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6E1–178 X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION DTC P0404 EGR Circuit Range/Performance (Cont'd) Step No Yes Value(s) Action 13 Check the EGR ground circuit for a poor connection or Was a repair necessary? — Go to Step 19 Go to Step 17 14 Check the 5 V reference circuit for a short to voltage Was a repair necessary? — Go to Step 19 Go to Step 12 15 Check the control circuit for a short to ground and repair Was a repair necessary? — Go to Step 19 Go to Step 12 16 Check the control circuit for an open or poor connection Was a repair necessary? — Go to Step 19 Go to Step 18 17 Replace the EGR valve. Is the action complete? — Go to Step 19 — 18 Check the ECM electrical connector for a poor Was a repair necessary? — Go to Step 19 Go to Step 12 19 1. Using the Tech 2, clear Diagnostic Trouble Codes. temperature. 3. Operate vehicle within the conditions for setting this Diagnostic Trouble Code as specified in the Does the Tech 2 indicate that this diagnostic ”Ran and — Verify repair Go to Step 2 |