DTC

U3000:4B

EVP control unit: high internal temperature

DETECTION CONDITION

• A circuit board temperature inside the EVP control unit of 130 degrees C {266 degrees F} or more is detected.

FAIL-SAFE FUNCTION

• Refer to “Fail-safe function table”. (See DTC TABLE [EVP CONTROL UNIT].)

POSSIBLE CAUSE

• Continuous use of electric vacuum pump under high engine compartment temperature

• Temperature sensor (built-in EVP control unit) malfunction

• EVP control unit malfunction

SYSTEM WIRING DIAGRAM

—

Step

Inspection

Action

1

NOTE:

• Recording can be facilitated using the screen capture function of the PC.

• Record the snapshot data and DIAGNOSTIC MONITORING TEST RESULTS (fuel system related) on the repair order.

—

Go to the next step.

2

• Using the M-MDS, perform the EVP control unit DTC inspection.

  (See DTC INSPECTION [EVP CONTROL UNIT].)

• Is any other DTC or pending code stored?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [EVP CONTROL UNIT].)

No

Go to the next step.

3

NOTE:

• When clearing the DTC, the snap shot data is also cleared at the same time. Snap shot data is recorded if it is not recorded in Step 1.

• Using the M-MDS, clear the DTC from the EVP control unit.

  (See CLEARING DTC [EVP CONTROL UNIT].)

• Switch the ignition ON (engine off).

• Using the M-MDS, perform the EVP control unit DTC inspection.

  (See DTC INSPECTION [EVP CONTROL UNIT].)

• Are any DTCs present?

Yes

DTC U3000:4B is displayed:

• Replace the EVP control unit, then go to the next step.

  (See EVP CONTROL UNIT REMOVAL/INSTALLATION.)

DTC other than U3000:4B is displayed:

• Go to the applicable DTC inspection.

  (See DTC TABLE [EVP CONTROL UNIT].)

No

DTC troubleshooting completed.

Explain to the customer that there are no malfunctions with the vehicle based on the contents of the servicing.

4

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [EVP CONTROL UNIT].)

No

DTC troubleshooting completed.