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Home >> Audi >> 1997 >> Cabriolet V6-2.8L (AFC) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Scan Tool Testing and Procedures >> Diagnosis With Scan Tool, Address Word 01 >> Read Measuring Block Values >> Display Group 001
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Display Group 001





1) specified value minus 0.01 V per 500 m above sea level.
2) Mass Air Flow (MAF) sensor output voltage tolerance range can only be evaluated in "Basic Setting" at idle.

Note on display field 3: The altitude display is a calculated value inside the ECM that is calculated by a comparison of the intake air mass and the throttle angle. The value is greatly influenced by the intake air temperature and the component tolerance. If there are values greater than 48, the exhaust gas recirculation system throughput diagnosis, the secondary air injection system diagnosis and the evaporative emissions system diagnosis are switched off The value 48 corresponds to an altitude of 1800 m (5904 ft.) at 25°C (77°F).









Test table display group 001

Notes on display field 1:
- The Engine Coolant Temperature (ECT) sensor is a temperature-dependent resistor. If the sensor signal is falsified by e.g. dampness in the harness connection (effect as with resistors connected in parallel), this falsification can lie in a range that is not recognized by the OTC memory.
- If a malfunction relating to the Engine Coolant Temperature (ECT) sensor is stored, a coolant temperature of 20°C (68°F) is displayed in the measuring block at engine start. 10°C (50°F) is added to this for each minute of engine operation. The maximum replacement value is 85°C (185°F).
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