Edmunds Answers

Answers

  • 0patience 09/29/11 7:47 pm PST

    First make certain that the battery is in good condition and that it is maintaining 12.5+ Volts. Make certain that all battery and ground connections are clean and tight.
    Clear codes, road test and recheck codes.

    The power loss code, if it is active or the most recent, may have tripped other codes, that may lead you on a goose chase.
    Let us know what codes you get after clearing the codes and road testing the vehicle.
    Use the Answer this Question button to reply.
    P1755 TRANSMISSION THROTTLE VALVE CONTROL CIRCUIT
    Possible Causes
    (F856) 5 VOLT SUPPLY CIRCUIT OPEN
    (K314) TTVA MOTOR (+) CIRCUIT OPEN
    (K315) TTVA MOTOR (-) CIRCUIT OPEN
    (K314) TTVA MOTOR (+) CIRCUIT SHORT TO GROUND
    (K315) TTVA MOTOR (-) CIRCUIT SHORT TO GROUND
    (K314) TTVA MOTOR (+) CIRCUIT SHORT TO VOLTAGE
    (K315) TTVA MOTOR (-) CIRCUIT SHORT TO VOLTAGE
    (K314) TTVA MOTOR (+) CIRCUIT SHORT TO ANOTHER CIRCUIT
    (K315) TTVA MOTOR (-) CIRCUIT SHORT TO ANOTHER CIRCUIT
    INTERNAL TRANSMISSION
    TRANSMISSION THROTTLE VALVE ACTUATOR
    ENGINE CONTROL MODULE
    P2146 - BANK 1 (CYLINDERS 1-3) SHORTED HIGH OR LOW
    Check wiring to injectors on cyls 1-3.
    P2149-BANK 2 (CYLINDERS 4-6) SHORTED HIGH OR LOW
    P2509-POWERDOWN DATA LOST ERROR
    POSSIBLE CAUSES
    Poor connections at the batteries
    Low battery voltage
    Open fused B+ to ECM
    Open ground circuit
    Battery + shorted to other circuits
    Return circuit shorted
    Battery + shorted to ground
    Intermittent condition

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