DTC

C1036:11

Electric vacuum pump relay 2: short to ground

DETECTION CONDITION

• EVP control unit terminal E voltage is less than 1 V for a continuous 0.5 s when electric vacuum pump relay 2 is turned off.

FAIL-SAFE FUNCTION

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

POSSIBLE CAUSE

• Short to ground circuit in wiring harness between electric vacuum pump terminal A and EVP control unit terminal E

• Short to ground circuit in electric vacuum pump relay 2 circuit

• Electric vacuum pump relay 2 (built-into EVP control unit) stuck ON

• EVP control unit malfunction

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

• Switch the ignition OFF.

• Disconnect the negative battery cable.

  (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION)

• Disconnect the electric vacuum pump and EVP control unit connectors.

• Inspect for continuity between electric vacuum pump terminal A (wiring harness-side) and body ground.

• Is there continuity?

Yes

Refer to the wiring diagram and verify whether or not there is a common connector between electric vacuum pump terminal A and EVP control unit terminal E.

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground circuit.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has a short to ground circuit.

Go to Step 7.

No

Go to the next step.

3

• Switch the ignition ON (engine off).

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

• VP_MV

• VPR2_V

• Verify PID VP_MV when the VPR2_V PID is Off.

• Is the VP_MV PID value 1 V or more?

Yes

Go to the next step.

No

Replace the EVP control unit, then go to Step 8.

(See EVP CONTROL UNIT REMOVAL/INSTALLATION.)

4

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 8.

(See EVP CONTROL UNIT REMOVAL/INSTALLATION.)

No

Go to the next step.

5

• Switch the ignition ON (engine off).

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

• VP_MV

• VPR2_V

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

• Verify PID VP_MV when the VPR2_V PID is Off.

• Is the VP_MV PID value 1 V or more?

Yes

Go to the next step.

No

Replace the EVP control unit, then go to Step 8.

(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 Step 8.

(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

• 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.

8

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [EVP CONTROL UNIT].)

No

DTC troubleshooting completed.