NO.4 i-stop FUNCTION DOES NOT OPERATE [SKYACTIV-G 1.5, SKYACTIV-G 2.0]
id1103q7000900
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4 |
i-stop FUNCTION DOES NOT OPERATE |
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DESCRIPTION
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• i-stop function does not operate when vehicle is stopped.
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POSSIBLE CAUSE
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• The i-stop (engine stop control) permit conditions are not met due to either of the following causes:
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i-stop (engine-stop control) permit condition
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Determination module |
Determination item |
Determination condition |
Applicable PID |
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|---|---|---|---|---|
|
AT |
MT |
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PCM
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Vehicle speed
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0 km/h {0 mph}
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3 km/h {2 mph} or less
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WSPD_SEN_LF
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WSPD_SEN_RF
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||||
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WSPD_SEN_LR
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||||
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WSPD_SEN_RR
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||||
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Brake pedal
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Brake pedal is depressed while in D or M position
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Not applicable
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TR
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BPA
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||||
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Brake fluid pressure
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Brake fluid pressure is 1.35 MPa {13.8 kgf/cm2, 196 psi} or more while in D or M position (perform correction according to vehicle inclination angle)
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Not applicable
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TR
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|
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BRK_F_P_C
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||||
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Accelerator pedal
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Released
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←
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APP
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|
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Clutch pedal
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Not applicable
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Released
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CPP
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MT gear position
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Not applicable
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Neutral
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CPP/PNP
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|
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Vehicle conditions
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Vehicle is stopped in D position*1
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Not applicable
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TR
|
|
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Steering speed
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15 deg/s or less
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←
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STR_ROT_SPD
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|
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Steering angle
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Within 65 ° of center to left and right
(After EPS control module learns center value)
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Not applicable
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STR_AB_EST
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Steering torque
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1.1 N·m {11 kgf·cm, 9.7 in·lbf} or less
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←
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STR_TRQ_S_M
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i-stop OFF switch
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OFF
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←
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I-Stop_OFF
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|
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Vehicle speed history
(After engine started and driven once)
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3 km/h {2 mph} or more
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4 km/h {2.5 mph} or more
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I-Stop_VSP
|
|
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i-ELOOP bypass mode operation condition
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Bypass mode is not operated (BYPS_STAT: Bypass Off)
|
←
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BYPS_STAT
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|
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Capacitor (i-ELOOP) voltage
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14 V or more
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←
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DCDC_IN_V
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|
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Battery charge condition
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65.72 % or more
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←
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BATT_SOC
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Battery fluid temperature
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0—70 °C {32—158 °F}
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←
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BATT_TEMP
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Battery voltage
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11.2 V or more
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←
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BATT_V
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|
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Door (driver's side)
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Closed
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←
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DOOR_D
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|
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Bonnet
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Closed*2
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←
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HOOD
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|
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Seat belt (driver's side)
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Fastened*3
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←
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SEAT_B_D
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|
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Power brake unit vacuum
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−49.8 kPa {−0.508 kgf/cm2, −7.22 psi} or less
(value calculated by subtracting BARO from BBP)
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←
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BBP
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|
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BARO
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||||
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Vehicle inclination angle
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Within ±7 ° when level (LON_ACCL_C: within ±0.121 G)
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Not applicable
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LON_ACCL_C
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Battery condition setting
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Completed
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←
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Not applicable
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Steering angle sensor initial setting
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Completed
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Not applicable
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Not applicable
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Engine coolant temperature
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55—110 °C {131—230 °F}
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←
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ECT
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Intake air temperature
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100 °C {212 °F} or less
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←
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IAT
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Altitude
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1,800 m or less (BARO: 81.5 kPa {0.831 kgf/cm2, 11.8 psi} or more)
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←
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Not applicable
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System condition
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i-stop related part DTCs are not recorded
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←
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Not applicable
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|
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PCM
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Retractable fastback
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Retractable fastback is not operated
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←
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Not applicable
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Start stop unit
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B+ (ROOM fuse) input
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Yes
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←
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VPWR_B1
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IG1 input
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Yes
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←
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VPWR_IG1
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|
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ACC input
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Yes
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←
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VPWR_ACC
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IG1 output
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Yes
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←
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RELAY_IG1
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ACC output
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Yes
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←
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RELAY_ACC
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Push button
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Not pressed
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←
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SSB_1
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|
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SSB_2
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||||
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Door (all)
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Closed
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←
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DOOR_ALL
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Trunk
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Closed
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←
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TRUNK
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Seat belt (driver's side)
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Fastened*3
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←
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SEAT_B_D
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Engine start
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Engine was started by operating push button with key inside cabin (engine started first time)
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←
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Not applicable
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Engine rotation speed
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300 rpm or more is maintained after engine started
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←
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Not applicable
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System condition
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i-stop related part DTCs are not recorded
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←
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Not applicable
|
|
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TCM
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TCM detection condition
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All met (I-Stop_EST: On)
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Not applicable
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I-Stop_EST
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Panic stop
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Not during sudden braking
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Not applicable
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Not applicable
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Left/right incline
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-1.56 m/s2―1.56 m/s2
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Not applicable
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Not applicable
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Longitudinal incline
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-2.2 m/s2―2.2 m/s2
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Not applicable
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Not applicable
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|
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Ambient temperature
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-10―90 °C {14—194 °F}*4
|
Not applicable
|
Not applicable
|
|
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TFT
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25―110 °C {77—230 °F}*4
|
Not applicable
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TFT
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|
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Gear position
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1st
|
Not applicable
|
Not applicable
|
|
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System condition
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i-stop related part DTCs are not recorded
|
Not applicable
|
Not applicable
|
|
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Climate control unit
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Cabin temperature (with full-auto air conditioner system)
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Difference between target cabin temperature and actual cabin temperature is a certain value or less
(Cabin temperature control by A/C is normally performed)
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←
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Not applicable
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A/C temperature (with full-auto air conditioner system)
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Setting other than MIN*5
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←
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Not applicable
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Ambient temperature
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−10―50 °C {14—122 °F}
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←
|
Not applicable
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|
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Warm-up operation condition (with manual air conditioner system)
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Ambient temperature is 14 °C {57 °F} or more or engine coolant temperature is 60 °C {140 °F} or more
|
←
|
ECT
|
|
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Cold condition (with manual air conditioner system)
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Ambient temperature is 25 °C {77 °F} (convertible top: opened)/31 °C {88 °F} (convertible top: closed) or less and evaporator temperature is 13 °C {55 °F} or less
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←
|
Not applicable
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|
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MODE dial
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Except DEFROSTER
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←
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Not applicable
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|
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Airflow volume control dial (with full-auto air conditioner system)
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Except MAX setting*6
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←
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Not applicable
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System condition
|
i-stop related part DTCs are not recorded
|
←
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Not applicable
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|
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DSC HU/CM
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Operation request from PCM
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Hill Launch Assist (HLA) control request signal from PCM is received
|
Not applicable
|
Not applicable
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Wheel speed (4 wheels)
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0 km/h {0 mph}
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Not applicable
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WSPD_SEN_LF
|
|
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WSPD_SEN_RF
|
||||
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WSPD_SEN_LR
|
||||
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WSPD_SEN_RR
|
||||
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Brake pedal
|
Brake pedal is depressed
|
Not applicable
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BRAKE_SW
|
|
|
Brake fluid pressure
|
Approx. 0.5 MPa {5 kgf/cm2, 73 psi} or more
|
Not applicable
|
BRK_F_P_C
|
|
|
Accelerator pedal
|
Released
|
Not applicable
|
APP
|
|
|
System condition
|
i-stop related part DTCs are not recorded
|
Not applicable
|
Not applicable
|
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Diagnostic Procedure
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Step |
Inspection |
Results |
Action |
|---|---|---|---|
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1
|
VERIFY DTCs
• Retrieve the PCM, TCM, DSC HU/CM, climate control unit and start stop unit DTCs using the M-MDS.
(See DTC INSPECTION [DSC HU/CM].)
• Is a DTC displayed?
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Yes
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Repair the malfunctioning location according to the applicable DTC troubleshooting.
(See DTC TABLE [DSC HU/CM])
|
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No
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Go to the next step.
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||
|
2
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VERIFY i-stop (ENGINE-STOP CONTROL) PERMIT CONDITION ITEMS
• Switch the ignition ON (engine off).
• Display the PID related to the i-stop (engine-stop control) permit conditions using the M-MDS.
• Drive the vehicle.
• Verify if the i-stop (engine-stop control) permit conditions of the items which can be verified by the PID are met.
• Are the permit conditions of all the items met?
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Yes
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Go to the next step.
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No
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Inspect the applicable items for Inspection item(s).
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3
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VERIFY VEHICLE CONDITION RELATED TO i-stop (ENGINE-STOP CONTROL) PERMIT CONDITION
• Verify if all the following vehicle conditions are met.
• Are all the conditions met?
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Yes
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Go to the next step.
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No
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Verify the i-stop (engine-stop control) permit condition, then go to Step 11.
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4
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PERFORM BATTERY CONDITION INITIAL SETTING (i-stop SETTING)
• Perform the battery condition initial setting (i-stop setting).
• Drive the vehicle to verify the i-stop operation condition.
• Is engine-stopping by i-stop operable?
|
Yes
|
Go to Step 11.
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No
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Go to the next step.
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||
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5
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INSPECT AMBIENT TEMPERATURE SENSOR FOR MALFUNCTION
• Inspect the ambient temperature sensor.
• Is the ambient temperature sensor normal?
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Yes
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Go to the next step.
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No
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Replace the ambient temperature sensor, then go to Step 11.
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6
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INSPECT EVAPORATOR TEMPERATURE SENSOR FOR MALFUNCTION
• Inspect the evaporator temperature sensor.
• Is the evaporator temperature sensor normal?
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Yes
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Vehicles with full-auto air conditioner system:
• Go to the next step.
Vehicles with manual air conditioner system:
• Go to Step 10.
|
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No
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Replace the evaporator temperature sensor, then go to Step 11.
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7
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INSPECT CABIN TEMPERATURE SENSOR FOR MALFUNCTION
• Inspect the cabin temperature sensor.
• Is the cabin temperature sensor normal?
|
Yes
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Go to the next step.
|
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No
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Replace the cabin temperature sensor, then go to Step 11.
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8
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DETERMINE IF MALFUNCTION CAUSED BY AIR MIX ACTUATOR MALFUNCTION
• 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.
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9
|
DETERMINE IF MALFUNCTION CAUSED BY AIRFLOW MODE ACTUATOR MALFUNCTION
• Inspect the airflow mode actuator.
• Is the airflow mode actuator normal?
|
Yes
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Go to the next step.
|
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No
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Replace the airflow mode actuator, then go to Step 11.
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10
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INSPECT EPS CONTROL MODULE FOR MALFUNCTION
• Inspect the EPS control module.
• Is the EPS control module normal?
|
Yes
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Perform the following procedures, then go to the next step.
1. Switch the ignition off and maintain condition for approx. 3 s.
2. Switch the ignition ON (engine off or on).
3. Set the vehicle wheels straight-ahead, then drive the vehicle straight at 20 km/h {12 mph} or more for 5 s or more.
4. Using the M-MDS, verify the STR_ANG_EST operation condition.
|
|
No
|
Replace the EPS control module, then go to the next step.
|
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|
11
|
VERIFY THAT REPAIRS HAVE BEEN COMPLETED
• Has the malfunction symptom been eliminated?
|
Yes
|
Complete the symptom troubleshooting. (Explain contents of repair to customer)
|
|
No
|
Repeat the inspection from Step 1.
|