2006 Toyota Avalon V6-3.5L (2GR-FE) Automatic
Problem: The vehicle was brought to the shop
with the MIL on and a rough running concern. Another shop has
already replaced the plugs, air filter and fuel filter, which did
not fix the problem.
The technician retrieved a DTC, P0352 (Ignition Coil “B” [No. 2
Coil] Primary/Secondary circuit fault). NOTE:
If there is NO IGF signal to the ECM while the engine is
running (1 trip detection), the corresponding DTC will set for
the affected coil and the MIL will illuminate. Sometimes there
will be multiple ignition coil codes but only one coil is
causing the problem.
After inspecting the wiring and connectors to the coils, the
technician switched #2 and #4 coils. After switching the coils,
DTC P0354 was added to the DTC list.
Confirmed Repair: The technician replaced the
bad coil, which was now located on #4 cylinder, cleared all of
the DTCs and test drove the vehicle. The problem was resolved
and the codes did not return.