Vehicle Speed Is Unstable

Check cruise control actuator cable adjustment. See CRUISE CONTROL ACTUATOR CABLE under ADJUSTMENTS. If cable adjustment is okay, perform the following check procedures in order.

• BRAKE SWITCH CIRCUIT CHECK
• CRUISE CONTROL ACTUATOR CIRCUIT CHECK
• BRAKELIGHT SWITCH CIRCUIT CHECK
• O/D & TCC OFF SIGNAL CIRCUIT
• THROTTLE VALVE OPENING SIGNAL CIRCUIT CHECK
• CRUISE CONTROL ECU CIRCUIT CHECK