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 ignition switch is turned off. If the output voltage is higher than 7 V when the ignition switch is turned off, the ECM illuminates the MIL and stores the DTC when the ignition switch is turned to ON.
DTC No. |
DTC Detection Condition |
Trouble Area |
---|---|---|
P0657 |
A throttle actuator power supply error (1 trip detection logic) |
ECM |
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 |
- |
MIL Operation |
Immediate |
Sequence of Operation |
None |
TYPICAL ENABLING CONDITIONS
Monitor runs whenever following DTCs not stored |
None |
Both of the following conditions are met |
- |
Electronic throttle actuator power supply voltage |
7 V or higher |
Ignition switch |
ON to off |
TYPICAL MALFUNCTION THRESHOLDS
Both of the following conditions are met |
- |
Last trip condition |
Met |
Command to electronic throttle actuator power |
ON |
CONFIRMATION DRIVING PATTERN
HINT:
Techstream Display |
Description |
---|---|
NORMAL |
|
ABNORMAL |
|
INCOMPLETE |
|
N/A |
|
HINT:
HINT:
CAUTION / NOTICE / HINT
HINT:
Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. 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
1. |
READ OUTPUT DTC (DTC P0657) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Clear the DTC (See page ).
(e) Turn the ignition switch off.
(f) Turn the Techstream off.
(g) Disconnect the Techstream.
(h) Disconnect the cable from the negative (-) battery terminal and wait for 1 minute.
(i) Connect the cable to the negative (-) battery terminal.
(j) Turn the ignition switch to ON.
(k) Wait 10 seconds or more.
(l) Turn the ignition switch off.
(m) Wait 15 seconds or more.
(n) Connect the Techstream to the DLC3.
(o) Turn the ignition switch to ON.
(p) Turn the Techstream on.
(q) Wait 5 seconds or more.
(r) Enter the following menus: Powertrain / Engine / Trouble Codes.
(s) Read the DTCs.
Result
Result |
Proceed to |
---|---|
DTC is not output |
A |
DTC P0657 is output |
B |
A | ![]() |
CHECK FOR INTERMITTENT PROBLEMS |
B | ![]() |
REPLACE ECM |
Low Power Supply Voltage (C1241/94)
DESCRIPTION
If a malfunction in the power source circuit occurs, or a malfunction in communication
with the skid control ECU or in a speed sensor occurs, the AWD control ECU will
prohibit operations by the fail-safe function.
DTC No.
...
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
The wireless door lock control system troubleshooting procedures are
based on the premise that the power door lock control system is operating
normally. Check the power door lock control system first before troub ...
Removal
REMOVAL
PROCEDURE
1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-)
battery terminal to disable the SRS system.
NOTICE:
When disconnecting the cable, some systems ne ...