Mazda Protege 5. Manual — part 11

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

01–02A–10

Diagnostic Monitoring Test Results Access Procedure

1. Perform the necessary vehicle preparation and visual inspection.
2. Connect WDS or equivalent to the vehicle DLC-2

16-pin connector located on the left side of the
steering column.

3. Access the DIAGNOSTIC MONITORING TEST

RESULTS and read the test results using WDS or
equivalent.

End Of Sie

AFTER REPAIR PROCEDURE [ZM]

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1. Connect WDS or equivalent to the vehicle DLC-2

16-pin connector located on the left side of the
steering clumn.

2. Cycle the ignition key from OFF to ON.
3. Record DTC if retrieved.
4. Erase all diagnostic data using WDS or

equivalent.

End Of Sie

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

01–02A–11

01–02A

OBD-II DRIVE MODE [ZM]

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•

Performing the Drive Mode inspects the OBD-II system for proper operation and must be performed to ensure
that no additional DTCs are present.

•

During Drive Mode, the following systems are inspected:
— EGR system
— Oxygen sensor (HO2S)
— Oxygen sensor heater
— Catalytic converter (TWC)
— Fuel, misfire and evaporative (EVAP) system

Caution

••••

While performing the Drive Mode, always operate the vehicle in a safe and lawful manner.

••••

When the WDS or equivalent is used to observe monitor system status while driving, be sure to
have another technician with you, or record the data in the WDS or equivalent using the PID/DATA
MONITOR AND RECORD function and inspect later.

Note

•

Vehicle speed and engine speed detected by the PCM may differ from that indicated by the speedometer
and tachometer. Use the WDS or equivalent to monitor vehicle speed.

•

If the OBD-II system inspection is not completed during the Drive Mode, the following causes are
considered:

1. The OBD-II system detects the malfunction.
2. The Drive Mode procedure is not completed correctly.

•

Disconnecting the battery will reset the memory. Do not disconnect the battery during and after Drive
Mode.

Mode 1 (PCM adaptive memory procedure drive mode)

1. Start the engine and warm up completely.
2. Verify the following conditions and correct if necessary.

•

All accessory loads (A/C, headlights, blower fan, rear window defroster) are off.

•

Initial ignition timing and idle speed are within specification.

•

TEN and GND of DLC are not connected.

3. Perform no load racing at the engine speed

shown in the graph, then idle the engine for more
than 20 seconds after the cooling fan stopped. If
possible, monitor RPM PID for engine speed and
cooling fan status during this procedure.

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

01–02A–12

Mode 2 (EGR system repair verification drive mode)

1. Perform Mode 1 first.
2. Verify all accessory loads (A/C, headlights, blower fan, rear window defroster) are off.
3. Drive the vehicle as shown in the graph.
4. Stop vehicle and access ON BOARD SYSTEM

READINESS menu of GENERIC OBD II
FUNCTION to inspect the Drive Mode completion
status. If completed, RFC changes from NO to
YES.

5. If not completed, turn the ignition key off then go

back to Step 3.

6. Access DIAGNOSTIC MONITORING TEST

RESULTS menu of GENERIC OBD II
FUNCTIONS to inspect the monitor results. If
MEAS are not within specification, repair has not
been completed.

7. Verify no DTCs are available.

Mode 3 (HO2S heater, HO2S, and TWC repair verification drive mode)

1. Perform Mode 1 first.
2. Verify all accessory loads (A/C, headlights, blower fan, rear window defroster) are off.
3. Drive the vehicle as shown in the graph. Driving

condition before the constant speed driving is not
specified.

4. Stop vehicle and access ON BOARD SYSTEM

READINESS menu of GENERIC OBD II
FUNCTION to inspect the Drive Mode completion
status. If completed, RFC changes from NO to
YES.

5. If not completed, turn the ignition key off then go

back to Step 3.

6. Access DIAGNOSTIC MONITORING TEST

RESULTS menu of GENERIC OBD II
FUNCTIONS to inspect the monitor results. If
MEAS are not within specification, repair has not
been completed.

7. Verify no DTCs are available.

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

01–02A–13

01–02A

Mode 4 (EVAP system repair verification drive mode)

Note

•

If Mode 4 can not be performed (you can not drive the vehicle under Mode 4 condition), perform
evaporative system test procedure as an alternative. (See 01–03A–56 Evaporative System Leak
Inspection Using Vacuum Pump.)

•

Mode 4 can be performed regardless RFC FLAG condition.

1. Verify that the following conditions are met. All conditions must be within specifications before engine is started

to initiate the evaporative system test.

•

Barometric pressure: 72.2 kPa {542 mmHg, 21.3 inHg} or higher

•

Intake air temperature: 10—60

°°°°

C {50—140

°°°°

F}

•

Fuel tank level: 0.5—2.5 V

•

Engine coolant temperature: –10

°°°°

C—X

°°°°

C {14

°°°°

F—X

°°°°

F} (X, the Engine coolant temperature upper limit, is

determined according to the barometric pressure as shown the graph below.)

2. Verify all accessory loads (A/C, headlights, blower fan, rear window defroster) are off.
3. Start the engine and race it at 3,500 rpm to warm up completely.
4. Drive the vehicle as shown in the graph.

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