P0510
Component Description
A closed throttle position switch and wide open throttle position switch are built into the throttle position sensor unit. The wide open throttle position switch is used only for A/T control.
When the throttle valve is in the closed position, the closed throttle position switch sends a voltage signal to the ECM. The ECM only uses this signal to open or close the EVAP canister purge volume control solenoid valve when the throttle position sensor is malfunctioning.
CONSULT-II Reference Value in Data Monitor Mode
Specification data are reference values.
On Board Diagnosis Logic
Malfunction is detected when battery voltage from the closed throttle position switch is sent to ECM with the throttle valve opened.
Possible Cause
- Harness or connectors
(The closed throttle position switch circuit is shorted. )
- Closed throttle position switch
- Throttle position sensor
DTC Confirmation Procedure
CAUTION: Always drive vehicle at a safe speed.
NOTE: If "DTC Confirmation Procedure" has been previously conducted, always turn ignition switch "OFF" and wait at least 10 seconds before conducting the next test.
WITH CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch "OFF", wait at least 10 seconds and then start engine.
3. Select "CLSD THL/P SW" in "DATA MONITOR" mode. If "CLSD THL/P SW" is not available, go to step 5.
4. Check the signal under the following conditions.
Condition Signal indication
Throttle valve: Idle position ON
Throttle valve: Slightly open OFF
If the result is NG, go to "Diagnostic Procedure" below.
If OK, go to following step.
5. Select "DATA MONITOR" mode with CONSULT-II.
6. Drive the vehicle for at least 5 consecutive seconds under the following condition.
THRTL POS SEN More than 2.5 V
VHCL SPEED SE More than 4 KPH (2 MPH)
Selector lever Suitable position
Driving location Driving vehicle uphill (Increased engine load) will help maintain the driving conditions required for this test.
7. If 1st trip DTC is detected, go to "Diagnostic Procedure" below.
Overall Function Check
Use this procedure to check the overall function of the closed throttle position switch circuit. During this check, a 1st trip DTC might not be confirmed.
WITH GST
1. Start engine and warm it up to normal operating temperature.
2. Check the voltage between ECM terminal 56 (Closed throttle position switch signal) and ground under the following conditions.
At idle: Battery voltage
At 2,000 rpm: Approximately 0 V
3. If NG, go to "Diagnostic Procedure" below.
EC-TP/SW-01:
EC-TP/SW-01 - Connector View:
Wiring Diagram
ECM TERMINALS AND REFERENCE VALUE MEASURED BETWEEN EACH TERMINAL AND 48.:
Diagnostic Procedure
Diagnostic Procedure Step 1:
Diagnostic Procedure Step 2:
Diagnostic Procedure Step 3:
Diagnostic Procedure Step 4:
Diagnostic Procedure Step 5:
Diagnostic Procedure Step 6:
Diagnostic Procedure Step 7:
Diagnostic Procedure Step 8:
Diagnostic Procedure Step 9:
