DTC P1560 BACK-UP VOLTAGE CIRCUIT MALFUNCTION
|
DTC P1560 BACK-UP VOLTAGE CIRCUIT MALFUNCTION
|
Detect open or short circuit of the back-up
voltage circuit.
Judge NG when the back-up voltage becomes
smaller than the battery voltage.
Secondary
Parameter
|
Enable
Condition
|
None
|
|
Always perform the diagnosis continuously.
Abnormality Judgment
Judge NG when the continuous time of completing
the malfunction criteria below becomes more than 2.5 seconds.
Judgment
Value
Malfunction
Criteria
|
Threshold
Value
|
Voltage
of back-up power
|
Low
|
Battery
voltage
|
≥ 10.9
V
|
Engine
speed
|
≥ 500
rpm
|
Time Needed for Diagnosis:
2.5
seconds
Malfunction Indicator
Light Illumination:
Illuminates as soon as malfunction occurs.
Normality Judgment
Judge OK and clear NG when the malfunction
criteria below is completed.
Judgment
Value
Malfunction
Criteria
|
Threshold
Value
|
Voltage
of back-up power supply
|
High
|
Battery
voltage
|
≥ 10.9
V
|
Engine
speed
|
≥ 500
rpm
|
•
|
When the OK idling cycle was completed 40 times
in a row
|
•
|
When “Clear Memory” was
performed
|
MALFUNCTION
INDICATOR LIGHT CLEAR CONDITION
|
•
|
When the OK driving cycle was completed 3 times
in a row
|
•
|
When “Clear Memory” was
performed
|
None
ECM OPERATION
AT DTC SETTING
|
Memorize the freeze frame data. (For test
mode $02)