Mazda Protege 5. Manual - part 70

 

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Mazda Protege 5. Manual - part 70

 

 

ON-BOARD DIAGNOSTIC [ENGINE CONTROL SYSTEM (FS)]

01–02B–100

19

INSPECT ATTACHED ACCESSORIES ON FUEL 
TANK

Remove fuel tank and visually inspect for 
damage, insufficient sealing or poorly attached 
accessories on fuel tank, such as fuel gauge.

Is it okay?

Yes Go to next step.

No

Repair or replace fuel tank or sealing, then go to Step 27.

20

INSPECT FUEL SHUT-OFF VALVE

Inspect fuel shut-off valve for ventilation.
(See 01–14–13 FUEL TANK INSPECTION.)

Is it okay?

Yes Go to next step.

No

Replace fuel tank, then go to Step 27.

21

INSPECT ROLLOVER VALVE

Inspect rollover valve for ventilation.

Is it okay?

Yes Inspect following and repair or replace for detached, 

incorrectly installed or cracked hoses:

Charcoal canister

Fuel tank (include fuel shut-off valve and rollover valve)

Fuel tank pressure sensor

Then go to Step 27.

No

Replace fuel tank, then go to Step 27.

22

INSPECT LEAKAGE FROM CHARCOAL 
CANISTER TO PURGE SOLENOID VALVE

Implement “01-03B ENGINE CONTROL 
SYSTEM OPERATION INSPECTION [FS], 
Evaporative Leak System Inspection Using 
Vacuum Pump, Inspection from charcoal 
canister to purge solenoid valve”.
(See 01–03B–55 Inspection from charcoal 
canister to purge solenoid valve.)

Does voltage change under to specified 
readings and hold for a minimum of 2 
minutes
?

Yes Go to Step 27.

No

Go to next step.

23

INSPECT CATCH TANK

Remove catch tank and inspect for plugging, 
damages and pinhole using vacuum pump.

Is it okay?

Yes Go to next step.

No

Replace catch tank, then go to Step 27.

24

INSPECT PURGE SOLENOID VALVE 
OPERATION

Inspect purge solenoid valve
(See 01–16–12 PURGE SOLENOID VALVE 
INSPECTION.)

Is purge solenoid valve okay?

Yes Go to next step.

No

Replace purge solenoid valve, then go to Step 27.

25

INSPECT CHARCOAL CANISTER

Remove charcoal canister and inspect for 
plugging, damage and pinhole.

Is it okay?

Yes Go to next step.

No

Replace charcoal canister, then go to Step 27.

26

INSPECT CDCV OPERATION

Inspect CDCV.
(See 01–16–10 CANISTER DRAIN CUT 
VALVE (CDCV) INSPECTION.)

Is CDCV okay?

Yes Go to next step.

No

Replace CDCV, then go to next step.

27

DECIDE ON AFTER REPAIR PROCEDURE 
ACCORDING TO REPAIR SHOP CONDITION

Clear DTC from memory using WDS or 
equivalent.

Is repair shop possible to perform Drive Mode 
4?

Yes Go to next step.

No

Go to step 31.

STEP

INSPECTION

ACTION

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ON-BOARD DIAGNOSTIC [ENGINE CONTROL SYSTEM (FS)]

01–02B–101

01–02B

End Of Sie

28

VERIFY MONITORING CONDITION FOR 
EVAPORATIVE SYSTEM TEST OR DRIVE 
MODE 4

Turn ignition key to ON (Engine OFF).

Verify that following conditions are met.
— Barometric pressure: 69.7 kPa {523 mmHg, 

20.5 inHg} or higher

— Engine coolant temperature: –10.0—22.0 

°°°°

C {14.0—71.6 

°°°°

F} [at barometric pressure 

69.7 kPa {523 mmHg, 20.5 inHg}]

— Intake air temperature: –10—60 

°°°°

C {50—

140 

°°°°

F}

— Fuel tank level: 35—85%

Is there any conditions that is out of 
specification?

Yes Take corrective action (e.g. cool down engine), then repeat 

this step.

Note

Readings need to be in the indicated ranges to 
perform Drive Mode.

No

Go to next step.

29

MONITOR EVAP SYSTEM BY DRIVE MODE 4

Run OBD-II Drive Mode 4.
(See 01–02B–12 Mode 4 (EVAP system repair 
verification drive mode).)

Stop vehicle and access ON BOARD SYSTEM 
READINESS TESTS to inspect Drive Mode 
completion status.

Has EVAPORATIVE PURGE SYSTEM been 
monitored?

Yes Go to next step.

No

Go back to Step 28.

30

VERIFY EVAP SYSTEM REPAIRED

Access DIAGNOSTIC MONITORING TEST 
RESULTS.

Verify TEST ID 10:22:00 value.
(See 01–02B–9 Diagnostic Monitoring Test 
Results Access Procedure.)

Is it below maximum value?

Yes Go to Step 32.

No

Replace PCM, then go to Step 32.

31

INSPECT WHOLE EVAP CONTROL SYSTEM

Implement “01-03B ENGINE CONTROL 
SYSTEM OPERATION INSPECTION [FS], 
Evaporative System Leak Inspection Using 
Vacuum Pump, Whole system inspection”.
(See 01–03B–55 Whole system inspection.)

Does voltage change under to specified 
readings and hold for minimum of 2 minutes?

Yes Go to Step 32.

No

Replace PCM, then go to Step 32.

32

VERIFY AFTER REPAIR PROCEDURE

Perform “After Repair Procedure”.
(See 01–02B–9 AFTER REPAIR 
PROCEDURE [FS].)

Is there any DTC present?

Yes Go to applicable DTC inspection.

(See 01–02B–15 DTC TABLE [FS].)

No

Troubleshooting completed.

STEP

INSPECTION

ACTION

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ON-BOARD DIAGNOSTIC [ENGINE CONTROL SYSTEM (FS)]

01–02B–102

DTC P0456 [FS]

A3U010201086W10

Diagnostic procedure

DTC P0456

Evaporative emission control system leak detected (very small leak)

DETECTION 

CONDITION

PCM measures the fuel tank pressure ftp a and ftp b when monitoring conditions are met. If the difference 
between ftp a and ftp b exceeds the threshold, PCM determines that EVAP system has a very small leak 
(0.5 mm {0.02 in} hole equivalent).

MONITORING CONDITION

— ECT at engine start 35 

°°°°

C {95 

°°°°

F} or below

— ECT 70—108 

°°°°

C {158—226 

°°°°

F}

— Atmospheric pressure: above 69.7 kPa {523 mmHg, 20.5 inHg}
— Remaining fuel 35%—85%
— IAT -10—60 

°°°°

C {14—140 

°°°°

F}

— Throttle opening angle closed
— 16 minutes or less after engine start

Diagnostic support note

This is an intermittent monitor (Evaporative leak monitor).

MIL illuminates if PCM detects the above malfunction condition in two consecutive drive cycles.

PENDING CODE are stored if PCM detects the above malfunction condition during first drive cycle.

DIAGNOSTIC MONITORING TEST RESULTS is available.

FREEZE FRAME DATA is available.

DTC is stored in the PCM memory.

POSSIBLE 

CAUSE

Purge solenoid valve malfunction

Canister drain cut valve (CDCV) malfunction

Charcoal canister malfunction

Catch tank malfunction

Fuel cap malfunction

Fuel tank malfunction

Fuel pump unit poor seal

EVAP hose damaged or loose

EVAP pipe damaged

STEP

INSPECTION

ACTION

1

VERIFY FREEZE FRAME DATA HAS BEEN 
RECORDED

Has FREEZE FRAME PID DATA been 
recorded?

Yes Go to next step.

No

Record FREEZE FRAME PID DATA on repair order, then 
go to next step.

2

VERIFY RELATED REPAIR INFORMATION 
AVAILABILITY

Check for related Service Bulletins and/or on-
line repair information availability.

Is any related repair information available?

Yes Perform repair or diagnosis according to available repair 

information.

If vehicle is not repaired, go to next step.

No

Go to next step.

3

VERIFY RELATED PENDING CODE OR 
STORED DTC

Turn ignition key to OFF then ON (Engine 
OFF).

Verify related pending code or stored DTC.

Is other DTC present?

Yes Go to appropriate DTC inspection.

No

Go to next step.

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ON-BOARD DIAGNOSTIC [ENGINE CONTROL SYSTEM (FS)]

01–02B–103

01–02B

4

CLASSIFY INTERMITTENT CONCERN OR 
CONTINUOUS CONCERN

Perform evaporative system leak inspection.
(See 01–03B–54 Evaporative System Leak 
Inspection Using Leak Tester.)

Is test result failed (red light turns on)?

Yes Go to next step.

No

Intermittent concern existing. Inspect purge solenoid valve 
and CDCV circuit for intermittent concern.
(See 01–03B–4 INTERMITTENT CONCERN 
TROUBLESHOOTING [FS].)

5

LOCATE LEAK POINT

Check leakage for the following using 
Ultrasonic leak detector.
— Charcoal canister
— Catch tank
— Fuel cap
— EVAP hoses and pipes
— Fuel tank

Is leakage found?

Yes Repair leakage or replace part, then go to Step 10.

No

Go to next step.

6

INSPECT PURGE SOLENOID VALVE

Disconnect purge solenoid valve tube that is 
connected to intake manifold.

Connect vacuum pump to purge solenoid 
valve.

Apply vacuum and wait for 5 seconds.

Is vacuum maintained?

Yes Go to next step.

No

Replace purge solenoid valve, then go to Step 10.

7

INSPECT CDCV

Connect all disconnected connectors and 
hoses.

Place clamp on CDCV hose between CDCV 
and air filter.

Perform evaporative system leak inspection.
(See 01–03B–54 Evaporative System Leak 
Inspection Using Leak Tester.)

Is test result failed (red light turns on)?

Yes Go to Step 10.

No

Go to next step.

8

CONFIRM CDCV LEAKAGE

Remove clamp.

Perform evaporative system leak inspection.
(See 01–03B–54 Evaporative System Leak 
Inspection Using Leak Tester.)

Is test result failed (red light turns on)?

Yes Replace CDCV, then go to Step 11.

No

Go to Step 11.

9

INSPECT FUEL PUMP UNIT INSTALLATION

Remove fuel tank.

Visually inspect for damage, insufficient 
sealing or poorly installed fuel pump unit.

Is it okay?

Yes Go to next step.

No

Repair or replace fuel tank or sealing, then go to next step.

10

PERFORM LEAK INSPECTION

Connect all disconnected connectors and 
hoses.

Perform evaporative system leak inspection.
(See 01–03B–54 Evaporative System Leak 
Inspection Using Leak Tester.)

Is test result failed (red light turns on)?

Yes Leakage still exists. Locate leak point and repair.

Then go to next step.

No

Go to next step.

11

VERIFY MONITORING CONDITION FOR 
EVAPORATIVE SYSTEM TEST OR DRIVE 
MODE 5

Turn ignition key to ON (Engine OFF).

Access ECT and FTL V PIDs using NGS 
tester.
— ECT: 35 

°°°°

C {95 

°°°°

F} or below

— FTL V: 1.3 V—3.75 V (35—85% fuel tank 

level equivalent)

— IAT: -10—60 

°°°°

C {14—140 

°°°°

F}

Note

All PIDs must be within specification to 
start monitor.

Is there any PID that is out of specification?

Yes Cool down engine with fan or adjust fuel level, then go to 

next step.

No

Go to next step.

STEP

INSPECTION

ACTION

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