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Home >> Audi >> 2008 >> A3 Base, 2.0 E, Standard >> Repair and Diagnosis >> Engine Performance >> System >> 2.0L - Generic Scan Tool - Engine Code(S): CBFA (As Of 11.2011) >> St Generic Scan Tool >> Diagnosis And Testing >> Diagnostic Procedures >> Lin-Bus Circuit, Checking >> Checking Wiring

Checking Wiring

If the manufacturers test box is being used, perform the following step.

-- Install the test box.

If the manufacturers test box is not being used, perform the following step.

-- Remove the Motronic Engine Control Module (ECM) - J623 -. Refer to appropriate service information.

-- Using a Multimeter, check the Radiator Identification Sensor -G611- electrical harness connector to the Motronic Engine Control Module (ECM) -J623- electrical harness connector T94 for resistance.

Fig 1: Identifying 3-Pin Electrical Harness Connector
GWWN24-1001Courtesy of AUDI OF AMERICA, LLC
Radiator Identification Sensor - G611- electrical harness connector. Motronic Engine Control Module (ECM) electrical harness connector T94 terminals or test box sockets
1 52

Specified value: 1.5 Ω Max.

If the specified value was Not obtained:

-- Check the wiring connection for an open circuit, short circuit to Battery positive or Ground

-- Check the wiring connection for damage, corrosion, loose or broken terminals.

-- If necessary, repair the faulty wiring connection.

-- Go to Final procedures

If the specified value was obtained:

-- With the Motronic Engine Control Module (ECM) Connectors still unplugged - J623 -. Refer to appropriate service information.

-- Use a Multimeter, Check the Radiator Identification Sensor -G611- electrical harness connector terminal 1 to engine ground for continuity

If Specified value is 1.5 Ω or less

-- Check the wiring connection for a short circuit to Engine Ground

-- If necessary, repair the faulty wiring or connection, If no faults were found Replace the Motronic Engine Control Module (ECM) - J623 -. Refer to appropriate service information.

-- Go to Final procedures



If the manufacturers test box is being used, perform the following step.

-- Install the test box.

If the manufacturers test box is not being used, perform the following step.

-- Remove the Motronic Engine Control Module (ECM) - J623 -. Refer to appropriate service information.

-- Using a Multimeter, check the Radiator Identification Sensor -G611- electrical harness connector to the Motronic Engine Control Module (ECM) -J623- electrical harness connector T94 for resistance.

Fig 1: Identifying 3-Pin Electrical Harness Connector
GWWN24-1001Courtesy of AUDI OF AMERICA, LLC
Radiator Identification Sensor -G611- electrical harness connector terminals Motronic Engine Control Module (ECM) -J623- electrical connector T94 terminals or test box sockets
2 64

Specified value: 1.5 Ω Max.

If the specified value was Not obtained:

-- Check the wiring connection for an open circuit, short circuit to Battery positive or Ground

-- Check the wiring connection for damage, corrosion, loose or broken terminals.

-- If necessary, repair the faulty wiring connection.

-- Go to Final procedures

If the specified value was obtained:

-- Replace the Radiator Identification Sensor - G611- (with radiator assembly). Refer to the appropriate service information.

Final procedures 

-- Reinstall the engine cover with air filter, if necessary. Refer to the appropriate service information.

-- After the repair work, the following work steps must be performed in the following sequence:

  1. Check the DTC memory. Refer to DIAGNOSTIC MODE 03 - READ DTC MEMORY .
  2. If necessary, erase the DTC memory. Refer to DIAGNOSTIC MODE 04 - ERASE DTC MEMORY .
  3. If the DTC memory was erased, generate readiness code. Refer to READINESS CODE .