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Home >> Mazda >> 2017 >> CX-5 Grand Select, FWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> On-Board Diagnostic - Engine Control System (1 Of 5) >> DTC P0011-00: P0012-00: Electric Variable Valve Timing Control System >> Troubleshooting Diagnostic Procedure >> Intention of troubleshooting procedure

Intention of troubleshooting procedure

STEP INSPECTION RESULTS ACTION
1 PURPOSE: INSPECT ELECTRIC VARIABLE VALVE TIMING RELAY POWER SUPPLY CIRCUIT FOR SHORT TO GROUND OR OPEN CIRCUIT
  • Switch the ignition off.
  • Remove the electric variable valve timing relay. (See RELAY LOCATION .)
  • Measure the voltage at the electric variable valve timing relay terminal D (wiring harness-side).
  • Is the voltage B+?
Yes Go to the next step.
No Inspect the MAIN 200 A fuse and EVVT 20 A fuse.
  • If the fuse is blown:
    • Refer to the wiring diagram and verify whether or not there is a common connector between battery positive terminal and electric variable valve timing relay terminal D.

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.
    • Repair or replace the malfunctioning part.

If there is no common connector:
  • Repair or replace the wiring harness which has a short to ground.
    • Replace the malfunctioning fuse.
    • If the fuse is damaged:
      • Replace the malfunctioning fuse.
  • If all fuses are normal:
    • Refer to the wiring diagram and verify whether or not there is a common connector between battery positive terminal and electric variable valve timing relay terminal D.

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 an open circuit.
    • Repair or replace the malfunctioning part.

If there is no common connector:
  • Repair or replace the wiring harness which has an open circuit.

Go to Step 12.
2 PURPOSE: INSPECT ELECTRIC VARIABLE VALVE TIMING MOTOR/DRIVER CONNECTOR CONDITION
  • Disconnect the electric variable valve timing motor/driver connector.
  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
  • Is there any malfunction?
Yes Repair or replace the connector and/or terminals, then go to Step 12.
No Go to the next step.
3 PURPOSE: INSPECT ELECTRIC VARIABLE VALVE TIMING RELAY CONTROL CIRCUIT FOR SHORT TO GROUND
  • Electric variable valve timing relay is removed.
  • Verify that the electric variable valve timing motor/driver connector is disconnected.
  • Inspect for continuity between electric variable valve timing relay terminal C (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 the following terminals:
  • Electric variable valve timing relay terminal C-Electric variable valve timing motor/driver terminal 1E
  • Electric variable valve timing relay terminal C-Electric variable valve timing motor/driver terminal 2B

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.
  • Repair or replace the malfunctioning part.

If there is no common connector:
  • Repair or replace the wiring harness which has a short to ground.

Go to Step 12.
No Go to the next step.
4 PURPOSE: INSPECT ELECTRIC VARIABLE VALVE TIMING RELAY CONTROL CIRCUIT FOR OPEN CIRCUIT
  • Electric variable valve timing relay is removed.
  • Verify that the electric variable valve timing motor/driver connector is disconnected.
  • Inspect for continuity between the following terminals (wiring harness-side):
    • Electric variable valve timing relay terminal C-Electric variable valve timing motor/driver terminal 1E
      • Electric variable valve timing relay terminal C-Electric variable valve timing motor/driver terminal 2B
  • Is there continuity?
Yes Go to the next step.
No Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
  • Electric variable valve timing relay terminal C-Electric variable valve timing motor/driver terminal 1E
  • Electric variable valve timing relay terminal C-Electric variable valve timing motor/driver terminal 2B

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 an open circuit.
  • Repair or replace the malfunctioning part.

If there is no common connector:
  • Repair or replace the wiring harness which has an open circuit.

Go to Step 12.
5 PURPOSE: INSPECT PCM CONNECTOR CONDITION
  • Disconnect the PCM connector.
  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
  • Is there any malfunction?
Yes Repair or replace the connector and/or terminals, then go to Step 12.
No Go to the next step.
6 PURPOSE: DETERMINE INTEGRITY OF ELECTRIC VARIABLE VALVE TIMING RELAY
  • Inspect the electric variable valve timing relay. (See RELAY INSPECTION .)
  • Is there any malfunction?
Yes Replace the electric variable valve timing relay, then go to Step 12.
No Go to the next step.
7 PURPOSE: DETERMINE INTEGRITY OF ELECTRIC VARIABLE VALVE TIMING MOTOR Yes Replace the electric variable valve timing motor/driver, then go to Step 12.
(See ELECTRIC VARIABLE VALVE TIMING MOTOR/DRIVER REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
No Go to the next step.
8 PURPOSE: DETERMINE INTEGRITY OF ELECTRIC VARIABLE VALVE TIMING ACTUATOR Yes Replace the electric variable valve timing actuator, then go to Step 12.
(See ELECTRIC VARIABLE VALVE TIMING ACTUATOR, HYDRAULIC VARIABLE VALVE TIMING ACTUATOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
No Go to the next step.
9 PURPOSE: VERIFY ASSEMBLY CONDITION OF TIMING CHAIN Yes Repair or replace the malfunctioning part.
Assemble the timing chain using the correct timing, then go to Step 12.
(See TIMING CHAIN REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
No Go to the next step.
10 PURPOSE: VERIFY IF FOREIGN MATTER ON INTAKE CMP SENSOR DETECTION AREA AFFECTS DIAGNOSTIC RESULTS Yes Remove the foreign matter, then go to Step 12.
No Go to the next step.
11 PURPOSE: VERIFY IF FOREIGN MATTER ON CKP SENSOR DETECTION AREA AFFECTS DIAGNOSTIC RESULTS Yes Remove the foreign matter, then go to the next step.
No Go to the next step.
12 PURPOSE: VERIFICATION OF VEHICLE REPAIR COMPLETION Yes Repeat the inspection from Step 1.
Go to the next step.
No Go to the next step.
13 PURPOSE: VERIFY IF THERE IS ANY OTHER MALFUNCTION
  • Is any other DTC or pending code stored?
Yes Go to the applicable DTC inspection.
(See DTC TABLE [PCM (SKYACTIV-G 2.0, SKYACTIV-G 2.5)] .)
No DTC troubleshooting completed.