| Last Modified: 11-29-2007 | 1.6 C | |
| Service Category: Engine/Hybrid System | Section: Engine Control | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM000002I3U01QX |
| Title: 2UZ-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 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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