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.
Checking Components And Wiring
Check between terminals #1 and #2 in the injector that relates to the diagnostic trouble code (DTC). Check the resistance.
Check the cable that relates to the diagnostic trouble code (DTC). Check for a short-circuit to supply voltage.
Check between:
- Engine control module (ECM) terminal #A1 (#A1) and injector terminal #2 (ECM-200C)
- Engine control module (ECM) terminal #A25 (#A25) and injector terminal #2 (ECM-201C)
- Engine control module (ECM) terminal #A3 (#A3) and injector terminal #2 (ECM-202C)
- Engine control module (ECM) terminal #A2 (#A2) and injector terminal #2 (ECM-203C)
- Engine control module (ECM) terminal #A26 (#A26) and injector terminal #2 (ECM-204C).
Remedy as necessary.
Other information
- see CONNECTING THE BREAKOUT BOX
- see SIGNAL SPECIFICATION
- see COMPONENT SPECIFICATIONS
- see FUEL INJECTOR
- see CONTENTS
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
No obligation. See pricing before you book.