Passat Wagon 4Motion V6-2.8L (ATQ) (2003)
Throttle Position Sensor: Testing and Inspection
With Manufacturer's Scan Tool
Throttle Position (TP) sensor, checking
Special tools and equipment
-
VAG1526A multimeter
-
VAG1594A connector test kit
-
VAG1598/31 test box
-
VAG1551 scan tool (or VAG1552 mobile scan tool) with VAG1551/3 cable
-
Wiring diagram
Function
Both the Throffle Position (TP) sensor -G79- and the Sender -2- for accelerator pedal position - G185- are located at the accelerator pedal and
communicate the driver's intentions to the ECM completely independently of each other. Both sensors are stored in one housing.
Test sequence
-
Connect VAG1551 scan tool (VAG1552) and select the control module for engine electronics via address word 01. Ignition must be switched on
for this:
Indicated on display
Rapid data transfer
HELP
Select function XX
-
Press buttons -0- and -8- to select "Read Measuring Value Block" function 08. Press -Q- button to confirm input.
Indicated on display
Read Measuring Value Block
HELP
Input display group number XXX
-
Press buttons -0- -6- and -2- to select "Display group number 62". Press -Q- button to confirm input.
Indicated on display (1-4 = display fields)
Read Measuring Value Block 62
->
1
2
3
4
-
Check specified value for Throttle Position (TP) sensor -G79- at idle stop in display field 3
Specification: 12 - 97%
-
Check specified value for sender -2- for accelerator pedal position -G185- at idle stop in display field 4
Specification: 4 - 49%