SYMPTOM DIAGNOSTIC INDEX [MZ-CD 1.6 (Y6)]

id0103b3805100

• Confirm the trouble symptom using the following diagnostic index, then go to the appropriate troubleshooting chart.

No.

TROUBLESHOOTING ITEM

DESCRIPTION

PAGE

1

Melting of main or other fuses

—

(See NO.1 MELTING OF MAIN OR OTHER FUSES [MZ-CD 1.6 (Y6)].)

2

MIL illuminates

The MIL is illuminated incorrectly.

(See NO.2 MIL ILLUMINATES [MZ-CD 1.6 (Y6)].)

3

Will not crank

The starter does not work.

(See NO.3 WILL NOT CRANK [MZ-CD 1.6 (Y6)].)

4

Hard start/long crank/erratic start/erratic crank

The starter cranks the engine at the normal speed but the engine requires excessive cranking time before starting.

(See NO.4 HARD START/LONG CRANK/ERRATIC START/ERRATIC CRANK [MZ-CD 1.6 (Y6)].)

5

Engine stalls

After start/at idle

The engine stops unexpectedly at idle and/or after start.

(See NO.5 ENGINE STALLS-AFTER START/AT IDLE [MZ-CD 1.6 (Y6)].)

6

Cranks normally but will not start

The starter cranks the engine at the normal speed but the engine will not run.

(See NO.6 CRANKS NORMALLY BUT WILL NOT START [MZ-CD 1.6 (Y6)].)

7

Slow return to idle

The engine takes more time than normal to return to idle speed.

(See NO.7 SLOW RETURN TO IDLE [MZ-CD 1.6 (Y6)].)

8

Engine runs rough/rolling idle

The engine speed fluctuates between the specified idle speed and lower speed, and the engine shakes excessively.

(See NO.8 ENGINE RUNS ROUGH/ROLLING IDLE [MZ-CD 1.6 (Y6)].)

9

Fast idle/runs on

The engine speed continues at fast idle after warm-up.

The engine runs after the engine switch is turned off.

(See NO.9 FAST IDLE/RUNS ON [MZ-CD 1.6 (Y6)].)

10

Low idle/stalls during deceleration

The engine stops unexpectedly at the beginning of deceleration or recovery from deceleration.

(See NO.10 LOW IDLE/STALLS DURING DECELERATION [MZ-CD 1.6 (Y6)].)

11

Engine stalls/quits

Acceleration/cruise

The engine stops unexpectedly at the beginning of acceleration or during acceleration.

The engine stops unexpectedly while cruising.

(See NO.11 ENGINE STALLS/QUITS, ENGINE RUNS ROUGH, MISSES, BUCK/JERK, HESITATION/STUMBLE, SURGES [MZ-CD 1.6 (Y6)].)

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

The momentary pause at the beginning of acceleration or during acceleration.

Surges

Acceleration/cruise

The momentary minor irregularity in engine output.

12

Lack/loss of power

Acceleration/cruise

Performance is poor under load (e.g. power down when climbing hills).

(See NO.12 LACK/LOSS OF POWER-ACCELERATION/CRUISE [MZ-CD 1.6 (Y6)].)

13

Knocking/pinging

The excessive shrilly knocking sound from the engine.

(See NO.13 KNOCKING/PINGING [MZ-CD 1.6 (Y6)].)

14

Poor fuel economy

The fuel economy is unsatisfactory.

(See NO.14 POOR FUEL ECONOMY [MZ-CD 1.6 (Y6)].)

15

Emissions compliance

Fails the emissions test.

(See NO.15 EMISSION COMPLIANCE [MZ-CD 1.6 (Y6)].)

16

High oil consumption/leakage

The oil consumption is excessive.

(See NO.16 HIGH OIL CONSUMPTION/LEAKAGE [MZ-CD 1.6 (Y6)].)

17

Cooling system concerns

Overheating

The engine runs at higher than normal temperature/overheats.

(See NO.17 COOLING SYSTEM CONCERNS-OVERHEATING [MZ-CD 1.6 (Y6)].)

18

Cooling system concerns

Runs cold

The engine does not reach normal operating temperature.

(See NO.18 COOLING SYSTEM CONCERNS-RUNS COLD [MZ-CD 1.6 (Y6)].)

19

Excessive black smoke

Excessive black smoke is observed in the exhaust gas.

(See NO.19 EXCESSIVE BLACK SMOKE [MZ-CD 1.6 (Y6)].)

20

Fuel odor (in engine compartment)

Fuel smell or visible leakage.

(See NO.20 FUEL ODOR (IN ENGINE COMPARTMENT) [MZ-CD 1.6 (Y6)].)

21

Engine noise

Engine noise from under the hood.

(See NO.21 ENGINE NOISE [MZ-CD 1.6 (Y6)].)

22

Vibration concerns (engine)

Vibration from under the hood or driveline.

(See NO.22 VIBRATION CONCERNS (ENGINE) [MZ-CD 1.6 (Y6)].)

23

A/C does not work sufficiently

The A/C compressor magnetic clutch does not engage when the A/C is turned on.

(See NO.23 A/C DOES NOT WORK SUFFICIENTLY [MZ-CD 1.6 (Y6)].)

24

A/C always on or A/C compressor runs continuously

The A/C compressor magnetic clutch does not disengage.

(See NO.24 A/C ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY [MZ-CD 1.6 (Y6)].)

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.

(See NO.25 A/C DOES NOT CUT OFF UNDER WIDE OPEN THROTTLE CONDITIONS [MZ-CD 1.6 (Y6)].)

No.	TROUBLESHOOTING ITEM		DESCRIPTION	PAGE
1	Melting of main or other fuses		—	(See NO.1 MELTING OF MAIN OR OTHER FUSES [MZ-CD 1.6 (Y6)].)
2	MIL illuminates		The MIL is illuminated incorrectly.	(See NO.2 MIL ILLUMINATES [MZ-CD 1.6 (Y6)].)
3	Will not crank		The starter does not work.	(See NO.3 WILL NOT CRANK [MZ-CD 1.6 (Y6)].)
4	Hard start/long crank/erratic start/erratic crank		The starter cranks the engine at the normal speed but the engine requires excessive cranking time before starting.	(See NO.4 HARD START/LONG CRANK/ERRATIC START/ERRATIC CRANK [MZ-CD 1.6 (Y6)].)
5	Engine stalls	After start/at idle	The engine stops unexpectedly at idle and/or after start.	(See NO.5 ENGINE STALLS-AFTER START/AT IDLE [MZ-CD 1.6 (Y6)].)
6	Cranks normally but will not start		The starter cranks the engine at the normal speed but the engine will not run.	(See NO.6 CRANKS NORMALLY BUT WILL NOT START [MZ-CD 1.6 (Y6)].)
7	Slow return to idle		The engine takes more time than normal to return to idle speed.	(See NO.7 SLOW RETURN TO IDLE [MZ-CD 1.6 (Y6)].)
8	Engine runs rough/rolling idle		The engine speed fluctuates between the specified idle speed and lower speed, and the engine shakes excessively.	(See NO.8 ENGINE RUNS ROUGH/ROLLING IDLE [MZ-CD 1.6 (Y6)].)
9	Fast idle/runs on		The engine speed continues at fast idle after warm-up. The engine runs after the engine switch is turned off.	(See NO.9 FAST IDLE/RUNS ON [MZ-CD 1.6 (Y6)].)
10	Low idle/stalls during deceleration		The engine stops unexpectedly at the beginning of deceleration or recovery from deceleration.	(See NO.10 LOW IDLE/STALLS DURING DECELERATION [MZ-CD 1.6 (Y6)].)
11	Engine stalls/quits	Acceleration/cruise	The engine stops unexpectedly at the beginning of acceleration or during acceleration. The engine stops unexpectedly while cruising.	(See NO.11 ENGINE STALLS/QUITS, ENGINE RUNS ROUGH, MISSES, BUCK/JERK, HESITATION/STUMBLE, SURGES [MZ-CD 1.6 (Y6)].)
	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	The momentary pause at the beginning of acceleration or during acceleration.
	Surges	Acceleration/cruise	The momentary minor irregularity in engine output.
12	Lack/loss of power	Acceleration/cruise	Performance is poor under load (e.g. power down when climbing hills).	(See NO.12 LACK/LOSS OF POWER-ACCELERATION/CRUISE [MZ-CD 1.6 (Y6)].)
13	Knocking/pinging		The excessive shrilly knocking sound from the engine.	(See NO.13 KNOCKING/PINGING [MZ-CD 1.6 (Y6)].)
14	Poor fuel economy		The fuel economy is unsatisfactory.	(See NO.14 POOR FUEL ECONOMY [MZ-CD 1.6 (Y6)].)
15	Emissions compliance		Fails the emissions test.	(See NO.15 EMISSION COMPLIANCE [MZ-CD 1.6 (Y6)].)
16	High oil consumption/leakage		The oil consumption is excessive.	(See NO.16 HIGH OIL CONSUMPTION/LEAKAGE [MZ-CD 1.6 (Y6)].)
17	Cooling system concerns	Overheating	The engine runs at higher than normal temperature/overheats.	(See NO.17 COOLING SYSTEM CONCERNS-OVERHEATING [MZ-CD 1.6 (Y6)].)
18	Cooling system concerns	Runs cold	The engine does not reach normal operating temperature.	(See NO.18 COOLING SYSTEM CONCERNS-RUNS COLD [MZ-CD 1.6 (Y6)].)
19	Excessive black smoke		Excessive black smoke is observed in the exhaust gas.	(See NO.19 EXCESSIVE BLACK SMOKE [MZ-CD 1.6 (Y6)].)
20	Fuel odor (in engine compartment)		Fuel smell or visible leakage.	(See NO.20 FUEL ODOR (IN ENGINE COMPARTMENT) [MZ-CD 1.6 (Y6)].)
21	Engine noise		Engine noise from under the hood.	(See NO.21 ENGINE NOISE [MZ-CD 1.6 (Y6)].)
22	Vibration concerns (engine)		Vibration from under the hood or driveline.	(See NO.22 VIBRATION CONCERNS (ENGINE) [MZ-CD 1.6 (Y6)].)
23	A/C does not work sufficiently		The A/C compressor magnetic clutch does not engage when the A/C is turned on.	(See NO.23 A/C DOES NOT WORK SUFFICIENTLY [MZ-CD 1.6 (Y6)].)
24	A/C always on or A/C compressor runs continuously		The A/C compressor magnetic clutch does not disengage.	(See NO.24 A/C ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY [MZ-CD 1.6 (Y6)].)
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.	(See NO.25 A/C DOES NOT CUT OFF UNDER WIDE OPEN THROTTLE CONDITIONS [MZ-CD 1.6 (Y6)].)