wheel AUDI A6 1999 C5 / 2.G AHA Engine Throttle Valve Control Module Checking Workshop Manual

24-133

- Press buttons -0-, -0- and -5- to input display
group number 5 (005), and press -Q- button to
confirm input. Read Measuring Value Block 5 1 2 3 4

Indicated on display (1-4 = display fields)
- Check Closed Throttle Position (CTP) switch (display field 4):

Display fields

1 2 3 4
Display group 5: Engine electronics
Display xxx RPM xx.xx ms xxx km/h Idle
Part throt
Full throt
Decel
Enrich
Indicates Engine speed
(in 40 RPM steps) Engine load Vehicle speed Operational condition
Range 0 - 6800 RPM 0.00 - 12.75 ms --- ---
Specified value 620 - 740 RPM
(all-wheel drive) 1.00 - 2.50 ms 0 km/h Throttle closed: "Idle"
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740 - 860 RPM
(front-wheel drive)
Throttle slightly open: "Part throt"

--- --- --- If display is NOT OK page 24
-134
, Continuation
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Display fields

1 2 3 4
Display group 55: Idle control
Display xxx RPM x.xx g/s x.xx g/s xxxx
Indicates Engine speed RPM
(in steps of 10 RPM) Regulating value-idle mass air
flow (idle air control) Learning value-idle
mass air flow Operating
conditions
Range 0 - 2550 RPM -2.78 to +2.85 g/s -1.67 to +3.34 g/s ---
Specified
value 620 - 740 RPM
(all-wheel drive)
or
740 - 860 RPM
(front-wheel drive) -1.39 to +1.39 g/s -1.39 to +1.39 g/s 0000
(all-wheel drive)
and/or
0100
(front-wheel
drive)

If engine speed is NOT OK page
24
-141
, Continuation
If display is NOT OK page 24
-139
, Evaluation of
display group 55
Explanation
page 24
-140


If displayed values are OK:

-
Press button.
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24-140
Explanation of 4-digit display
Explanation when display field is = 0
x
x
x
x
Display group 55
0 A/C compressor off (0 = A/C compressor off; 1 = A/C compressor on)
0 Shift lever in P or N (0 = Shift lever in P or N; 1 = Shift lever in 2/3/4/R/D)
0 Idle air control boost (0 = no idle air control boost, for all-wheel drive vehicles; 1 = idle air control boost, for
front-wheel drive vehicles)
0 always "0"
Note:
The increased idle speed (raised rpm) on vehicles with front-wheel drive is attained if there is power supplied (B+, 15er) to
terminal 10 of the engine control module.
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