Control Valve Position Sensor -G584- / Control Valve Control Unit -J808-, CHECKING

WARNING: This page is about a different car, the 2015 Audi A7 Quattro and 2014 Audi A7 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

Function

The Control Valve Position Sensor -G584- / Control Valve Control Unit -J808- are integrated into one component. They are located in the induction pipe and are monitored and controlled by the Engine Control Module -J623-.

Special tools and workshop equipment required

Multimeter
Wiring Diagram
Scan Tool

Test requirements

Fuses OK.
Battery voltage OK.
Switch OFF all electrical and electronic accessories.
Vehicles with Auto. Transmission, ensure Selector Lever position is in "P".
Vehicles with Man. Transmission, ensure Shifter Lever position is in "N" with Parking Brake applied.
Coolant Temperature: ≥ 80° C.
Observe all safety precautions: SAFETY PRECAUTIONS .
View clean working conditions: CLEAN WORKING CONDITIONS .

Test Procedure

Step	Procedure	Result / Action to Take
1	PERFORM: Preliminary Check to verify the customers complaint. Refer to PRELIMINARY CHECK . -- Was Complaint verified?	-- YES: GO TO Step 2 Control Valve Position Sensor -G584- / Control Valve Control Unit -J808-, CHECKING => 2 . -- NO: GATHER more information from customer about the complaint.
2	DISCONNECT: Control Valve Position Sensor -G584- / Control Valve Control Unit -J808- harness connector. IGNITION: ON. CHECK: Control Valve Position Sensor -G584- / Control Valve Control Unit -J808- harness connector pins 1 to 3 for voltage. SPECIFIED VALUE: About 5.0 V. IGNITION: OFF. -- Was Value obtained?	-- YES: GO TO Step 3 Control Valve Position Sensor -G584- / Control Valve Control Unit -J808-, CHECKING => 3 . -- NO: GO TO Step 4 Control Valve Position Sensor -G584- / Control Valve Control Unit -J808-, CHECKING => 4 .
3	REMOVE: Engine Control Module - J623-. Refer to appropriate service information. CHECK: Control Valve Position Sensor -G584- / Control Valve Control Unit -J808- harness connector terminal 2 to the Engine Control Module - J623- harness connector T94 / 53 for resistance. CHECK: Control Valve Position Sensor -G584- / Control Valve Control Unit -J808- harness connector terminal 4 to the Engine Control Module - J623- harness connector T94 / 48 for resistance. CHECK: Control Valve Position Sensor -G584- / Control Valve Control Unit -J808- harness connector terminal 5 to the Engine Control Module - J623- harness connector T94 / 49 for resistance. SPECIFIED VALUE: 0.5 Ω (± 0.3 Ω). -- Were Values obtained?	-- YES: REPLACE: Control Valve Position Sensor -G584- / Control Valve Control Unit -J808-. Refer to appropriate repair information. GO TO: Step 5 Control Valve Position Sensor -G584- / Control Valve Control Unit -J808-, CHECKING => 5 . -- NO: CHECK: Wiring for open, high resistance, short or harness connector for damage, corrosion, loose or broken terminals. REPAIR: Faulty wiring or connector. GO TO: Step 5 Control Valve Position Sensor -G584- / Control Valve Control Unit -J808-, CHECKING => 5 .
4	REMOVE: Engine Control Module - J623-. Refer to appropriate service information. CHECK: Control Valve Position Sensor -G584- / Control Valve Control Unit -J808- harness connector terminal 1 to the Engine Control Module - J623- harness connector T94 / 63 for resistance. CHECK: Control Valve Position Sensor -G584- / Control Valve Control Unit -J808- harness connector terminal 3 to the Engine Control Module - J623- harness connector T94 / 38 for resistance. SPECIFIED VALUE: 0.5 Ω (± 0.3 Ω). -- Were Values obtained?	-- YES: REPLACE Engine Control Module -J623-. Refer to appropriate repair information. GO TO: Step 5 Control Valve Position Sensor -G584- / Control Valve Control Unit -J808-, CHECKING => 5 . -- NO: CHECK: Wiring for open, high resistance, short or harness connector for damage, corrosion, loose or broken terminals. REPAIR: Faulty wiring or connector. GO TO: Step 5 Control Valve Position Sensor -G584- / Control Valve Control Unit -J808-, CHECKING => 5 .
5	Final Procedure Perform a road test to verify repair. Do any DTC's return:	-- YES: FAULT DOES RETURN: REPLACE: Engine Control Module - J623-. Refer to appropriate repair information. FAULT DOES NOT RETURN: Check the DTC memory. Refer to DIAGNOSTIC MODE 03 - READ DTC MEMORY . Perform the diagnostic procedure for that DTC. -- NO: Repair is complete. Generate readiness code. Refer to READINESS CODE . Return vehicle to Customer.