Passat Sedan V6-2771cc 2.8L DOHC (AHA) (1998)
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Disconnect 8-pin harness connector -1- from throttle valve control module (arrow -2-).
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Measure Throttle Position (TP) actuator -V60- resistance between terminals 1 and 2 of throttle valve control module -J338-.
Specified value: 3-200 ohms
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Check voltage supply to throttle valve control module and wiring to ECM
If no malfunction is detected:
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Replace throttle valve control module, item 16, See: Computers and Control Systems/Electronic Throttle Control Module/Service and Repair
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Carry out adaptation of throttle valve control module to ECM.
Throttle Position (TP) sensor -G69-, checking
Checking conditions
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Engine coolant temperature at least 85°C (185°F) See VAG1551 scan tool function 08, display group 004, display field 3.
Checking
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Connect VAG1551 or VAG1552 scan tool and press buttons -0- and -1- to insert "Engine Electronics" address word 01 (with ignition switched;
engine not running). See: Computers and Control Systems/Testing and Inspection
Indicated on display
Rapid data transfer
HELP
Select function XX
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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
Input display group number XXX
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Press buttons -0-, -0- and -3- to input display group number 3 (003), and press -Q- button to confirm input.
Indicated on display (1-4 = display fields)
Read Measuring Value Block 3
->
1
2
3
4
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Compare display with specified values for throttle angle, (display field 3):
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Open throttle valve slowly while monitoring degree (°) value in display field 3.
Value must increase uniformly over the entire range.