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Free to use workshop manual for your 2015+ Mk4 'ND' Mazda MX-5

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DTC C1036:13 [EVP CONTROL UNIT]

DTC	C1036:13	Electric vacuum pump relay 2: stuck OFF
DETECTION CONDITION		EVP control unit terminal E voltage is 1 V or more for a continuous 0.2 s when electric vacuum pump relay 2 is turned on.
FAIL-SAFE FUNCTION		Refer to “Fail-safe function table”. (See DTC TABLE [EVP CONTROL UNIT].)
POSSIBLE CAUSE		Electric vacuum pump relay 2 (built-into EVP control unit) stuck OFF Electric vacuum pump relay 2 drive monitor circuit malfunction EVP control unit malfunction
SYSTEM WIRING DIAGRAM		—

Diagnostic Procedure

Step	Inspection		Action
1	RECORD SNAPSHOT DATA AND DIAGNOSTIC MONITORING TEST RESULTS TO UTILIZE WITH REPEATABILITY VERIFICATION 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	DETERMINE WHETHER MALFUNCTION IS PAST OR PRESENT 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 6. (See EVP CONTROL UNIT REMOVAL/INSTALLATION.)
2		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 1 V?	Yes	Go to the next step.
3		No	Replace the EVP control unit, then go to Step 6. (See EVP CONTROL UNIT REMOVAL/INSTALLATION.)
4	DRIVE VEHICLE THEN VERIFY DTC REPEATABILITY BASED ON SERVICE QUESTIONING RESULTS AND SNAP SHOT 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 snap shot data driving conditions. Verify PID VP_MV when the VPR2_V PID is On. Is the VP_MV PID value 1 V or less?	Yes	Go to the next step.
4		No	Replace the EVP control unit, then go to Step 6. (See EVP CONTROL UNIT REMOVAL/INSTALLATION.)
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. (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.)
5		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].)
6	VERIFY NO DTC IS PRESENT Are any DTCs present?	No	DTC troubleshooting completed.

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