MONITOR DESCRIPTION The ECM
monitors the output voltage to the throttle actuator. This self-check
ensures that the ECM is functioning properly. The output voltage is
usually 0 V when the power switch is turned off. If the output voltage
is 7 V or higher when the power switch is turned off, the ECM will
illuminate the MIL and store this DTC when the power switch is turned to
on (IG).
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
MIL | Memory |
Note | P06579E |
Actuator Supply Voltage "A" Stuck On |
A throttle actuator power supply error (1 trip detection logic). |
ECM | Comes on |
DTC stored | SAE Code: P0657 | MONITOR STRATEGY
Related DTCs | P0657: Electronic throttle actuator supply voltage circuit performance |
Required Sensors/Components (Main) | ECM |
Required Sensors/Components (Related) | Throttle actuator |
Frequency of Operation | Once per driving cycle |
Duration | 1 second | MIL Operation |
Immediate | Sequence of Operation |
None | TYPICAL ENABLING CONDITIONS
Monitor runs whenever the following DTCs are not stored |
None | Both of the following conditions are met |
- | Auxiliary battery voltage |
8 V or higher | Command to electronic throttle actuator power |
Off | TYPICAL MALFUNCTION THRESHOLDS
Electronic throttle actuator power supply voltage | 7 V or higher | CONFIRMATION DRIVING PATTERN
HINT:
- After repair has been completed, clear the DTC and then check that the
vehicle has returned to normal by performing the following All Readiness
check procedure.
Click here
- When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here
- Connect the Techstream to the DLC3.
- Turn the power switch on (IG).
- Turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the Techstream off.
- Turn the power switch off.
- Disconnect the Techstream.
- Disconnect the cable from the negative (-) auxiliary battery terminal and wait for 1 minute.
- Connect the cable to the negative (-) auxiliary battery terminal.
- Turn the power switch on (IG) [A].
- Wait 10 seconds or more.
- Turn the power switch off [B].
- Wait 15 seconds or more.
- Connect the Techstream to the DLC3.
- Turn the power switch on (IG).
- Turn the Techstream on.
- Wait 5 seconds or more [C].
- Enter the following menus: Powertrain / Engine / Trouble Codes [D].
- Read the pending DTCs.
HINT:
- If a pending DTC is output, the system is malfunctioning.
- If a pending DTC is not output, perform the following procedure.
- Enter the following menus: Powertrain / Engine / Utility / All Readiness.
- Input the DTC: P06579E.
- Check the DTC judgment result.
Techstream Display |
Description |
NORMAL |
- DTC judgment completed
- System normal
|
ABNORMAL |
- DTC judgment completed
- System abnormal
|
INCOMPLETE |
- DTC judgment not completed
- Perform driving pattern after confirming DTC enabling conditions
|
HINT:
CAUTION / NOTICE / HINT
NOTICE:
HINT: Read
Freeze Frame Data using the Techstream. The ECM records vehicle and
driving condition information as Freeze Frame Data the moment a DTC is
stored. When troubleshooting, Freeze Frame Data can help determine if
the vehicle was moving or stationary, if the engine was warmed up or
not, if the air fuel ratio was lean or rich, and other data from the
time the malfunction occurred. PROCEDURE
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Clear the DTCs. Powertrain > Engine > Clear DTCs
(e) Turn the power switch off.
NEXT |
| |
2. |
READ OUTPUT DTC (DTC P06579E) | (a) Disconnect the cable from the negative (-) auxiliary battery terminal and wait for 1 minute.
(b) Connect the cable to the negative (-) auxiliary battery terminal. (c) Turn the power switch on (IG).
(d) Wait 10 seconds or more. (e) Turn the power switch off. (f) Wait 15 seconds or more.
(g) Connect the Techstream to the DLC3. (h) Turn the power switch on (IG).
(i) Turn the Techstream on. (j) Wait 5 seconds or more. (k) Enter the following menus: Powertrain / Engine / Trouble Codes.
(l) Read the DTCs. Powertrain > Engine > Trouble Codes
Result | Proceed to |
DTCs are not output | A |
DTC P06579E is output |
B |
A |
| CHECK FOR INTERMITTENT PROBLEMS |
B |
| REPLACE ECM | |