< Wake-Up Diagnosis >

Store the number of wake-up activation when the ECM wakes up by the soaking timer IC.

Next time when the ignition switch is ON, if the number of wake-up activation does not reach the predetermined value even though the counter in soaking timer IC operates 1 hour or more, judge as wake-up malfunction.

Fig 1: Ignition Switch, Main Relay, Driving Cycle, ECM Counter And Soak Timer IC Counter Timing Pattern (Wake-Up Diagnosis)

Courtesy of SUBARU OF AMERICA, INC.

Abnormality Judgment

Judge as NG when the following conditions are established.

JUDGMENT VALUE

Malfunction Criteria	Threshold Value
Number of wake-up	< Wake-up indication count

Normality Judgment

Judge as OK when the following conditions are established.

JUDGMENT VALUE

Malfunction Criteria	Threshold Value
Number of wake-up	≥ Wake-up indication count

Abnormality Judgment

Judge as NG when the following conditions are established.

JUDGMENT VALUE

Malfunction Criteria	Threshold Value
Ignition switch	ON
Driving cycle	Completed
When any one of the followings is established.
Timer diagnosis	NG
Full count diagnosis	NG
Soaking timer IC setting diagnosis	NG
Timer diagnosis (during soaking)	NG
Wake-up diagnosis	NG

Time Needed for Diagnosis: Approx. 5 - 9.5 hours

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cycles.

Normality Judgment

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE

Malfunction Criteria	Threshold Value
Ignition switch	ON
Driving cycle	Completed
All of the following conditions are established.
Timer diagnosis	OK
Full count diagnosis	OK
Soaking timer IC setting diagnosis	OK
Timer diagnosis (during soaking)	OK
Wake-up diagnosis	OK

Time Needed for Diagnosis: Approx. 5 - 9.5 hours