Mazda Protege 5. Manual - part 88

 

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Mazda Protege 5. Manual - part 88

 

 

SYMPTOM TROUBLESHOOTING [ENGINE CONTROL SYSTEM (ZM)]

01–03A–5

01–03A

Inspection Method for Switch Connectors or Wires

1. Connect WDS or equivalent to DLC-2.
2. Turn ignition key to ON (Engine OFF).

Note

If engine starts and runs, perform the following steps at idle.

3. Access PIDs for the switch you are inspecting.
4. Turn switch on manually.
5. Shake each connector or wire harness a bit vertically and horizontally while monitoring the PID.

If PID value is unstable, check for poor connection.

Inspection Method for Sensor Connectors or Wires

1. Connect WDS or equivalent to DLC-2.
2. Turn ignition key to ON (Engine OFF).

Note

If engine starts and runs, perform the following steps at idle.

3. Access PIDs for the switch you are inspecting.
4. Shake each connector or wire harness a bit vertically and horizontally while monitoring the PID.

If PID value is unstable, check for poor connection.

Inspection Method for Sensors

1. Connect WDS or equivalent to DLC-2.
2. Turn ignition key to ON (Engine OFF).

Note

If engine starts and runs, perform the following steps at idle.

3. Access PIDs for the switch you are inspecting.
4. Vibrate the sensor slightly with your finger.

If PID value is unstable or malfunction occurs, check for poor connection and/or poorly mounted sensor.

YMU103WC0

YMU103WC1

1712-1U-01G(01-03A).fm  5 ページ  2001年6月29日 金曜日 午後4時45分

SYMPTOM TROUBLESHOOTING [ENGINE CONTROL SYSTEM (ZM)]

01–03A–6

Inspection Method for Actuators or Relays

1. Connect WDS or equivalent to DLC-2.
2. Turn ignition key to ON (Engine OFF).

Note

If engine starts and runs, perform the following steps at idle.

3. Prepare the SIMULATION TEST for actuators or relays that you are inspecting.
4. Vibrate the actuator or relay with your finger for 3 seconds after SIMULATION TEST is activated.

If variable click sound is heard, check for poor connection and/or poorly mounted actuator or relay.

Note

Vibrating relays too strongly may result in 
open relays.

Water Sprinkling Method
If malfunction occurs only during high humidity or rainy/snowy weather, perform the following steps.

Caution

••••

Indirectly change the temperature and humidity by spraying water onto the front of the radiator.

••••

If a vehicle is subject to water leakage, the leakage may damage the control module. When testing 
a vehicle with a water leakage problem, special caution must be used.

1. Connect WDS or equivalent to DLC-2 if you are inspecting sensors or switches.
2. Turn ignition key to ON (Engine OFF).

Note

If engine starts and runs, perform the following steps at idle.

3. Access PIDs for sensor or switch if you are inspecting sensors or switches.

If you are inspecting the switch, turn it on manually.

4. Spray water onto the vehicle or run it through a car wash.

If PID value is unstable or malfunction occurs, repair or replace part as necessary.

End Of Sie

YMU103WC2

Y5U103WA6

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SYMPTOM TROUBLESHOOTING [ENGINE CONTROL SYSTEM (ZM)]

01–03A–7

01–03A

SYMPTOM DIAGNOSTIC INDEX [ZM]

A3U010318881W41

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

Diagnostic Index

No.

TROUBLESHOOTING ITEM

DESCRIPTION

PAGE

1

Melting of main or other fuses

(See 01–03A–13 NO.1 
MELTING OF MAIN OR 
OTHER FUSES [ZM].)

2

MIL illuminates

MIL is illuminated incorrectly.

(See 01–03A–14 NO.2 MIL 
ILLUMINATES [ZM].)

3

Will not crank

Starter does not work.

(See 01–03A–14 NO.3 WILL 
NOT CRANK [ZM].)

4

Hard start/long crank/erratic start/
erratic crank

Starter cranks engine at normal speed but 
engine requires excessive cranking time 
before starting.

(See 01–03A–15 NO.4 HARD 
TO START/LONG CRANK/
ERRATIC START/ERRATIC 
CRANK [ZM].)

5

Engine stalls.

After start/at idle

Engine stops unexpectedly at idle and/or 
after start.

(See 01–03A–18 NO.5 
ENGINE STALLS-AFTER 
START/AT IDLE [ZM].)

6

Cranks normally but will not start

Starter cranks engine at normal speed but 
engine will not run.

(See 01–03A–21 NO.6 
CRANKS NORMALLY BUT 
WILL NOT START [ZM].)

7

Slow return to idle

Engine takes more time than normal to 
return to idle speed.

(See 01–03A–24 NO.7 SLOW 
RETURN TO IDLE [ZM].)

8

Engine runs rough/rolling idle

Engine speed fluctuates between specified 
idle speed and lower speed and engine 
shakes excessively.

(See 01–03A–25 NO.8 
ENGINE RUNS ROUGH/
ROLLING IDLE [ZM].)

9

Fast idle/runs on

Engine speed continues at fast idle after 
warm-up. Engine runs after ignition key is 
turned to OFF.

(See 01–03A–27 NO.9 FAST 
IDLE/RUNS ON [ZM].)

10

Low idle/stalls during deceleration

Engine stops unexpectedly at beginning of 
deceleration or recovery from deceleration.

(See 01–03A–28 NO.10 LOW 
IDLE/STALLS DURING 
DECELERATION [ZM].)

11

Engine stalls/
quits.

Acceleration/
cruise

Engine stops unexpectedly at beginning of 
acceleration or during acceleration. Engine 
stops unexpectedly while cruising.

(See 01–03A–29 NO.11 
ENGINE STALLS/QUITS, 
ENGINE RUNS ROUGH, 
MISSES, BUCK/JERK, 
HESITATION/STUMBLE, 
SURGES [ZM].)

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

12

Lack/loss of 
power

Acceleration/
cruise

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

(See 01–03A–32 NO.12 LACK/
LOSS OF 
POWER-ACCELERATION/
CRUISE [ZM].)

13

Knocking/pinging

Acceleration/
cruise

Sound is produced when air/fuel mixture is 
ignited by something other than spark plug 
(e.g. hot spot in combustion chamber).

(See 01–03A–34 NO.13 
KNOCKING/
PINGING-ACCELERATION/
CRUISE [ZM].)

14

Poor fuel economy

Fuel economy is unsatisfactory.

(See 01–03A–35 NO.14 POOR 
FUEL ECONOMY [ZM].)

15

Emission compliance

Fails emissions test

(See 01–03A–37 NO.15 
EMISSION COMPLIANCE 
[ZM].)

16

High oil consumption/leakage

Oil consumption is excessive.

(See 01–03A–38 NO.16 HIGH 
OIL CONSUMPTION/
LEAKAGE [ZM].)

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SYMPTOM TROUBLESHOOTING [ENGINE CONTROL SYSTEM (ZM)]

01–03A–8

End Of Sie

17

Cooling system 
concerns

Overheating

Engine runs at higher than normal 
temperature/overheats.

(See 01–03A–39 NO.17 
COOLING SYSTEM 
CONCERNS-OVERHEATING 
[ZM].)

18

Cooling system 
concerns

Runs cold

Engine does not reach normal operating 
temperature.

(See 01–03A–40 NO.18 
COOLING SYSTEM 
CONCERNS-RUNS COLD 
[ZM].)

19

Exhaust smoke

Blue, black, or white smoke from exhaust 
system

(See 01–03A–41 NO.19 
EXHAUST SMOKE [ZM].)

20

Fuel odor (in engine compartment)

Gasoline fuel smell or visible leakage

(See 01–03A–43 NO.20 FUEL 
ODOR (IN ENGINE 
COMPARTMENT) [ZM].)

21

Engine noise

Engine noise from under hood

(See 01–03A–44 NO.21 
ENGINE NOISE [ZM].)

22

Vibration concerns (engine)

Vibration from under hood or driveline

(See 01–03A–45 NO.22 
VIBRATION CONCERNS 
(ENGINE) [ZM].)

23

A/C does not work sufficiently.

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

(See 01–03A–45 NO.23 A/C 
DOES NOT WORK 
SUFFICIENTLY [ZM].)

24

A/C is always ON/A/C compressor 
runs continuously.

A/C compressor magnetic clutch does not 
disengage.

(See 01–03A–46 NO.24 A/C IS 
ALWAYS ON/A/C 
COMPRESSOR RUNS 
CONTINUOUSLY [ZM].)

25

A/C does not cut off under wide open 
throttle conditions.

A/C compressor magnetic clutch does not 
disengage under wide open throttle.

(See 01–03A–47 NO.25 A/C 
DOES NOT CUT OFF UNDER 
WIDE OPEN THROTTLE 
CONDITIONS [ZM].)

26

Exhaust sulphur smell

Rotten egg smell (sulphur) from exhaust

(See 01–03A–47 NO.26 
EXHAUST SULPHUR SMELL 
[ZM].)

27

Fuel refill concerns

Fuel tank does not fill smoothly.

(See 01–03A–48 NO.27 FUEL 
REFILL CONCERNS [ZM].)

28

Fuel filling shut off issues

Fuel does not shut off properly.

(See 01–03A–49 NO.28 FUEL 
FILLING SHUT OFF ISSUES 
[ZM].)

29

Intermittent concerns

Symptom occurs randomly and is difficult to 
diagnose.

(See 01–03A–49 NO.29 
INTERMITTENT CONCERNS 
[ZM].)

30

Constant voltage

Incorrect constant voltage

(See 01–03A–50 NO.30 
CONSTANT VOLTAGE [ZM].)

31

Spark plug condition

Incorrect spark plug condition

(See 01–03A–52 NO.31 
SPARK PLUG CONDITION 
[ZM].)

32

ATX concerns

Upshift/downshift/ 
engagement

ATX concerns not related to engine 
performance

(See 05–03–7 AUTOMATIC 
TRANSAXLE SYMPTOM 
TROUBLESHOOTING ITEM 
TABLE.)

No.

TROUBLESHOOTING ITEM

DESCRIPTION

PAGE

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