Mazda CX 7. Manual - part 73

 

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Mazda CX 7. Manual - part 73

 

 

ON-BOARD DIAGNOSTIC [L3 WITH TC]

01-02–247

01-02

End Of Sie

3

VERIFY RELATED PENDING CODE OR 
STORED DTCS

• Turn the ignition switch to the OFF then ON 

position (Engine off).

• Verify related pending code or stored DTCs.

• Are other DTCs present?

Yes

Go to the next step.

No

Replace the EVAP system leak detection pump, then go to 
step 6. (See 01-16-7 EVAPORATIVE EMISSION (EVAP) 
SYSTEM LEAK DETECTION PUMP REMOVAL/
INSTALLATION[L3 WITH TC])

4

INSPECT EVAP SYSTEM LEAK DETECTION 
PUMP

• Inspect the EVAP system leak detection pump.

(See 01-16-7 EVAPORATIVE EMISSION 
(EVAP) SYSTEM LEAK DETECTION PUMP 
INSPECTION[L3 WITH TC])

• Is the EVAP system leak detection pump 

normal?

Yes

Go to the appropriate DTC inspection.
 (See01-02-13 DTC TABLE[L3 WITH TC].)

No

Go to the next step.

5

CHECK EVAP SYSTEM LEAK DETECTION 
PUMP CIRCUIT FOR SHORT TO POWER 
SUPPLY

• Turn the ignition switch to the ON position.

• Disconnect the EVAP system leak detection 

pump connector.

• Measure the voltage between EVAP system 

leak detection pump terminal D (harness-side) 
and body ground.

• Is the voltage B+?

Yes

Repair or replace the wiring harness, then go to the next 
step.

No

Go to the next step.

6

VERIFY TROUBLESHOOTING OF DTC P2402 
COMPLETED

• Make sure to reconnect all disconnected 

connectors.

• Clear the DTC from the PCM memory using 

the M-MDS.

• Perform the EVAP system test using the M-

MDS.
 (See01-03-78 ENGINE CONTROL SYSTEM 
OPERATION INSPECTION[L3 WITH TC].)

• Is the same DTC present?

Note

• If EVAP system test function is not 

available, take following procedure.

— Start the engine and perform the “EVAP 

System Repair Verification Drive Mode”.

 (See01-02-10 OBD-II DRIVE MODE[L3 

WITH TC].)

— Is the PENDING CODE for this DTC 

present?

Yes

Replace the PCM, then go to the next step.

No

Go to the next step.

7

VERIFY AFTER REPAIR PROCEDURE

• Perform the “After Repair Procedure”.

 (See01-14-4 AFTER REPAIR 
PROCEDURE[L3 WITH TC].)

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.
 (See01-02-13 DTC TABLE[L3 WITH TC].)

No

Troubleshooting completed.

STEP

INSPECTION

ACTION

1871-1U-06B(01-02).fm  247 ページ  2006年3月15日 水曜日 午前10時32分

ON-BOARD DIAGNOSTIC [L3 WITH TC]

01-02–248

DTC P2404[L3 WITH TC]

id010239813700

Diagnostic procedure

End Of Sie

DTC P2404

EVAP system leak detection pump sensor circuit malfunction

DETECTION 

CONDITION

• The PCM monitors the pump load current (EVAP line pressure), while the EVAP leak monitor is operating. 

After obtaining the reference current value, If the pump load current is greater than or equal to the 
reference current value plus 2 mA within the specified time, the PCM determines that the air filter has a 
malfunction.

Diagnostic support note

• This is a intermittent monitor (CCM).

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

one drive cycle while the DTC for the same malfunction has been stored in the PCM.

• PENDING CODE is available if the PCM detects the above malfunction condition during the first drive 

cycle.

• FREEZE FRAME DATA is available.

• DTCs are stored in PCM memory.

POSSIBLE 

CAUSE

• Air filter clogging

• EVAP hose bending

• PCM malfunction

STEP

INSPECTION

ACTION

1

VERIFY FREEZE FRAME DATA HAS BEEN 
RECORDED

• Has the FREEZE FRAME DATA been 

recorded?

Yes

Go to the next step.

No

Record FREEZE FRAME DATA on the repair order, then go 
to the 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 the repair or diagnostic according to the available 
repair information.

• If the vehicle is not repaired, then go to the next step.

No

Go to the next step.

3

CHECK EVAP HOSE BENDING

• Inspect the EVAP hose for bending.

• Is the EVAP hose normal?

Yes

Go to the next step.

No

Repair or replace the suspected hose, then go to Step 5.

4

CHECK AIR FILTER FOR CLOGGING

• Inspect the air filter for clogging.

• Is the air filter normal?

Yes

Go to the next step.

No

Replace the air filter, then go to the next step.

5

VERIFY TROUBLESHOOTING OF DTC P2404 
COMPLETED

• Make sure to reconnect all disconnected 

connectors.

• Clear the DTC from the PCM memory using 

the M-MDS.

• Perform the EVAP system test using the M-

MDS.
 (See01-03-78 ENGINE CONTROL SYSTEM 
OPERATION INSPECTION[L3 WITH TC].)

• Is the same DTC present?

Note

• If EVAP system test function is not 

available, take following procedure.
— Perform the “EVAP System Repair 

Verification Drive Mode”.
 (See01-02-10 OBD-II DRIVE 
MODE[L3 WITH TC].)

— Is the PENDING CODE for this DTC 

present?

Yes

Replace the PCM, then go to the next step.

No

Go to the next step.

6

VERIFY AFTER REPAIR PROCEDURE

• Perform the “After Repair Procedure”.

 (See01-14-4 AFTER REPAIR 
PROCEDURE[L3 WITH TC].)

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.
 (See01-02-13 DTC TABLE[L3 WITH TC].)

No

Troubleshooting completed.

1871-1U-06B(01-02).fm  248 ページ  2006年3月15日 水曜日 午前10時32分

ON-BOARD DIAGNOSTIC [L3 WITH TC]

01-02–249

01-02

DTC P2405[L3 WITH TC]

id010239813800

Diagnostic procedure

End Of Sie

DTC P2405

EVAP system leak detection pump sensor circuit low input

DETECTION 

CONDITION

• The PCM monitors the pump load current (EVAP line pressure), while the EVAP leak monitor is operating. 

If the current is lower than the specification while the PCM obtains the reference current value, the PCM 
determines that the EVAP system leak detection pump orifice has a malfunction.

Diagnostic support note

• This is a intermittent monitor (CCM).

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

one drive cycle while the DTC for the same malfunction has been stored in the PCM.

• PENDING CODE is available if the PCM detects the above malfunction condition during the first drive 

cycle.

• FREEZE FRAME DATA is available.

• DTCs are stored in PCM memory.

POSSIBLE 

CAUSE

• EVAP system leak detection pump orifice has fallen off

• EVAP system leak detection pump motor malfunction

• PCM malfunction

STEP

INSPECTION

ACTION

1

VERIFY FREEZE FRAME DATA HAS BEEN 
RECORDED

• Has the FREEZE FRAME DATA been 

recorded?

Yes

Go to the next step.

No

Record FREEZE FRAME DATA on the repair order, then go 
to the 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 the repair or diagnosis according to the available 
repair information.

• If the vehicle is not repaired, go to the next step.

No

Replace the EVAP system leak detection pump, then go to 
the next step.

3

VERIFY TROUBLESHOOTING OF DTC P2405 
COMPLETED

• Make sure to reconnect all disconnected 

connectors.

• Clear the DTC from the PCM memory using 

the M-MDS.

• Perform the EVAP system test using the M-

MDS.
 (See01-03-78 ENGINE CONTROL SYSTEM 
OPERATION INSPECTION[L3 WITH TC].)

• Is the same DTC present?

Note

• If EVAP system test function is not 

available, take following procedure.

— Start the engine and perform the 

“EVAP System Repair Verification 
Drive Mode”.
 (See01-02-10 OBD-II DRIVE 
MODE[L3 WITH TC].)

— Is the PENDING CODE for this DTC 

present?

Yes

Replace the PCM, then go to the next step.

No

Go to the next step.

4

VERIFY AFTER REPAIR PROCEDURE

• Perform the “After Repair Procedure”.

 (See01-14-4 AFTER REPAIR 
PROCEDURE[L3 WITH TC].)

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.
 (See01-02-13 DTC TABLE[L3 WITH TC].)

No

Troubleshooting completed.

1871-1U-06B(01-02).fm  249 ページ  2006年3月15日 水曜日 午前10時32分

ON-BOARD DIAGNOSTIC [L3 WITH TC]

01-02–250

DTC P2407[L3 WITH TC]

id010239813900

Diagnostic procedure

DTC P2407

EVAP system leak detection pump sensor circuit intermittent

DETECTION 

CONDITION

• The PCM monitors pump the load current (EVAP line pressure), while the EVAP leak monitor is operating. 

When either of the following is detected6 times or more successively, the PCM determines that the 
EVAP system leak detection pump heater has a malfunction:
— While obtaining the reference current value, the change in pump load current exceeds the specification.

— After obtaining the reference current value, the pump load current is kept lower than the maximum pump 

load current for more than the specified time.

Diagnostic support note

• This is a intermittent monitor (CCM).

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

one drive cycle while the DTC for the same malfunction has been stored in the PCM.

• PENDING CODE is available if the PCM detects the above malfunction condition during the first drive 

cycle.

• FREEZE FRAME DATA is available.

• DTCs are stored in PCM memory.

POSSIBLE 

CAUSE

• EVAP system leak detection pump heater malfunction

• PCM malfunction

STEP

INSPECTION

ACTION

1

VERIFY FREEZE FRAME DATA HAS BEEN 
RECORDED

• Has the FREEZE FRAME DATA been 

recorded?

Yes

Go to the next step.

No

Record FREEZE FRAME DATA on the repair order, then go 
to the 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 the repair or diagnosis according to the available 
repair information.

• If the vehicle is not repaired, go to the next step.

No

Go to the next step.

3

INSPECT EVAP SYSTEM LEAK DETECTION 
PUMP HEATER

• Perform the EVAP system leak detection pump 

inspection.
 (See01-16-7 EVAPORATIVE EMISSION 
(EVAP) SYSTEM LEAK DETECTION PUMP 
INSPECTION[L3 WITH TC])

• Is the EVAP system leak detection pump 

normal?

Yes

Replace the EVAP system leak detection pump, then go to 
the next step.

No

Go to the next step.

4

VERIFY TROUBLESHOOTING OF DTC P2407 
COMPLETED

• Make sure to reconnect all disconnected 

connectors.

• Clear the DTC from the PCM memory using 

the M-MDS.

• Perform the EVAP system test using the M-

MDS.
 (See01-03-78 ENGINE CONTROL SYSTEM 
OPERATION INSPECTION[L3 WITH TC].)

• Is the same DTC present?

Note

• If EVAP system test function is not 

available, take following procedure.

— Start the engine and perform the “EVAP 

System Repair Verification Drive Mode”.

 (See01-02-10 OBD-II DRIVE MODE[L3 

WITH TC].)

— Is the PENDING CODE for this DTC 

present?

Yes

Replace the PCM, then go to the next step.

No

Go to the next step.

5

VERIFY AFTER REPAIR PROCEDURE

• Perform the “AFTER REPAIR PROCEDURE”.

 (See01-14-4 AFTER REPAIR 
PROCEDURE[L3 WITH TC].)

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.
 (See01-02-13 DTC TABLE[L3 WITH TC].)

No

Troubleshooting completed.

1871-1U-06B(01-02).fm  250 ページ  2006年3月15日 水曜日 午前10時32分

 

 

 

 

 

 

 

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