DTC

C1035:11

Electric vacuum pump relay 1: short to ground

DETECTION CONDITION

• Resistance between the EVP control unit terminal C circuit and ground is less than 10 m ohm.

FAIL-SAFE FUNCTION

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

POSSIBLE CAUSE

• Short to ground circuit in electric vacuum pump relay 1 circuit

• 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

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

  (See DTC INSPECTION [EVP CONTROL UNIT].)

• Is the DTC C101C:73 stored?

Yes

Go to the applicable DTC inspection.

(See DTC C101C:73 [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].)

• Is the same DTC present?

Yes

Replace the EVP control unit, then go to Step 7.

(See EVP CONTROL UNIT REMOVAL/INSTALLATION.)

No

Go to the next step.

4

• Switch the ignition ON (engine off).

• Access the following EVP control unit PIDs using the M-MDS:

• VP_MV

• VP_PV

• Access the simulation item VPS_FBK using the M-MDS.

• Verify PID VP_MV and VP_PV when the electric vacuum pump is operated by simulation item VPS_FBK.

• Are VP_MV and VP_PV PIDs within specification?

Specification:

• VP_MV: Below 0.8 V (VPS_FBK On), 4.1—8.7 V (VPS_FBK Off)

• VP_PV: 8.0—17.4 V (VPS_FBK On), 4.1—8.7 V (VPS_FBK Off)

Yes

Go to the next step.

No

Replace the EVP control unit, then go to Step 7.

(See EVP CONTROL UNIT REMOVAL/INSTALLATION.)

5

• Switch the ignition ON (engine off).

• Access the following EVP control unit PIDs using the M-MDS:

• VP_MV

• VP_PV

• VPS_FBK

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

• Are VP_MV and VP_PV PIDs within specification, while the vehicle is driven?

Specification:

• VP_MV: Below 0.8 V (VPS_FBK On), 4.1—8.7 V (VPS_FBK Off)

• VP_PV: 8.0—17.4 V (VPS_FBK On), 4.1—8.7 V (VPS_FBK Off)

Yes

Go to the next step.

No

Replace the EVP control unit, then go to Step 7.

(See EVP CONTROL UNIT REMOVAL/INSTALLATION.)

6

• 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 the next step.

(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.

7

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [EVP CONTROL UNIT].)

No

DTC troubleshooting completed.