P1705
DTC P1705 THROTTLE POSITION SENSOR [ACCELERATOR PEDAL POSITION (APP) SENSOR]Description
The throttle position sensor [accelerator pedal position (APP) sensor] is part of the system that controls throttle position. This system also uses an electric throttle control actuator which consists of a throttle control motor and throttle position sensors. Accelerator pedal position signal is sent to the ECM.
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
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 ECM.
Possible Cause
Check the following items.
- Harness or connectors (The sensor circuit is open or shorted.)
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 10 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.
If the check result is NG, go to AT-562, Diagnostic Procedure. If the check result is OK, go to following step.
2. Turn ignition switch ON and select DATA MONITOR mode for ENGINE with CONSULT-II.
3. 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 3V or less
Selector lever: D position (O/D ON)
If the check result is NG, go to AT-562, Diagnostic Procedure.
If the check result is OK, go to following step.
4. 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
AT-TPS-01:
AT-TPS-01
TERMINAL AND REFERENCE VALUE MEASURED BETWEEN EACH TERMINAL AND 25 OR 48 (TCM GROUND)
Diagnostic Procedure
1. CHECK DTC WITH ECM
- Check P code with CONSULT-II ENGINE. Turn ignition switch ON and select SELF DIAGNOSTIC RESULTS mode for ENGINE with CONSULT-II.
Refer to Malfunction Indicator Lamp (MIL).
OK or NG
OK (with CONSULT-II) >> GO TO 2.
OK (without CONSULT-II) >> GO TO 3.
NG >> Check throttle position sensor [accelerator pedal position (APP) sensor] circuit for engine control.
Refer to DTC P0222, P0223 TP SENSOR and DTC P2138 APP SENSOR.
2. CHECK INPUT SIGNAL (WITH CONSULT-II)
With CONSULT-II
1. Turn ignition switch to ON position. (Do not start engine.)
2. Select TCM INPUT SIGNALS in DATA MONITOR mode for A/T with CONSULT-II.
3. Read out the value of THRTL POS SEN
Voltage:
Fully-closed throttle: Approximately 0.5 V
Fully-open throttle: Approximately 4 V
OK or NG
OK >> GO TO 4.
NG >> Check harness for short or open between ECM and TCM regarding throttle position sensor [accelerator pedal position (APP) sensor] circuit. (Main harness)
3. CHECK INPUT SIGNAL (WITHOUT CONSULT-II)
Without CONSULT-II
1. Turn ignition switch to ON position. (Do not start engine.)
2. Check voltage between TCM terminals 41 (GY) and 42 (B/W) 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 4.
NG >> Check harness for short or open between ECM and TCM regarding throttle position sensor [accelerator pedal position (APP) sensor] circuit. (Main harness)
4. CHECK TCM INSPECTION
1. Perform TCM input/output signal inspection. Pinout Values and Diagnostic Parameters
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> INSPECTION END
NG >> Repair or replace damaged parts.