DIAGNOSTIC TEST MODE [ZY, Z6]

id0102c7142500

• 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

Full names

Unit

Fuel system loop status
Refer to list below.
LOAD
%
ECT
°C
°F
Short term fuel trim
%
Long term fuel trim
%
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
Short term fuel trim associated with front HO2S
%
Input voltage from rear HO2S
V
Short term fuel trim associated with rear HO2S
%
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
PCM voltage
V
Absolute load value
%
Theoretical air/fuel ratio coefficient to calculate target air/fuel 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

Full names

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
%
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
%
Theoretical air/fuel ratio coefficient to calculate target air/fuel 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.

×: Applicable
-: Not applicable

DTC No.

Condition

MIL

DC

Monitor item

Memory function

P0011
CMP-timing over-advanced
ON
1
CCM
×
P0012
CMP-timing over-retarded
ON
2
CCM
×
P0031
Front HO2S heater control circuit low
ON
2
HO2S heater
×
P0032
Front HO2S heater control circuit high
ON
2
HO2S heater
×
P0037*2
Rear HO2S heater control circuit low
ON
2
HO2S heater
×
P0038*2
Rear HO2S heater control circuit high
ON
2
HO2S heater
×
P0102
MAF sensor circuit low input
ON
1
CCM
×
P0103
MAF sensor circuit high input
ON
1
CCM
×
P0111*2
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*2
TP sensor circuit range/performance problem
ON
2
CCM
×
P0122
TP sensor circuit low input
ON
1
CCM
×
P0123
TP sensor circuit high input
ON
1
CCM
×
P0125*2
Insufficient coolant temperature for closed loop fuel control
ON
2
CCM
×
P0132
Front HO2S circuit high voltage
ON
2
HO2S
×
P0133*2
Front HO2S circuit slow response
ON
2
HO2S
×
P0134
Front HO2S circuit no activity detected
ON
2
HO2S
×
P0138*2
Rear HO2S circuit high voltage
ON
2
HO2S
×
P0140*2
Rear HO2S circuit no activity detected
ON
2
HO2S
×
P0300*2
Random misfire detected
Flash/ON
2
Misfire
×
P0301*2
Cylinder No.1 misfire detected
Flash/ON
1 or 2
Misfire
×
P0302*2
Cylinder No.2 misfire detected
Flash/ON
1 or 2
Misfire
×
P0303*2
Cylinder No.3 misfire detected
Flash/ON
1 or 2
Misfire
×
P0304*2
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
×
P0351*1
Ignition coil No.1 control circuit problem
ON
2
CCM
×
P0352*1
Ignition coil No.2 control circuit problem
ON
2
CCM
×
P0353*1
Ignition coil No.3 control circuit problem
ON
2
CCM
×
P0354*1
Ignition coil No.4 control circuit problem
ON
2
CCM
×
P0401*1
EGR flow insufficient detected
ON
2
CCM
×
P0403
EGR control circuit problem
ON
2
CCM
×
P0420*2
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
-
-
-
P0506*2
IAC system RPM lower than expected
ON
2
CCM
×
P0507*2
IAC system RPM higher than expected
ON
2
CCM
×
P0511
IAC circuit problem
ON
1
CCM
×
P0550*2
PSP switch circuit problem
ON
2
CCM
×
P0602
PCM programming error
ON
1
CCM
×
P0610
PCM vehicle options error
ON
1
CCM
×
P0660
Variable intake-air control circuit/open
OFF
1
Other
×
P0668
PCM temperature sensor circuit low input
OFF
1
Other
×
P0669
PCM temperature sensor circuit high input
OFF
1
Other
×
P0703*2
Brake switch input circuit problem
ON
2
CCM
×
P0704*2
CPP switch input circuit problem
ON
2
CCM
×
P0850*2
Neutral switch input circuit problem
ON
2
CCM
×
P1260*2
Immobilizer system problem
OFF
-
Other
-
P2006*2
Variable tumble control stuck close
ON
2
CCM
×
P2008
Variable tumble control circuit/open
ON
2
CCM
×
P2088
Variable valve timing control circuit low
ON
1
CCM
×
P2089
Variable valve timing control circuit high
ON
1
CCM
×
P2096*2
Target A/F feedback system too lean
ON
2
Fuel system
×
P2097*2
Target A/F feedback system too rich
ON
2
Fuel system
×
P2177
System too lean off idle
ON
2
Fuel system
×
P2178
System too rich off idle
ON
2
Fuel system
×
P2187
System too lean at idle
ON
2
Fuel system
×
P2188
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*2
BARO sensor circuit low input
ON
1
CCM
×
P2229*2
BARO sensor circuit high input
ON
1
CCM
×
P2502
Charging system voltage problem
OFF
1
-
-
P2503
Charging system voltage low
OFF
1
-
-
P2504
Charging system voltage high
OFF
1
-
-
P2507
PCM power input signal low
ON
1
CCM
×
*1 :
ZY
*2 :
Z6

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 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.

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)