A8 Sedan V8-3.7L (AEW) (1997)
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Rotate CTP switch in direction shown (arrow) until reaching stop. While doing so, do not depress accelerator pedal.
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Tighten CTP switch in this position.
Checking wiring
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Connect VAG 1598/19 test box to ECM harness connector. See: Powertrain Management/Computers and Control Systems/Testing and Inspection
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Disconnect harness connector from Throttle Position (TP) sensor.
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Check wiring for continuity or short circuit:
TP sensor connector terminal
VAG 1598/19 test box socket (ECM terminal)
4 (Ground)
D11 (Ground)
6
B4
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Repair wiring to correct open or short circuit as necessary.
See Electrical Wiring Diagrams, Troubleshooting and Component Locations.
NOTE: When repairing terminals in TP sensor connector, be sure to use only gold-plated terminals.
If wiring is OK:
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Check CTP switch.
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Reconnect TP sensor harness connector.
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Connect multimeter US 1119 (Fluke 83 or equivalent) and check for continuity between terminals D11 and B4.