Mazda CX 7. Manual — part 13

ON-BOARD DIAGNOSTIC [L3 WITH TC]

01-02–7

01-02

OBD-II DIAGNOSTIC MONITORING TEST RESULTS[L3 WITH TC]

id010239800700

• These result from the intermittent monitor system technical data, which are used to determine whether the

system is normal or not. They also display the system’s thresholds and diagnostic results. The intermittent
monitor system monitors the oxygen sensor, EVAP purge system, catalyst and the EGR system.

End Of Sie

ON-BOARD DIAGNOSTIC TEST[L3 WITH TC]

id010239801000

DTC Reading Procedure

1. Connect the M-MDS to the DLC-2.
2. After the vehicle is identified, select the following

items from the initial screen of the M-MDS.

• When using the IDS (notebook PC)

1. Select the “Toolbox” tab.
2. Select “Self Test”.
3. Select “Module”.
4. Select “PCM”.

• When using the PDS (pocket PC)

1. Select “Module Tests”.
2. Select “PCM”.
3. Select “Self Test”.

3. Then, select the “Retrieve CMDTCs” and perform

procedures according to directions on the M-MDS
screen.

4. Verify the DTC according to the directions on the M-MDS screen.

• If any DTCs are displayed, perform troubleshooting according to the corresponding DTC inspection.

5. After completion of repairs, clear all DTCs stored in the PCM, while referring to “AFTER REPAIR

PROCEDURE“.

Pending Trouble Code Access Procedure

1. Connect the M-MDS to the DLC-2.
2. After the vehicle is identified, select the following

items from the initial screen of the M-MDS.

• When using the IDS (notebook PC)

1. Select the “Toolbox” tab.
2. Select “Self Test”.
3. Select “Module”.
4. Select “PCM”.

• When using the PDS (pocket PC)

1. Select “Module Tests”.
2. Select “PCM”.
3. Select “Self Test”.

3. Then, select the “Retrieve CMDTCs” and perform

procedures according to directions on the M-MDS
screen.

4. Retrieve the pending trouble codes according to the directions on the M-MDS screen.

Freeze Frame PID Data Access Procedure

1. Connect the M-MDS to the DLC-2.
2. After the vehicle is identified, select the following

items from the initial screen of the M-MDS.

• When using the IDS (notebook PC)

1. Select the “Toolbox” tab.
2. Select “Self Test”.
3. Select “Module”.
4. Select “PCM”.

• When using the PDS (pocket PC)

1. Select “Module Tests”.
2. Select “PCM”.
3. Select “Self Test”.

3. Then, select the “Retrieve CMDTCs” and perform

procedures according to directions on the M-MDS
screen.

4. Retrieve the freeze frame PID data according to the directions on the M-MDS screen.

DLC-2

acxuuw00001891

DLC-2

acxuuw00001891

DLC-2

acxuuw00001891

1871-1U-06B(01-02).fm 7 ページ ２００６年３月１５日 水曜日 午前１０時３２分

ON-BOARD DIAGNOSTIC [L3 WITH TC]

01-02–8

On-Board System Readiness Tests Access Procedure

1. Connect the M-MDS to the DLC-2.
2. After the vehicle is identified, select the following

items from the initial screen of the M-MDS.

• When using the IDS (notebook PC)

1. Select the “Toolbox” tab.
2. Select “Powertrain”.
3. Select “OBD Test Modes”.
4. Select “Mode 1 Powertrain Data”.

• When using the PDS (pocket PC)

1. Select “OBD II Modes”.
2. Select “Mode 1 Powertrain Data”.

3. Then, select the “***SUP” and “***EVAL” PIDs in

the PID selection screen.

4. Monitor those PIDs and check it system monitor is

completed.

PID/DATA Monitor and Record Procedure

Note

• The PID/DATA MONITOR function monitors the calculated value of the input/output signals in the PCM.

Therefore, an output device malfunction is not directly indicated as a malfunction of the monitored value
for the output device. If a monitored value of an output device is out of specification, inspect the monitored
value of the input device related to the output control.

1. Connect the M-MDS to the DLC-2.
2. After the vehicle is identified, select the following

items from the initial screen of the M-MDS.

• When using the IDS (notebook PC)

1. Select the “Toolbox” tab.
2. Select “DataLogger”.
3. Select “Module”.
4. Select “PCM”.

• When using the PDS (pocket PC)

1. Select “Module Tests”.
2. Select “PCM”.
3. Select “DataLogger”.

3. Select the PID from the PID table.
4. Verify the PID data according to the directions on

the screen.

Diagnostic Monitoring Test Results Access Procedure

1. Connect the M-MDS to the DLC-2.
2. After the vehicle is identified, select the following

items from the initial screen of the M-MDS.

• When using the IDS (notebook PC)

1. Select the “Toolbox” tab.
2. Select “Powertrain”.
3. Select “OBD Test Modes”.
4. Select “Mode 6 On-Board Test Results”.

• When using the PDS (pocket PC)

1. Select “OBD II Modes”.
2. Select “Mode 6 On-Board Test Results”.

3. Verify the diagnostic monitoring test result

according to the directions on the screen.

DLC-2

acxuuw00001891

DLC-2

acxuuw00001891

DLC-2

acxuuw00001891

1871-1U-06B(01-02).fm 8 ページ ２００６年３月１５日 水曜日 午前１０時３２分

ON-BOARD DIAGNOSTIC [L3 WITH TC]

01-02–9

01-02

Simulation Function Procedure

1. Connect the M-MDS to the DLC-2.
2. After the vehicle is identified, select the following

items from the initial screen of the M-MDS.

• When using the IDS (notebook PC)

1. Select the “Toolbox” tab.
2. Select “DataLogger”.
3. Select “Module”.
4. Select “PCM”.

• When using the PDS (pocket PC)

1. Select “Module Tests”.
2. Select “PCM”.
3. Select “DataLogger”.

3. Select the simulation items from the PID table.
4. Perform the simulation function, inspect the

operations for each parts.

• If there is no operation sound from the relay, motor, and solenoid after the simulation function inspection is

performed, it is possible that there is an open or short circuit in the wiring harness, relay, motor or solenoid,
or sticking and operation malfunction.

End Of Sie

DIAGNOSTIC MONITORING TEST RESULTS[L3 WITH TC]

id010239801400

• The purpose of this test mode is to confirm the result of the OBD-II monitor diagnostic test results. The result

values stored when a particular monitor is completed are displayed. If the monitor is not completed, the initial
value is displayed.

*1

: California emission regulation applicable model

End Of Sie

DLC-2

acxuuw00001891

TEST ID

Description

Related system

10: 01: 80

HO2S (Front) lean-to-rich response time (calculated)

HO2S

10: 02: 03

Low HO2S (Rear) voltage for switch time calculation (constant)

10: 02: 04

High HO2S (Rear) voltage for switch time calculation (constant)

10: 02: 05

HO2S (Rear) rich-to-lean response time (calculated)

10: 21: 80

Front and HO2S (Rear) switching time ratio

Catalyst

10: 31: 83

EGR pressure variation

EGR

10: 3A: 80

EVAP system leak detection pump gross leak check

EVAP

10: 3B: 80

EVAP system leak detection pump small leak check

10: 3C: 80

*1

EVAP system leak detection pump very small leak check

10: 3D: 80

Purge flow monitor

10: A2: 0B

EWMA misfire counts for last 10 driving cycles

Misfire

10: A2: 0C

Misfire counts for last/current driving cycles

10: A3: 0B

EWMA misfire counts for last 10 driving cycles

10: A3: 0C

Misfire counts for last/current driving cycles

10: A4: 0B

EWMA misfire counts for last 10 driving cycles

10: A4: 0C

Misfire counts for last/current driving cycles

10: A5: 0B

EWMA misfire counts for last 10 driving cycles

10: A5: 0C

Misfire counts for last/current driving cycles

10: E1: 80

Heat radiation ratio

Engine cooling

system

10: E1: 81

Misfire counts for last/current driving cycles

1871-1U-06B(01-02).fm 9 ページ ２００６年３月１５日 水曜日 午前１０時３２分

ON-BOARD DIAGNOSTIC [L3 WITH TC]

01-02–10

AFTER REPAIR PROCEDURE[L3 WITH TC]

id010239801100

1. Connect the M-MDS to the DLC-2.
2. Cycle the ignition switch from the off to the ON

position.

3. Any retrieved DTCs.
4. Clear all diagnostic data using the M-MDS.

End Of Sie

KOEO/KOER SELF TEST[L3 WITH TC]

id010239801200

1. Perform the necessary vehicle preparation and visual inspection.
2. Connect the M-MDS to the vehicle DLC-2 16-pin connector located in the driver compartment.
3. Retrieve the KOEO/KOER DTCs using the M-MDS.

End Of Sie

OBD-II DRIVE MODE[L3 WITH TC]

id010239801300

• Using the OBD-II drive mode, the monitoring item requested by OBD-II regulations can be easily diagnosed.

• Performing the Drive Mode inspects the OBD-II system for proper operation and must be performed to ensure

that no additional DTCs are present.

• The OBD-II drive mode is divided into the specific drive mode and single drive mode.

• For the specific drive mode, specified drive modes have been set for each individual monitoring item requested

by OBD-II regulations, and they can be diagnosed individually. For the single drive mode, the entire monitoring
item requested by OBD-II regulations can be diagnosed.

• The following modes are in the specific drive mode. The applicable system is diagnosed by driving in the

following drive modes.

— PCM Adaptive Memory Produce Drive Mode

— EGR System Repair Verification Drive Mode

— HO2S heater, HO2S, and TWC Repair Verification Drive Mode

— EVAP System Repair Verification Drive Mode

• The following systems are diagnosed with the single drive mode.

— 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 M-MDS is used to observe monitor system status while driving, be sure to have another

technician with you, or record the data in the M-MDS 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 M-MDS to monitor vehicle speed.

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

considered:

— The OBD-II system detects the malfunction.

— 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.

• The M-MDS can be used at anytime through the course of the Drive Mode to monitor the completion

status. Monitoring can be done by viewing the ON BOARD SYSTEM READINESS menu.

• The OBD monitoring status can be confirmed with the ignition switch operation. During KOEO, the MIL

illuminates for a fail-light inspection for approx. 17 s. The OBD monitoring status is confirmed after the
fail-light inspection.

— If all of the diagnosis is completed even one time, the MIL will continue to illuminate.

— If all of the diagnosis is not completed, the MIL flashes for approx. 7 s, and then it illuminates until the

engine is started.

DLC-2

acxuuw00001892

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