Mazda 3 - Page 7

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
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Load compensation inspection ..................................................................................................... 528
Variable Intake-air Control Operation Inspection .......................................................................... 529
Variable Tumble Control Operation Inspection .............................................................................. 530
Fuel Injector Operation Inspection ................................................................................................... 530
Fuel Cut Control System Inspection ................................................................................................ 531
Fuel Pump Operation Inspection...................................................................................................... 532
Fuel Pump Control System Inspection ............................................................................................ 532
Spark Test ........................................................................................................................................... 532
EGR Control System Inspection ...................................................................................................... 533
Purge Control System Inspection .................................................................................................... 534
A/C Cut-off Control System Inspection ........................................................................................... 535
Cooling Fan Motor Operation Inspection ........................................................................................ 536
Variable Valve Timing Control System Operation Inspection ...................................................... 537
When idling cannot be continued ................................................................................................. 537
When idling can be continued ...................................................................................................... 537
SYMPTOM TROUBLESHOOTING [ENGINE CONTROL SYSTEM (LF)] ........................................................... 539
ENGINE SYMPTOM TROUBLESHOOTING [LF] ............................................................................. 539
QUICK DIAGNOSTIC CHART [LF] ..................................................................................................... 540
NO.1 MELTING OF MAIN OR OTHER FUSES [LF] ........................................................................ 544
NO.2 MIL ILLUMINATES [LF] .............................................................................................................. 546
NO.3 WILL NOT CRANK [LF] .............................................................................................................. 547
NO.4 HARD TO START/LONG CRANK/ERRATIC START/ERRATIC CRANK [LF] .................. 550
NO.5 ENGINE STALLS-AFTER START/AT IDLE [LF] .................................................................... 554
NO.6 CRANKS NORMALLY BUT WILL NOT START [LF] ............................................................. 560
NO.7 SLOW RETURN TO IDLE [LF] .................................................................................................. 566
NO.8 ENGINE RUNS ROUGH/ROLLING IDLE [LF] ........................................................................ 567
NO.9 FAST IDLE/RUNS ON [LF] ......................................................................................................... 573
NO.10 LOW IDLE/STALLS DURING DECELERATION [LF] .......................................................... 574
NO.11 ENGINE STALLS/QUITS, ENGINE RUNS ROUGH, MISSES, BUCK/JERK,
HESITATION/STUMBLE, SURGES [LF] ............................................................................................ 577
NO.12 LACK/LOSS OF POWER-ACCELERATION/CRUISE [LF] ................................................. 583
NO.13 KNOCKING/PINGING-ACCELERATION/CRUISE [LF] ...................................................... 588
NO.14 POOR FUEL ECONOMY [LF] ................................................................................................. 590
NO.15 EMISSION COMPLIANCE [LF] ............................................................................................... 593
NO.16 HIGH OIL CONSUMPTION/LEAKAGE [LF] .......................................................................... 596
NO.17 COOLING SYSTEM CONCERNS-OVERHEATING [LF] .................................................... 597
NO.18 COOLING SYSTEM CONCERNS-RUNS COLD [LF].......................................................... 600