FOREWORD [ESS (EMERGENCY STOP SIGNAL SYSTEM) ]

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Warning
•  Do not attempt to reproduce an emergency stop signal system malfunction. Doing so will result in a remarkable loss of vehicle stability which could cause an unexpected rear-end or other type of collision and a serious accident.
•  To prevent an accident, verify the M-MDS data monitor using two people while the vehicle is being driven (One person drives vehicle and other operates the M-MDS).
•  When performing an asterisked * troubleshooting inspection, first verify the damage and connection status of the connectors and terminals, then perform the inspection while shaking the wiring harness to discover whether poor contact points are the cause of an intermittent malfunction. If there is a malfunction in the connectors or terminals, securely connect, repair, or perform replacement.

No.

Troubleshooting item

Description
1
No.1 ESS (EMERGENCY STOP SIGNAL SYSTEM) DOES NOT OPERATE [ESS (EMERGENCY STOP SIGNAL SYSTEM) ]
•  The hazard warning lights do not flash even though the vehicle decelerates suddenly *1.
•  Hazard warning lights end flashing before vehicle stops (vehicle speed at approx. 10 km/h {6.2 mph}) while the system operates.
2
No.2 ESS (EMERGENCY STOP SIGNAL SYSTEM) OPERATES WHILE NOT UNDER OPERATION CONDITIONS [ESS (EMERGENCY STOP SIGNAL SYSTEM) ]
•  The hazard warning lights flash while driving.
•  Hazard warning lights flash even though deceleration is done without decelerating*1 rapidly.

*1  :Deceleration of vehicle speed at 30 km/h {19 mph} or more for 1 s while vehicle speed is 60—70 km/h {38—43 mph} or more.