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SYMPTOM TROUBLESHOOTING [L3 WITH TC] 01-03–5 01-03 ENGINE SYMPTOM TROUBLESHOOTING[L3 WITH TC] id010339800500 • Verify malfunction symptoms using the following diagnostic index, then go to the appropriate troubleshooting chart. Diagnostic Index End Of Sie No. TROUBLESHOOTING ITEM DESCRIPTION 1 Melting of main or other fuses — 2 MIL illuminates MIL is illuminated. 3 Will not crank Starter does not work. 4 Hard to start/long crank/erratic start/erratic Starter cranks engine at normal speed but engine requires excessive 5 Engine stalls. After start/at idle Engine stops unexpectedly at idle or after start or both. 6 Cranks normally but will not start Starter cranks engine at normal speed but engine will not run. 7 Slow return to idle Engine takes more time than normal to return to idle speed. 8 Engine runs rough/rolling idle Engine speed fluctuates between specified idle speed and lower 9 Fast idle/runs on Engine speed continues at fast idle after warm-up. 10 Low idle/stalls during deceleration Engine stops unexpectedly at beginning of deceleration or recovery 11 Engine stalls/quits. Acceleration/cruise Engine stops unexpectedly at beginning of acceleration or during Engine runs rough. Acceleration/cruise Engine speed fluctuates during acceleration or cruising. Misses Acceleration/cruise Engine misses during acceleration or cruising. Buck/jerk Acceleration/cruise/ Vehicle bucks/jerks during acceleration, cruising, or deceleration. Hesitation/stumble Acceleration Momentary pause at beginning of acceleration or during acceleration Surges Acceleration/cruise Momentary minor irregularity in engine output 12 Lack/loss of power Acceleration/cruise Performance is poor under load. 13 Knocking/pinging Acceleration/cruise Sound is produced when air/fuel mixture is ignited by something other 14 Poor fuel economy Fuel economy is unsatisfactory. 15 Emission compliance Fails emissions test. 16 High oil consumption/leakage Oil consumption is excessive. 17 Cooling system Overheating Engine runs at higher than normal temperature/overheats. 18 Cooling system Runs cold Engine does not reach normal operating temperature. 19 Exhaust smoke Blue, black, or white smoke from exhaust system 20 Fuel odor (in engine compartment) Gasoline fuel smell or visible leakage 21 Engine noise Engine noise from under hood 22 Vibration concerns (engine) Vibration from under hood or driveline 23 A/C does not work sufficiently. A/C compressor magnetic clutch does not engage when A/C is turned 24 A/C is always on or A/C compressor runs A/C compressor magnetic clutch does not disengage. 25 A/C is not cut off under WOT conditions. A/C compressor magnetic clutch does not disengage under WOT. 26 Exhaust sulphur smell Rotten egg smell (sulphur) from exhaust 27 Fuel refill concerns Fuel tank does not fill smoothly. 28 Fuel filling shut off issues Fuel does not shut off properly. 29 Spark plug condition Incorrect spark plug condition 1871-1U-06B(01-03).fm 5 ページ 2006年3月15日 水曜日 午前10時36分 |