Parking Assist Monitor System Fail-Safe Chart

Body Electrical. Lexus Is250, Is220D. Gse20 Ale20
Park Assist Monitoring. Lexus Is250, Is220D. Gse20 Ale20

Parking Assist Monitor System -- Fail-Safe Chart


If the television camera ECU detects a malfunction, the fail safe functions shown in the table below operate.

Malfunction parts
Detecting condition
Function
"Manual Assist Mode"
Function
"Parallel Parking Assist Mode"
Steering angle sensor
  1. Transmission of sensor malfunction signal
  2. Open circuit in sensor signal
-
Switches to the "Manual Assist Mode" automatically
Transmission of neutral steering point correction incomplete signal.
-
Displays "System initializing"
Communication malfunction between the steering angle sensor and television camera ECU
-
Switches to the "Manual Assist Mode" automatically
Television camera assembly
Transmission of television camera malfunction signal
Stop signal reception and display a dark screen
Television camera ECU
Malfunction of television camera ECU unit
Stops system operation
Navigation ECU
  1. No response from navigation ECU
  2. Transmission of navigation ECU malfunction signal
-
Switches to the "Manual Assist Mode" automatically