Toyota Venza: Vehicle Speed Sensor "A" Intermittent / Erratic / High (P0503)
DESCRIPTION
If a malfunction (a rapid change in vehicle speed) in the vehicle speed signal being output from the skid control ECU is detected while the cruise control is in operation, the ECM determines that there is a momentary interruption or noise, and outputs a DTC.
|
DTC |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
P0503 |
A momentary interruption and noise are detected when a rapid change of the vehicle speed occurs while cruise control is in operation. |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
This DTC may be output by 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) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Chassis / ABS/VSC/TRC / DTC.
(e) Check for DTCs.
|
Result |
Proceed to |
|---|---|
|
DTC is not output |
A |
|
DTC is output |
B |
| B | .gif) |
GO TO VEHICLE STABILITY CONTROL SYSTEM (DTC CHART) |
|
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|
2. |
REPLACE COMBINATION METER ASSEMBLY |
(a) Replace the combination meter assembly (See page
.gif)
).
|
|
3. |
CHECK DTC (CRUISE CONTROL SYSTEM) |
(a) Clear the DTCs (See page ).
(b) Perform the following to make sure that the DTC detection conditions are met.
HINT:
If the detection conditions are not met, the malfunction cannot be detected.
(1) Drive at the required speed of between 40 km/h (25 mph) and 200 km/h (125 mph).
(2) Turn the cruise control main switch on.
(3) Push the -SET switch to activate the cruise control.
(c) Check for DTCs (See page ).
|
Result |
Proceed to |
|---|---|
|
DTC is not output |
A |
|
DTC P0503 is output (for 1AR-FE) |
B |
|
DTC P0503 is output (for 2GR-FE) |
C |
| A | |
END |
| B | |
REPLACE ECM |
| C | |
REPLACE ECM |
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
If a trouble code is displayed during the DTC check, check the trouble areas
listed for that code in the table below and proceed to the appropriate page.
Cruise Contr ...
Vehicle Speed Sensor Malfunction (P0500)
DESCRIPTION
The vehicle speed sensors detect the wheel speed and send the appropriate signals
to the skid control ECU. The skid control ECU converts these wheel speed signals
into a 4-pulse signa ...
Other materials about Toyota Venza:
Disassembly
DISASSEMBLY
PROCEDURE
1. REMOVE TRANSMISSION WIRE
2. REMOVE ATF TEMPERATURE SENSOR ASSEMBLY
(a) Remove the 4 bolts, ATF temperature sensor assembly and clamp from
the valve body assembly.
Text in Illustration
*1
...
No Response from Steering Lock ECU (B2786)
DESCRIPTION
This DTC is stored when LIN communication between the certification ECU (smart
key ECU assembly) and steering lock ECU (steering lock actuator assembly) stops
for more than 10 seconds.
DTC No.
DTC Detection Condition
...
Replacement
REPLACEMENT
PROCEDURE
1. REPLACE GENERATOR DRIVE END FRAME BEARING
(a) Remove the 4 screws and bearing retainer from the drive end frame.
(b) Using SST and a hammer, tap out the drive end ...
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