DIAGNOSTIC TEST MODE [LF, L3]

id0102a3142500

• 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

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
%
O2S location
No unit
Input voltage from front HO2S
V
Input voltage from rear 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: 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 (rear) system

On-board system readiness test

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

Sending Freeze Frame Data

• 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: 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 (rear) system

Sending Emission-related Malfunction Code

• The DTCs are shown below.

DTC table

×: Applicable
-: Not applicable

DTC No.

Condition

MIL

DC

Monitor item

Memory function

P0011*1
CMP timing over-advanced
ON
1
CCM
×
P0012*1
CMP timing over-retarded
ON
2
CCM
×
P0031
Front HO2S heater circuit low input
ON
2
HO2S heater
×
P0032
Front HO2S heater circuit high input
ON
2
HO2S heater
×
P0037
Rear HO2S heater circuit low input
ON
2
HO2S heater
×
P0038
Rear HO2S heater circuit high input
ON
2
HO2S heater
×
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
CCM
×
P0118
ECT sensor circuit high input
ON
1
CCM
×
P0121
TP sensor stuck closed
ON
2
CCM
×
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
CCM
×
P0132
Front HO2S circuit high input
ON
2
HO2S
×
P0133
Front HO2S circuit problem
ON
2
HO2S
×
P0134
Front HO2S no activity detected
ON
2
HO2S
×
P0138
Rear HO2S circuit high input
ON
2
HO2S
×
P0140
Rear HO2S no activity detected
ON
2
HO2S
×
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
×
P0420
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
×
P0511
IAC valve circuit problem
ON
1
CCM
×
P0602
PCM programming error
ON
1
CCM
×
P0610
PCM vehicle options error
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
- 
P2006
Variable tumble shutter valve stuck closed
ON
2
CCM
×
P2009
Variable tumble solenoid valve circuit low input
ON
2
CCM
×
P2010
Variable tumble solenoid valve circuit high input
ON
2
CCM
×
P2088*1
Oil control valve (OCV) actuator circuit low
ON
1
CCM
×
P2089*1
Oil control valve (OCV) actuator 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
×
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
Front HO2S signal stuck lean
ON
2
HO2S
×
P2196
Front HO2S signal stuck rich
ON
2
HO2S
×
P2228
BARO sensor circuit low input
ON
1
CCM
×
P2229
BARO sensor circuit high input
ON
1
CCM
×
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
×
*1 :
L3

Sending 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 when the ignition switch is turned to the ON position in the next drive cycle. 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.

Terminal name

Function

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