speedometer and rpm do not work, fuel gauge flactuating, giving p0500 code and DTC code 14, 74

1999 LEXUS RX 300
140,000 MILES
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DANNY1CASTRO
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Already replaced speed sensor at transmision and did not fix problem, how can I troubleshoot the AFT Left abs speed sensor harness. Need a schematic or diagram. I want to troubleshoot the instrument cluster too, need your help.
Jan 29, 2012 at 9:34 PM
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HMAC300
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  • 48,601 POSTS
this can be a few things, a faulty speed sensor, short in the harness a bad ecm or a faulty ip. best to have a pro check this to save you some money.
Jan 29, 2012 at 10:03 PM