The cruise control amplifier is one of the most important parts of the vehicle's cruise control system. Without this amplifier, there's no way that the cruise control would function properly. When the cruise control amplifier begins to show signs of malfunction, you can actually repair it. To know how, just follow the instructions that are discussed below.
- 2-amp battery charger
- Varnish remover
- Air compressor
- Soldering gun
Step 1: Test the cruise control actuator to know if it's working properly. To this, you must find the actuator inside the engine bay.
Step 2: Using an ammeter and a two-amp battery charger, connect the positive probe to PIN 4 and the negative one to PIN 5. The current should be between 120mA and 160mA. At this point, the cruise control actuator must be creating a spinning sound.
Step 3: If the reading in the cruise control actuator of your vehicle is within the 120mA-160mA range, then you can proceed to repairing the cruise control amplifier. If not, you have to replace the actuator first because it can damage the cruise control amplifier.
Step 4: Using the battery charger, tap the positive probe to PIN 7 while maintaining the ground on PIN 6. If you hear a clicking sound while doing this, then the solenoid in the cruise control actuator is working properly.
Step 5: Check the cruise control amplifier of your vehicle. If it doesn't have black spots (an indication of burning), then there's a good chance that you can still restore it.
Step 6: Using a varnish remover, clean the back part of your vehicle's cruise control amplifier.
Step 7: Dry the cruise control amplifier by using an air compressor.
Step 8: Re-solder the points of the cruise control amplifier using a soldering gun. Never solder for more than 10 seconds because the chips are sensitive to heat.