Index Isuzu Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross - service repair manual 1999-2002 year
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6E2–227 RODEO 6VD1 3.2L ENGINE DRIVEABILITY AND EMISSIONS D A history DTC P0172 will clear after 40 consecutive D DTC P0172 can be cleared by using the Tech 2 “Clear Diagnostic Aids Check for the following conditions: D Poor connection at PCM – Inspect harness connectors D Damaged harness – Inspect the wiring harness for Reviewing the Failure Records vehicle mileage since the the condition that caused the DTC to be set occurs. This Test Description Number(s) below refer to the step number(s) on the condition present which may cause a lean condition. 4. If the DTC P0172 test passes while the Failure Records conditions are being duplicated, the rich Diagnostic Aids or Symptoms for additional information on diagnosing DTC P0172 – Fuel Trim System Rich Bank 1
Step Action Value(s) Yes No 1 Was the “On-Board Diagnostic (OBD) System Check” — Go to Step 2 Go to OBD System Check 2 Are any DTCs set other than P0172 and P0175? — Go to the applicable DTC charts and repair the other DTCs before proceeding with this chart Go to Step 3 3 1. Start the engine and operate the vehicle in “closed loop”. 2. Observe “B1 Long Term Fuel Trim” display on the Tech 2. Is the displayed value more negative than the specified L.T. Fuel Trim: –15% (auto. trans.) OR –12% (man. trans.) Go to Step 5 Go to Step 4 4 1. Review and record the Tech 2 Failure Records data. vehicle to duplicate the Failure Records conditions. 3. Monitor the Tech 2 “DTC” info for DTC P0172 while operating the vehicle to duplicate the Failure 4. Continue operating the vehicle until the DTC P0172 test runs and note test result. Does the Tech 2 indicate DTC P0172 failed this — Go to Step 5 The rich condition is not present. If a driveability symptom still exists, refer to Symptoms. 5 Is DTC P0175 also set? — Go to Step 6 Go to Step 15 6 Visually and physically inspect the air filter element and Did the air filter require replacement? — Verify repair Go to Step 7 7 Visually and physically inspect the air intake duct for Did your inspection reveal a condition requiring repair? — Verify repair Go to Step 8 |