Toyota Tacoma manuals

Toyota Corolla Repair Manual: Check and replace ecu

Notice

: start an inspection of the connector from the backside of the connector on the wire harness side with the connector connected to the ecu.

When no measurement condition is specified, perform the inspection with the engine stopped and also the ignition switch on.

  1. First check the ecu ground circuit. If it is faulty, repair it.

    If it is normal, the ecu could be faulty. In this case, replace the ecu with one that functions normally and check if the symptoms appear.

  1.  Measure the resistance between the ecu ground terminal and body ground.

    Resistance: 1 Ω or less

  1. Disconnect the ecu connector, check the ground terminals on the ecu side and wire harness side for bends and check the contact pressure.

Terms

Check short circuit
If the wire harness is ground shorted as shown in fig. 5, Locate the section by conducting a resistance check with the body ground in step (b). Check the resistance with the body grou ...

Terms
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Other materials:

Circuit description
The srs warning light is located on the combination meter. When the srs is normal, the srs warning light lights up for approx. 6 Seconds after the ignition switch is turned from the lock position to on position, and then turns off automatically. If there is a malfunction in the srs, the srs ...

When the contact is empty
You can transfer the phone numbers in a Bluetooth phone to the system. Operation methods differ between PBAP (Phone Book Access Profile) compatible and PBAP incompatible Bluetooth phones. If the cellular phone does not support either PBAP or OPP (Object Push Profile) service, you cannot trans ...

Replacing light bulbs
■ Headlight high beams 1 Turn the bulb base counterclockwise. 2 Pull the bulb out while pressing the lock release of the connector. 3 Replace the light bulb, and install the bulb base. Align the 3 tabs on the light bulb with the mounting and insert. 4 Turn and secure the bulb base. ...

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