When there is no response from sensor, the SPAS ECU sets this DTC.
Item | Detecting Condition | Possible Cause | ||
DTC Strategy |
•
Signal monitoring | 1. Poor Connection 2. SPAS Sensor | ||
Enable Condition |
•
Intial routine after Ignition On
•
Ignition On, PAS(SPAS) activated | |||
Threshold Value |
•
Sensor no response and wrong checksum.
•
Measured ringing time does not meet specified ring time. | |||
Fail Safe | PAS ON & SPAS ON | PAS-LED | Error Flash | |
SPAS-LED | Off | |||
Speaker | Error Tone | |||
Cluster | System Fail(2s) -> Error PAS HMI Indicator | |||
PAS ON & SPAS OFF | PAS-LED | Error Flash | ||
SPAS-LED | Off | |||
Speaker | Error Tone | |||
Cluster | Error PAS HMI Indicator | |||
Detecting Time |
•
4 cycles | |||
Recovery Time |
•
4 cycles | |||
Recovery Condition |
•
Normal mode | |||
Test Cycle |
•
360 msec. | |||
Overview of the System Environment
The SPAS (Smart Parking Assist System) is part of a customer system providing the PAS and the SPAS functionality to the driver.
The SPAS system is a generic, sophisticated subsystem. Therefore the intention is that every SPAS application shall use this subsystem.
Primary Functions
The system identifies parallel parking slots suitable to back-in the vehicle by analyzing the distance data provided by the SPAS sensors.
When a suitable parking slot has been identified the SPAS system leads the vehicle into the parking slot by operating the steering while the driver operates acceleration pedal, clutch (gearshift) and brake.
During parking manoeuvre, a contact from the wheel to the curb is possible, however the system was designed to reduce the occurance for such case. If this case the driver should drive in the opposite direction to continue the parking manoeuvre.
