Toyota 4 Runner 2002 — technical service bulletin
Bulletin 02502 · NHTSA communication 10000656 · issued Dec 24, 2002
Technical service bulletin
communication type
Engine and Engine Cooling
component
2002
model years
2
vehicle entries
Official summary
Malfunction indicator lamp on with diagnostic trouble code p0770 stored. *tt
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.