This TSB applies to 2004-2006 Nissan Maxima, 2004-2007 Quest and 2004-2006 Altima with the VQ35 engine. DTC P0300 may be stored in the ECM and one or more ignition coils may show signs of blistering/melting.
The customer may complain about hesitation on acceleration, a rough running engine and engine cranking with no starting.
Inspect the negative battery cable at the transmission end. If the cable reveals faults, replace the negative battery cable, inspect each ignition coil and replace as needed, and verify normal engine operation and check that no DTCs are present.
NOTE: If the battery cable is OK, this bulletin does not apply. Refer to ASIST for further diagnostic and repair information.