i-stop WARNING LIGHT (AMBER) FLASHES [SKYACTIV-D]

id1103sc001900

Troubleshooting item

i-stop warning light (amber) flashes
Description
•  i-stop function is inhibited because an i-stop control system error is detected.
Possible cause
i-stop component parts malfunction
•  Detects malfunction in i-stop component part (i-stop related module detects DTC)
―  PCM
―  DC-DC converter
―  Current sensor
―  Battery malfunction (deterioration)
―  Generator malfunction (part, system, control malfunction)
―  DSC HU/CM
―  SAS control module
―  TCM (ATX)
Number of times i-stop function operates exceeds assured operation amount of components
•  Number of times engine restart exceed limit
•  Any of following parts exceeds assured operation amount:
―  Starter relay
―  Starter
System wiring diagram
•  Not applicable
Connector diagram
•  Not applicable

Diagnostic procedure

Step

Inspection

Results

Action
1
VERIFY DTC
•  Perform the DTC inspection for the following modules.
―  PCM
―  DSC HU/CM
―  SAS control module
―  TCM (ATX)
―  Body control module (BCM)
―  Dash-electrical supply unit
•  Are any DTCs displayed?
Yes
Repair the malfunctioning location according to the applicable DTC troubleshooting.
(See DTC TABLE [PCM (SKYACTIV-D)].)
(See DTC TABLE [DSC HU/CM (E)].)
(See DTC TABLE [SAS CONTROL MODULE].)
(See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [TCM (ET6A-EL, ET6AX-EL) (E)].)
(See DTC TABLE [BODY CONTROL MODULE (BCM) (E)].)
(See DTC TABLE [DASH-ELECTRICAL SUPPLY UNIT (E)].)
No
Go to the next step.
2
DETERMINE IF MALFUNCTION CAUSE IS BATTERY VOLTAGE DECREASE OR OTHER
•  Start the engine and warm it up completely.
•  Idle the engine.
•  Access the PCM PID BATT_SOC using the M-MDS.
•  Is the BATT_SOC PID value above 68%?
Yes
Go to Step 4.
No
Recharge the battery, then go to the next step.
(See BATTERY RECHARGING [(E)].)
3
INSPECT BATTERY FOR MALFUNCTION
•  Inspect the applicable part.
•  Is the part normal?
Yes
Go to the next step.
No
Repair or replace the malfunctioning location and perform the repair completion verification 1.
(See BATTERY REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)
4
INSPECT GENERATOR FOR MALFUNCTION
•  Inspect the applicable part.
•  Is the part normal?
Yes
Go to the next step.
No
Repair or replace the malfunctioning location and perform the repair completion verification 1.
(See GENERATOR REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)
5
VERIFY ENGINE SYSTEM MALFUNCTION
•  Perform malfunction diagnosis related to the engine system according to “ACCELERATION MALFUNCTION“.
•  Has the malfunction symptom been eliminated?
Yes
Perform the repair completion verification 1.
No
Go to the next step.
Repair completion verification 1
VERIFY THAT VEHICLE IS REPAIRED
•  Install/connect the part removed/disconnected during the troubleshooting procedure.
•  Has the malfunction symptom been eliminated?
Yes
Complete the symptom troubleshooting. (Explain contents of repair to customer)
No
Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].)
•  If the CAN communication is normal, perform the diagnosis from Step 1.
―  If the malfunction recurs, go to the next step.
Repair completion verification 2
VERIFY IF MALFUNCTION IS CAUSED BY NOT PERFORMING PCM REPROGRAMMING
•  Verify repair information and verify that there is a new calibration in the PCM.
•  Is there a new calibration in the PCM?
Yes
Perform the PCM reprogramming and verify if the malfunction symptom was corrected.
•  If the malfunction recurs, replace the PCM.
No
Replace the PCM.
(See PCM REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)