- Vehicle speed sensor
- Vehicle speed sensor signal circuit
- ECM
- Combination meter
| Last Modified: 11-27-2007 | 1.6 C | |
| Service Category: Engine/Hybrid System | Section: Cruise Control | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM000003ANM004X |
| Title: CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM: DESCRIPTION (2008 LX570) | ||
|
DTC |
P0503 |
Vehicle Speed Sensor "A" Intermittent / Erratic / High |
DESCRIPTION
If a malfunction (a rapid change in vehicle speed) in the vehicle speed signal being output from the master cylinder solenoid (skid control ECU) is detected while the dynamic radar cruise control is in operation, the ECM determines there to be a momentary interruption and noise, and outputs a DTC.
|
DTC Code |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
P0503 |
A momentary interruption and noise are detected when a rapid change of the vehicle speed occurs while the dynamic radar cruise control is in operation. |
|
INSPECTION PROCEDURE
This DTC code may be output under the vehicle stability control system at the same time. In that case, perform troubleshooting for the vehicle stability control system first.
PROCEDURE
|
1. |
CHECK DTC (VEHICLE STABILITY CONTROL SYSTEM) |
(a) Using the Techstream, enter the following menus: Chassis / ABS/VSC/TRAC / Trouble Code.
(b) Check for DTCs
.
OK:
DTC is not output.
|
|
2. |
CHECK DTC (DYNAMIC RADAR CRUISE CONTROL SYSTEM) |
(a) Using the Techstream, enter the following menus: Powertrain / Radar Cruise / Trouble Code.
(b) Clear the DTCs
.
(c) Perform the following to make sure the DTC detection conditions are met.
HINT:
If the detection conditions are not met, the system cannot detect the malfunction.
(1) Drive the vehicle at a speed of 40 km/h (25 mph) or more.
(2) Turn the cruise control main switch on.
(3) Push the -SET switch to activate the dynamic radar cruise control.
(d) Check for DTCs
.
OK:
DTC P0503 is not output.
|
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