How to upgrade COROLLA 4A to TOYOTA-27

Why do we need to update COROLLA 4A to TOYOTA-27?
COROLLA 4A supports the programming of 4A proximity keys.
TOYOTA-27 supports programming of proximity key 4A, 8A-A9, 8A-AA …
TOYOTA-27 is the upgraded version of COROLLA 4A.
Compared to COROLLA 4A, TOYOTA-27 has one more power cable.

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Below I will guide you on how to upgrade COROLLA 4A cable to the TOYOTA-27 cable.
Of course you can also directly buy OBDSTAR CAN DIRECT KIT which includes CAN DIRECT cable and TOYOTA-27.

Step 1. Remove the heat shrink tube part as in the picture below from COROLLA 4A.

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Step 2. Break the insulation of the red wiring (power cable) and find the matching DuPont line (female).

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Step 3. Connect the DuPont line (female) to the red wiring point (power cable) as shown below.

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Step 4. Insert the DuPont cable into the NO. 4 hole as in the picture below and protect it with electrical tape to avoid short circuits.

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Done!

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