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victorwclai

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  • Lexus Model
    99 RX300

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  1. I have a 99 RX300 2WD. Curently having problem of VVTi system. Finally, I found that the OCV signal (bank2) output from the ECM E7 pin 18 and 29 gives only noise instead of the 12V pulse signal. I have also checked the OCV (bank 1) and the signal is perfectly a square 12V wave. Is there any way to repair the ECM or should it be replace. Are both bank 1 and 2 OCV share the same signal? For temporary, if I connect the bank 2 OCV together with bank 1 signal, will this damage the ECU?
  2. Hi All, I am living in Hong Kong and just purchase a 2nd hand 1999 Harrier (RX300 in the US). Currently, the engine light lights up and I sent the car to a garage for code scan but not success. I have checked out that the pin 4,7,9,13,14 &16 are in the OBDII connector but pin 5 is missing. What is the protocol? Any special equipment is required. Please help! Victor
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