|
|
6E–129 3.2L ENGINE DRIVEABILITY AND EMISSIONS DTC P0172 – Fuel Trim System Rich (Cont'd) Step No Yes Value(s) Action 18 Replace the ECM. IMPORTANT: The replacement ECM must be On-Vehicle Service in Engine Control Module and Sensors for procedures. Is the action complete? — Verify repair — 19 1. Perform the “Injector Balance Test.” necessary (refer to Fuel Metering System). Did the Injector Balance Test isolate a problem — Verify repair Go to Step 20 20 1. Remove and visually/physically inspect the HO2S for silicon contamination. This will be indicated by a 2. If contamination is evident on the Bank 1 HO2S 1, replace the contaminated sensors. Did the sensor require replacement? — Verify repair Refer to Diagnostic Aids 21 1. Check the TP sensor mounting screws and tighten or replace them as necessary if they are loose or 2. If the screws are OK, replace the TP sensor. Is the action complete? — Verify repair — 22 Replace the MAF sensor. Is the action complete? — Verify repair — |