Mazda MX-6 1998, Руководство по ремонту

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TROUBLESHOOTING [ENGINE CONTROL FS]
ENGINE SYMPTOM TROUBLESHOOTING [FS]
W6U101W03
Diagnostic Index
TROUBLESHOOTING ITEM
DESCRIPTION
No. TROUBLE
1
Melts main or other fuse
—
2
Will not crank Starter does not work
3 Hard start/long crank/erratic start/erratic crank
Starter cranks engine at normal speed but engine requires
excessive cranking
4 Engine stalls
After start
Engine stops unexpectedly at idle and/or after start
At idle
5 Cranks normally but will not start
Starter cranks engine at normal speed but engine will not run
6
Slow return to idle Engine takes more time than normal to return to idle speed
7 Engine runs rough/rolling idle
Engine speed fluctuates between specified idle speed and lower
speed and excessive engine shake
Idle speed too slow and excessive engine shake
8
Fast idle/runs on
Engine speed continues at fast idle after warm-up
Engine runs after ignition switch is turned off
9 Low idle/stalls during deceleration
Engine stops unexpectedly at beginning of deceleration or
recovery from deceleration
1 0
Engine stalls/quits Acceleration/cruise
Engine stops unexpectedly at beginning of acceleration or during
acceleration
Engine stops unexpectedly while cruising
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
deceleration
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
1 1
Lack/loss of power
Acceleration/cruise
Performance poor under load (i.e., power down when climbing
hills)
1 2
Knocking/pinging
Acceleration/cruise
Sound produced when air/fuel mixture is ignited by something
other than spark plug (i.e., hot spot in combustion chamber)
13
Poor fuel economy Fuel economy unsatisfactory
14
Emissions compliance Fails emissions test
15 MIL never on
Malfunction indicator lamp never on
16 High oil consumption/leaks
Oil consumption excessive
17
Cooling system
concerns
Overheating
Engine runs at higher than normal temperature/overheats
18
Cooling system
concerns
Runs cold Engine does not reach normal operating temperature
19 Exhaust smoke
Blue, black, or white smoke from exhaust system
2 0
Fuel odor (in engine compartment)
Gasoline fuel smell or visible leaks
2 1
Engine noise
Engine noise from under hood
2 2
Vibration concerns (engine)
Vibration from under hood or driveline
23 A/C does not work
A/C compressor magnetic clutch does not engage when A/C is
turned on
24
A/C always on/A/C compressor runs
continuously
A/C compressor magnetic clutch does not disengage
25
A/C does not cut off under wide open throttle
conditions A/C compressor magnetic clutch does not disengage under wide
open throttle
26 Exhaust sulphur smell
Rotten egg smell (sulphur) from exhaust
27 Intermittent concerns
Symptom occurs randomly and is difficult to diagnose
0 1 -0 1 A -1 22