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:

ECM Terminals And Reference Value:

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 5 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 5 seconds and then turn "ON".
3. Select "CLSD THL/P SW" in "DATA MONITOR" mode with CONSULT-II.







4. Check "CLSD THL/P SW" signal under the following conditions.
If the check 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 28 (Closed throttle position switch signal) and ground under the following conditions.
3. If NG, go to "Diagnostic Procedure" below.

EC-TP/SW-01:

EC-TP/SW-01 Connector View:

Wiring Diagram

Super Multiple Junction Terminal Arrangements:

Diagnostic Procedure

Steps 1 - 2:

Steps 3 - 6:

Steps 7 - 8:

Component Inspection

CLOSED THROTTLE POSITION SWITCH

With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Stop engine and turn ignition switch "ON".




3. Select "DATA MONITOR" mode with CONSULT-II.




4. Check indication of "CLSD THL/P SW".
Measurement must be made with closed throttle position switch installed in vehicle.

If NG, adjust closed throttle position switch. Refer to "Basic Inspection".

5. If it is impossible to adjust closed throttle position switch in "Basic Inspection", replace closed throttle position switch.

No Tools
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch "OFF".
3. Disconnect closed throttle position switch harness connector.







4. Check continuity between terminals 5 and 6.

Measurement must be made with closed throttle position switch installed in vehicle.

If NG, adjust closed throttle position switch. Refer to "Basic Inspection".

5. It it is impossible to adjust closed throttle position switch in "Basic Inspection", replace closed throttle position switch.