Toyota Camry 2.4, the idle speed is unstable after changing the battery. How to solve it?

After power failure (such as battery replacement) and throttle cleaning, this series of cars may have "u

Toyota Camry 2.4, the idle speed is unstable after changing the battery. How to solve it?

After power failure (such as battery replacement) and throttle cleaning, this series of cars may have "unstable idle speed". Because the memory effect of ECU can not adaptively match the existing value after power failure (adaptive adjustment due to environmental, temperature, emission and other reasons), it needs to be re-matched.

There are various troubleshooting methods, which can generally be solved by "manual adjustment, computer recovery or other recovery methods".

A. For manual operation, it can be recovered by opening the ETCS (or EFI, depending on the vehicle type) fuse that controls the throttle for a period of time, for example, about two or three minutes.

B, you can drive on the road, keep a certain speed, the driving distance is about 5Km, and the computer (ECU) will also learn that the adaptive matching is successful and return to normal.

C, throttle idle control item adjustment and recovery (initialization adaptive matching) special testing equipment.

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Electronic throttle control system (ETCS) is the idling control part of this vehicle, which has the following characteristics:

1, the fuel economy has been effectively improved.

2, reduce emissions and be more environmentally friendly.

3. Provide ECM with signals (throttle opening) required for idle speed control, cruise control, air-fuel ratio, stability, automatic transmission and driving force.