Vehicle Moves When Accelerating From Standstill On Slope: Notes

VEHICLE MOVES WHEN ACCELERATING FROM STANDSTILL ON SLOPE (SKYACTIV-G) TROUBLESHOOTING REFERENCE

Troubleshooting item	Vehicle moves when accelerating from standstill on slope
Description	Vehicle slips backwards on inclined road surface when accelerating after i-stop operates.
Possible cause	NOTE: MTX vehicles do not have the Hill Launch Assist function from i-stop because the driver controls the brake pressure. i-stop (engine-stop control) continues operating when shifting the selector lever from D position to N or P position while i-stop (engine-stop control) is operating, however, if the slope of the road surface is within ±4%, the Hill Launch Assist (HLA) function is canceled. Hill launch assist function system (DSC) malfunction False detection of inclination angle (cannot calculate correct road slope) Low-G sensor (built-into SAS control module) malfunction Low-G sensor (built-into SAS control module) initialization malfunction False detection of brake fluid pressure Brake fluid pressure sensor (built-into DSC HU/Control Module) malfunction (without Mazda M Hybrid) Brake fluid pressure sensor (built-into electronically controlled brake unit) malfunction (with Mazda M Hybrid) Cannot maintain brake fluid pressure DSC HU/Control Module malfunction (without Mazda M Hybrid) Electronically controlled brake unit malfunction (with Mazda M Hybrid) DC-DC converter system error (exceeds capacity of DC-DC converter output due to open or short circuit in wiring harness and after-market electrical part) ATX system malfunction Electric AT oil pump malfunction (operation malfunction, insufficient pressure) ATX malfunction
System wiring diagram	Not applicable
Connector diagram	Not applicable

VEHICLE MOVES WHEN ACCELERATING FROM STANDSTILL ON SLOPE - SKYACTIV-G (US) TROUBLESHOOTING REFERENCE

Troubleshooting item	Vehicle moves when accelerating from standstill on slope
Description	Vehicle slips backwards on inclined road surface when accelerating after i-stop operates.
Possible cause	NOTE: MTX vehicles do not have the Hill Launch Assist function from i-stop because the driver controls the brake pressure. i-stop (engine-stop control) continues operating when shifting the selector lever from D position to N or P position while i-stop (engine-stop control) is operating, however, if the slope of the road surface is within ±4%, the Hill Launch Assist (HLA) function is canceled. Hill launch assist function system (DSC) malfunction False detection of inclination angle (cannot calculate correct road slope) Low-G sensor (built-into SAS control module) malfunction Low-G sensor (built-into SAS control module) initialization malfunction False detection of brake fluid pressure Brake fluid pressure sensor (built-into electronically controlled brake unit) malfunction Cannot maintain brake fluid pressure Electronically controlled brake unit malfunction DC-DC converter system error (exceeds capacity of DC-DC converter output due to open or short circuit in wiring harness and after-market electrical part) ATX system malfunction Electric AT oil pump malfunction (operation malfunction, insufficient pressure) ATX malfunction
System wiring diagram	Not applicable
Connector diagram	Not applicable