» » »

Toyota Q&A

Ask Your Question

2000 Toyota Tundra Question: truck does not idle runs at 4500rpms check engine light on

 

Question

dr detroit, 4.7L V8, Dixon, CA, October 20, 2011, 09:19
 Rookie

computer displays code p1127

2 Answers
Flag This
  • Answer #1

    Prestige Auto Works (191 Answers) , Sacramento, CA - (916) 550-9579
    Prestige Auto Works October 20, 2011, 09:41
    Profile_thumbnail
     Journeyman

    Electronic throttle control system actuator power source circuit = P1127. There are a couple possible failures: The ETCS power source circuit open, or Defective ECM (Electronic Control Module). Either way we would recommend diagnostics at a reputable repair shop with a high end scan tool.

    Flag This
  • Reply

    dr detroit, October 24, 2011, 05:14
     Rookie

    thank you for your advice but i have a verus scan tool and also a master tech i was looking for more of a way to trouble shoot this becuase i do not have a repair manual like what are the pin voltages should read at the sensor

    Reply
    Flag This
  • Answer #2

    ccsmog from Contra Costa Smog and Repair, October 20, 2011, 13:59
     Journeyman

    P1127 open circuit detected, check the fuse in left side engine compartment fuse box 15amp ETCS fuse. Your computer stops sending power to the ETS when open cicuit is detected. If the fuse is good, you may want to take it to the dealer and check for service bulletins and warranty.

    Flag This
  • Reply

    dr detroit, October 24, 2011, 05:18
     Rookie

    rhis truck is out of any warranty period i check fuse it is not blown but i have not inspected if fuse has power or not but a trouble tree diagnostic chart would help to narrow down the problem thank you for your help

    Reply
    Flag This