DTC C1036:12 [EVP CONTROL UNIT]

id040251840100

DTC
C1036:12
Electric vacuum pump relay 2: short to power supply
DETECTION CONDITION
•  EVP control unit terminal E voltage of 2 V or more is detected when the electric vacuum pump is operated.
FAIL-SAFE FUNCTION
•  Refer to “Fail-safe function table”. (See DTC TABLE [EVP CONTROL UNIT].)
POSSIBLE CAUSE
•  Short to power supply circuit in electric vacuum pump relay 2 (built-into EVP control unit) circuit
•  EVP control unit malfunction
SYSTEM WIRING DIAGRAM
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Diagnostic Procedure

Step

Inspection

Action
1
RECORD SNAPSHOT DATA TO UTILIZE WITH REPEATABILITY VERIFICATION
Note
•  Recording can be facilitated using the screen capture function of the PC.
•  Record the snapshot data on the repair order.
—
Go to the next step.
2
DETERMINE WHETHER MALFUNCTION IS PAST OR PRESENT
Note
•  When clearing the DTC, the snapshot data is also cleared at the same time. Snapshot data is recorded if it is not recorded in Step 1.
•  Using the M-MDS, clear the DTC from the EVP control unit.
•  Switch the ignition ON (engine off).
•  Using the M-MDS, perform the EVP control unit DTC inspection.
•  Is the same Pending DTC present?
Yes
Replace the EVP control unit, then go to Step 6.
(See EVP CONTROL UNIT REMOVAL/INSTALLATION [L.H.D.].)
(See EVP CONTROL UNIT REMOVAL/INSTALLATION [R.H.D.].)
No
Go to the next step.
3
VERIFY DTC REPEATABILITY
•  Switch the ignition ON (engine off).
•  Access the following EVP control unit PIDs using the M-MDS:
―  VP_PV
―  VPR2_V
•  Access the simulation item VPS_FBK using the M-MDS.
•  Verify PID VPR2_V and VP_PV when the electric vacuum pump is operated by simulation item VPS_FBK.
•  Is PID VPR2_V on and is VP_MV less than 2 V?
Yes
Go to the next step.
No
Replace the EVP control unit, then go to Step 6.
(See EVP CONTROL UNIT REMOVAL/INSTALLATION [L.H.D.].)
(See EVP CONTROL UNIT REMOVAL/INSTALLATION [R.H.D.].)
4
DRIVE VEHICLE THEN VERIFY DTC REPEATABILITY BASED ON SERVICE QUESTIONING RESULTS AND SNAPSHOT DATA
•  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 snapshot data driving conditions.
•  Verify PID VP_MV when the VPR2_V PID is On.
•  Is the VP_MV PID value 2 V or less?
Yes
Go to the next step.
No
Replace the EVP control unit, then go to Step 6.
(See EVP CONTROL UNIT REMOVAL/INSTALLATION [L.H.D.].)
(See EVP CONTROL UNIT REMOVAL/INSTALLATION [R.H.D.].)
5
VERIFY DTC REPEATABILITY AND DETERMINE IF MALFUNCTION CAUSE IS EVP CONTROL UNIT
•  Using the M-MDS, clear the DTC from the EVP control unit.
•  Switch the ignition ON (engine off).
•  Using the M-MDS, perform the EVP control unit DTC inspection.
•  Is the same Pending DTC present?
Yes
Replace the EVP control unit, then go to the next step.
(See EVP CONTROL UNIT REMOVAL/INSTALLATION [L.H.D.].)
(See EVP CONTROL UNIT REMOVAL/INSTALLATION [R.H.D.].)
No
DTC troubleshooting completed.
Explain to the customer that there are no malfunctions with the vehicle based on the contents of the servicing.
6
VERIFY NO DTC IS PRESENT
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [EVP CONTROL UNIT].)
No
DTC troubleshooting completed.