A6 Sedan V6-3.2L (BKH) (2007)
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Throttle Position Sensor: Customer Interest
Engine Controls - MIL ON/Throttle Valve DTC's In ECM
MIL on (DTCs for throttle valve in ECM)
97 08 05 2018260/2 September 4, 2008. Supersedes Technical Service Bulletin Group 97 number 08-04 dated August 12, 2008 so title conforms to
naming conventions.
Condition
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MIL on.
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A number of incident memory entries with regard to the throttle valve are stored in the ECM. In most cases, the entries are sporadic. The most
frequent incident memory entries are:
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P1545 (throttle control malfunction).
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P0121 (throttle potentiometer - G69 implausible signal).
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P0123 (throttle potentiometer - G69 signal too big).
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P0221 (angle transmitter 2 for throttle actuator G188 implausible signal).
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P0222 (angle transmitter 2 for throttle actuator G188 signal too small).
Technical Background
Contact resistance in the ECM wiring - throttle valve.
Production Solution
Optimized wiring and contacts.
Service
Wiring Harness and Connector Repairs, General Information
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Observe general notes for repairs on the vehicle electrical system chapter of the repair manual. (See Repair Manual >> Electrical System >>
Electrical Equipment General Information >> Wiring 97.)
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For repairs on vehicle electrical system, soldering is not permitted.
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Do not repair crimp connectors. If necessary, lay a wire parallel to the inoperative wire.
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After crimping, crimp connections must be heat-shrunk using hot air gun to prevent moisture penetration.
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Yellow wires are to be used exclusively for wiring harness repairs.
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Mark repaired areas using yellow adhesive tape.
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Yellow wires and areas in the wiring harness wrapped with yellow adhesive tape mark a previously performed repair.
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Perform a function test after each repair. If necessary, check DTC memory, erase and/or bring systems into basic setting.
Procedure
1. With the ignition switched off, disconnect battery ground (GND) cable. (See Repair Manual >> Electrical Equipment >> Repair Group 27 >>
Battery.) Disconnecting battery ground wire is necessary to work safely on the vehicle electrical system.
Warning: The above step must be completed to ensure safety during the repair. Also, observe all country-specific regulations.
2. Use the applicable repair manual in Elsa in addition to the description below. Check ETKA to determine if you need set 1 or set 2.
