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.
Test Procedure - Code Output
Code Output, indications and actions to be taken.
- Code Output [11-1(0)-11]
Both tests indicate a PASS. Action to take:- If engine idles rough or runs rough, Go to D19 - SYSTEM CHECK , step 2). If this symptom is not present; Go to COMPUTED TIMING CHECK .
- If engine is a no start, go to A1 - NO START .
- Code Output [Any Code(s)-1(0)-11]
KOEO tests indicates a FAULT. Action to take:- Go to KOEO service codes. See KOEO SELF-TEST - CIRCUIT TEST & STEP MENU (2.3L) .
- Always start with the first code displayed.
- Code Output [11-1(0)-Exceptions]
Continuous Memory indicates a FAULT. Action to take:- DO NOT service continuous memory codes at this time.
- If engine idles rough or runs rough, go to D19 - SYSTEM CHECK , step 2). If this symptom is not present, go to COMPUTED TIMING CHECK .
- Refer to code output. See KOEO CONTINUOUS MEMORY CODE EXCEPTIONS .
- Code Output [Any Code(s)-1(0)-Any Code(s)]
Both tests indicate a FAULT. Action to take:- DO NOT service CONTINUOUS MEMORY CODES at this time.
- Go to KOEO service codes. See KOEO SELF-TEST - CIRCUIT TEST & STEP MENU (2.3L) .
- Always start with the first code displayed.
- Code Output [11-1(0)-15]
Action to take: Go to D15 - CODE 15 KOEO CONTINUOUS .
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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.
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