Description
Steering wheel turning force is heavy or light.
Diagnosis Procedure
1.PERFORM SELF-DIAGNOSIS
With CONSULT
Is any DTC detected?
YES >> Check the DTC. Refer to STC "DTC Index".
NO >> GO TO 2.
2.CHECK THE ILLUMINATION OF THE EPS WARNING LAMP
Check that the EPS warning lamp turns ON when ignition switch turns ON. Then, EPS warning lamp turns OFF after the engine is started.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Perform trouble diagnosis of EPS warning lamp. Refer to STC "Diagnosis Procedure".
3.CHECK EPS CONTROL UNIT SIGNAL (1)
With CONSULT
Does the item in "DATA MONITOR" indicate "100%"?
YES >> GO TO 6.
NO >> GO TO 4.
4.CHECK EPS CONTROL UNIT SIGNAL (2)
With CONSULT
Select "BATTERY VOLT" in "DATA MONITOR" in "EPS".
Does the item in "DATA MONITOR" indicate "10 V" or more?
YES >> GO TO 5.
NO >> Perform trouble diagnosis of EPS control unit power supply and ground. Refer to STC"Diagnosis Procedure".
5.CHECK EPS CONTROL UNIT SIGNAL (3)
With CONSULT
NOTE: While stopping the EPS system, do not turn steering wheel.
Does the symptom continue?
YES >> GO TO 6.
NO >> The assist torque decreases because of protection function. This is not a malfunction. Inspection End.
6.CHECK EPS CONTROL UNIT SIGNAL (4)
With CONSULT
CAUTION: Never drive the vehicle.
Is the inspection result normal?
YES >> GO TO 8.
NO >> GO TO 7.
7.CHECK EPS MOTOR
Perform the trouble diagnosis of EPS motor. Refer to STC "Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 8.
NO >> Repair or replace the malfunctioning component.
8.CHECK STEERING WHEEL TURNING FORCE
Check the steering wheel turning force. Refer to ST"Inspection".
Is the inspection result normal?
YES >> Inspection End
NO >> Check the steering wheel turning force for mechanical malfunction. Refer to ST "Inspection".
Description EPS warning lamp does not turn OFF several seconds after engine started. Diagnosis Procedure 1.PERFORM SELF-DIAGNOSIS With CONSULT Turn the ignition switch OFF to ON. Perform "E ...
Description Unbalance steering wheel turning force and return between right and left. Diagnosis Procedure 1.CHECK THE ILLUMINATION OF THE EPS WARNING LAMP Check the EPS warning lamp while engine ...
Fuel filler cap warning system
FUEL FILLER CAP WARNING SYSTEM : System Diagram
FUEL FILLER CAP WARNING SYSTEM : System Description
INPUT/OUTPUT SIGNAL CHART
Input
Unit/Sensor
Input signal to ECM
ECM function
EVAP control system pressure sensor
Pressure in purge line
Fuel filler cap warning cont ...
U0155 Lost communication (IPC)
DTC Logic
DTC DETECTION LOGIC
DTC
Trouble diagnosis name
DTC detection condition
Possible causes
U0155
Lost Communication With Instrument
Panel Cluster (IPC)
Control Module
When the ignition switch is ON,
TCM is unable to receive the
CAN communications ...