H49 - Flow Test Injector(s)

- Flow test injector(s). Refer to instructions outlined in Fuel Delivery and Air Induction.

- Is the leakage and flow within specification?

YES -- DTCs 1130 and 1150: Go to H51. H51 - Check HO2S Integrity

All others: Go to H50. H50 - Check Cylinder Compression

NO -- CLEAN or REPLACE as instructed. DRIVE vehicle for 5 miles/55 mph. Rerun quick test. Diagnostic Subroutines (DSR) - Extracting Codes