A6 Sedan V6-2.8L (AHA) (1998)
Throttle Valve Control Module: Component Tests and General Diagnostics
Throttle Drive and Angle Sensor For Throttle Drive, Checking
Required special tools and test equipment
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VAG 1551 or VAG 1552 Scan Tool (ST) with VAG 1551/3 adapter cable
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VAG 1598/22 test box
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Multimeter US 1119 (Fluke 83 or equivalent)
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VW 1594 connector test kit
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Wiring diagrams
NOTE. Throttle drive -G186- and angle sensor - 1- for throttle drive -G187- are located in the throttle valve control module -J338-.
Test conditions
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Throttle valve in closed throttle position; if necessary adjust accelerator pedal cable.
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Cruise control adjustment OK.
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Power supply for throttle valve control module OK.
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Engine coolant temperature at least 80 °C (176 °F)
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Automatic transmission selector lever in "P" or "N"
Checking
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Connect VAG 1551 or VAG 1552 scan tool and press buttons -0- and -1- to insert "Engine Electronics" address word 01 (with engine running at
idle).
Indicated on display
Rapid data transfer
HELP
Select function XX
-
Press buttons -0- and -8- to select "Read Measuring Value Block" function 08, and press -Q- button to confirm input.
Indicated on display
Read Measuring Value Block
HELP
display group number XXX
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Press buttons -0-, -5- and -5- to input display group number 55 (055), and press -Q- button to confirm input.
Indicated on display (1-4 = display fields)
Read Measuring Value Block 55
->
1
2
3
4
-
Compare display with specified values for idle air control (display fields 1-4):
If displayed values are OK:
-
Press -> button.
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Press buttons -0- and -6- to select "End Output" function 06, and press -Q- button to confirm input.