SFI SYSTEM, Diagnostic DTC:P0693 and P0694

DTC Code DTC Name
P0693 Fan 2 Control Circuit Low
P0694 Fan 2 Control Circuit High

DESCRIPTION

Refer to DTC P0493.

Click here

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P0693

Fan 2 Control Circuit Low

Open or short in cooling fan control circuit (GMV2 circuit).

  • Cooling fan motor assembly

  • Wire harness or connector

  • Cooling fan ECU

  • ECM

Comes on

DTC stored

P0694

Fan 2 Control Circuit High

Open or short in cooling fan control circuit (GMV2 circuit).

  • Cooling fan motor assembly

  • Wire harness or connector

  • Cooling fan ECU

  • ECM

Comes on

DTC stored

MONITOR DESCRIPTION

These DTCs are stored when a malfunction is detected in the cooling fan control circuit. If there is an open or short in the cooling fan control circuit, the ECM will illuminate the MIL and store a DTC.

WIRING DIAGRAM

A330035E01

CAUTION / NOTICE / HINT

Note:

Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE

  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0693 AND/OR P0694)

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine / Trouble Codes.

    5. Check for DTCs.

      Powertrain > Engine > Trouble Codes

    Result

    Result

    Proceed to

    DTC P0691 and/or P0692 is output

    A

    DTC P0691 and/or P0692 and other DTCs are output

    B
    Tip:

    If DTC P0691 and/or P0692 and P0562 or P0563 are output simultaneously, troubleshoot for DTC P0562 or P0563 first.

    B

    GO TO DTC CHART

    Click here

    A

  2. CHECK TERMINAL VOLTAGE (POWER SOURCE OF COOLING FAN ECU)

    A340582C02

    *a

    Front view of wire harness connector

    (to Cooling Fan ECU)

    1. Disconnect the cooling fan ECU connector.

    2. Turn the ignition switch to ON.

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

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      A47-2 (+) - Body ground

      Ignition switch ON

      11 to 14 V

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)

    OK

  3. CHECK TERMINAL VOLTAGE (COOLING FAN ECU VOLTAGE)

    A340582C04

    *a

    Front view of wire harness connector

    (to Cooling Fan ECU)

    1. Disconnect the cooling fan ECU connector.

    2. Turn the ignition switch to ON.

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

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      A47-3 (GMV2) - Body ground

      Ignition switch ON

      11 to 14 V

    Result

    Proceed to

    OK

    NG
    NG

    CHECK HARNESS AND CONNECTOR (COOLING FAN ECU - ECM)Click here

    OK

  4. INSPECT COOLING FAN ECU

    1. Disconnect the cooling fan ECU connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      2 (+) - 4 (GMV1)

      Always

      0.5 to 1.5 Ω

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE COOLING FAN ECU

    OK

  5. CHECK HARNESS AND CONNECTOR (COOLING FAN ECU - ECM)

    1. Disconnect the cooling fan ECU connector.

    2. Disconnect the ECM connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      A47-1 (GMV) - A35-26 (FANH)

      Always

      Below 1 Ω

      A47-4 (GMV1) - A35-13 (FANH)

      Always

      Below 1 Ω

      A47-1 (GMV) or A35-26 (FANH) - Body ground and other terminals

      Always

      10 kΩ or higher

      A47-4 (GMV1) or A35-13 (FANH) - Body ground and other terminals

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE ECM

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  6. CHECK HARNESS AND CONNECTOR (COOLING FAN ECU - ECM)

    1. Disconnect the cooling fan ECU connector.

    2. Disconnect the ECM connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      A47-3 (GMV2) - A35-12 (FANH)

      Always

      Below 1 Ω

      A47-3 (GMV2) or A35-12 (FANH) - Body ground and other terminals

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE ECM

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR