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ON-BOARD DIAGNOSTIC [L3 WITH TC] 01-02–219 01-02 6 VERIFY CURRENT INPUT SIGNAL STATUS • Inspect the same PIDs as Step 5 while simulating FREEZE FRAME DATA condition. • Is there any signal which causes drastic changes? Yes Inspect the sensor and related wiring harnesses repair or No Go to the next step. 7 VERIFY CURRENT INPUT SIGNAL STATUS OF • Access the O2S11 for P2177 PID using the M- MDS. • Check the PID under following accelerator pedal condition in NEUTRAL. • Is the PID reading normal? — –0.1— 0.1 A when idle — More than 0.25 mA just after release of accelerator pedal (lean condition). Yes Go to the next step. No Visually inspect for any gas leakage between the exhaust 8 VERIFY CURRENT INPUT SIGNAL STATUS OF • Connect the M-MDS to the DLC-2. • Start the engine. • Access the MAF PID. • Verify that the MAF PID changes quickly according to engine speed. • Is the PID normal? Yes Go to the next step. No Replace the MAF/IAT sensor, then go to Step 20. 9 INSPECT FOR EXCESSIVE AIR SUCTION OF • Visually inspect for loosen, cracks or damages hoses on intake-air system. • Is there any malfunction? Yes Repair or replace the source of air suction, then go to Step No Go to the next step. 10 INSPECT PURGE SOLENOID OPERATION • Perform the Purge Control System Inspection. (See01-03-78 ENGINE CONTROL SYSTEM • Does the purge control system work properly? Yes Go to the next step. No Repair or replace the malfunctioning part according to 11 INSPECT FUEL PRESSURE (HIGH-SIDE) • Access and monitor FUEL_PRES PID. • Is the FUEL_PRES PID value within the specified? Yes Go to Step 15. No Go to the next step. 12 IDENTIFY CAUSE BY FUEL PRESSURE • Is the vehicle accelerate performance normally? Yes Go to the next step. No Go to Step 14. 13 INSPECT FUEL PRESSURE SENSOR • Inspect the fuel pressure sensor. • Is fuel leakage found? (See01-40-35 FUEL PRESSURE SENSOR • Is the fuel pressure sensor normal? Yes Go to Step 15. No Replace the fuel delivery pipe, then go to Step 20. 14 INSPECT HIGH PRESSURE FUEL PUMP • Replace the high pressure fuel pump • Monitor FUEL_PRES PID • Is the FUEL_PRES PID value within the specified? (See01-40-6 PCM INSPECTION[L3 WITH TC].) Yes Go to Step 20. No Go to the next step. 15 INSPECT FUEL PRESSURE (LOW-SIDE) • Connect the fuel pressure gauge between fuel pump and high pressure fuel pump. • Measure the low side fuel pressure. (See01-14-5 FUEL LINE PRESSURE • Is the low side fuel pressure within the specified? Yes Go to the next step. No Inspect for following: • Fuel line restriction • Fuel filter clogging If okay replace the fuel pump. Then go to Step 20. STEP INSPECTION ACTION 1871-1U-06B(01-02).fm 219 ページ 2006年3月15日 水曜日 午前10時32分 |