THE 2017 POWERTRAIN CONTROL/EMISSIONS DIAGNOSIS (PC/ED) MANUAL HAS BEEN REVISED FOR DIAGNOSING ELECTRONIC THROTTLE BODIES (ETBS). FOR ALL ETB CONCERNS, THE APPROPRIATE DIAGNOSTIC MUST BE COMPLETED BEFORE THROTTLE BODY REPLACEMENT. IF A CONCERN IS INTERMITTENT AND NO DTCS ARE PRESENT, REFER TO HISTORICAL DTCS AND THE PC/ED, SECTION 3 NO DTCS PRESENT INDEX CHART FOR FURTHER INFORMATION.
