| Last Modified: 11-29-2007 | 1.6 C | |
| Service Category: Engine/Hybrid System | Section: Engine Control | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM000002I3U01PX |
| Title: 3UR-FE ENGINE CONTROL: SFI SYSTEM: DESCRIPTION (2008 Sequoia) | ||
|
DTC |
P0657 |
Actuator Supply Voltage Circuit / Open |
DESCRIPTION
The ECM monitors the output voltage to the throttle actuator. This self-check ensures that the ECM is functioning properly. The output voltage usually is 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 will illuminate the MIL and store a DTC when the ignition switch is turned to ON.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
P0657 |
Throttle actuator power supply error |
ECM |
MONITOR STRATEGY
|
Related DTCs |
None |
|
Required sensors / components (main) |
ECM |
|
Required sensors / components (sub) |
Throttle actuator |
|
Frequency of operation |
Once per driving cycle |
|
Duration |
Within 1 second |
|
MIL operation |
Immediate |
|
Sequence of operation |
None |
TYPICAL ENABLING CONDITIONS
|
Ignition switch |
From ON to OFF |
TYPICAL MALFUNCTION THRESHOLDS
|
Throttle actuator power supply |
7 V or more |
INSPECTION PROCEDURE
PROCEDURE
|
1. |
CHECK DTC |
(a) Clear DTC
.
(b) Turn the ignition switch off.
(c) Disconnect the cable from the negative (-) battery terminal and wait for 1 minute.
(d) Connect the cable to the negative (-) battery terminal.
(e) Turn the ignition switch to ON for 10 seconds.
(f) Turn the ignition switch off.
(g) Turn the ignition switch to ON.
(h) Check DTC.
OK:
P0657 is not present.
|
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