ON-BOARD DIAGNOSTIC FUNCTION
id070200100300
Malfunction Detection Function
Fail-safe Function
Fail-safe Function Table
Malfunction determination part |
When malfunction is determined at IG SW ON |
When IG SW is turned to ON during malfunction |
---|---|---|
Cabin temperature sensor
|
Cabin temperature sensor input value is set at 25 °C {77 °F}.
|
←
|
Ambient temperature sensor
|
Ambient temperature sensor input value is set at the value just before the malfunction.
|
←
|
Evaporator temperature sensor
|
Evaporator temperature sensor input value is set at 0 °C {32 °F}.
|
←
|
Solar radiation sensor
|
Solar radiation sensor set value is set at 0 W/m2.
|
←
|
ECT sensor
|
ECT sensor input value is set at 80 °C {176 °F}.
|
←
|
Air mix actuator
(Potentiometer)
|
Stops the air mix actuator drive signal at the point a malfunction is determined.
However, MAX COLD when the manually set temperatures is at 18.0, and MAX HOT when the manually set temperature is 32.0.
|
←
|
Airflow mode actuator
(Potentiometer)
|
Stops the mode actuator drive signal at the point a malfunction is determined.
However, for manual operation with the airflow mode selector switch, only vent mode is operable.
Defroster switch operation is operable
|
←
|
Air mix actuator
(Motor lock)
|
Stops the air mix actuator drive signal at the point a malfunction is determined. Then a drive signal is output to the air mix actuator for approx. every 5 min and malfunction determination is performed.
|
After the IG SW is at ON, regular output of the air mix actuator drive signal recommences. Then a drive signal is output to the air mix actuator approx. every 5 min and malfunction determination is performed.
|
Airflow mode actuator
(Motor lock)
|
Stops mode actuator drive signal at the point a malfunction is determined. Then a drive signal is output to the mode actuator approx. every 5 min and malfunction determination is performed.
|
After the IG SW is at ON, regular output of the mode actuator drive signal recommences. Then a drive signal is output to the mode actuator approx. every 5 min and malfunction determination is performed.
|
Memory Function
Malfunction Display Function
DTC Display Example
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|
Present Malfunction Display Mode
DTC Table
No. |
Output pattern |
Malfunction location |
Detected condition |
Memory function |
---|---|---|---|---|
02
|
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Solar radiation sensor (present malfunction)
|
Solar radiation sensor circuit short
|
—
|
06
|
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Cabin temperature sensor (present malfunction)
|
Cabin temperature sensor circuit open/short circuit
|
—
|
10
|
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Evaporator temperature sensor (present malfunction)
|
Evaporator temperature sensor circuit open/short circuit
|
—
|
12
|
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Ambient temperature sensor (present malfunction)
|
Ambient temperature sensor circuit open/short circuit
|
—
|
14
|
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ECT sensor (present malfunction)
|
ECT sensor open/short circuit
|
—
|
18
|
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Air mix actuator (potentiometer) (present malfunction)
|
Air mix actuator (potentiometer) circuit open/short circuit
|
—
|
21
|
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Airflow mode actuator (potentiometer) (present malfunction)
|
Airflow mode actuator (potentiometer) circuit open/short circuit
|
—
|
Past Malfunction Display Mode
DTC Table
No. |
Output pattern |
Malfunction location |
Detected condition |
Memory function |
---|---|---|---|---|
07
|
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Cabin temperature sensor (past malfunction)
|
When an open/short has occurred in the cabin temperature sensor circuit 1 time or more in the past
|
X
|
11
|
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Evaporator temperature sensor (past malfunction)
|
When an open/short has occurred in the evaporator temperature sensor circuit 1 time or more in the past
|
X
|
13
|
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Ambient temperature sensor (past malfunction)
|
When an open/short has occurred in the ambient temperature sensor circuit 1 time or more in the past
|
X
|
15
|
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ECT sensor (past malfunction)
|
When an open/short has occurred in the ECT sensor circuit 1 time or more in the past
|
X
|
19
|
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Air mix actuator (potentiometer) (past malfunction)
|
When an open/short has occurred in the air mix actuator (potentiometer) circuit 1 time or more in the past
|
X
|
22
|
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Airflow mode actuator (potentiometer) (past malfunction)
|
When an open/short has occurred in the airflow mode actuator (potentiometer) circuit 1 time or more in the past
|
X
|
58
|
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Air mix actuator (motor lock) (past malfunction)
|
When motor lock has occurred in the air mix actuator circuit 1 time or more in the past
|
X
|
59
|
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Airflow mode actuator (motor lock) (past malfunction)
|
When motor lock has occurred in the airflow mode actuator circuit 1 time or more in the past
|
X
|
A/C Operation Check Mode
Step |
Target part |
Operation condition |
Monitor display* |
---|---|---|---|
1
|
Blower motor
|
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1
|
2
|
Air mix door
|
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20.0 (0%)
20.5 (50%)
21.0 (100%)
20.5 (50%)
|
3
|
Airflow mode door
|
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3
|
4
|
Air intake door
A/C compressor
|
FRESH Û REC
ON Û OFF
|
4
|