ON-BOARD DIAGNOSTIC SYSTEM TEST MODE [LF, L3]

id0102a3100200

•  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 06
Sending intermittent monitoring system test results (DMTR)
Mode 07
Sending continuous monitoring system test results (pending code)
Mode 09
Request vehicle information


Sending Diagnostic Data (Mode 01)


PID data monitor

•  The PID data monitor items are shown below.

PID data monitor table

Support item

Unit
Monitor status since DTCs cleared
No unit
Fuel system loop status
Refer to list below.
LOAD
%
ECT
°C
°F
Short term fuel trim
%
Long term fuel trim
%
MAP
kPa
Engine speed
rpm
Vehicle speed
km/h
mph
Spark advance
°
IAT
°C
°F
MAF
g/s
Absolute TP
%
A/F sensor, HO2S location
No unit
Input voltage from A/F sensor
V
Input voltage from HO2S
V
OBD requirement according to vehicle design
No unit
Time since engine start
s
Distance travelled while MIL is activated
km
miles
EGR valve control signal
%
Purge solenoid valve control signal
%
Number of warm-ups since DTCs cleared
No unit
Distance travelled since DTCs cleared
km
miles
BARO
kPa
Estimated catalyst converter temperature
°C
°F
Monitor status this DC
No unit
PCM voltage
V
Absolute load value
%
Commanded equivalence ratio
No unit
Relative TP
%

Meaning of fuel system loop status
•  The following information is displayed on the tester.
―  Feedback stops: ECT is lower than the determined feedback zone.
―  Feedback operating: A/F sensor, HO2S being used for feedback is normal.
―  Feedback stops: Open loop due to driving condition
―  Feedback stops: Open loop due to detected system fault
―  Feedback operating: Malfunction occurred in HO2S system


On-board system readiness test

•  The items supported by the on-board system readiness test are shown below.
Continuous monitoring system
―  A/F sensor heater
―  HO2S heater
―  Fuel system
―  Misfire
―  CCM
Intermittent monitoring system
―  A/F sensor
―  HO2S
―  Catalyst


Sending Freeze Frame Data (Mode 02)

•  The Freeze Frame Data monitor items are shown below.

Freeze Frame Data monitor table

Support item

Unit
DTC that caused required Freeze Frame Data storage
No unit
Fuel system loop status
Refer to list below.
LOAD
%
ECT
°C
°F
Short term fuel trim
%
Long term fuel trim
%
MAP
kPa
Engine speed
rpm
Vehicle speed
km/h
mph
Spark advance
°
IAT
°C
°F
MAF
g/s
Absolute TP
%
Time since engine start
s
EGR valve control signal
%
Purge solenoid valve control signal
%
Number of warm-ups since DTCs cleared
No unit
Distance travelled since DTCs cleared
km
miles
BARO
kPa
Estimated catalyst converter temperature
°C
°F
PCM voltage
V
Absolute load value
%
Commanded equivalence ratio
No unit
Relative TP
%

Meaning of fuel system loop status
•  The following information is displayed on the tester.
―  Feedback stops: ECT is lower than the determined feedback zone.
―  Feedback operating: A/F sensor, HO2S being used for feedback is normal.
―  Feedback stops: Open loop due to driving condition
―  Feedback stops: Open loop due to detected system fault
―  Feedback operating: Malfunction occurred in HO2S system

Sending Emission-related Malfunction Code (Mode 03)

•  The DTCs are shown below.

DTC table

×: Applicable
—: Not applicable

DTC No.

Condition

MIL

DC

Monitor item

Memory function
B1342
PCM malfunction
OFF
— 
Other
×
P0011
CMP timing over-advanced
ON
1
CCM
×
P0012
CMP timing over-retarded
ON
2
CCM
×
P0030
A/F sensor heater control circuit problem
ON
2
A/F sensor heater, HO2S heater
×
P0031
A/F sensor heater circuit low input
ON
2
A/F sensor heater, HO2S heater
×
P0032
A/F sensor heater circuit high input
ON
2
A/F sensor heater, HO2S heater
×
P0037
HO2S heater circuit low input
ON
2
A/F sensor heater, HO2S heater
×
P0038
HO2S heater circuit high input
ON
2
A/F sensor heater, HO2S heater
×
P0069
Manifold absolute pressure/atmospheric pressure correlation
ON
2
CCM
×
P0101
MAF sensor circuit range/performance problem
ON
2
CCM
×
P0102
MAF sensor circuit low input
ON
1
CCM
×
P0103
MAF sensor 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 sensor circuit range/performance problem
ON
2
CCM
×
P0112
IAT sensor circuit low input
ON
1
CCM
×
P0113
IAT sensor circuit high input
ON
1
CCM
×
P0117
ECT sensor circuit low input
ON
1
Engine cooling system
×
P0118
ECT sensor circuit high input
ON
1
Engine cooling system
×
P0122
TP sensor circuit low input
ON
1
CCM
×
P0123
TP sensor circuit high input
ON
1
CCM
×
P0125
Excessive time to enter closed loop fuel control
ON
2
Engine cooling system
×
P0131
A/F sensor circuit low input
ON
2
A/F sensor, HO2S
×
P0132
A/F sensor circuit high input
ON
2
A/F sensor, HO2S
×
P0133
A/F sensor circuit problem
ON
2
A/F sensor, HO2S
×
P0134
A/F sensor no activity detected
ON
2
A/F sensor, HO2S
×
P0137
HO2S circuit low input
ON
2
A/F sensor, HO2S
×
P0138
HO2S circuit high input
ON
2
A/F sensor, HO2S
×
P0140
HO2S no activity detected
ON
2
A/F sensor, HO2S
×
P0222
TP sensor No.2 circuit low input
ON
1
CCM
×
P0223
TP sensor No.2 circuit high input
ON
1
CCM
×
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
×
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
KS circuit low input
ON
1
CCM
×
P0328
KS circuit high input
ON
1
CCM
×
P0335
CKP sensor circuit problem
ON
1
CCM
×
P0340
CMP sensor circuit problem
ON
1
CCM
×
P0403
EGR valve (stepper motor) circuit problem
ON
2
CCM
×
P0421
Warm up catalyst system efficiency below threshold
ON
2
Catalyst
×
P0443
Purge solenoid valve circuit problem
ON
2
CCM
×
P0480
Cooling fan control circuit problem
OFF
1
Other
×
P0500
VSS circuit problem
ON
2
CCM
×
P0505
IAC system problem
OFF
— 
Other
— 
P0506
Idle control system RPM lower than expected
ON
2
CCM
×
P0507
Idle control system RPM higher than expected
ON
2
CCM
×
P0564
Cruise control switch circuit malfunction
OFF
1
Other
×
P0571
Brake switch circuit problem
OFF
1
Other
×
P0601
PCM memory check sum error
ON
1
CCM
×
P0602
PCM programming error
ON
1
CCM
×
P0604
PCM RAM error
ON
1
CCM
×
P0606
ECM/PCM processor
ON
1
CCM
×
P0607
PCM performance problem
OFF
1
Other
×
P0610
PCM vehicle options error
ON
1
CCM
×
P0638
Throttle actuator control range/performance problem
ON
1
CCM
×
P0661
Variable intake-air solenoid valve circuit low input
OFF
1
Other
×
P0662
Variable intake-air solenoid valve circuit high input
OFF
1
Other
×
P0703
Brake switch input circuit problem
ON
2
CCM
×
P0704
CPP switch input circuit problem
ON
2
CCM
×
P0850
Neutral switch input circuit problem
ON
2
CCM
×
P1260
Immobilizer system problem
OFF
1
Other
— 
P2009
Variable tumble solenoid valve circuit low input
ON
2
CCM
×
P2010
Variable tumble solenoid valve circuit high input
ON
2
CCM
×
P2088
Oil control valve (OCV) circuit low
ON
1
CCM
×
P2089
Oil control valve (OCV) circuit high
ON
1
CCM
×
P2096
Target A/F feedback system too lean
ON
2
Fuel system
×
P2097
Target A/F feedback system too rich
ON
2
Fuel system
×
P2100
Throttle actuator circuit open
ON
1
CCM
×
P2101
Throttle actuator circuit range/performance
ON
1
CCM
×
P2102
Throttle actuator circuit low input
ON
1
CCM
×
P2103
Throttle actuator circuit high input
ON
1
CCM
×
P2107
Throttle actuator control module processor error
ON
1
CCM
×
P2108
Throttle actuator control module performance error
ON
1
CCM
×
P2119
Throttle actuator control throttle body range/performance problem
ON
1
CCM
×
P2122
Accelerator pedal position (APP) sensor No.1 circuit low input
ON
1
CCM
×
P2123
Accelerator pedal position (APP) sensor No.1 circuit high input
ON
1
CCM
×
P2126
Accelerator pedal position (APP) sensor No.2 circuit range/performance problem
ON
1
CCM
×
P2127
Accelerator pedal position (APP) sensor No.2 circuit low input
ON
1
CCM
×
P2128
Accelerator pedal position (APP) sensor No.2 circuit high input
ON
1
CCM
×
P2135
Throttle position sensor No.1/No.2 voltage problem
ON
1
CCM
×
P2138
Accelerator pedal position (APP) sensor No.1/No.2 voltage problem
ON
1
CCM
×
P2177
Fuel system too lean at off idle
ON
2
Fuel system
×
P2178
Fuel system too rich at off idle
ON
2
Fuel system
×
P2187
Fuel system too lean at idle
ON
2
Fuel system
×
P2188
Fuel system too rich at idle
ON
2
Fuel system
×
P2195
A/F sensor signal stuck lean
ON
2
A/F sensor, HO2S
×
P2196
A/F sensor signal stuck rich
ON
2
A/F sensor, HO2S
×
P2228
BARO sensor circuit low input
ON
1
CCM
×
P2229
BARO sensor circuit high input
ON
1
CCM
×
P2237
A/F sensor positive current control circuit open
ON
2
A/F sensor, HO2S
×
P2251
A/F sensor negative current control circuit open
ON
2
A/F sensor, HO2S
×
P2502
Charging system voltage problem
OFF
1
Other
×
P2503
Charging system voltage low
OFF
1
Other
×
P2504
Charging system voltage high
OFF
1
Other
×
P2507
PCM B+ voltage low
ON
1
CCM
×


Sending Continuous Monitoring System Test Results (Mode 07)

•  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 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.


DLC-2 Outline

•  The DLC-2 located in the driver compartment is a service connector defined by EOBD regulations.
•  The following are functions for each terminal.
am3zzn00000908

Terminal name

Function
B+
Battery positive voltage
CAN_H (HS)
CAN communication line (HS)
CAN_L (HS)
CAN communication line (HS)
GND1
Ground (chassis)
GND2
Ground (signal)
CAN_H (MS)
CAN communication line (MS)
CAN_L (MS)
CAN communication line (MS)