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.
Do Not Test-Drive With Mil Or D Indicator On (ASN0404-06)
Reference number: ASN0404-06
DO NOT TEST-DRIVE WITH MIL OR D INDICATOR ON
ACURA SERVICE NEWS
| ACURA: | 1997-2003 CL, 2001-04 MDX, 1996-2004 3.5RL, 2002-04 RSX, 1996-2003 3.2TL, 2004 TL and TSX |
| CATEGORY: | Acura Service News |
| APPLIES TO: | 1997-2003 CL, 2001-04 MDX, 1996-2004 3.5RL, 2002-04 RSX, 1996-2003 3.2TL, 2004 TL and TSX |
SERVICE INFORMATION
When the PCM detects a malfunction that turns on the MIL, the D indicator, or both, it can revert to a backup mode or "limp home" mode. This mode differs depending on the A/T design, the cause of the malfunction or DTC, or both.
When you test-drive a vehicle, make sure you clear all A/T DTCs first. You cant evaluate the A/T if the MIL, the D indicator, or both indicators are on.
In backup mode, some A/Ts let you manually shift while others only let you shift to certain gears that apply to its particular backup mode. Here are some common symptoms you get in backup mode:
- Harsh upshifting and downshifting
- Vehicle starts in 2nd gear and then shifts to 4th gear
- Vehicle starts in 2nd gear and then shifts to 3rd gear
When an A/T is in backup mode, customers commonly complain about low power or lousy acceleration because the vehicle starts in 2nd or 4th gear.
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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.