Code B660, Cruise Control Not In Drive: Notes

Code B660 will set in the cruise control is engaged and BCM detects that gear selector is in Park or Neutral. This is done by the BCM based on ECM's input for Park and Neutral. During time failure is present, BCM will disengage cruise control.

Test Number 1)  ECM input EI74 displays P/N gear status as HI or LO depending on voltage state at ECM. Display should read LO only when transaxle is in Park or Neutral. If it reads LO in any other gear selection, switch must be misadjusted or circuit No. 434 (including switch) is shorted to ground.

Test Number 2)  Checks to see if short to ground reading is due to switch or circuit.