ECD SYSTEM, Diagnostic DTC:P081A, P081B

DTC Code DTC Name
P081A Starter Disable Circuit Low
P081B Starter Disable Circuit High

DESCRIPTION


P081A
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Idling for 3 seconds

The starter cut relay circuit shorts to ground for 3 seconds or more.

(1 trip detection logic)


  • Open or short in starter cut relay circuit

  • Starter cut relay

  • ECM

P081B
DTC Detection Drive Pattern DTC Detection Condition Trouble Area
Ignition switch ON for 3 seconds

The starter cut relay circuit opens for 3 seconds or more.

(1 trip detection logic)


  • Open or short in starter cut relay circuit

  • Starter cut relay

  • ECM

WIRING DIAGRAM

Refer to DTC P0617 Click here.

INSPECTION PROCEDURE

Note

After replacing the ECM, the new ECM needs registration Click here and initialization Click here.

PROCEDURE


  1. INSPECT STARTER CUT RELAY


    1. Inspect the starter cut relay Click here.


    NG
    OK
  2. CHECK HARNESS AND CONNECTOR (STARTER CUT RELAY - ECM, BODY GROUND)


    1. Remove the starter cut relay.

    2. Disconnect the ECM connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      Starter cut relay terminal 1 - E38-9 (STCR) Always Below 1 Ω
      Starter cut relay terminal 2- Body ground Always Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      Starter cut relay terminal 1 or E38-9 (STCR) - Body ground Always 10 kΩ or higher
    4. Reinstall the starter cut relay.

    5. Reconnect the ECM connector.


    NG
    OK