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Procedure B

  1. CHECK GROUND CONNECTION
    1. Turn ignition switch OFF.
    2. Check ground connection E21, E38. Refer to Ground Inspection in "CIRCUIT INSPECTION ".

    Is the inspection result normal?

    YES: GO TO 2.

    NO: Repair or replace ground connection.

  2. CHECK IPDM E/R POWER SUPPLY CIRCUIT
    1. Disconnect IPDM E/R harness connector E10.
    2. Check the voltage between IPDM E/R harness connector and ground.
      TERMINALS VOLTAGE REFERENCE

      IPDM E/R Ground Voltage
      Connector Terminal
      E10 6 Ground Battery voltage

    Is the inspection result normal?

    YES: GO TO  4.

    NO: GO TO 3.

  3. DETECT MALFUNCTIONING PART

    Check the following.

    • 40A fusible link (letter K)
    • Harness for open or short between IPDM E/R and battery

    Repair open circuit or short to ground or short to power in harness or connectors.

  4. CHECK IPDM E/R GROUND CIRCUIT FOR OPEN ANF SHORT
    1. Disconnect IPDM E/R harness connector E11.
    2. Check the continuity between IPDM E/R harness connector and ground.
      TERMINALS CONTINUITY REFERENCE

      IPDM E/R Ground Continuity
      Connector Terminal
      E11 11 Ground Existed

    Is the inspection result normal?

    YES: GO TO 5.

    NO: Repair open circuit or short to ground or short to power in harness or connectors.

  5. CHECK COOLING FAN MOTORS POWER SUPPLY CIRCUIT-I
    1. Disconnect cooling fan motor-2 harness connector.
    2. Check the voltage between cooling fan motor-2 harness connector and ground.
      TERMINALS VOLTAGE REFERENCE

      Cooling fan motor-2 Ground Voltage
      Connector Terminal
      E54 1 Ground Battery voltage
      2
    3. Also check harness for short to ground or short to power.

    Is the inspection result normal?

    YES: GO TO  7.

    NO: GO TO 6.

  6. DETECT MALFUNCTIONING PART

    Check the following.

    • 40A fusible link (letter M)
    • Harness for open or short between cooling fan motor-2 and battery

    Repair open circuit or short to ground or short to power in harness or connectors.

  7. CHECK COOLING FAN MOTORS POWER SUPPLY CIRCUIT-II
    1. Disconnect cooling fan relay-5.
    2. Turn ignition switch ON.
    3. Check the voltage between cooling fan relay-5 harness connector and ground.
      TERMINALS VOLTAGE REFERENCE

      Cooling fan relay-5 Ground Voltage
      Connector Terminal
      E59 2 Ground Battery voltage
    4. Also check harness for short to ground or short to power.

    Is the inspection result normal?

    YES: GO TO  9.

    NO: GO TO 8.

  8. DETECT MALFUNCTIONING PART

    Check the following.

    • IPDM E/R harness connector E14
    • 15A fuse (No. 63)
    • Harness for open or short between cooling fan relay-5 and fuse

    Repair open circuit or short to ground or short to power in harness or connectors.

  9. CHECK COOLING FAN MOTORS GROUND CIRCUIT FOR OPEN AND SHORT
    1. Turn ignition switch OFF.
    2. Disconnect cooling fan motor-1 harness connector.
    3. Check the continuity between cooling fan motor-1 harness connector and ground.
      TERMINALS CONTINUITY REFERENCE

      Cooling fan motor-1 Ground Continuity
      Connector Terminal
      E53 3 Ground Existed
      4
    4. Check the continuity between cooling fan relay-5 harness connector and ground.
      TERMINALS CONTINUITY REFERENCE

      Cooling fan relay-5 Ground Continuity
      Connector Terminal
      E59 5 Ground Existed
    5. Also check harness for short to ground or short to power.

    Is the inspection result normal?

    YES: GO TO 10.

    NO: Repair open circuit or short to ground or short to power in harness or connectors.

  10. CHECK COOLING FAN MOTORS CIRCUIT FOR OPEN AND SHORT
    1. Disconnect IPDM E/R harness connector E15.
    2. Check the continuity between cooling fan motor-2 harness connector and cooling fan relay-5 harness connector.
      TERMINALS CONTINUITY REFERENCE

      Cooling fan motor-2 Cooling fan relay-5 Continuity
      Connector Terminal Connector Terminal
      E54 4 E59 3 Existed
    3. Check the continuity between cooling fan motor-2 harness connector and IPDM E/R harness connector.
      TERMINALS CONTINUITY REFERENCE

      Cooling fan motor-2 IPDM E/R Continuity
      Connector Terminal Connector Terminal
      E54 3 E10 7 Existed
    4. Check the continuity between cooling fan relay-5 harness connector and IPDM E/R harness connector.
      TERMINALS CONTINUITY REFERENCE

      Cooling fan relay-5 IPDM E/R Continuity
      Connector Terminal Connector Terminal
      E59 1 E15 50 Existed
    5. Check the continuity between cooling fan motor-1 harness connector and IPDM E/R harness connector.
      TERMINALS CONTINUITY REFERENCE

      Cooling fan motor-1 IPDM E/R Continuity
      Connector Terminal Connector Terminal
      E53 1 E10 4 Existed
      2 8
    6. Also check harness for short to ground and short to power.

    Is the inspection result normal?

    YES: GO TO 11.

    NO: Repair open circuit or short to ground or short to power in harness or connectors.

  11. CHECK COOLING FAN RELAY-5

    Refer to "COMPONENT INSPECTION (COOLING FAN RELAY) ".

    Is the inspection result normal?

    YES: GO TO 12.

    NO: Replace cooling fan relay.

  12. CHECK COOLING FAN MOTORS

    Refer to "COMPONENT INSPECTION (COOLING FAN MOTOR) ".

    Is the inspection result normal?

    YES: GO TO 13.

    NO: Replace malfunctioning cooling fan motor.

  13. CHECK INTERMITTENT INCIDENT

    Perform "INTERMITTENT INCIDENT ".

    Is the inspection result normal?

    YES: Replace IPDM E/R.

    NO: Repair or replace harness or connector.

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