CRUISE CONTROL SYSTEM(except 1ND-TV, 8NR-FTS), Diagnostic DTC:P1607

DTC Code DTC Name
P1607 System State Logical Error Detection

DESCRIPTION

The ECM continuously monitors its main and sub CPUs. This self-check ensures that the ECM is functioning properly. If outputs from the CPUs are different and deviate from the standard, the ECM will illuminate the MIL and store the DTC immediately.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

P1607

System State Logical Error Detection

ECM CPUs malfunction.

ECM

CAUTION / NOTICE / HINT

Tip:

The ECM receives signals from each sensor to control all functions of the cruise control system. When a DTC is detected, the fail-safe function remains on until the engine switch is off.

PROCEDURE

  1. CHECK FOR DTCS (DTC P1607)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Clear the DTCs.

      Click here

      Powertrain > Cruise Control > Clear DTCs

    4. Perform the following to make sure that the DTC detection conditions are met.

      Tip:

      If the detection conditions are not met, the malfunction cannot be detected.

      1. Disconnect the cable from the negative (-) battery terminal and wait for 1 minute.

      2. Connect the cable to the negative (-) battery terminal.

    5. Check for DTCs.

      Click here

      Powertrain > Cruise Control > Trouble Codes

    Result

    Result

    Proceed to

    DTC P1607 is not output

    A

    DTC P1607 is output

    B
    A

    USE SIMULATION METHOD TO CHECK

    Click hereClick hereClick here

    B

    GO TO ECD SYSTEM

    Click hereClick here