Buick LaCrosse sedan cruise regulate operate failure 2.four

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A mileage of cummins insite 7.6 about one hundred fifty,000 km, geared up LE5 engine of 2008 two.four Shanghai GM Buick LaCrosse sedan . End users report: auto cruise manage operate failure.

Inspection and examination : upkeep staff check observed that the car's cruise cruise command change is turned on , the corresponding indicator gm tech2 light-weight about the instrument panel isn't lit , indicating that the system doesn't start off . Cruise manage switch relationship failure diagnostic check out point out knowledge , discovered that when the swap is turned on , even so the display screen is not really switched details .

Troubleshooting : Following acquiring the car connection ISID diagnostic tests , diagnostic examination final results plus the motor command module to display screen numerous linked DME fault memory . Following you delete the fault storage , instrument malfunction lights go out . Start out carsoft 7.4 the engine , sleek idling, acceleration usual street exam , no shifting flame failure phenomenon. Cars sent to the person. Per week or so , the vehicle returned on the maker , the car or truck displays the flame failure phenomenon all over again. ISID diagnostic exams along with the last fault saved as . Carry out screening method , ISTA technique fault memory contents are categorised by classes .

Disconnect the connector in the blend swap , the cruise management switch resistance measurement , the resistance was located in the on launch x431 posture is 55 k, and also the usual condition of 8. Consequently, the engine manage unit can not acknowledge the state with the swap , to ensure the operate can't be turned on.

Therefore drop : Replace the combination change , exam to confirm troubleshooting.

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