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6E–38 4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS On- Board Diagnostic (OBD) System Check
Step Action Value(s) Yes No 1 1. Ignition “ON,” engine “OFF.” “Check Engine” lamp). Is the MIL (“Check Engine” lamp)“ON?” — Go to Step 2 Go to No MIL (“Check Engine” lamp) 2 1. Ignition “OFF.” Does the Tech 2 display ECM data? — Go to Step 3 Go to Step 8 3 1. Using the Tech 2 output tests function, select MIL (“Check Engine” lamp) dash lamp control and 2. Observe the MIL (“Check Engine” lamp). Did the MIL (“Check Engine” lamp) turn “OFF?” — Go to Step 4 Go to MIL (“Check Engine” lamp) On Steady 4 Attempt to start the engine. Did the engine start and continue to run? — Go to Step 5 Go to Cranks But Will Not Run 5 Select “Display DTCs” with the Tech 2. Are any DTCs stored? — Go to Step 6 Go to Step 7 6 Are two or more of the following DTCs stored? — Go to Chart, “Multiple ECM Information Sensor DTCs Set” Go to applicable 7 Compare ECM data values displayed on the Tech 2 to Are the displayed values normal or close to the typical — Go to Step 8 Refer to indicated Component System 8 1. Ignition “OFF,” disconnect the ECM. ground, or short to voltage. Also, check the DLC 4. If a problem is found, repair as necessary. Was a problem found? — Go to Step 2 Go to Step 9 9 Check the Tech 2 on other vehicle. Was Tech 2 abnormal? — Go to Step 11 Go to Step 10 10 Replace the ECM (Refer to the Data Programming in Is the action complete? — Go to Step 2 — 11 Repair the Tech 2 or prepare another Tech 2. Is the action complete? — Go to Step 2 — |