P1705
Description- 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
TCM TERMINALS AND REFERENCE VALUE
ON BOARD DIAGNOSIS LOGIC
Diagnostic trouble code TP SEN/CIRC A/T with CONSULT-II or P1705 without CONSULT-II is detected when TCM receives an excessively low or high voltage from the sensor.
POSSIBLE CAUSE
Check the following items.
- Harness or connectors
(The sensor circuit is open or shorted.)
- Throttle position sensor
- Throttle position switch
DIAGNOSTIC TROUBLE CODE (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.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch ON and select "DATA MONITOR" mode for "A/T" with CONSULT-II.
2. Apply vacuum to the throttle opener, then check the following. Refer to steps 1 and 2 of "Preparation", "TCM SELF-DIAGNOSTIC PROCEDURE (No Tools)".
If the check result is NG, go to "DIAGNOSTIC PROCEDURE", below.
If the check result is OK, go to following step.
3. Turn ignition switch ON and select "DATA MONITOR" mode for "ENGINE" with CONSULT-II.
4. 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
THRTL POS SEN: Approximately 3 V or less
Selector lever: D position (O/D ON)
If the check result is NG, go to "DIAGNOSTIC PROCEDURE", below.
If the check result is OK, go to following step.
5. 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 (O/D ON)
WITH GST
Follow the procedure "With CONSULT-II".
WIRING DIAGRAM - AT - TPS
Diagnostic Procedure
1: CHECK DTC WITH ECM
2: CHECK INPUT SIGNAL (WITH CONSULT-II)
3: CHECK INPUT SIGNAL (WITHOUT CONSULT-II)
4: CHECK THROTTLE POSITION SWITCH CIRCUIT (WITH CONSULT-II)
5: DETECT MALFUNCTIONING ITEM
6: CHECK THROTTLE POSITION SWITCH CIRCUIT (WITHOUT CONSULT-II)
7: DETECT MALFUNCTIONING ITEM
8: CHECK DTC
9: CHECK TCM INSPECTION