Mazda MX-6 1998, Workshop Manual

Page: 336 / 1282

TROUBLESHOOTING [ENGINE CONTROL KL]
Quick Diagnostic Chart
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<r
1
Melts main or other fuse
1
to1 i n s p p l ca b i e
2
Will not crank
X
X
X X X X
3
Hard start/long crank/
erratic stan/erratic crank
X X X
X X X X X X X X
4
Engine stalls After start
X X X
X X X X X X X X X X X X X X X
At idle
X X X X X X X X X X X X X X X X X X
5
Cranks normally but will
not start
X X X
X X X X X X X X X X X X X X
6
Slow return to idle
X X
7
Engine runs rough/
rolling idle
X X
X X X X X X X X X X X X X
8
Fast idle/runs on
X X
9
Low idle/ stalls during
deceleration
X X
10
Engine stalls/quits Acceleration/cruise
X X X X X X X X X X X X X X X
Engine runs rough AcceieratiorVcruise
Misses AcceleraborVcruise
Buck/jerk Acceleration/cruise
/ deceleration
Hesitation/stumble
Acceleration
Surges Acceleration/cruise
11
Lack/loss of power AcceleraOon/crulse
X X X X X X X X X X X X X
12 Knocking/pinging
Acceleration/cruise
X
X X X X
13 Poor luel economy X X X X X X X X X X X
14 Emission compkance
X X
X X X X X X X X
X
15 MIL never on
16
High oil
consumption/leaks
X X X
17
Cooling system concerns Overheating
X X X X
-
18
Cooling system concerns Runs cow
X X
19 Exhaust smoke X X
X
X X X X
20
Fuel odor (in engine
compartment)
X
21
Engine noise
X X X
X
X
22
Vibration
concerns(engme)
X X X
23 A/C does not work
24
A/C always on/A/C
compressor runs
continuously
25
A/C does not cut off
under wide open throttle
conditions
26
Exhaust sultur smell X
27 Intermittent concerns
X
X
X
X X
X
X
28
Automatic transaxie Upshift/downshift/
0 5 - 0 1 E A UTC
MA T IC
T
RA 'iSA XL SY MPI OM TF OU BLE s
m
)T 1 NG
[C
F4 A-E L ]
29 Fuel refill issues
30
Fuel refilling shut oil
31
Constant voltage
W6U101WKR
01-01B -1 30