P1705
DTC P1705 THROTTLE POSITION SENSORDescription
- Throttle position sensor
The throttle position sensor detects the throttle valve position and sends a signal to the TCM.
- Throttle position switch
Consists of a wide open throttle position switch and a closed throttle position switch.
The wide open throttle position switch sends a signal to the TCM when the throttle valve is open at least 1/2 of the full throttle position. The closed throttle position switch sends a signal to the TCM when the throttle valve is fully closed.
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Remarks: Specification data are reference values.
ON BOARD DIAGNOSIS LOGIC
DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE
CAUTION: Always drive vehicle at a safe speed.
NOTE: If "DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE" has been previously conducted, always turn ignition switch "OFF" and wait at least 5 seconds before conducting the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
With CONSULT-II
1. Apply vacuum to the throttle opener, then check the following. Refer to steps from 1 to 5 of "Preparation" Without Scan Tool
2. Turn ignition switch "ON" and select "DATA MONITOR" mode for "A/T" with CONSULT-II.
3. Check the following.
If the check result is NG, go to "Diagnostic Procedure" below. If the check result is OK, go to following step.
4. Turn ignition switch "ON" and select "DATA MONITOR" mode for "ENGINE" with CONSULT-II.
5. Start engine and maintain the following conditions for at least 3 consecutive seconds. Then release accelerator pedal completely.
VHCL SPEED SE: 10 km/h (6 MPH) or more
HRTL POS SEN: Approximately 3V or less
Selector lever: D position (OD "ON")
If the check result is NG, go to "Diagnostic Procedure" below.
If the check result is OK, go to following step.
6. Maintain the following conditions for at least 3 consecutive seconds. Then release accelerator pedal completely.
VHCL SPEED SE: 10 km/h (6 MPH) or more
Accelerator pedal: Wide open throttle
Selector lever: D position (OD "ON")
With GST
Follow the procedure "With CONSULT-II".
Wiring Diagram-AT-TPS
Diagnostic Procedure
1. CHECK DTC WITH ECM
Perform diagnostic test mode 11 (self-diagnostic results) for engine control.
OK or NG
OK (With CONSULT-II)>>GO TO 2.
OK (Without CONSULT-II)>>GO TO 3.
NG >> Check throttle position sensor circuit for engine control. Throttle Position Sensor
2. CHECK INPUT SIGNAL (WITH CONSULT-II)
With CONSULT-II
1. Apply vacuum to the throttle opener then check the following. Refer to steps 1 through 5 of "TCM Self diagnostic Procedure (No Tools)", "TCM Self-diagnostic Procedure (No Tools)". Without Scan Tool
2. Turn ignition switch to "ON" position. (Do not start engine.)
3. Select "TCM INPUT SIGNALS" in "DATA MONITOR" mode for "A/T" with CONSULT-II.
4. Read out the value of "THRTL POS SEN".
Voltage
Fully-closed throttle: Approximately 0.5V
Fully-open throttle: Approximately 4V
OK or NG
OK >>GO TO 4.
NG >> Check harness for short or open between ECM and TCM regarding throttle position sensor circuit. (Main harness)
3. CHECK INPUT SIGNAL (WITHOUT CONSULT-II)
Without CONSULT-II
1. Apply vacuum to the throttle opener then check the following. Refer to steps 1 through 5 of "TCM Self Diagnostic Procedure (No Tools)" Without Scan Tool
2. Turn ignition switch to "ON" position. (Do not start engine.)
3. Check voltage between TCM terminals 41 and 42 while accelerator pedal is depressed slowly.
Voltage
Fully-closed throttle valve: Approximately 0.5V
Fully-open throttle valve: Approximately 4V
(Voltage rises gradually in response to throttle position)
OK or NG
OK >> GO TO 5.
NG >> Check harness for short or open between ECM and TCM regarding throttle position sensor circuit. (Main harness)
4. CHECK THROTTLE POSITION SWITCH CIRCUIT (WITH CONSULT-II)
With CONSULT-II
1. Apply vacuum to the throttle opener, then check the following. Refer to steps 1 through 5 of "TCM Self diagnostic Procedure (No Tools)" Without Scan Tool
2. Turn ignition switch to "ON" position. (Do not start engine.)
3. Select "TCM INPUT SIGNALS" in "DATA MONITOR" mode for "A/T" with CONSULT-II.
4. Read out "CLOSED THL/SW" and "W/O THRL/P-SW" depressing and releasing accelerator pedal. Check the signal of throttle position switch is indicated properly.
OK or NG
OK >> GO TO 6.
NG >> Check the following items:
- Throttle position switch. Refer to "Component Inspection".
- Harness for short or open between ignition switch and throttle position switch (Main harness)
- Harness for short or open between throttle position switch and TCM (Main harness)
5. CHECK THROTTLE POSITION SWITCH CIRCUIT (WITHOUT CONSULT-II)
Without CONSULT-II
1. Apply vacuum to the throttle opener, then check the following. Refer to steps 1 through 5 of "TCM Self diagnostic Procedure (No Tools)" Without Scan Tool
2. Turn ignition switch to "ON" position. (Do not start engine.)
3. Check voltage between TCM terminals 16, 17 and ground while depressing, and releasing accelerator pedal slowly. (After warming up engine)
OK or NG
OK >> GO TO 6.
NG >> Check the following items:
- Throttle position switch. Refer to "Component Inspection".
- Harness for short or open between ignition switch and throttle position switch (Main harness)
- Harness for short or open between throttle position switch and TCM (Main harness)
6. CHECK DTC
Perform "DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE".
OK or NG
OK >> INSPECTION END
NG >>
1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
Component Inspection
THROTTLE POSITION SWITCH
Closed Throttle Position Switch (Idle position)
- Check continuity between terminals 5 and 6.
Without Scan Tool
- To adjust closed throttle position switch, refer to "DTC P0510 CTP SWITCH" [QG18DE (except Calif. CA Model)] or "DTC P0510 CTP SWITCH" [QG18DE (Calif. CA Model)]. P0510
Wide Open Throttle Position Switch
- Check continuity between terminals 4 and 5.