DTC

C101C:71

Electric vacuum pump: stuck

DETECTION CONDITION

• Electric vacuum pump drive circuit electrical current is high for a continuous 3 s when the electric vacuum pump is operated.

FAIL-SAFE FUNCTION

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

POSSIBLE CAUSE

• EVP control unit power supply circuit malfunction

• EVP control unit malfunction

SYSTEM WIRING DIAGRAM

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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

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).

• Access the VP_C PID and simulation item VPS_FBK using the M-MDS.

• Verify PID VP_C when the electric vacuum pump is operated by simulation item VPS_FBK.

• Is the VP_C PID 60 A or more?

Yes

Replace the electric vacuum pump, then go to Step 5.

(See ELECTRIC VACUUM PUMP REMOVAL/INSTALLATION.)

No

Go to the next step.

3

• Switch the ignition ON (engine off).

• Access the VP_C PID and simulation item VPS_FBK using the M-MDS.

• Drive the vehicle based on the service questions content and snap shot data driving conditions.

• Is the VP_C PID 60 A or more, while the vehicle is driven?

Yes

Replace the electric vacuum pump, then go to Step 5.

(See ELECTRIC VACUUM PUMP REMOVAL/INSTALLATION.)

No

Go to the next step.

4

• 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].)

• Is the same DTC present?

Yes

Replace the EVP control unit, then go to Step 6.

(See EVP CONTROL UNIT REMOVAL/INSTALLATION.)

No

DTC troubleshooting completed.

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

5

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

  (See CLEARING DTC [EVP CONTROL UNIT].)

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

  (See DTC INSPECTION [EVP CONTROL UNIT].)

• Is the same DTC present?

Yes

Repeat the inspection from Step1.

If the malfunction recurs, replace the EVP control unit, then go to the next step.

(See EVP CONTROL UNIT REMOVAL/INSTALLATION.)

No

Go to the next step.

6

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [EVP CONTROL UNIT].)

No

DTC troubleshooting completed.