ON-BOARD DIAGNOSTIC SYSTEM
FAILURE DETECTION FUNCTION
• The failure detection function detects input/output devices and system components operation to normal
condition values pre-programmed in the PCM.
• If a failure is detected, the HOLD indicator light flashes to warn the driver of a malfunction in the powertrain
system components or sensors/switches.
• The stored DTCs in the PCM are retrieved using the NGS.
• The failures are detected according to the following detection conditions. Detection conditions of the TP
sensor malfunction (P0122, P0123) are mentioned in the F1 section. (See F1-53 DTC P0122, F1-55 DTC
P0123.)
Transaxle Range (TR) Switch Short Circuit (P0705)
• Two or more input signals from the TR switch to the PCM or when input battery voltage remains after engine
speed 530 rpm or above during failure detection period.
Transaxle Range (TR) Switch Open Circuit (P0706)
• Input voltage from TR switch to PCM maintains 0 V when engine speed is 530 rpm or above and vehicle is
20 km/h {12 mph} or above during failure detection period.
Transaxle Fluid Temperature (TFT) Sensor Open or Short (P0710)
• Input voltage from TFT sensor to PCM is 0.06 V or below or 4.67 V or above when vehicle speed is 20 km/h
{12 mph} or above during failure detection period.
Transaxle Fluid Temperature (TFT) Sensor Stuck (P0711)
• Fluctuation value of TFT sensor output voltage to PCM is below 0.06 V in normal condition during failure
detection period.
Input/Turbine Speed Sensor Circuit Malfunction (P0715)
• No input/turbine speed sensor signal is inputs to PCM when vehicle speed is 40 km/h {25 mph} or above and
shift lever position is at D, S or L during failure detection period.
Shift or Pressure Control Solenoid Valve Circuit Malfunction
• If there is still voltage in the solenoid valve control terminal of the PCM when solenoid valve operates
according to the PCM calculation, OBD system judges “circuit malfunction”.
— Shift solenoid A (P0753)
• There is still voltage in shift solenoid A control terminal 82 of PCM when solenoid valve operates
according to PCM calculation.
— Shift solenoid B (P0758)
• There is still voltage in shift solenoid B control terminal 99 of PCM when solenoid valve operates
according to PCM calculation.
— Shift solenoid C (P0763)
• There is still voltage in shift solenoid C control terminal 102 of PCM when solenoid valve operates
according to PCM calculation.
— Shift solenoid D (P0768)
• There is still voltage in shift solenoid D control terminal 27 of PCM when solenoid valve operates
according to PCM calculation.
— Shift solenoid E (P0773)
• There is still voltage in shift solenoid E control terminal 1 of PCM when solenoid valve operates
according to PCM calculation.
— Pressure control solenoid (P0745)
• There is still voltage in pressure control solenoid control terminal 44 and 81 of PCM when solenoid
valve operates according to PCM calculation.
K2-15
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