Mazda 6. Manual — part 26
F–40
ON-BOARD DIAGNOSTIC
OUTLINE
A6E397018881T01
•
The construction and operation of the on-board diagnostic system is essentially carried over from that of the
current MPV (LW) GY/FS engine model, except for the following. (See MPV Workshop Manual supplement
1700-1*-00H.)
— DTCs, PID monitoring items, and simulation items have been changed to match the regulations. For the
detail information of the regulations, refer to the “OBD Training Manual (3345-1E-00B).”
— KOEO/KOER self-test function has been adopted. Therefore, the present malfunction or a successful
repair is readily confirmed.
— Pending code storage process has been changed as follows.
1 drive cycle type
•
With the current MPV (LW) GY/FS engine model, pending codes are not available. With the new
Mazda6 (GG), however, pending code is stored in the PCM during the drive cycle
2 drive cycle type
•
With the current MPV (LW) GY/FS engine model, pending codes are deleted when a DTC is stored.
With the new Mazda6 (GG), however, even if a DTC is stored, the PCM does not delete the pending
code until a normal (malfunction repaired) condition judgement is made.
— The conditions by which the MIL for the second drive cycle type illuminates have been changed as follows.
New Mazda6 (GG)
•
PCM determines that there is a malfunction in the first drive cycle when a DTC that has been stored in
the PCM during previous drive cycles is detected.
Current MPV (LW) GY/FS engine model
•
PCM determines that there is a malfunction in the second drive cycle.
End Of Sie
CONTROL DEVICES AND MONITORING SYSTEM RELATIONSHIP CHART
A6E397018881T02
Monitoring System
×
: Applicable
End Of Sie
ON-BOARD DIAGNOSTIC
Component
Monitor item
Catalyst
Misfire
Fuel system
Oxygen sensor
Oxygen sensor
heater
Input
CKP sensor
×
×
×
×
×
CMP sensor
×
×
×
×
×
VSS
×
×
×
MAF sensor
×
×
×
×
×
ECT sensor
×
×
×
×
×
IAT sensor
×
×
×
×
TP sensor
×
×
×
×
Rear HO2S
×
×
×
Front HO2S
×
×
×
×
Output
DLC-2
×
×
×
×
×
MIL
×
×
×
×
×
Purge solenoid valve
×
×
Fuel injectors
×
ON-BOARD DIAGNOSTIC
F–41
F
DIAGNOSTIC TEST MODE
A6E397018881T03
•
To match the OBD regulations, the following diagnostic test modes have been supported.
•
The diagnostic test modes are as shown below.
Sending Diagnostic Data (Mode 01)
PID data monitor
•
The PID monitoring items are shown in the table.
PID data monitor table
Meaning of FUEL SYS1
On-board system readiness test
•
The items supported by the on-board system readiness test are shown below.
Continuous monitoring system
— Misfire monitoring
— Fuel system monitoring
— Comprehensive component monitoring (CCM)
Intermittent monitoring system
— Catalyst monitoring
— O2S monitoring
— O2S heater monitoring
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 (Diagnostic trouble code: DTC)
Mode 04
Clearing/resetting emission-related malfunction information
Mode 05
Sending oxygen sensor monitor test results
Mode 06
Sending intermittent monitoring system test results (Diagnostic monitoring test result: DMTR)
Mode 07
Sending continuous monitoring system test results (pending code)
Full names
Condition/unit
Diagnostic trouble code counter
–
Malfunction indicator
ON/OFF
Fuel system loop status
Refer to table below.
Engine load calculated value
%
Engine coolant temperature
°
C
°
F
Short fuel trim
%
Long fuel trim
%
Intake manifold absolute pressure
%
kPa
Engine speed
rpm
Vehicle speed
km/h
mph
Spark advance
BTDC
Intake air temperature
°
C
°
F
Mass air flow
g/s
Throttle position
%
Oxygen sensor location
–
Front heated oxygen sensor
V
Rear heated oxygen sensor
V
OBD requirement to which vehicle designed
–
Distance travelled while MI is activated
km
miles
Display
Meaning
-NA-
Not applicable
OPEN
Feedback stops: Engine coolant temperature is lower than the determined feedback zone.
CLOSE
Feedback operating: HO2S being used for feedback is okay.
OP DRV
Feedback stops: Open loop due to driving condition.
OP SYS
Feedback stops: Open loop due to detected system fault.
CL O2S
Feedback operating: Malfunction occurred in HO2S (rear) system.
F–42
ON-BOARD DIAGNOSTIC
Sending Freeze Frame Data (FFD) (Mode 02)
•
The FFDs are shown in the table.
FFD monitor table
Sending Emission-related Malfunction code (DTC) (Mode 03)
•
The DTCs are shown in the table.
DTC table
×
: Applicable
—: Not applicable
Full names
Condition/unit
DTC that caused required FFD storage
–
Fuel system loop status
OPEN: NON-F/B, CLOSE: F/B
Engine load calculated value
%
Engine coolant temperature
°
C
°
F
Short fuel trim
%
Long fuel trim
%
Intake manifold absolute pressure
%
kPa
Engine speed
rpm
Vehicle speed
km/h
mph
Spark advance
BTDC
Intake air temperature
°
C
°
F
Mass air flow
g/s
Throttle position
%
DTC No.
Condition
MIL
DC
Monitor item
Memory
function
P0010
CMP actuator circuit malfunction
ON
1
CCM
×
P0011
CMP timing over-advanced
ON
1
CCM
×
P0012
CMP timing over-retarded
ON
1
CCM
×
P0031
Front HO2S heater circuit low input
ON
2
O
2
sensor heater
×
P0032
Front HO2S heater circuit high input
ON
2
O
2
sensor heater
×
P0037
Rear HO2S heater circuit low input
ON
2
O
2
sensor heater
×
P0038
Rear HO2S heater circuit high input
ON
2
O
2
sensor heater
×
P0101
MAF sensor inconsistent with TP sensor
ON
2
CCM
×
P0102
MAF circuit low input
ON
1
CCM
×
P0103
MAF circuit high input
ON
1
CCM
×
P0107
MAP sensor circuit low input
ON
1
CCM
×
P0108
MAP sensor circuit high input
ON
1
CCM
×
P0111
IAT circuit performance problem
ON
2
CCM
×
P0112
IAT circuit low input
ON
1
CCM
×
P0113
IAT circuit high input
ON
1
CCM
×
P0117
ECT circuit low input
ON
1
CCM
×
P0118
ECT circuit high input
ON
1
CCM
×
P0121
TP stuck closed
ON
2
CCM
×
P0122
TP circuit low input
ON
1
CCM
×
P0123
TP circuit high input
ON
1
CCM
×
P0125
Excessive time to enter closed loop fuel control
ON
2
CCM
×
P0131
Front HO2S no inversion (stuck low)
ON
2
CCM
×
P0132
Front HO2S no inversion (stuck high)
ON
2
CCM
×
P0133
Front HO2S circuit malfunction
ON
2
O
2
sensor
×
P0134
Front HO2S circuit no activity detected
ON
2
CCM
×
P0138
Rear HO2S circuit high input
ON
2
CCM
×
P0140
Rear HO2S circuit no activity detected
ON
2
CCM
×
P0171
Fuel trim system too lean
ON
2
Fuel
×
P0172
Fuel trim system too rich
ON
2
Fuel
×
P0300
Random misfire detected
Flash / ON
1 or 2
Misfire
×
P0301
Cylinder No.1 misfire detected
Flash / ON
1 or 2
Misfire
×
P0302
Cylinder No.2 misfire detected
Flash / ON
1 or 2
Misfire
×
ON-BOARD DIAGNOSTIC
F–43
F
P0303
Cylinder No.3 misfire detected
Flash / ON
1 or 2
Misfire
×
P0304
Cylinder No.4 misfire detected
Flash / ON
1 or 2
Misfire
×
P0327
Knock sensor circuit low input
ON
1
CCM
×
P0328
Knock sensor circuit high input
ON
1
CCM
×
P0335
CKP sensor circuit malfunction
ON
1
CCM
×
P0340
CMP sensor circuit malfunction
ON
1
CCM
×
P0403
EGR valve motor coils open or short
ON
2
CCM
×
P0420
Catalyst system efficiency below threshold
ON
2
Catalyst
×
P0443
Evaporative emission control system purge control
valve circuit malfunction
ON
2
CCM
×
P0480
Fan relay control circuit malfunction
OFF
2
Other
×
P0500
Vehicle speed sensor (VSS) circuit malfunction
ON
2
CCM
×
P0505
Idle control system malfunction
OFF
—
Other
—
P0506
Idle control system RPM lower than expected
ON
2
CCM
×
P0507
Idle control system RPM higher than expected
ON
2
CCM
×
P0511
Idle control system circuit malfunction
ON
1
CCM
×
P0550
PSP switch circuit malfunction
ON
2
CCM
×
P0602
PCM programming error
ON
1
CCM
×
P0610
Control module vehicle options error
ON
1
CCM
×
P0661
VIS control circuit low input
OFF
2
Other
×
P0662
VIS control circuit high input
OFF
2
Other
×
P0703
Brake switch input malfunction
ON
2
CCM
×
P0704
Clutch switch input malfunction
ON
2
CCM
×
P0850
Neutral switch input malfunction
ON
2
CCM
×
P1410
Variable air duct valve circuit malfunction
OFF
2
Other
×
P1562
PCM +BB voltage low
ON
1
CCM
×
P2006
Variable tumble control system shutter valve stuck
closed
ON
2
CCM
×
P2009
Variable tumble control solenoid valve circuit low
input
ON
2
CCM
×
P2010
Variable tumble control solenoid valve circuit high
input
ON
2
CCM
×
P2228
BARO sensor circuit low input
ON
1
CCM
×
P2229
BARO sensor circuit high input
ON
1
CCM
×
P2502
Generator output voltage signal no electricity
OFF
1
Other
—
P2503
Battery overcharge
OFF
1
Other
—
P2504
Generator terminal B circuit open
OFF
1
Other
—
U0073
CAN bus off
OFF
1
Other
—
U0121
PCM cannot receive any signals from ABS, ABS/TCS
or DSC HU/CM
ON
1
Other
×
U0155
PCM cannot receive any signals from instrument
cluster
ON
1
Other
×
DTC No.
Condition
MIL
DC
Monitor item
Memory
function
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