLCD, FWDS) data on Mazda, Nissan, and some Mitsubishi records. 2. Addition of complete 1995 and 1996 model year records based on EPA certification data. 3. The sales class field (SACL) has been modified to include only two possible entries; V (for vehicle) or T (for truck). 4. The data contained in the OBD class field (OBDC) has been deleted from the look-up table. The space in the data record formerly occupied by the OBDC field has been renamed RESERVED, and all OBDC data has been replaced with blanks. 5. A number of "clean-up" revisions were made based on a comparison of vehicle models and data contained in the Look-Up Table to independent data sources (i.e., the Kelly Blue Book, the Automotive News Market Data Book, the Standard Catalog of Imported Cars, and the Standard Catalog of American Light-Duty Trucks). These included: a. The addition of several hundred models previously missing from the table. b. A change in the naming convention for LDTs. They are now shown with both the correct letter/number designation and name (e.g., S10 BLAZER). c. The modification of a number of other model names to be consistent with the naming convention shown in the Kelly Blue Book and other independent data sources. d. A change in the naming convention for some Mazda and Volvo vehicles. The Mazda B-2000, B-2200, B-3000, and B-4000 model names are now listed as "B-SERIES." Likewise, the Volvo 142, 144, and 145 models are now listed as "140-SERIES," and the Volvo 242, 244, 262 and 245 models are now listed as "240-SERIES" vehicles. e. Equivalent Test Weights (ETW) and/or Inertia Weight Class (IWC) which differed significantly from the independent sources noted above were revised. Track Road-Load Horsepower (TRLHP), Average Drive Axle Weight (DAXWT) and all ten ASM dynamometer settings were updated based on the revised weights. f. A limited number of records were eliminated after it was determined that they represented non-existent vehicles (e.g., vehicles which were certified but never produced). 6. To facilitate gas cap pressure testing, a one-character field was added for gascap type (field 71). The field entries identify the fuel cap testing adapter which should be used. A description of the added field is as follows: Entry Description Stant Adapter Number A BLUE B YELLOW C RED E GREEN F BLACK G GRAY H THREADED Z VARIES U UNTESTABLE N unknown or no adapter required 7. The date on each vehicle record has been modified to August 15, 1996 (15/AUG/96). 8. Records for model years 1968 through 1972 were eliminated from the table due to concerns regarding the accuracy and representativeness of the available data. 9. In previous versions, the lookup table was separated into three individual files, each approximately one megabyte in size. Due to the increased number of records in this release, the table has been divided into four individual files with the following model-year groupings: Filename Model Year Grouping 14LKUP73.DAT 1973 through 1978 14LKUP79.DAT 1979 through 1984 14LKUP85.DAT 1985 through 1990 14LKUP91.DAT 1991 through 1996 Previous changes incorporated into release 1.3.1, October 23, 1995, of the IM240 Look-Up Table: 1. Abbreviated division and manufacturer names were replaced with full names where space permitted. Corrections to spelling and previously specified upper/lower case conventions in these same fields were also implemented. 2. For some 1979 model year records, Field 40 (average drive axle weight) was recalculated as half of the equivalent test weight for those records with a zero entry, a missing entry, or an entry that differed from the total equivalent test weight by less than 200 pounds. Tire/roll interface losses (fields 22 and 26), and ASM test parameters (fields 27 through 39) were then recalculated using the updated values. 3. For pre-1979 model year records showing a zero or missing drive axle weight entry, that field was recalculated as half the equivalent test weight and the following fields were replaced with EPA defaults: Field Name TRLHP Track Road-Load Horsepower (50 mph) GTRL8 Tire/Roll Interface Losses on 8.625" Roll at 50 mph GTRL20 Tire/Roll Interface Losses on 20.0" Roll at 50 mph HP50158 ASM5015 Horsepower for 8.625" Roll HP25258 ASM2525 Horsepower for 8.625" Roll HP501520 ASM5015 Horsepower for 20.0" Roll HP252520 ASM2525 Horsepower for 20.0" Roll The remaining ASM test parameters (fields 30, 31, and 36-39) were then re-calculated using the updated values. Previous changes incorporated into release 1.3, September 30, 1995, of the IM240 Look-Up Table: 1. The pressure test-related fields have been modified and updated to incorporate additional information related to vehicles that have evaporative control system check valves or "burp" valves that may cause a false pass, false fail, or otherwise prevent testing. Pressure test minimum and maximum pressures (provided by vehicle manufacturers) for the inlet (e.g., ESP) pressure test have been listed for some vehicles. In some cases, the maximum pressure is the maximum pressure the system can be subjected to, while in other cases it reflects the manufacturers' suggested maximum. The minimum pressure reflects the minimum needed to overcome a burp valve or the minimum recommended by the manufacturer. Fields have been added for the minimum and maximum pressures for the EPA pressure test, but those have been left blank. At the present time, continued use of EPA's recommended test pressures is appropriate. Vehicles that cannot be tested with the EPA procedure (because of the presence of a check valve preventing pressurization from the canister) were labeled 'ALT' in the pressure test status field and 'VLV' in the pressure test comment field. For certain Chrysler vehicles, this condition is applicable only to carbureted vehicles. Those are labeled 'C_A' in the EPA pressure test status field. The updated pressure test record format is as follows: Field Name Entry Descriptions 56 EPA Pressure Test Status NOT,LOW,MED,HIG,UNK,ALT,C_A 57 EPA PT Comments VLV,CLM,INA,PRT,UNK 58 EPA PT Min. Pressure Inches of water (nn.n) 59 EPA PT Max. Pressure Inches of water (nn.n) 60 Inlet (e.g., ESP) Pressure NOT,LOW,MED,HIG,UNK Test Status 61 Inlet PT Comments NYL,INA,PRT,B_P,UNK 62 Inlet PT Min. Pressure Inches of water (nn.n) 63 Inlet PT Max. Pressure Inches of water (nn.n) The abbreviations used in the entry descriptions are as follows: NOT = Not Testable (<5% of vehicles found testable). LOW = Low Testability (5%-30% found testable). MED = Medium Testability (30%-70% found testable). HIG = High Testability (>70% found testable). UNK = Unknown Testability. ALT = Vehicle cannot be tested with the EPA pressure test; the alternative (i.e., inlet) procedure must be used. C_A = Carbureted vehicles cannot be tested with the EPA pressure test; the alternative (i.e., inlet) procedure must be used. Fuel-injected vehicles can be tested using either procedure. VLV = Any valve that could cause a false pass or false fail, or otherwise prevent testing. CLM = One-use clamp that cannot be removed without damaging or destroying it. INA = Canister or hose connection is inaccessible. PRT = Specially designed evaporative system access port. UNK = Reason for untestability is unknown. NYL = An evaporative hose (e.g., a nylon hose) that cannot be squeezed. B_P = "Burp" valve that requires higher pressure in order to fully pressurize the system and/or may result in a false failure during the pressure relief portion of the test. Appropriate test pressures have been included where available. Please note that the testability ranges corresponding to the LOW, MED, and HIG entries have been modified from those contained in Gene Tierney's October 28, 1994, memorandum to the Look-Up Table Subcommittee. PT Comments refer to why the vehicle was found to be untestable. An UNK entry is used in cases where the problem has not been determined. 2. Pressure test status entries for both the EPA test and the Inlet test were based on data collected in the Louisville, Kentucky I/M program. Data from 1993 were used to determine the test status for the EPA test procedure, while data from 1995 were used to determine test status for the Inlet procedure. These entries cover 1984-1991 makes and models for which 10 or more test records existed in the Louisville data. For some makes and models, the entries also include 1992 and 1993 model years. 3. Fields 60 and 61 in Version 1.2 of the look-up table, related to a third pressure test, were deleted. 4. A field was added for EPA purge test comments (field 65). 5. Fields were added for the tracer gas (i.e., ESP) purge test to include tracer purge test status, tracer purge test comments, and minimum and maximum test pressures. (Fields 66 to 69.) Vehicles having a "burp" valve that may impact tracer gas flow to the canister were labeled 'BRP' in the tracer purge test comment field. Because of a lack of data on this test, the status field currently contains 'UNK' and no pressure data have been entered. A description of the added fields is as follows: Field Name Entry Descriptions 66 Tracer Gas (e.g., ESP) Purge NOT,LOW,MED,HIG,UNK Test Status 67 Tracer Purge Test Comments BRP,UNK 68 Tracer Purge Test Min. Pressure Inches of water (nn.n) 69 Tracer Purge Test Max. Pressure Inches of water (nn.n) 6. Additional canister location data were entered for high-volume 1981-1994 makes and models. 7. A number of "clean-up" revisions were made based on comments from manufacturers and I/M contractors. These include: a. Missing number of cylinders data added to 218 records (NCYL). b. Renumbering of 52 duplicate vehicle ID numbers (VCID). c. Correction of vehicle public name (DODGE had been misspelled as DODOGE) on 5 records. d. Correction of multiple data fields in 8 Mecedes-Benz records. e. Addition/correction of traction control (TC, TCS), anti-lock braking (ABS, ABSS), and four-wheel drive (DRLCD, FWDS) data on Toyota records. f. Addition/correction of traction control data (TC, TCS) to 1993 and later model year Chrysler records. 8. The date on each vehicle record has been modified to September 30, 1995 (30/SEP/95). Previous changes incorporated into release 1.2, June 30, 1995, of the IM240 Look-Up Table: 1. To aid in proper field identification, comma-separated headings for each field have been added as the first line in each data file. For reference, the complete name of each field corresponding to each heading abbreviation are listed in Table 3 of the look-up table report, which is also contained on the look-up table transmittal diskette. 2. Ten separate ASM-related fields (#30-39) have been added to the look-up table. These include values for horsepower and generic tire/roll interface loss (GTRL) settings for both ASM5015 and ASM2525, on both 8.625" and 20.0" dynamometer rolls. Total ASM5015 and ASM2525 horsepowers are also included, but not needed to set test lane dynamometers. For reference, the equations used to compute these values are included in the look-up table report. 3. The default IM240 dynamometer loadings, test weights, and tire losses have been changed. The defaults are listed at the beginning of the data records for model year 1968. They can be identified by a "DF" entry in the model year field. In addition, "DEFAULT" has been entered in the manufacturer name field for all default records. The new defaults are based on both body style and number of cylinders, instead of just the number of cylinders. Since there are a greater number of default values, the vehicle category identification numbers for the default records have been renumbered from those used in Version 1.1 of the IM240 look-up table. All other identification numbers for records included in Version 1.1 have been held constant, with new records added to Version 1.2 receiving a new identification number. 4. ASM default values, also based on body style and number of cylinders, have been added. The ASM defaults used in Version 1.2 are those included by EPA in "ASM2 Procedures and Equipment Specifications, Ver 1.5," dated July 6, 1995. 5. The track road load horse power (TRLHP) for some 1968 to 1972 model year vehicles have been corrected. The previous values were for road load horse power (RLHP), to which the generic tire roll losses (GTRL8) for 8.625" diameter rollers have been added for the TRLHP. 6. Comments received from some of the vehicle manufacturers (Subaru, Ford, Honda, Volkswagen, Audi and Mercedes) have been incorporated into the table, resulting in modifications to some vehicle records, as well as the addition of new records. 7. Ford identified several models from model years 1988 to 1995 that require an alternate evaporative system pressure test. The pressurization must be done from the fuel filler neck rather than the hose connected to the vapor storage canister. Field 46, the EPA Pressure Test Status, has the letters, "ALT", and field 47, the EPA Pressure Test Comments, has the letters, "REV", to identify these vehicles. 8. Volkswagen/Audi provided data about OBD class, which varies based on whether the vehicle was certified to California or Federal standards. To incorporate this information into the look-up table, separate California and Federally-certified records have been added for some VW and Audi models. 9. Additional data on ABS, traction control and 4-wheel drive status were received from Tier One (a market research firm specializing in automotive electronics) and the Colorado Department of Public Health and Environment. These data were added, where appropriate, to the look-up table. 10. Model Year has been changed from a numeric to an alphanumeric data field to allow an entry of "DF" in that field for all default records. 11. The date on each vehicle record has been modified to June 30, 1995 (30/JUN/95). Previous changes incorporated into release 1.1, December 15, 1994, of the IM240 Look-Up Table: 1. Field #43 has been added to identify vehicles that cannot be tested on a 2-wheel drive dynamometer; possible entries are: a. "N" means the vehicle is equipped with either full-time 4-wheel drive or a traction control system, and therefore cannot be tested on a 2-wheel drive dynamometer. Traction control systems that the manufacturers have indicated can be manually deactivated are considered testable. b. "M" means that full-time 4-wheel drive or traction control is an option on the vehicle; the inspector must check the vehicle to determine if it is equipped with the option. c. A blank field means that no data are available to indicate that the vehicle cannot be tested on a 2-wheel drive dynamometer. 2. The pressure test-related fields have been modified, as described in Gene Tierney's memorandum of October 28, 1994, to the Look-Up Table Subcommittee. The format of these fields are as follows: Field Name Entry Descriptions 46 EPA Pressure Test Status NOT,LOW,MED,HIG,UNK 47 EPA PT Comments VLV,CLM,INA,PRT,UNK 48 ESP Pressure Test Status NOT,LOW,MED,HIG,UNK 49 ESP PT Comments NYL,INA,BRP,UNK 50 Alternative Pressure (As needed) Test Status 51 Alternative PT Comments (As needed) The abbreviations used in the entry descriptions are as follows: NOT = Not Testable (<5% of vehicles found testable). LOW = Low Testability (5%-30% found testable). MED = Medium Testability (30%-70% found testable). HIG = High Testability (>70% found testable). UNK = Unknown Testability. VLV = Any valve that could cause a false pass or false fail, or otherwise prevent testing. CLM = One-use clamp that cannot be removed without damaging or destroying it. INA = Canister or hose connection is inaccessible. PRT = Specially designed evaporative system access port. UNK = Reason for untestability is unknown. NYL = An evaporative hose (e.g., a nylon hose) that cannot be squeezed. BRP = Valve that requires higher pressure in order to fully pressurize the system. Please note that the testability ranges corresponding to the LOW, MED, and HIG entries have been modified from those contained in the October 28, 1994, memorandum. PT Comments refer to why the vehicle was found to be untestable. An UNK entry is used in cases where the problem could not be determined. 3. Pressure test status entries, based on data collected in the Louisville, Kentucky, I/M program, have been incorporated into the table. These entries cover all 1984-1991 makes and models for which 10 or more test records existed in the Louisville data. Canister location data were also entered for most high-volume 1981-1994 makes and models. 4. Comments received from some of the vehicle manufacturers (Chrysler, Toyota, Nissan, Saab, and Land Rover) have been incorporated into the table, resulting in modifications to some vehicle records, as well as the addition of new records. 5. One comment received from Chrysler identified potential pressure testability problems with certain older vehicles due to the presence of a Vapor Control Tank Vapor Valve (VCOTVV). The affected vehicles are certain 1985-1988 passenger cars and trucks with carbureted 4 and 6-cylinder engines. The VCOTVV is an emissions control device designed to control fuel tank vapor flow. It operates as a one-way "burp" valve. The valve prevents flow from the canister to the fuel tank. Vapor flow from the fuel tank to the canister is restricted to conditions when either the fuel tank pressure reaches 24+/-2" H20 or when there is a vacuum signal from the engine (e.g. engine running). According to Chrysler, properly operating vehicles equipped with a VCOTVV will pass the pressure portion of the evaporative system integrity test, but fail the subsequent pressure relief portion (for both the EPA and ESP test procedures). Chrysler has therefore suggested that these vehicles be identified by locating the VCOTVV on the underhood hose routing label, and waived from the pressure test. Explicitly identifying the carbureted versions of these vehicles in the look-up table would require the identification of the type of fuel delivery system (i.e., carburetor or fuel injection) on the vehicle. Since these data are not included in the table, it is impossible to flag only the carbureted versions of the affected vehicles as being untestable. An entry of VLV (for a valve that could prevent testing) has been included in the EPA PT Comment field (Field #47) for the affected Chrysler vehicles. These are the only vehicles for which any pressure test comments have been entered at this time. Users may also wish to use entries of low or medium testability in Field #46 as an indicator of potentially similar issues with other vehicles; i.e., those which are sold with multiple engine or evaporative families, of which only a fraction have testability problems. For example, an entry of low or medium testability could be used to prompt lane inspectors to determine a level of detail (e.g., carburetion versus fuel injection) not included in the look-up table, but which affects the testability status. It is also cautioned that some vehicles with high testability status may have similar problems. Some of the Chrysler vehicles have high testability entries (based on the Louisville data), probably because the carbureted fraction of those vehicles for a particular model year is very low. 6. Based on further research by Sierra, as well as comments received from Automotive Diagnostics, corrections have been incorporated into the following three record fields: a. drive layout code; b. division names; and c. engine sizes. 7. Data records have been added for many 1968-1972 models. These records include inertia weight class, track road load horsepower (TRLHP), and fuel tank size, based on vehicle data provided by Automotive Testing Laboratories or published in Motor Trends magazine. 8. ABS and traction control data, obtained from Tier One (an automotive electronics market research and consulting firm), have been added for all 1988 and later North American vehicles. 9. The following have been added as possible entries to the sales class field: a. "EV" means a light-duty vehicle that may have been certified as either a California or a Federal vehicle; and b. "ET" means a light-duty truck that may have been certified as either a California or a Federal truck. These entries are used in cases where two or more engine family records, some of which were certified by EPA and some by California, are merged to form a single record in the look-up table. 10. The record identification numbers in Field #10 have been reassigned to different vehicle records, due to the addition of a significant number of records to the look-up table. Each number is now permanently assigned to a particular record in the table, and will not be reassigned in future releases. The approach used in assembling the table was to include all models and and engines contained in the original certification data, unless otherwise instructed by a particular manufacturer. As a result, the table contains certain models or engines that were certified but never sold in either California or the rest of the United States. It was conservatively decided to keep these vehicles in the database, to maximize the potential coverage of the table.