Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMERCURY2000SABLE V6-3.0L DOHC VIN SREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSMAIN RELAY (COMPUTER/FUEL SYSTEM)TESTING AND INSPECTION
2000 Mercury Sable V6-3.0L DOHC VIN S
Main Relay (Computer/Fuel System): Testing and Inspection
2000 Mercury Sable V6-3.0L DOHC VIN SSECTION Testing and Inspection
Component Testing Instructions
Component testing procedures are provided to determine whether a component is good or bad.
Testing information for each component includes a schematic with component terminal locations and step-by-step test procedures. Component terminals are identified by letters or numbers that may be marked on the component or callout if there is no mark on the component.
The component connector MUST BE REMOVED before testing. To test a single circuit within the component, select that circuit under the column TO TEST. If you wish to test the complete component, perform all tests.
Connect the tester to the terminals shown in the second column and operate the component in the third column.
COMPONENT TESTING PROCEDURE (voltage applied)
Disconnect the ohmmeter; connect pins 2 and 3 to 12 V DC power and pin 1 to ground. Measure voltage between pin 5 and pin 1. If the voltage is 12 V, continue with the test. If not, replace the relay. Disconnect power from pin 2 and measure voltage between pin 4 and pin 1. If the voltage is 12 V, the relay is okay. It not, replace the relay.
Component testing procedures are provided to determine whether a component is good or bad.
Testing information for each component includes a schematic with component terminal locations and step-by-step test procedures. Component terminals are identified by letters or numbers that may be marked on the component or callout if there is no mark on the component.
The component connector MUST BE REMOVED before testing. To test a single circuit within the component, select that circuit under the column TO TEST. If you wish to test the complete component, perform all tests.
Connect the tester to the terminals shown in the second column and operate the component in the third column.
COMPONENT TESTING PROCEDURE (voltage applied)
Disconnect the ohmmeter; connect pins 2 and 3 to 12 V DC power and pin 1 to ground. Measure voltage between pin 5 and pin 1. If the voltage is 12 V, continue with the test. If not, replace the relay. Disconnect power from pin 2 and measure voltage between pin 4 and pin 1. If the voltage is 12 V, the relay is okay. It not, replace the relay.
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.