SYMPTOM DIAGNOSTIC INDEX [MZI-3.7]
id0103d2800500
Diagnostic Index
No. |
TROUBLESHOOTING ITEM |
DESCRIPTION |
PAGE |
|
---|---|---|---|---|
1
|
Melting of main or other fuses
|
—
|
||
2
|
MIL illuminates
|
The MIL is illuminated incorrectly.
|
||
3
|
Will not crank
|
The starter does not work.
|
||
4
|
Hard to start/long crank/erratic start/erratic crank
|
The starter cranks the engine at normal speed but the engine requires excessive cranking time before starting.
|
||
5
|
Engine stalls.
|
After start/at idle
|
The engine stops unexpectedly at idle and/or after start or both.
|
|
6
|
Cranks normally but will not start
|
The starter cranks engine at normal speed but the engine will not run.
|
||
7
|
Slow return to idle
|
The engine takes more time than normal to return to idle speed.
|
||
8
|
Engine runs rough/rolling idle
|
The engine speed fluctuates between the specified idle speed and lower speed and the engine shakes excessively.
|
||
9
|
Fast idle/runs on
|
The engine speed continues at fast idle after warm-up.
The engine runs after the ignition switch is turned off.
|
||
10
|
Low idle/stalls during deceleration
|
The engine stops unexpectedly at the beginning of deceleration or recovery from deceleration.
|
||
11
|
Engine stalls/quits.
|
Acceleration/cruise
|
The engine stops unexpectedly at the beginning of acceleration or during acceleration.
The engine stops unexpectedly while cruising.
|
|
Engine runs rough.
|
Acceleration/cruise
|
The engine speed fluctuates during acceleration or cruising.
|
||
Misses
|
Acceleration/cruise
|
The engine misses during acceleration or cruising.
|
||
Buck/jerk
|
Acceleration/cruise/ deceleration
|
The vehicle bucks/jerks during acceleration, cruising, or deceleration.
|
||
Hesitation/stumble
|
Acceleration
|
A momentary pause at the beginning of acceleration or during acceleration.
|
||
Surges
|
Acceleration/cruise
|
A momentary minor irregularity in engine output.
|
||
12
|
Lack/loss of power
|
Acceleration/cruise
|
The performance is poor under load (such as power down when climbing hills).
|
|
13
|
Knocking/pinging
|
Acceleration/cruise
|
Sound is produced when the air/fuel mixture is ignited by something other than the spark plug (such as hot spot in combustion chamber).
|
|
14
|
Poor fuel economy
|
The fuel economy is unsatisfactory.
|
||
15
|
Emission compliance
|
Fails emissions test.
|
||
16
|
High oil consumption/leakage
|
The oil consumption is excessive.
|
||
17
|
Cooling system concerns
|
Overheating
|
The engine runs at higher than normal temperature/overheats.
|
|
18
|
Cooling system concerns
|
Runs cold
|
The 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
|
(See NO.21 ENGINE NOISE [MZI-3.7].)
|
|
22
|
Vibration concerns (engine)
|
Vibration from under hood or driveline
|
||
23
|
A/C does not work sufficiently.
|
The A/C compressor magnetic clutch does not engage when A/C is turned on.
|
||
24
|
A/C is always on or A/C compressor runs continuously.
|
The A/C compressor magnetic clutch does not disengage.
|
||
25
|
A/C does not cut off under wide open throttle conditions.
|
The A/C compressor magnetic clutch does not disengage under wide open throttle.
|
||
26
|
Exhaust sulphur smell
|
Rotten egg smell (sulphur) from exhaust
|
||
27
|
Spark plug condition
|
An incorrect spark plug condition.
|
||
28
|
AT concerns
|
Upshift/downshift engagement
|
AT concerns not related to engine performance.
|