MALFUNCTION DETECTION FUNCTION [FN4A-EL]

id050218100300


Malfunction Detection Function

•  In the malfunction detection function, the PCM detects malfunctions in the transaxle while driving.
•  When vehicle driving conditions correspond with a preset malfunction detection condition, the PCM determines that the transaxle has a malfunction and stores the corresponding DTC.
•  When a malfunction is detected, stored DTCs can be retrieved using the scan tool connected to the DLC-2.

DTC 7-digit Code Definition

•  When related systems or components have failed, the CM stores the DTC of the malfunctioning part in the CM memory, and allows for the retrieval of the store data using scanning tool when necessary. The DTCs are indicated using seven digits. Each digit indicates the following.
am2zzn00001403

DTC Table

X: Applicable

DTC No.

Condition

MIL

HOLD indicator light

DC

Monitor item

Memory function
P0706:00
TR switch circuit range/performance
ON
Flash
2
CCM
X
P0707:00
TR switch circuit low input
ON
Flash
1
CCM
X
P0708:00
TR switch circuit high input
ON
Flash
1
CCM
X
P0711:00
TFT sensor circuit range/performance
ON
OFF
2
CCM
X
P0712:00
TFT sensor circuit low input
ON
Flash
1
CCM
X
P0713:00
TFT sensor circuit high input
ON
Flash
1
CCM
X
P0715:00
Input/turbine speed sensor circuit malfunction
ON
Flash
1
CCM
X
P0720:00
VSS circuit malfunction
ON
Flash
2
CCM
X
P0731:00
Gear 1 incorrect ratio
OFF
Flash
1
CCM
X
P0732:00
Gear 2 incorrect ratio
OFF
Flash
1
CCM
X
P0733:00
Gear 3 incorrect ratio
OFF
Flash
1
CCM
X
P0734:00
Gear 4 incorrect ratio
OFF
Flash
1
CCM
X
P0741:00
TCC stuck off
OFF
Flash
1
CCM
X
P0742:00
TCC stuck on
OFF
Flash
1
CCM
X
P0745:00
Pressure control solenoid malfunction
OFF
Flash
1
CCM
X
P0751:00
Shift solenoid A stuck off
ON
Flash
2
CCM
X
P0752:00
Shift solenoid A stuck on
ON
Flash
2
CCM
X
P0753:00
Shift solenoid A electrical malfunction
ON
Flash
1
CCM
X
P0756:00
Shift solenoid B stuck off
ON
Flash
2
CCM
X
P0757:00
Shift solenoid B stuck on
ON
Flash
2
CCM
X
P0758:00
Shift solenoid B electrical malfunction
ON
Flash
1
CCM
X
P0761:00
Shift solenoid C stuck off
ON
Flash
2
CCM
X
P0762:00
Shift solenoid C stuck on
ON
Flash
2
CCM
X
P0763:00
Shift solenoid C electrical malfunction
ON
Flash
1
CCM
X
P0766:00
Shift solenoid D stuck off
ON
Flash
2
CCM
X
P0767:00
Shift solenoid D stuck on
OFF
Flash
2
CCM
X
P0768:00
Shift solenoid D electrical malfunction
ON
Flash
1
CCM
X
P0771:00
Shift solenoid E stuck off
ON
Flash
2
CCM
X
P0772:00
Shift solenoid E stuck on
ON
Flash
2
CCM
X
P0773:00
Shift solenoid E electrical malfunction
ON
Flash
1
CCM
X
P0883:00
TCM B+ high
ON
Flash
1
CCM
X
P0894:00
Transaxle component slipping
OFF
Flash
1
CCM
X
P1566:00
TCM B+ low
OFF
Flash
1
CCM
X
P1783:00
ATF high oil temperature malfunction
OFF
Flash
1
CCM
X


DTC Detection Condition

DTC No.

On-board diagnostic function

Detection condition
P0706:00
TR switch circuit range/performance
•  The PCM detects no position/range signal for 100 s when the following conditions are met.
―  Vehicle speed: more than 20 km/h {12 mph}
―  Engine speed: more than 530 rpm
―  Input voltage from the TR switch: more than 0.49 V
P0707:00
TR switch circuit low input
•  The PCM detects that input voltage from the TR switch is less than 0.49 V for 100 s when the following conditions are met.
―  Vehicle speed: more than 20 km/h {12 mph}
―  Engine speed: more than 530 rpm
P0708:00
TR switch circuit high input
•  The PCM detects that input voltage from the TR switch is more than 4.78 V for 100 s when the following conditions are met.
―  Vehicle speed: more than 20 km/h {12 mph}
―  Engine speed: more than 530 rpm
P0711:00
TFT sensor circuit range/performance
•  The PCM detects that input voltage from the TFT sensor is less than 0.03 V when the following conditions are met.
―  Time since engine start: more than 180 s
―  Vehicle is driven for 90 s or more at vehicle speed between 25—59 km/h {15—36 mph}, and then 60 km/h {37 mph} or more for 60 s or more
P0712:00
TFT sensor circuit low input
•  The PCM detects that input voltage from the TFT sensor is less than 0.05 V for 150 s at vehicle speed 20 km/h {12 mph} or more.
P0713:00
TFT sensor circuit high input
•  The PCM detects that input voltage from the TFT sensor is more than 4.66 V for 150 s at vehicle speed 20 km/h {12 mph} or more.
P0715:00
Input/turbine speed sensor circuit malfunction
•  The PCM detects no signal from the input/turbine speed sensor at vehicle speed 41 km/h {25 mph} or more.
P0720:00
VSS circuit malfunction
•  The PCM detects no signal from the VSS when the following conditions are met.
―  Engine coolant temperature: more than 60 °C {140 °F}
―  D, S or L range
―  Turbine speed: more than 1,500 rpm
P0731:00
Gear 1 incorrect ratio
•  The PCM detects that revolution ratio of the input revolution to output revolution is less than 2.185 four times when the following conditions are met.
―  1GR
―  Throttle opening angle: 3.17%
P0732:00
Gear 2 incorrect ratio
•  The PCM detects that revolution ratio of the input revolution to output revolution in 2GR is more than 2.185 or less than 1.277 three times.
P0733:00
Gear 3 incorrect ratio
•  The PCM detects that revolution ratio of the input revolution to output revolution is between 1.404—1.704 when the following conditions are met.
―  3GR
―  Vehicle speed: more than 17 km/h {11 mph}
―  TCC operation: Off
•  The PCM detects that revolution ratio of the input revolution to output revolution is less than 0.848 when the following conditions are met.
―  3GR
―  Vehicle speed: more than threshold (changes by throttle opening angle)
―  TCC operation: Off
P0734:00
Gear 4 incorrect ratio
•  The PCM detects that revolution ratio of the input revolution to output revolution is more than 1.277 or less than 0.57 when the following conditions are met.
―  4GR
―  Vehicle speed: more than 27 km/h {17 mph}
•  The PCM detects that revolution ratio of the input revolution to output revolution is between 0.91—1.09 when the following conditions are met.
―  4GR
―  Vehicle speed: more than 28 km/h {17 mph}
―  TCC operation: Off
P0741:00
TCC stuck off
•  The PCM detects that difference between the engine revolution and turbine revolution is more than 100 rpm when the following conditions are met.
―  4GR
―  Vehicle speed: between 60—100 km/h {38.0—62.1 mph}
―  TCC operation: On
―  Shift solenoid A duty ratio: more than 99.2%
P0742:00
TCC stuck on
•  The PCM detects that difference between the engine revolution and turbine revolution is less than 50 rpm when the following conditions are met.
―  4GR
―  Vehicle speed: more than 70 km/h {43 mph}
―  TCC operation: Off
―  Throttle opening angle: less than 0.78%, 3.125—10.1% or more than 10.1%
P0745:00
Pressure control solenoid malfunction
•  The PCM detects that output voltage to the pressure control solenoid is stuck at 0 V or B+ when the solenoid valve operates according to PCM calculation.
P0751:00
Shift solenoid A stuck off
•  The PCM detects that revolution ratio of the input revolution to output revolution is between 0.91—1.09 when the following conditions are met.
―  4GR
―  Vehicle speed: more than 28 km/h {17 mph}
―  TCC operation: Off
P0752:00
Shift solenoid A stuck on
•  The PCM detects that turbine revolution is more than 187.5 rpm with the vehicle stopped in D range.
P0753:00
Shift solenoid A electrical malfunction
•  The PCM detects that output voltage to the shift solenoid A is stuck at 0 V or B+ when the solenoid valve operates according to PCM calculation.
P0756:00
Shift solenoid B stuck off
•  The PCM detects that revolution ratio of the input revolution to output revolution is less than 2.185 four times when the following conditions are met.
―  D range
―  1GR
―  Throttle opening angle: 3.17%
P0757:00
Shift solenoid B stuck on
•  The PCM detects that revolution ratio of the input revolution to output revolution in 2GR is more than 2.185 or less than 1.277 three times.
•  The PCM detects that revolution ratio of the input revolution to output revolution is between 0.91—1.09 when the following conditions are met.
―  4GR
―  Vehicle speed: more than 28 km/h {17 mph}
―  TCC operation: Off
P0758:00
Shift solenoid B electrical malfunction
•  The PCM detects that output voltage to the shift solenoid B is stuck at 0 V or B+ when the solenoid valve operates according to PCM calculation.
P0761:00
Shift solenoid C stuck off
•  The PCM detects that revolution ratio of the input revolution to output revolution is less than 2.185 four times when the following conditions are met.
―  1GR
―  Throttle opening angle: 3.17%
•  The PCM detects that revolution ratio of the input revolution to output revolution in 2GR is more than 2.185 or less than 1.277 three times.
P0762:00
Shift solenoid C stuck on
•  The PCM detects that revolution ratio of the input revolution to output revolution is between 1.404—1.704 when the following conditions are met.
―  3GR
―  Vehicle speed: more than 17 km/h {11 mph}
―  TCC operation: Off
P0763:00
Shift solenoid C electrical malfunction
•  The PCM detects that output voltage to the shift solenoid C is stuck at 0 V or B+ when the solenoid valve operates according to PCM calculation.
P0766:00
Shift solenoid D stuck off
•  The PCM detects that vehicle speed is more than 27 km/h {17 mph} when the following conditions are met.
―  Revolution ratio of the input revolution to output revolution is more than 1.277 or less than 0.57 in 4GR
P0767:00
Shift solenoid D stuck on
•  The PCM detects that revolution ratio of the input revolution to output revolution is less than 0.848 when the following conditions are met.
―  3GR
―  Vehicle speed: more than threshold (changes by throttle opening angle)
―  TCC operation: Off
P0768:00
Shift solenoid D electrical malfunction
•  The PCM detects that output voltage to the shift solenoid D is stuck at 0 V or B+ when the solenoid valve operates according to PCM calculation.
P0771:00
Shift solenoid E stuck off
•  The PCM detects that difference between the engine revolution and turbine revolution is more than 100 rpm when the following conditions are met.
―  4GR
―  Vehicle speed: between 60—100 km/h {38.0—62.1 mph}
―  TCC operation: On
―  Shift solenoid A duty ratio: more than 99.2%
P0772:00
Shift solenoid E stuck on
•  The PCM detects that difference between the engine revolution and turbine revolution is less than 50 rpm when the following conditions are met.
―  4GR
―  Vehicle speed: more than 70 km/h {43 mph}
―  TCC operation: Off
―  Throttle opening angle: less than 0.78%, 3.125—10.1% or more than 10.1%
P0773:00
Shift solenoid E electrical malfunction
•  The PCM detects that output voltage to the shift solenoid E is stuck at 0 V or B+ when the solenoid valve operates according to PCM calculation.
P0883:00
TCM B+ high
•  The PCM detects that battery voltage is more than 16.01 V.
P0894:00
Transaxle component slipping
•  The PCM detects that turbine revolution is more than 187 rpm when the following conditions are met.
―  Vehicle stopped (brake pedal is depressed)
―  Accelerator pedal is fully released
―  Engine running at idle
―  Selector lever position moved to D range from N position
P1566:00
TCM B+ low
•  The PCM detects that battery voltage is less than threshold (changes by ATF temperature) at engine speed 500 rpm or more.
P1783:00
ATF high oil temperature malfunction
•  The PCM detects that ATF temperature is more than 149.5°C {301.1 °F} when the following conditions are met.
―  TFT sensor circuit malfunction: not stored
―  Input voltage from the TFT sensor is more than 0.06 V


Fail-Safe Function

•  In the fail-safe function, minimum vehicle drivability is obtained by changing the signals that are determined to be malfunctions by the malfunction detection function to the preset values, and limiting PCM control.

DTC No.

On-board diagnostic function

Fail-safe

TCC
P0706:00
TR switch circuit range/performance
•  Inhibits 1GR and 4GR
•  Inhibits feedback correction
Enabled
P0707:00
TR switch circuit low input
•  Inhibits 1GR and 4GR
•  Inhibits feedback correction
Enabled
P0708:00
TR switch circuit high input
•  Inhibits 1GR and 4GR
•  Inhibits feedback correction
Enabled
P0711:00
TFT sensor circuit range/performance
N/A
Disabled
P0712:00
TFT sensor circuit low input
•  Switch the shift pattern to high temperature mode
•  Inhibits feedback correction
Enabled
P0713:00
TFT sensor circuit high input
•  Switch the shift pattern to high temperature mode
•  Inhibits feedback correction
Enabled
P0715:00
Input/turbine speed sensor circuit malfunction
•  Inhibits shifting to 4GR from 3GR
•  Inhibits feedback correction
Disabled
P0720:00
VSS circuit malfunction
•  Inhibits feedback correction
Enabled
P0731:00
Gear 1 incorrect ratio
•  Inhibits 1GR
•  Inhibits feedback correction
Enabled
P0732:00
Gear 2 incorrect ratio
•  Inhibits 2GR
•  Maximizes line pressure
•  Inhibits feedback correction
Enabled
P0733:00
Gear 3 incorrect ratio
•  Inhibits feedback correction
Enabled
P0734:00
Gear 4 incorrect ratio
•  Inhibits 4GR
•  Maximizes line pressure
•  Inhibits feedback correction
Enabled
P0741:00
TCC stuck off
•  Maximizes line pressure
•  Inhibits feedback correction
Disabled
P0742:00
TCC stuck on
•  Maximizes line pressure
•  Inhibits feedback correction
Disabled
P0745:00
Pressure control solenoid malfunction
•  Maximizes line pressure
•  Inhibits feedback correction
Enabled
P0751:00
Shift solenoid A stuck off
•  Inhibits 4GR
•  Maximizes line pressure
•  Inhibits feedback correction
Disabled
P0752:00
Shift solenoid A stuck on
•  Inhibits 1GR, 2GR and 3GR
•  Inhibits feedback correction
Enabled
P0753:00
Shift solenoid A electrical malfunction
•  Inhibits 4GR
•  Maximizes line pressure
•  Inhibits feedback correction
Disabled
P0756:00
Shift solenoid B stuck off
•  Inhibits 1GR and 4GR
•  Inhibits shifting to 3GR from 2GR
•  Inhibits shifting to 4GR from 3GR
•  Maximizes line pressure
•  Inhibits feedback correction
Enabled
P0757:00
Shift solenoid B stuck on
•  Inhibits 2GR and 4GR
•  Maximizes line pressure
•  Inhibits feedback correction
Enabled
P0758:00
Shift solenoid B electrical malfunction
•  Inhibits 1GR and 4GR
•  Inhibits shifting to 3GR from 2GR
•  Inhibits shifting to 4GR from 3GR
•  Maximizes line pressure
•  Inhibits feedback correction
Enabled
P0761:00
Shift solenoid C stuck off
•  Inhibits 1GR and 2GR
•  Maximizes line pressure
•  Inhibits feedback correction
Enabled
P0762:00
Shift solenoid C stuck on
•  Inhibits 3GR and 4GR
•  Maximizes line pressure
•  Inhibits feedback correction
Enabled
P0763:00
Shift solenoid C electrical malfunction
•  Inhibits 1GR and 2GR
•  Maximizes line pressure
•  Inhibits feedback correction
Enabled
P0766:00
Shift solenoid D stuck off
•  Inhibits 4GR
•  Maximizes line pressure
•  Inhibits feedback correction
Enabled
P0767:00
Shift solenoid D stuck on
•  Inhibits 2GR and 4GR
•  Maximizes line pressure
•  Inhibits feedback correction
Disabled
P0768:00
Shift solenoid D electrical malfunction
•  Inhibits 4GR
•  Maximizes line pressure
•  Inhibits feedback correction
Disabled
P0771:00
Shift solenoid E stuck off
•  Maximizes line pressure
•  Inhibits feedback correction
Disabled
P0772:00
Shift solenoid E stuck on
•  Inhibits 1GR
•  Maximizes line pressure
•  Inhibits feedback correction
Disabled
P0773:00
Shift solenoid E electrical malfunction
•  Maximizes line pressure
•  Inhibits feedback correction
Disabled
P0883:00
TCM B+ high
•  Inhibits 1GR, 2GR and 4GR
•  Maximizes line pressure
Enabled
P0894:00
Transaxle component slipping
•  Inhibits 1GR, 2GR and 3GR
•  Maximizes line pressure
•  Inhibits feedback correction
Enabled
P1566:00
TCM B+ low
•  Inhibits 1GR, 2GR and 4GR
•  Maximizes line pressure
Enabled
P1783:00
ATF high oil temperature malfunction
•  Switch the shift pattern to high temperature mode
•  Inhibits feedback correction
Enabled


KOEO/KOER Self-test

•  On-board diagnosis is performed using the flow pre-set in the PCM, and according to the test execute command sent to the PCM from the external tester.
•  If a malfunction is detected as a result of the on-board diagnosis, a DTC is recorded in the PCM.
•  Refer to the self test table for DTCs corresponding to the self test function.

KOEO (Key ON, Engine Off) self-test

•  The KOEO self test is a powertrain control system self-diagnosis, performed when the ignition is switched to ON and the engine is stopped. A KOEO self test begins when the connected M-MDS sends an execute command to the PCM.
•  As the KOEO self test is performed, the PCM performs the inspection for set DTCs and if a malfunction is detected, the DTC is displayed on the M-MDS.


KOER (Key ON, Engine Running) self-test

•  The KOER self test is a powertrain control system self-diagnosis, performed when the ignition is switched to ON and the engine is idling. A KOER self test begins when the connected M-MDS sends an execute command to the PCM.
•  As the KOER self test is performed, the PCM performs the inspection for set DTCs and if a malfunction is detected the DTC is displayed on the M-MDS.


Freeze Frame Data

Freeze frame data
•  The freeze frame data consists of data for vehicle and engine control system operation conditions when malfunctions in the engine control system are detected and stored in the PCM.
•  Freeze frame data is stored at the instant the malfunction indicator lamp illuminates, and only a part of the DTC data is stored.
•  For the freeze frame data, if there are several malfunctions in the engine control system, the data for the malfunction which occurred initially is stored. Thereafter, if a misfire or fuel injection control malfunction occurs, data from the misfire or fuel injection control malfunction is written over the initially stored data. However, if the initially stored freeze frame data is a misfire or fuel injection control malfunction, it is not overwritten.
Snapshot data
•  The snap shot data stores the currently detected DTC data.
•  The recording timing for the freeze frame data/snap shot data differs depending on the number of DTC drive cycles.
―  For a DTC with a drive cycle number 1, only the malfunction determination data is recorded.
―  For a DTC with a drive cycle number 2, both the malfunction determination and undetermined data is recorded.

Freeze frame data table

Freeze frame data item

Unit

Description

Corresponding PID data monitor item
FUELSYS1
Open Loop/Closed Loop/OL-Drive/OL-Fault/CL-Fault
Fuel system status
FUELSYS
LOAD
%
Calculated engine load
—
ECT
°C {°F}
Engine coolant temperature
ECT
SFT1
%
Short term fuel trim
SHRTFT1
LFT1
%
Long term fuel trim
LONGFT1
MAP
Pa {kgf/m2, psi}
Manifold absolute pressure
MAP
RPM
RPM
Engine speed
RPM
VS
KPH {MPH}
Vehicle speed
VSS
SPARKADV
°
Ignition timing
SPARKADV
IAT
°C {°F}
Intake air temperature
IAT
MAF
g/sec {lb/min}
Mass airflow
MAF
TP
%
Throttle valve position No.1
TP1
RUNTM
hh:mm:ss
Time from engine start
—
EGRPCT
%
Target EGR valve position
SEGRP_DSD
EVAPPCT
%
Purge solenoid valve controlled value
EVAPCP
WARMUPS
—
Number of warm-up cycle after DTC cleared
—
CLRDIST
Km {mile}
Mileage after DTC cleared
—
BARO
Pa {kgf/m2, psi}
Barometric pressure
—
CATTEMP11
°C {°F}
Estimated catalytic converter temperature
—
VPWR
V
Module supply voltage
VPWR
ALV
%
Engine load
LOAD
TP_REL
%
Relative throttle position
TP REL
TP_B
%
Throttle valve position No.2
TP2
APP_D
%
Accelerator pedal position No.1
APP1
APP_E
%
Accelerator pedal position No.2
APP2
TAC_PCT
%
Target throttle valve position
ETC_DSD


Snapshot data table

Snapshot data item

Unit

Definition

Corresponding PID data monitor item
FUELSYS
OL/CL/OL-Drive/OL-Fault/CL-Fault
Fuel system status
FUELSYS
LOAD_C
%
Calculated engine load
—
ECT
°C {°F}
Engine coolant temperature
ECT
SHRTFT1
%
Short term fuel trim
SHRTFT1
LONGFT1
%
Long term fuel trim
LONGFT1
MAP
Pa {kgf/m2, psi}
Manifold absolute pressure
MAP
RPM
RPM
Engine speed
RPM
VSS
KPH {MPH}
Vehicle speed
VSS
SPARKADV
°
Ignition timing
SPARKADV
IAT
°C {°F}
Intake air temperature
IAT
MAF
g/sec {lb/min}
Mass airflow
MAF
TP1
%
Throttle valve position No.1
TP1
EG_RUN_TIME
—
Time from engine start
—
SEGRP_DSD
%
Target EGR valve position
SEGRP DSD
EVAPCP
%
Purge solenoid valve controlled value
EVAPCP
FLI
%
Fuel level in fuel tank
—
CLR_CNT
—
Number of warm-up cycle after DTC cleared
—
CLR_DIST
Km {mile}
Mileage after DTC cleared
—
FTP
Pa {kgf/m2, psi}
Fuel tank pressure
—
BARO
Pa {kgf/m2, psi}
Barometric pressure
—
CATT11_DSD
°C {°F}
Estimated catalytic converter temperature
—
VPWR
V
Module supply voltage
VPWR
LOAD
%
Engine load
LOAD
EQ_RAT11_DSD
—
Target equivalence ratio (lambda)
EQ_RAT11_DSD
TP REL
%
Relative throttle position
TP REL
AAT
°C {°F}
Ambient air temperature
—
TP2
%
Throttle valve position No.2
TP2
APP1
%
Accelerator pedal position No.1
APP1
APP2
%
Accelerator pedal position No.2
APP2
ETC_DSD
%
Target throttle valve position
ETC_DSD