NO.6 ENGINE DOES NOT RESTART [SKYACTIV-D 2.2]
id1103a2001100
|
6 |
ENGINE DOES NOT RESTART |
|---|---|
|
DESCRIPTION
|
• The engine does not restart after the engine was stopped by the i-stop control.
|
|
POSSIBLE CAUSE
|
• Engine does not crank when engine restart is initiated
• i-stop (engine stop control) permit conditions are not met due to either of the following causes:
|
i-stop (engine restart control) condition
|
Detection module |
Detection item |
Determination conditions |
PID |
|
|---|---|---|---|---|
|
ATX |
MTX |
|||
|
PCM
|
Vehicle speed
|
1 km/h {0.6 mph} or more
|
4 km/h {2.5 mph} or more
|
WSPD_SEN_LF
|
|
WSPD_SEN_RF
|
||||
|
WSPD_SEN_LR
|
||||
|
WSPD_SEN_RR
|
||||
|
Brake pedal
|
• Brake pedal is released → depressed while in P or N position
|
Not applicable
|
TR
|
|
|
BOO , BPA
|
||||
|
Brake fluid pressure
|
Brake fluid pressure is 0.35 MPa {3.6 kgf/cm2, 51 psi} or less while in D or M position
|
Not applicable
|
TR
|
|
|
BRK_F_P_C
|
||||
|
Accelerator pedal
|
Accelerator pedal is depressed while in D or M position
|
Not applicable
|
TR
|
|
|
APP
|
||||
|
Clutch pedal
|
Not applicable
|
Depressed
|
CPP
|
|
|
Steering torque
|
4 N·m {41 kgf·cm, 35 in·lbf} or more while in D or M position
|
Not applicable
|
STR_TRQ_S_M
|
|
|
Steering angle
|
70° or more from center while in D or M position
(After EPS control module learns center value)
|
Not applicable
|
Not applicable
|
|
|
Shift operation
|
Operated from P or N position to D, M, or R position
|
Not applicable
|
TR
|
|
|
i-stop OFF switch
|
ON
|
←
|
I-Stop_OFF
|
|
|
DC-DC converter (i-ELOOP) output current
|
30 A or more
|
←
|
DCDC_OUT_I
|
|
|
Battery charge condition
|
65.7 % or less
|
←
|
BATT_SOC
|
|
|
Power brake unit vacuum
|
-43 KPa {-0.44 kgf/cm2, -6.2 psi} or more
(value calculated by subtracting BARO from BBP)
|
←
|
BBP
|
|
|
BARO
|
||||
|
Driver not seated
|
• All the following conditions are met:
|
• All the following conditions are met:
|
SEAT_B_D
|
|
|
DOOR_D
|
||||
|
TR
|
||||
|
CPP/PNP
|
||||
|
Engine stop period by i-stop
|
120 s or more
|
←
|
Not applicable
|
|
|
Engine coolant temperature
|
23.5 °C {74.3 °F} or less
|
←
|
ECT
|
|
|
Fuel pressure
|
15 MPa {153 kgf/cm2, 2176 psi} or less
|
←
|
FRP
|
|
|
System condition
|
An i-stop related part DTC is recorded
|
←
|
Not applicable
|
|
|
Start stop unit
|
B+ (ROOM fuse) input
|
No
|
←
|
VPWR_B1
|
|
Remote transmitter authorization
|
When engine restart by remote transmitter authorization is requested
• Any door is open without remote transmitter left in vehicle
• Remote transmitter is outside of vehicle after any door is opened
|
←
|
Not applicable
|
|
|
System condition
|
An i-stop related part DTC is recorded
|
←
|
Not applicable
|
|
|
TCM
|
Gear position
|
In 2nd gear fixed mode
|
Not applicable
|
Not applicable
|
|
TFT
|
20 °C {68 °F} or less, or 117°C {243 °F} or more
|
Not applicable
|
TFT
|
|
|
Vehicle speed
|
3 km/h {2 mph} or more
|
Not applicable
|
WSPD_SEN_LF
|
|
|
WSPD_SEN_RF
|
||||
|
WSPD_SEN_LR
|
||||
|
WSPD_SEN_RR
|
||||
|
System condition
|
An i-stop related part DTC is recorded
|
←
|
Not applicable
|
|
|
Climate control unit
|
A/C request (with full-auto A/C)
|
Yes
|
←
|
STOP_ST
|
|
A/C set temperature (with full-auto A/C)
|
Set to MAX or MIN
|
←
|
Not applicable
|
|
|
MODE dial (with manual A/C)
|
Except DEFROSTER
|
←
|
Not applicable
|
|
|
DEFROSTER switch (with full-auto A/C)
|
OFF
|
←
|
DEF_SW
|
|
|
Front defroster switch
|
ON
|
←
|
Not applicable
|
|
|
System condition
|
An i-stop related part DTC is recorded
|
←
|
Not applicable
|
|
|
DSC HU/CM
|
System condition
|
An i-stop related part DTC is recorded
|
Not applicable
|
Not applicable
|
Diagnostic Procedure
|
Step |
Inspection |
Results |
Action |
|---|---|---|---|
|
1
|
VERIFY ENGINE CRANKING OCCURRENCE
• Start the engine.
• Does the engine start?
|
Yes
|
Go to the next step.
|
|
No
|
Perform symptom troubleshooting according to NO.9 WILL NOT CRANK and NO.12 CRANKS NORMALLY BUT WILL NOT START.
|
||
|
2
|
VERIFY DTCs
• Using the M-MDS, display the DTCs for the PCM, TCM, DSC HU/CM, climate control unit, and start stop unit.
(See START STOP UNIT INSPECTION.)
• Is a DTC displayed?
|
Yes
|
Repair the malfunctioning location according to the applicable DTC troubleshooting.
(See DTC TABLE [SKYACTIV-D 2.2].)
(See DTC TABLE [START STOP UNIT].)
|
|
No
|
Go to the next step.
|
||
|
3
|
VERIFY i-STOP (ENGINE RESTART CONTROL) PERMISSION CONDITION ITEM
• Switch the ignition ON (engine off).
• Display the PID items related to i-stop using the M-MDS.
• Drive the vehicle and perform engine stopping by i-stop.
• Verify if the i-stop (engine restart control) permit conditions of the items which can be verified by the PID are met.
• Are the permit conditions of all the items met?
|
Yes
|
Go to the next step.
|
|
No
|
For the applicable items, inspect the parts under Inspection Item(s).
|
||
|
4
|
VERIFY VEHICLE CONDITIONS RELATED TO i-STOP (ENGINE RESTART CONTROL) PERMISSION CONDITIONS
• Drive the vehicle and perform engine stopping by i-stop.
• Verify that the engine restarts when any of the following conditions is met:
• Does the engine restart?
|
Yes
|
Verify the i-stop (engine restart control) permission conditions, then go to Step 11.
|
|
No
|
Go to the next step.
|
||
|
5
|
INSPECT AMBIENT TEMPERATURE SENSOR FOR MALFUNCTION
• Inspect the ambient temperature sensor.
• Is the ambient temperature sensor normal?
|
Yes
|
Go to the next step.
|
|
No
|
Replace the ambient temperature sensor, then go to Step 11.
|
||
|
6
|
INSPECT EVAPORATOR TEMPERATURE SENSOR FOR MALFUNCTION
• Inspect the evaporator temperature sensor.
• Is the evaporator temperature sensor normal?
|
Yes
|
Vehicles with full-auto A/C
• Go to the next step.
Vehicles with manual A/C
• Go to Step 9.
|
|
No
|
Replace the evaporator sensor, then go to Step 11.
|
||
|
7
|
INSPECT CABIN TEMPERATURE SENSOR FOR MALFUNCTION
• Inspect the cabin temperature sensor.
• Is the cabin temperature sensor normal?
|
Yes
|
Go to the next step.
|
|
No
|
Replace the cabin temperature sensor, then go to Step 11.
|
||
|
8
|
DETERMINE IF MALFUNCTION CAUSED BY BAD AIR MIX ACTUATOR
• Inspect the air mix actuator.
• Is the air mix actuator normal?
|
Yes
|
Inspect the air mix door and linkage for sticking.
• If the steering switch is normal:
• If there is any malfunction:
|
|
No
|
Replace the air mix actuator, then go to Step 11.
|
||
|
9
|
DETERMINE IF MALFUNCTION CAUSED BY BAD AIRFLOW MODE ACTUATOR
• Inspect the airflow mode actuator.
• Is the airflow mode actuator normal?
|
Yes
|
Go to the next step.
|
|
No
|
Replace the airflow mode actuator, then go to Step 11.
|
||
|
10
|
INSPECT EPS CONTROL MODULE FOR MALFUNCTION
• Inspect the EPS control module.
• Is the EPS control module normal?
|
Yes
|
Implement the following procedure, then go to the next step.
1. Switch the ignition off, and after 2 min or more have elapsed, switch the ignition ON.
2. Start the engine and drive the vehicle on a straight road for 10 m {33 ft} or more at a speed of 10 km/h {6.2 mph} or more.
3. Stop the vehicle with the wheels in the straight-ahead position.
|
|
No
|
Replace the EPS control module, then go to the next step.
|
||
|
11
|
VERIFY THAT REPAIRS HAVE BEEN COMPLETED
• Has the malfunction symptom been eliminated?
|
Yes
|
Complete the symptom troubleshooting. Explain repair contents to customer.)
|
|
No
|
Repeat the inspection from Step 1.
|