以支付宝为例，其中的具体步骤如下：
1、直接打开主界面谈仔，点击城市服务进入。
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2、下一步，需要在车主那里选择ETC服务跳转。
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3、如果没问题，就继续点击三秦通的ETC充值。
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4、这个时候，根据实际情况填写相关资料并选择提交信息。
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5、这样一来会提示etc卡网上充值成功，即可达到目的了。
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