Description
ECM controls ignition timing and engine idle speed when engine is started with pre-warming up condition.
This control promotes the activation of three way catalyst by heating the catalyst and reduces emissions.
DTC Description
DTC DETECTION LOGIC
DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition |
P050A | COLD START CONTROL (Cold start idle air control system performance) | ECM does not control engine idle speed properly when engine is started with pre-warming up condition. |
P050B | COLD START CONTROL (Cold start ignition timing performance) | ECM does not control ignition timing properly when engine is started with pre-warming up condition. |
P050E | COLD START CONTROL (Cold start engine exhaust temperature too low) | The temperature of the catalyst inlet does not rise to the proper temperature when the engine is started with pre-warming up condition. |
POSSIBLE CAUSE
FAIL-SAFE
P050A
Traveling control mode (Accelerator angle variation control)
P050B, P050E
Not applicable
DTC CONFIRMATION PROCEDURE
1.CHECK DTC PRIORITY
If DTC P050A, P050B or P050E is displayed with other DTC, first perform the trouble diagnosis for other DTC.
Is applicable DTC detected? YES >> Perform diagnosis of applicable. Refer to EC-93, "DTC Index".
NO >> GO TO 2.
2.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 11 V at idle.
>> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE-1
With CONSULT
With GST
Follow the procedure “With CONSULT” above.
Is the value of “COOLAN TEMP/S” between 15°C (59°F) and 36°C (97°F)? YES >> GO TO 4.
NO-1 [If it is below 15°C (59°F)]>>Warm up the engine until the value of “COOLAN TEMP/S” reaches 15°C (59°F) or more. Retry from step 1.
NO-2 [If it is above 36°C (97°F)]>>Cool engine down to less than 36°C (97°F). Retry from step 1.
4.PERFORM DTC CONFIRMATION PROCEDURE-2
With CONSULT
With GST
Follow the procedure “With CONSULT” above.
Is 1st trip DTC detected? YES >> Proceed to EC-357, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
1.CHECK DTC PRIORITY
If DTC P050A, P050B or P050E is displayed with other DTC, first perform the trouble diagnosis for other DTC.
Is applicable DTC detected? YES >> Perform diagnosis of applicable. Refer to EC-93, "DTC Index".
NO >> GO TO 2.
2.PERFORM IDLE AIR VOLUME LEARNING
Perform EC-141, "Work Procedure".
Is Idle Air Volume Learning carried out successfully? YES >> GO TO 3.
NO >> Follow the instruction of Idle Air Volume Learning.
3.CHECK INTAKE SYSTEM
Check for the cause of intake air volume lacking. Refer to the following.
Is the inspection result normal? YES >> GO TO 4.
NO >> Repair or replace malfunctioning part
4.CHECK FUEL INJECTION SYSTEM FUNCTION
Perform DTC Confirmation Procedure for DTC P0171. Refer to EC-260, "DTC Description".
Is the inspection result normal? YES >> GO TO 5.
NO >> Proceed to EC-261, "Diagnosis Procedure" for DTC P0171.
5.PERFORM DTC CONFIRMATION PROCEDURE
See EC-356, "DTC Description".
Is the 1st trip DTC P050A, P050B or P050E displayed again? YES >> Replace ECM. Refer to EC-499, "Removal and Installation".
NO >> INSPECTION END
C1607, C1608 EPS control unit
DTC Logic
DTC DETECTION LOGIC
DTC
Display item
Malfunction detected condition
Possible cause
C1607
EEPROM
When the memory (EEPROM) system malfunction is
detected in EPS control unit.
EPS control unit
C1608
CONTROL UNIT
When the in ...
Component parts
Component Parts Location
No.
Component
Function
1
Key switch
Transmits the key switch signal to the BCM.
Refer to SEC-115, "Component Parts Location" (without Intelligent Key
system) for detailed installation
location.
2
...
System description
COMPONENT PARTS
Component Parts Location
Right rear wheel area
Instrument panel
Engine compartment
Left side of instrument panel (view
with trim panel removed)
No.
Part
Function
1
Optical sensor
Refer to EXL-140, "Optical Senso ...