DTC SUMMARY
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
MIL | Note |
---|---|---|---|---|---|
P261029 | ECM/PCM Engine Off Timer Performance Signal Invalid |
ECM internal malfunction |
ECM | Comes on |
|
P261093 |
ECM/PCM Engine Off Timer Performance No Operation |
ECM internal malfunction |
ECM | Comes on |
|
DTC No. | Monitoring Item |
Detection Timing | Detection Logic |
---|---|---|---|
P261029 | Soak timer (built into ECM) |
EVAP monitoring (ignition switch off) |
2 trip |
P261093 |
Soak timer (built into ECM) | Ignition switch ON |
2 trip |
DESCRIPTION
The soak timer operates after the ignition switch is turned off. When a certain amount of time has elapsed after turning the ignition switch off, the soak timer activates the ECM to perform malfunction checks which can only be performed after the engine is stopped. The soak timer is built into the ECM.
MONITOR DESCRIPTION
If the soak timer activates the ECM even though only a short amount of time has elapsed since the ignition switch was turned off, or if the soak timer does not activate the ECM even though a considerable amount of time has elapsed since the ignition switch was turned off, the ECM determines that the soak timer is malfunctioning, illuminates the MIL and stores a DTC the next time the ignition switch is turned to ON.
MONITOR STRATEGY
Related DTC | P2610: ECM internal engine off timer performance |
Required Sensors/Components (Main) | ECM |
Required Sensors/Components (Related) |
- |
Frequency of Operation |
Once per driving cycle |
Duration |
2 times |
MIL Operation |
2 driving cycles |
Sequence of Operation |
None |
TYPICAL ENABLING CONDITIONS
All
Monitor runs whenever the following DTCs are not stored |
None |
All of the following conditions are met |
- |
Auxiliary battery voltage |
8 V or higher |
Ignition switch |
Off |
Internal engine off timer clear record |
Off |
All of the following conditions are met |
- |
Internal engine off timer (elapsed time from engine stop) |
10 minutes or more, and less than 30 minutes |
Auxiliary battery voltage | 8 V or higher |
Ignition switch | ON |
Starter | Off |
All of the following conditions are met |
- |
Internal engine off timer (elapsed time from engine stop) |
40 minutes or more |
Auxiliary battery voltage |
8 V or higher |
Ignition switch |
ON |
Starter |
Off |
TYPICAL MALFUNCTION THRESHOLDS
Case 1
One of the following conditions is met | A, B or C |
A. Both of the following conditions are met |
- |
Internal engine off timer |
9.375 seconds or more |
CPU clock elapsed time |
1.96608 seconds or more, and less than 8.323072 seconds |
B. Both of the following conditions are met |
- |
Internal engine off timer |
18.75 seconds or more |
CPU clock elapsed time |
8.323072 to 10.420224 seconds |
C. Both of the following conditions are met |
- |
Internal engine off timer |
Less than 9.375 seconds |
CPU clock elapsed time |
More than 10.420224 seconds |
ECM started by internal engine off timer last trip |
Yes |
ECM started by internal engine off timer last trip |
No |
CONFIRMATION DRIVING PATTERN
HINT:
Click here
Click here
HINT:
GTS Display |
Description |
---|---|
NORMAL |
|
ABNORMAL |
|
INCOMPLETE |
|
HINT:
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
CAUTION / NOTICE / HINT
HINT:
PROCEDURE
1. | REPLACE ECM |
Click here
|
2. |
CLEAR DTC |
(a) Clear the DTCs.
Powertrain > Engine > Clear DTCs(b) Turn the ignition switch off and wait for at least 30 seconds.
|
3. |
CHECK WHETHER DTC OUTPUT RECURS (DTC P261029 OR P261093) |
(a) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
(b) Read the Pending DTCs.
Powertrain > Engine > Trouble CodesHINT:
If no pending DTC is output, the repair has been successfully completed.
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