Test Steps

1	Front wheels	block, place chocks approx. 4" in front of front wheels.
2	Tire pressure on rear wheels	check, adjust to specified pressure.
3	Trunk	check, remove heat sensitive and heavy objects.
4	Engine/drivetrain at partial load in selector lever position "S" (approx. 34 hp)	bring to operating temperature, engine oil temperature approx. 80 oC. Do not exceed 120 oC.
5	Vehicles with ASR/ETS/ABS	a) Working without Hand-Held Tester (HHT): Ignition: OFF , bridge socket 6 and 1 (ground) on data link connector (DTC readout) (X11/4). Use adaptor. ASR/ETS/ABS MIL will light while driving. With multifunction indicator the text "Slipping, ASR, Control" appears on the display. Before disconnecting, the ignition must be: OFF . b) Working with Hand-Held Tester (HHT): Ignition: OFF , Disconnect connector on ABS/ASR hydraulic unit. ASR/ETS/ABS MIL lights! With multifunction indicator the text "Slipping, ASR, Control" appears on the display. Reconnect connector after test and erase DTC memory.
6	Engine with blower	cool, direct air stream to radiator and underside of vehicle (oil pan, exhaust system, catalytic converter, tires). Maintain a distance of approx. 3 ft. between blower and vehicle.
7	Start of delivery or GI value	check (Test and Adjustment Data, section A).
8	Wide open throttle performance	check, drive at WOT only as long as required to read instruments. Compare indicated performance values with Test and Adjustment Data, section A. Observe barometric pressure, engine coolant temperature and intake air temperature for this purpose.
9	Injection quantity	check, only possible using HHT (Test and Adjustment Data, section A).
10	Intake manifold pressure	check, only possible using HHT (Test and Adjustment Data, section A).
11	Engine coolant temperature	check, only possible using HHT (Test and Adjustment Data, section A).
12	Intake air temperature	check, only possible using HHT (Test and Adjustment Data, section A).
13	Fuel rack travel	check, only possible using HHT (Test and Adjustment Data, section A).
14	Opacity	check (Test and Adjustment Data, section A).

Note: Check speedometer with signal generator only in case of complaints if maximum speed can not be obtained.

Limit test duration to the absolute minimum required to read the instruments (approx. 5 seconds for performance test; approx. 20 seconds for emission test).

General Information The local barometric reading should agree with broadcast weather reports. The measured performance value must be corrected with correction factors. There are 2 correction factors: Altitude correction factor Performance correction factor Determining performance relative to normal operating conditions: 1. Determine the local barometric pressure, altitude and intake air temperature. 2. Determine performance on the dynamometer. 3. Read the altitude correction factor in the altitude correction table according to the local altitude. 4. Local barometric pressure minus the altitude correction factor equals the barometric pressure (p) in mbar. 5. Determine the performance correction factor (KH) with the calculated barometric pressure (p) according to the present intake air temperature (t). 6. Calculate the performance relative to normal operating conditions with the performance correction formula: Performance correction formula Ne o = Ne x K H Neo = Performance relative to normal operating conditions in kW Ne = Measured performance on dynamometer in kW KH = Correction for local intake air temperature, barometric pressure and altitude.

1. Determine local barometric pressure, altitude and intake air temperature. For example: Local barometric pressure = 955 mbar Local altitude = 400 m Local intake air temperature = + 20 oC 2. Determine performance output on dynamometer = 100 kW. 3. The local altitude = 400 m, gives an altitude correction factor of 46 mbar in the altitude correction table. 4. The local barometric pressure minus the altitude correction factor equals the barometric pressure value (p): 955 mbar - 46 mbar = 909 mbar. This barometric pressure value (p) must be rounded off to 910 mbar in order to use the table. 5. The performance correction table gives for a barometric pressure (p) = 910 mbar and an intake air temperature of 20 oC, a correction factor (KH) of 1.0787 6. The performance output relative to normal operating conditions is: Neo = Ne x KH Neo = 100 kW x 1.0787 = 108 kW Note: The values for this example are marked in the correction tables. Performance output on dynamometer: Ne = 100kW Local barometric pressure: p = 955 mbar Local intake air temperature: t = + 20 oC Local altitude: 400 m above sea level Conversion factors: 1 in Hg = 33.8638 mbar 1 ft = 0.3048 m 1 hp = 0.7457 kW

Performance correction on dynamometer for diesel engines mbar correction factor

1040 1035 1030 1025 1020 1015 1010 1005 1000 995 990	0.911 0.9155 0.9200 0.9245 0.9290 0.9336 0.9382 0.9428 0.9476 0.9523 0.9571	0.9194 0.9239 0.9284 0.9329 0.9375 0.9421 0.9467 0.9514 0.9562 0.9610 0.9659	0.9277 0.9321 0.9367 0.9412 0.9458 0.9505 0.9552 0.9600 0.9648 0.9696 0.9745	0.9358 0.9403 0.9449 0.9495 0.9542 0.9589 0.9636 0.9684 0.9732 0.9781 0.9831	0.9439 0.9485 0.9531 0.9577 0.9624 0.9672 0.9719 0.9768 0.9817 0.9866 0.9916	0.9519 0.9565 0.9612 0.9659 0.9706 0.9754 0.9802 0.9851 0.9900 0.9950 1.0000	0.9599 0.9645 0.9692 0.9739 0.9787 0.9835 0.9884 0.9933 0.9983 1.0033 1.0084	0.9678 0.9724 0.9772 0.9819 0.9867 0.9916 0.9965 1.0015 1.0065 1.0115 1.0166	0.9756 0.9803 0.9851 0.9899 0.9947 0.9996 1.0046 1.0096 1.0146 1.0197 1.0249	0.9833 0.9881 0.9929 0.9977 1.0026 1.0076 1.0126 1.0176 1.0227 1.0278 1.0330	0.9910 0.9958 1.0007 1.0056 1.0105 1.0155 1.0205 1.0256 1.0307 1.0359 1.0411
985 980 975 970 965 960 955 950 945 940	0.9620 0.9669 0.9719 0.9769 0.9819 0.9870 0.9922 0.9974 1.0027 1.0080	0.9708 0.9757 0.9807 0.9858 0.9909 0.9960 1.0013 1.0065 1.0119 1.0172	0.9795 0.9845 0.9895 0.9946 0.9998 1.0050 1.0102 1.0155 1.0209 1.0263	0.9881 0.9931 0.9982 1.0033 1.0085 1.0138 1.0191 1.0245 1.0299 1.0354	0.9966 1.0017 1.0068 1.0120 1.0173 1.0226 1.0279 1.0333 1.0388 1.0443	1.0051 1.0102 1.0154 1.0206 1.0259 1.0313 1.0366 1.0421 1.0476 1.0532	1.0135 1.0186 1.0239 1.0291 1.0345 1.0399 1.0453 1.0508 1.0564 1.0620	1.0218 1.0270 1.0323 1.0376 1.0430 1.0484 1.0539 1.0594 1.0651 1.0707	1.0301 1.0353 1.0406 1.0460 1.0514 1.0569 1.0680 1.0624 1.0737 1.0794	1.0383 1.0436 1.0486 1.0543 1.0598 1.0653 1.0709 1.0765 1.0822 1.0880	1.0464 1.0517 1.0571 1.0626 1.0681 1.0736 1.0793 1.0849 1.0907 1.0965
	0	5	10	15	20	25	30	35	40	45	50

Intake air temperature t o C

mbar correction factor

935 930 925 920 915 [910] 905 900 895 890	1.0134 1.0189 1.0244 1.0300 1.0356 1.0413 1.0470 1.0528 1.0587 1.0647	1.0227 1.0282 1.0337 1.0393 1.0450 1.0508 1.0566 1.0624 1.0684 1.0744	1.0318 1.0374 1.0430 1.0487 1.0544 1.0602 1.0660 1.0720 1.0779 1.0840	1.0409 1.0465 1.0522 1.0579 1.0637 1.0695 1.0754 1.0814 1.0874 1.0935	1.0499 1.0555 1.0613 1.0670 1.0729 [1.0787] 1.0847 1.0907 1.0968 1.1030	1.0588 1.0645 1.0703 1.0761 1.0820 1.0879 1.0939 1.1000 1.1061 1.1124	1.0677 1.0734 1.0792 1.0851 1.0910 1.0970 1.1031 1.1092 1.1154 1.1217	1.0764 1.0822 1.0881 1.0940 1.1000 1.1060 1.1121 1.1183 1.1246 1.1309	1.0851 1.0910 1.0969 1.1028 1.1089 1.1150 1.1211 1.1273 1.1336 1.1400	1.0938 1.0997 1.1056 1.1116 1.1177 1.1238 1.1300 1.1363 1.1427 1.1491	1.1023 1.1083 1.1143 1.1203 1.1264 1.1326 1.1389 1.1452 1.1516 1.1581
885 880 875 870 865 860 855 850 845 840	1.0707 1.0768 1.0829 1.0892 1.0954 1.1018 1.1083 1.1148 1.1214 1.1281	1.0805 1.0855 1.0928 1.0991 1.1054 1.1119 1.1184 1.1249 1.1316 1.1383	1.0901 1.0963 1.1026 1.1089 1.1153 1.1218 1.1284 1.1350 1.1417 1.1485	1.0997 1.1060 1.1123 1.1187 1.1251 1.1317 1.1383 1.1450 1.1518 1.1586	1.1092 1.1156 1.1219 1.1283 1.1349 1.1415 1.1481 1.1549 1.1617 1.1686	1.1186 1.1250 1.1314 1.1379 1.1445 1.1512 1.1579 1.1647 1.1716 1.1786	1.1280 1.1344 1.1409 1.1474 1.1541 1.1608 1.1676 1.1744 1.1814 1.1884	1.1373 1.1437 1.1503 1.1569 1.1636 1.1703 1.1772 1.1841 1.1811 1.1982	1.1465 1.1530 1.1596 1.1662 1.1730 1.1798 1.1867 1.1937 1.2007 1.2079	1.1556 1.1621 1.1688 1.1755 1.1823 1.1892 1.1961 1.2032 1.2103 1.2175	1.1646 1.1712 1.1779 1.1847 1.1915 1.1985 1.2055 1.2126 1.2198 1.2270
	0	5	10	15	[20]	25	30	35	40	45	50

Intake air temperature t o C [ ] Calculation example, page 31/4

Performance correction on dynanometer for diesel engines

mbar correction factor

835 830 825 820 815 810 805 800 795 790 785 780	1.1348 1.1416 1.1486 1.1556 1.1627 1.1698 1.1771 1.1845 1.1920 1.1994 1.2071 1.2148	1.1452 1.1521 1.1590 1.1661 1.1733 1.1805 1.1878 1.1953 1.2028 1.2104 1.2181 1.2259	1.1554 1.1624 1.1694 1.1765 1.1838 1.1911 1.1985 1.2060 1.2135 1.2212 1.2290 1.2369	1.1656 1.1726 1.1797 1.1869 1.1942 1.2015 1.2090 1.2166 1.2242 1.2320 1.2398 1.2478	1.1756 1.1827 1.1899 1.1971 1.2045 1.2119 1.2195 1.2271 1.2348 1.2426 1.2505 1.2585	1.1856 1.1928 1.2000 1.2073 1.2147 1.2222 1.2298 1.2375 1.2453 1.2532 1.2611 1.2692	1.1955 1.2027 1.2100 1.2174 1.2249 1.2324 1.2401 1.2478 1.2557 1.2636 1.2717 1.2798	1.2054 1.2126 1.2200 1.2274 1.2349 1.2426 1.2503 1.2581 1.2660 1.2740 1.2821 1.2904	1.2151 1.2224 1.2298 1.2373 1.2449 1.2526 1.2604 1.2683 1.2762 1.2843 1.2925 1.3008	1.2248 1.2321 1.2396 1.2472 1.2548 1.2626 1.2704 1.2784 1.2864 1.2945 1.3028 1.3111	1.2344 1.2418 1.2493 1.2569 1.2647 1.2725 1.2804 1.2884 1.2956 1.3047 1.3130 1.3214
	0	5	10	15	20	25	30	35	40	45	50

Intake air temperature t o C

Altitude Correction

m	mbar	m	mbar	m	mbar	m	mbar	m	mbar
0 50 100 150 200 250	0 6 12 18 24 30	300 350 [400] 450 500 550	36 41 [46] 52 58 63	600 650 700 750 800 850	69 75 81 86 92 98	900 950 1000 1100 1200 1300	104 109 115 126 137 148	2000 2100 2200 2300 2400 2500	221 230 239 250 259 268

[ ] Calculation example, page 31/4