Name: AllOEMManuals
Address: 316 Brandywine Ave, Streetman, TX, 75859, US
Telephone: +14699867883
Price range: $$

FAIL-SAFE MODE TROUBLESHOOTING CHART

Mode	Symptom	Possible Cause
[Mode 1] Forced engine shutdown	Engine stop	ETC system can't proceed reliable algorithm procedure Fatal ECM internal programming error Faulty intake system or throttle body
[Mode 2] Forced idle&Power management	Forced idle state controlled by fuel quantity regulation and ignition timing adjustment	ETC system can't control engine power via throttle device Disabled throttle control or broken throttle position information
[Mode 3] Forced idle	No response for accelerator activation Forced idle state	No information about the accelerator position Broken APS 1 and 2, faulty A/D converter or internal controller
[Mode 4] Limit performance&Power management	Engine power is determined by accelerator position and idle power requirement (Limited vehicle running)	ETC system can't securely control engine power
[Mode 5] Limit performance	Engine power varies with accelerator position Driver perceives lack of engine power. MIL ON (Normalvehicle running)	Not reliable accelerator position signal or bad maximum power generation Faulty APS, ignition voltage or internal controller
[Mode 6] Normal	Normal

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.

Safety Warning

Fail-Safe Mode