| Last Modified: 11-27-2007 | 1.6 C | |
| Service Category: Engine/Hybrid System | Section: Engine Control | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM000002I3U01NX |
| Title: 3UR-FE ENGINE CONTROL: SFI SYSTEM: DESCRIPTION (2008 LX570) | ||
|
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 engine switch is turned off. If the output voltage is higher than 7 V when the engine switch is turned off, the ECM will illuminate the MIL and store DTC(s) when the engine switch is turned on (IG).
|
DTC Code |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
P0657 |
A throttle actuator power supply error. |
ECM |
MONITOR STRATEGY
|
Related DTCs |
None |
|
Required sensors/Components (Main) |
ECM |
|
Required sensors/Components (Related) |
Throttle actuator |
|
Frequency of operation |
Once per driving cycle |
|
Duration |
Within 1 second |
|
MIL operation |
Immediate |
|
Sequence of operation |
None |
TYPICAL ENABLING CONDITIONS
|
Engine switch |
From on (IG) to off |
TYPICAL MALFUNCTION THRESHOLDS
|
Throttle actuator power supply |
7 V or higher |
INSPECTION PROCEDURE
PROCEDURE
|
1. |
CHECK DTC |
(a) Clear DTC
.
(b) Turn the engine 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 engine switch on (IG) for 10 seconds.
(f) Turn the engine switch off.
(g) Turn the engine switch on (IG).
(h) Check DTC.
OK:
P0657 is not output.
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