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6E–158 ENGINE DRIVEABILITY AND EMISSIONS 12 Check for the following conditions. • Objects blocking the IAC valve. • Objects blocking the throttle valve. • Vacuum leaking at throttle body. — Verify repair Go to Step 13 13 Check for injector for the affected bank. — Go to Step 14 Refer to Injector Coil Test & Injector Balance Test Procedure 14 Check for fuel pressure. — Go to Step 15 Refer to Fuel System Diagnosis 15 Replace the O 2 sensor. Was the problem solved? — Verify repair Go to Step 16 16 Is the ECM programmed with the latest software — Verify repair Go to Step 17 17 Replace the ECM. — Verify repair — Step Action Value(S) Yes No |