ignition AUDI A4 1998 B5 / 1.G AFC Engine Throttle position Sensor Checking And Adjusting Workshop Manual

24-78

Checking voltage supply

- Disconnect TP sensor harness connector.

- Switch ignition ON.

If neither specified value is obtained:
If one of the specified values is not obtained, check ECM wiring as
follows: -
Switch multimeter (Fluke 83 or equivalent) to measure resistance ( )
and connect in sequence between terminals 1 (B+) and 2 (GND), then
between terminals 1 (B+) and 3 (signal). Specified value: 4.5 to 5.5 volts
- Check TP sensor resistance page 24
-77
.
- Connect VAG 1598/19 test box to ECM harness connector page 01
-
255
.

- Check Ground (GND) wire for continuity between TP sensor connector
terminal 2 and test box socket D12.

Specified value: max. 1 ohm ( )
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