Diagnostic Procedure
WARNING: This page is about a different variant/trim than selected.
NO. 27 NO CYLINDER DEACTIVATION (SKYACTIV-G 2.5, VIN M) DIAGNOSTIC PROCEDURE
| Step |
Inspection |
Results |
Action |
| 1 |
VERIFY IF CHARACTERISTIC LEARNING IS COMPLETED
- Verify if cylinder deactivation control has not been implemented directly after the following servicing.
- Directly after battery removal
- Directly after PCM configuration
- Does the non-implementation of the cylinder deactivation control apply to the above conditions?
|
Yes |
Explain to the customer that cylinder deactivation control has not been implemented because the characteristic learning is not completed.
Go to Step 7. |
| No |
Go to the next step. |
| 2 |
VERIFY HOW CUSTOMER DRIVES VEHICLE
- Verify if cylinder deactivation control has not been implemented under the following situations.
Driving condition
- Vehicle speed: 5 km/h {3 mph} or less Engine torque is large
- Accelerator pedal depression amount is large
- Accelerator pedal operation is too aggressive
- Large amount of vehicle load Insufficient engine warm-up
- Right after engine start Engine coolant or engine oil temperature is high
- Continuous, high-load driving DSC operation
- During or directly after DSC operation Cylinder deactivation continues for long periods
- Cylinder deactivation condition continues for 5 min or more
NOTE:
- Cylinder deactivation control does not operate for approx. 30 s after cylinder deactivation control is continued for 5 min or more.
- Is there an applicable item for the situation in which cylinder deactivation control is not implemented?
|
Yes |
Explain to the customer that the vehicle is normal and advise the customer how to drive the vehicle appropriately.
Go to Step 7. |
| No |
Go to the next step. |
| 3 |
VERIFY PCM DTC
|
Yes |
Repair the malfunctioning location according to the applicable DTC troubleshooting.
(See DTC TABLE [PCM (SKYACTIV-G 2.5 (VIN M))]
). |
| No |
Go to the next step. |
| 4 |
DETERMINE IF MALFUNCTION CAUSED BY BATTERY BY VERIFYING BATTERY VOLTAGE
|
Yes |
Go to the next step. |
| No |
Go to Step 6. |
| 5 |
INSPECT BATTERY FOR MALFUNCTION
|
Yes |
Go to the next step. |
| No |
Repair or replace the malfunctioning location.
(See BATTERY RECHARGING
).
(See BATTERY REMOVAL/INSTALLATION [SKYACTIV-G 2.5 (VIN M)]
.) Go to Step 7. |
| 6 |
VERIFY REPEATABILITY OF MALFUNCTION SYMPTOM
- Drive the vehicle 3 times under the following conditions.
- Deceleration continues for approx. 6 s with accelerator pedal and brake pedal released while driving at a speed of approx. 60 km/h {37 mph} or more.
- Verify that cylinder deactivation control is implemented on the display screen of the center display.
- Has cylinder deactivation control been implemented?
|
Yes |
Go to the next step. |
| No |
Replace the PCM.
(See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.5 (VIN M)]
).
Go to the next step. |
| 7 |
Verify the test results.
- If normal, return to the diagnostic index to service any additional symptoms. (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.5 (VIN M)] ).
- If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis.
- If the vehicle is repaired, troubleshooting is completed.
- If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest.
|