Description
The accelerator pedal position sensor is installed on the upper end of the accelerator pedal assembly. The sensor detects the accelerator position and sends a signal to the ECM.
Accelerator pedal position sensor has two sensors. These sensors are a kind of potentiometer which transform the accelerator pedal position into output voltage, and emit the voltage signal to the ECM.
In addition, these sensors sends opening and closing speed of the accelerator pedal and feed the voltage signals to the ECM. The ECM judges the current opening angle of the accelerator pedal from these signals and controls the throttle control motor based on these signals.
Idle position of the accelerator pedal is determined by the ECM receiving the signal from the accelerator pedal position sensor. The ECM uses this signal for engine operations such as fuel cut.
DTC Logic
DTC DETECTION LOGIC
NOTE: If DTC P2138 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to EC-394, "DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next test.
TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 8 V at idle.
2.PERFORM DTC CONFIRMATION PROCEDURE
Diagnosis Procedure
1.CHECK GROUND CONNECTION
2.CHECK SENSOR POWER SUPPLY CIRCUIT
3.CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-I
4.CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-II
5.CHECK SENSOR POWER SUPPLY CIRCUIT
Check harness for short to power and short to ground, between the following terminals.
6.CHECK COMPONENTS
Check the following.
7.CHECK APP SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
8.CHECK APP SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
9.CHECK APP SENSOR
10.REPLACE ACCELERATOR PEDAL ASSEMBLY
11.CHECK INTERMITTENT INCIDENT
Component Inspection
1.CHECK ACCELERATOR PEDAL POSITION SENSOR
2.REPLACE ACCELERATOR PEDAL ASSEMBLY
Special Repair Requirement
1.PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNI
2.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
3.PERFORM IDLE AIR VOLUME LEARNING
Precaution
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT
PRE-TENSIONER"
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER",
used along
with a front seat belt, helps to reduce the risk or severity of injury to the
driver ...
Periodic maintenance
IN-CABIN MICROFILTER
Removal and Installation
REMOVAL
Disengage the filter cover tab (1) by pushing up and pull out to
remove the filter cover.
Remove the in-cabin microfilter from the blower unit.
INSTALLATION
Installation is in the reverse order of removal. ...
Combination meter
Removal and Installation
REMOVAL
Disconnect the negative battery terminal. Refer
to PG-67, "Removal and Installation (Battery)".
Remove the cluster lid A. Refer to IP-16,
"Removal and Installation".
Remove the combination meter screws (A) using
powe ...