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SYMPTOM TROUBLESHOOTING [L3 WITH TC] 01-03–21 01-03 Diagnostic procedure STEP INSPECTION RESULTS ACTION 1 Inspect for the following: • Fuel quality (proper octane, contamination, winter/summer blend) • Fuel leakage • Intake-air system leakage or restriction • Vacuum leakage Are all items normal? Yes Go to the next step. No Service if necessary. 2 Perform the self-test function using the M-MDS. Yes DTC is displayed: No No DTC is displayed: 3 Access the ECT PID using the M-MDS. °C {241 °F} during driving. Is the ECT PID less than specified? Yes Go to the next step. No The cause of this concern could be from the cooling 4 Will the engine run smoothly at part throttle? Yes Go to the next step. No Go to Step 6. 5 Perform the TP sweep inspection. Yes Visually inspect the throttle body (damage/scratching.) No Inspect or replace the malfunctioning parts, according 6 Perform the EGR system operation inspection. Yes Go to the next step. No Inspect or replace the malfunctioning parts, according 7 Perform the Purge Control System Operation Yes Go to the next step. No Inspect or replace the malfunctioning parts, according 8 Inspect the CMP and CKP sensor for the • Installation condition (See01-40-45 CAMSHAFT POSITION • Damaged trigger wheel and camshaft • Open or short circuit in the wiring harnesses. Is there any malfunction detected? Yes Repair or replace the malfunctioning part according to No Go to the next step. 9 Access and monitor following the PIDs using the • ECT • MAF • O2S11 • O2S12 • LONGFT1 • SHTFT1 Do the PIDs indicate the correct values under Yes Go to the next step. No Inspect and repair or replace suspected parts and the 10 Remove and shake the PCV valve. Yes Go to the next step. No Replace the PCV valve. 11 Inspect for restriction in the exhaust system and Yes Replace the malfunctioning part. No Go to the next step. 1871-1U-06B(01-03).fm 21 ページ 2006年3月15日 水曜日 午前10時36分 |