Cruise Control Switch

With the Cruise Control Switch (X115) on, voltage from Fuse Fi8 is applied to the Cruise Control ECU (Z121), Cruise Control Lockout Relay (K110) (Except NAS Automatic), Speed Trip Module (Z164) (Except NAS Manual), Clutch Pedal Position Switch (X200) (NAS), and the Steering Wheel Cruise Switches (X266) through the WY wire, Rotary Coupler (Z104) and PB wire. The Cruise Control ECU (Z121) is grounded at terminal 8 through the B wire to E200.

With the Ignition Switch (X134) in position II, battery voltage is applied to the Cruise Control Switch (X115) through the closed switch contacts of the Cruise Control Disable Relay (K234). The Engine Control Module (ECM) (Zi32) applies ground to the coil of the Cruise Control Disable Relay (K234) if an engine fault is detected. The relay energises, opening the switch contacts. The battery supply to the Cruise Control Switch (X115) is interrupted, disabling the Cruise Control System.

With the Cruise Control Switch (X115) on, voltage from Fuse Fi8 is applied to the Cruise Control ECU (Z121), Cruise Control Lockout Relay (K110) (Automatic), Speed Trip Module (Z164) (Manual), and the Steering Wheel Cruise Switches (X266) through the WY wire, Rotary Coupler (Z104) and PB wire. The Cruise Control ECU (Z121) is grounded at terminal 8 through the B wire to E200.