ECD SYSTEM, Diagnostic DTC:P0215

DTC Code DTC Name
P0215 Open, Short to B+ or Short to GND in Main Relay Circuit

DESCRIPTION

A signal output from the MREL terminal of the ECM causes a current to flow to the coil of the EFI MAIN relay, closing the contact of the EFI MAIN relay and supplying power to +B1, +B2 and +B3 terminals of the ECM.

DTC No. DTC Detection Condition Trouble Area Possible to Detect
Ignition Switch Engine Run
P0215 Open or short in EFI MAIN relay circuit

  • EFI MAIN relay

  • EFI MAIN relay circuit

  • ECM

 ON ON

FAIL-SAFE

DTC No. Fail-safe Opreation Fail-safe Deactivation Condition
P0215 Engine reaction: engine stall -

WIRING DIAGRAM

A0138DXE01

INSPECTION PROCEDURE

Tech Tips


  • If the ECM is replaced, variant coding (variant coding indicates the presence of vehicle accessory items, A/C, etc.) should always be performed Click here.

  • Before removing the ECM and the peripheral parts, wait at least 3 minute after turning the ignition switch off (If the cooling fan is operating, remove the ECM and the peripheral parts after the fan stops.).

PROCEDURE


  1. INSPECT ECM (VOLTAGE)


    1. A0137AHE01

      Disconnect the B54 ECM connector.

    2. Turn the ignition switch to the ON position.

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

      Standard voltage
      Tester Connection Specified Condition
      +B1 (B54-19) - Body ground 11 to 14 V
      +B2 (B54-22) - Body ground 11 to 14 V
      +B3 (B54-23) - Body ground 11 to 14 V

    NG

    CHECK HARNESS AND CONNECTOR (EFI MAIN RELAY - ECM) Click here

    OK

    CHECK FOR INTERMITTENT PROBLEMS

  2. CHECK HARNESS AND CONNECTOR (EFI MAIN RELAY - ECM)


    1. A0136WNE04

      Disconnect the B54 ECM connector.

    2. Remove the engine room R/B.

    3. Remove the engine room R/B lower cover.

    4. Disconnect the 1C engine room R/B connector.

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

      Standard resistance
      Check for open
      Tester Connection Specified Condition
      MREL (B54-14) - Engine room R/B (1C-8) Below 1 Ω
      +B1 (B54-19) - Engine room R/B (1C-5) Below 1 Ω
      +B2 (B54-22) - Engine room R/B (1C-5) Below 1 Ω
      +B3 (B54-23) - Engine room R/B (1C-5) Below 1 Ω
      Check for short
      Tester Connection Specified Condition
      MREL (B54-14) or Engine room R/B (1C-8) - Body ground 10 kΩ or higher
      +B1 (B54-19) or Engine room R/B (1C-5) - Body ground 10 kΩ or higher
      +B2 (B54-22) or Engine room R/B (1C-5) - Body ground 10 kΩ or higher
      +B3 (B54-23) or Engine room R/B (1C-5) - Body ground 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT EFI MAIN RELAY (VOLTAGE)


    1. A0136WEE01

      Remove the engine room R/B.

    2. Remove the engine room R/B lower cover.

    3. Disconnect the 1H engine room R/B connector.

    4. Measure the voltage according to the value(s) in the table below.

      Standard voltage
      Tester Connection Specified Condition
      Engine room R/B (1H-1) - Body ground 11 to 14 V

    NG

    CHECK AND REPAIR HARNESS AND CONNECTOR (BATTERY - ENGINE ROOM R/B)

    OK

  4. REPLACE ENGINE ROOM R/B (EFI MAIN RELAY)


    NEXT

  5. CHECK IF DTC RECURS (P0215)


    1. Connect the intelligent tester to the DLC3.

    2. Clear the DTC Click here.

    3. Turn the ignition switch to the ON position and turn the intelligent tester on.

    4. Select the following menu items: Powertrain / Engine and ECT / DTC.

    5. Read the DTCs displayed on the intelligent tester.

      Result
      Display (DTC output) Proceed to
      No output A
      P0215 B

    B

    REPLACE ECM

    A

    END