Diesel Data: Automotive Repair

7D Fused J2 to Logic Module


1. With logic module white electrical connector disconnected, connect voltmeter between logic module connector terminal Nos. 7 or 8 and ground.
2. Place ignition switch in the Run position.
3. If voltmeter reading is within 1 volt of battery voltage, replace logic module.
CAUTION: Before replacing the logic module make sure the terminal in cavities 7 and 8 are not crushed so they cannot touch the logic module pins.
4. If voltmeter indicates 0 voltage, check circuit J2 for open circuit and repair as necessary.