P0510

DTC P0510 CTP SWITCH




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 control valve when the throttle position sensor is malfunctioning.

Consult-II Reference Value In Data Monitor Mode:

On Board Diagnosis Logic:

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 with CONSULT-II.




4. Check the signal under the given conditions.
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.
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.

WITHOUT CONSULT-II
1. Start engine and warm it up to normal operating temperature.







2. Check the voltage between ECM terminal 40 (Closed throttle position switch signal) and ground under the given conditions.
3. If NG, go to "Diagnostic Procedure" below.

EC-TP/SW-01:

Wiring Diagram

Diagnostic Procedure Step 1 - 3:

Diagnostic Procedure Step 4 - 8:

Diagnostic Procedure Step 9:

Diagnostic Procedure

Component Inspection

CLOSED THROTTLE POSITION SWITCH

With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch "OFF".
3. Remove vacuum hose connected to throttle opener.
4. Connect suitable vacuum hose to vacuum pump and throttle opener.




5. Apply vacuum [more than -40.0 kPa (-300 mmHg, -11.81 inHg)] until the throttle drum becomes free from the rod of the throttle opener.
6. Turn ignition switch "ON".
7. Select "DATA MONITOR" mode with CONSULT-II.




8. Check indication of "CLSD THL/P SW" under the given conditions. Measurement must be made with closed throttle position switch installed in vehicle.

Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch "OFF".
3. Remove vacuum hose connected to throttle opener.
4. Connect suitable vacuum hose to vacuum pump and throttle opener.




5. Apply vacuum [more than -40.0 kPa (-300 mmHg, -11.81 inHg)] until the throttle drum becomes free from the rod of the throttle opener.
6. Disconnect closed throttle position switch harness connector.







7. Check continuity between closed throttle position switch terminals 6 and 5 under the given conditions.
Resistance measurement must be made with closed throttle position switch installed in vehicle.

Removal and Installation

THROTTLE POSITION SENSOR
Refer to Engine/Diagrams: Outer Component Parts