Description
ECM supplies a voltage of 5 V to some of the sensors systematically divided into 2 groups, respectively.
Accordingly, when a short circuit develops in a sensor power source, a malfunction may occur simultaneously in the sensors belonging to the same group as the short-circuited sensor.
Sensor power supply 1
NOTE: If sensor power supply 1 circuit is malfunctioning, DTC P0643 is displayed.
Sensor power supply 2
DTC Description
DTC DETECTION LOGIC
DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition |
P0643 | SENSOR POWER/CIRC (Sensor reference voltage ″A″ circuit high) | ECM detects that the voltage of sensor power supply 1 is excessively low or high. |
POSSIBLE CAUSE
FAIL-SAFE
ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx.
5 degrees) by the return spring.
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.
TESTING CONDITION: Before performing the following procedure, confirm that battery voltage is more than 10 V at idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
Is DTC detected? YES >> Refer to EC-380, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
1.CHECK GROUND CONNECTION
Is the inspection result normal? YES >> GO TO 2.
NO >> Repair or replace ground connection.
2.CHECK ACCELERATOR PEDAL POSITION SENSOR 1 POWER SUPPLY CIRCUIT
Is the inspection result normal? YES >> GO TO 5.
NO >> GO TO 3.
3.CHECK SENSOR POWER SUPPLY CIRCUITS
Check harness for short to power and short to ground, between the following terminals.
Is the inspection result normal? YES >> GO TO 4.
NO >> Repair short to ground or short to power in harness or connectors.
4.CHECK COMPONENTS
Check the following.
Is the inspection result normal? YES >> GO TO 5.
NO >> Repair or replace malfunctioning component.
5.CHECK APP SENSOR
Refer to EC-442, "Component Inspection".
Is the inspection result normal? YES >> GO TO 6.
NO >> Replace accelerator pedal assembly. Refer to ACC-3, "Removal and Installation".
6.CHECK INTERMITTENT INCIDENT
Refer to GI-41, "Intermittent Incident".
>> INSPECTION END
Component parts
Component Parts Location
Steering column assembly
No.
Component
Function
1
ABS actuator and electric unit (control unit)
Transmits the following signal to EPS control unit via CAN
communication.
Vehicle speed signal (ABS)
...
Meter buzzer circuit
Description
The buzzer for the warning chime system is installed in the combination
meter.
The combination meter sounds the buzzer based on the signals transmitted
from various units.
Component Function Check
1. CHECK OPERATION OF METER BUZZER
Select "BUZZER" of & ...
Navigation System voice commands
The following voice commands are available for
the Navigation System:
Street Address (address)
Points of Interest (name)
POI by Category
Home
Address Book
Previous Destinations
Enter Address in Steps
Cancel Route
For additional in ...