Mazda MPV Facelift. Manual — part 3

Engine Control

System

(RF)

Service Training

9

Relationship chart

×: Applicable

Relationship Chart

Item

Id

le

s

p

e

e

d

c

o

n

tr

o

l

G

lo

w

c

o

n

tr

o

l

V

S

C

B

o

o

s

t

p

re

s

s

u

re

c

o

n

tr

o

l

F

u

e

l

in

je

c

ti

o

n

a

m

o

u

n

t

c

o

n

tr

o

l

F

u

e

l

in

je

c

ti

o

n

ti

m

in

g

c

o

n

tr

o

l

M

u

lt

ip

le

fu

e

l

in

je

c

ti

o

n

c

o

n

tr

o

l

E

G

R

c

o

n

tr

o

l

E

le

c

tr

ic

a

l

fa

n

c

o

n

tr

o

l

A

/C

c

u

t-

o

ff

c

o

n

tr

o

l

Im

m

o

b

il

iz

e

r

s

y

s

te

m

Battery ×

×

Starter (starter signal)

×

×

×

×

×

×

×

×

×

×

Starter relay

×

×

×

×

×

×

×

×

×

×

Clutch pedal position switch

×

×

×

×

×

×

×

Neutral switch

×

×

×

×

×

×

×

Idle switch

×

×

×

×

×

×

×

A/C switch

×

×

×

×

×

Refrigerant pressure switch

×

×

×

×

×

Accelerator position sensor

×

×

×

×

×

×

×

×

MAF/IAT sensor

×

×

×

×

×

IAT sensor No.2

×

×

ECT sensor

×

×

×

×

×

×

×

×

×

×

Fuel temperature sensor

×

BARO sensor (integrated in PCM)

×

×

×

Boost sensor

×

×

×

×

Fuel pressure sensor

×

×

×

×

CMP sensor

×

×

×

×

×

CKP sensor

×

×

×

×

×

×

×

×

×

ABS HU/CM (CAN signal)

×

×

×

×

×

×

×

Calibration resistor

×

×

Immobilizer unit
EGR valve position sensor

×

Suction control valve

×

IDM ×

×

×

×

VSC solenoid valve

×

VBC solenoid valve

×

EGR control solenoid valve

×

EGR solenoid valve (vacuum)

×

EGR solenoid valve (vent)

×

Intake shutter solenoid valve (half)

×

Intake shutter solenoid valve (full)

×

Glow indicator light

×

Glow plug relay

×

Main fan relay

×

A/C relay

×

Fan control module

×

Input device

Control System (RF)

Engine

10 Service

Training

DLC-2 outline

•

The DLC-2 (Data Link Connector-2) located in the driver compartment is a service

connector defined by EOBD regulations.

DLC-2

1

Not used

9

Not used

2

Not used

10

Not used

3

Not used

11

Not used

4

Chassis ground

12

Not used

5

Signal ground

13

Not used

6

CAN high (+)

14

CAN low (-)

7

ISO 9141 (K line)

15

Not used

8

Not used

16

Battery power supply (B+)

Engine Control

System

(RF)

Service Training

11

On-board diagnostic system

Diagnostic test modes

•

To meet EOBD regulations, the following diagnostic test modes have been adopted:

Diagnostic test mode

Item

Mode 01

Sending diagnostic data (PID data monitor/On-board system readiness test)

Mode 02

Sending freeze frame data

Mode 03

Sending emission-related malfunction code (DTC)

Mode 04

Clearing/resetting emission-related malfunction information

Mode 07

Sending continuous monitoring system test results (pending code)

Mode 09

Request vehicle information

Recording of continuous monitoring system test results

•

These appear when a problem is detected in a monitored system

1-drive cycle type

–

If any problems are detected in the first drive cycle, pending codes will be stored in
the PCM memory, as well as DTCs.

–

After pending codes are stored, if the PCM determines that the system is normal in
any future drive cycle, the PCM deletes the pending codes.

2-drive cycle type

–

The code for a failed system is stored in the PCM memory in the first drive cycle. If
the problem is not found in the second drive cycle, the PCM determines that the
system returned to normal or the problem was mistakenly detected, and deletes the
pending code. If the problem is found in the second drive cycle too, the PCM
determines that the system has failed, and stores the pending codes, and the DTCs.

–

After pending codes are stored, if the PCM determines that the system is normal in
any future drive cycle, the PCM deletes the pending codes.

Control System (RF)

Engine

12 Service

Training

On-board diagnostic system (continued)

OBD drive mode

•

With the addition of system monitors for EOBD, it is now necessary to carry out the OBD
Drive Mode to confirm the absence of the below DTCs:

–

P0101: MAF sensor circuit range/performance problem

–

P0106: Boost sensor circuit range/performance problem

–

P0401: EGR flow insufficient detected

–

P0402: EGR flow excessive detected

–

P0404: EGR valve stuck

–

P2227: BARO sensor circuit range/performance problem

To conduct the OBD Drive Mode:

1. Warm up the engine to normal operating temperature.
2. Verify all accessory loads (A/C, headlights, blower fan, rear window defroster) are off.
3. Drive the vehicle five times in the driving mode indicated in the figure on a road with a

0% gradient.

4. Stop the vehicle.
5. Verify no DTCs are present.

B6E4070W078

1

Time 4

Idle

2

Vehicle Speed

5

Above 35 km/h {21.7 mph} (2

nd

gear)

3

Start Engine

6

Above 50 km/h {31 mph} (3

nd

gear)