Preliminary Check

WARNING: This page is about a different car, the 2008 Volkswagen GTI, 2007 Volkswagen GTI, and 2006 Volkswagen GTI. However, it is still accessible from the selected car via links, so may be relevant.

Before performing any pin point test or component diagnosis, a preliminary check must be performed.

-- Connect the scan tool.

-- Switch the ignition on.

-- Using the scan tool, check for any stored or related DTC's.

If other DTC's are stored:

-- Repair these DTC's first before performing the following procedure.

If no other DTC's are stored:

-- Using the scan tool, erase the DTC memory. Refer to DIAGNOSTIC MODE 04 - ERASE DTC MEMORY .

-- Perform a road test to attempt to duplicate the customers complaint.

If the DTC returns:

-- Perform the diagnostic procedure.

If the DTC does not return:

-- The fault is intermittent or a sporadic condition may exist.

-- Check the suspected component, electrical harness and electrical harness connectors for damage, corrosion, loose or broken terminals.

-- If necessary, repair the faulty wiring connection.

-- Perform a road test to verify the repair.

If the DTC returns:

-- Perform the diagnostic procedure.

If the DTC does not return:

The fault may have been the result of a loose electrical connection.

-- Generate readiness code. Refer to READINESS CODE .

End of diagnosis