System Protect Function

Retractable hard top control unit restricts or inhibits the operation due to safety and system protection reasons, when detecting an operation and activation that are not normal.

Functions	Description
Thermo protect function	When open and close operations of retractable hard top are performed for 3 to 4 times continuously, retractable hard top system restricts the operation judging that hydraulic pump temperature increased.
Pop-up bar malfunction roof protect	When pop-up bar system (air bag diagnosis sensor unit: "SYSTEM DESCRIPTION ") detects deployment, retractable hard top control unit inhibits all of the retractable hard top system functions. When pop-up bar system (air bag diagnosis sensor unit: "SYSTEM DESCRIPTION ") detects a malfunction, retractable hard top control unit inhibits the retractable hard top system open operation.

Thermo Protect Function

Retractable hard top system calculates hydraulic pump temperature according to system operating time, prevents hydraulic system temperature from increasing excessively, and protects the system.

Retractable hard top control unit controls of the following items.

Fig 1: Thermo Protect Function Graph

Courtesy of NISSAN NORTH AMERICA, INC.

Stage		Operation
Stage 1	Between T2 and T3	New retractable hard top cycle is not possible.
Stage 2	Above T3	All retractable hard top operation is not possible.
Stage 2	Bellow T1 (cooling down from T3)	After cooling down, all operations are possible.