Touareg 2 V6-3.6L (BHK) (2008)
Test procedure
-
Perform a preliminary check to verify the customers complaint. Refer to --> [ Preliminary Check ] See: Computers and Control Systems/Testing
and Inspection/Scan Tool Testing and Procedures/Preliminary Check
Start diagnosis
Test sequence
-
Remove the Motronic Engine Control Module (ECM) Power Supply Relay (J271).
Checking voltage
-
Using a Multimeter, check the Motronic Engine Control Module (ECM) Power Supply Relay (J271) socket 30 to Ground (GND).
Specified value: battery voltage.
If the specified value was not obtained:
-
Check the wiring connections from the Battery to the Motronic Engine Control Module (ECM) Power Supply Relay (J271) socket 30 for an open
circuit or a short circuit.
-
Check the wiring connections for damage, corrosion, loose or broken terminals.
-
If necessary, repair the faulty wiring connection.
If the specified value was obtained:
-
Switch the ignition on.
-
Using a Multimeter, check the Motronic Engine Control Module (ECM) Power Supply Relay (J271) socket 87 to Ground (GND).
Specified value: battery voltage.
If the specified value was obtained:
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 Engine Control Module (ECM) (J623).
-
Using a Multimeter, check the Motronic Engine Control Module (ECM) Power Supply Relay (J271) socket 85 to the Motronic Engine Control
Module (ECM) (J623) electrical harness connector T94 terminal 69 for resistance.
-
Ensure key is off
Specified value: 2.0 ohms Max.
If the specification was not obtained:
-
Check the wiring for a short circuit to each other, Battery (+), and Ground (GND).
-
Check the electrical harness connector for damage, corrosion, loose or broken terminals.
-
If necessary, repair the faulty wiring connection.