STEP 1. Using scan tool (M.U.T.-IIISE), check evaporative emission system component test item 1 and 2: Bypass Valve.
STEP 2. Measure the power supply voltage at bypass valve harness side connector.
(1) Disconnect the bypass valve connector and measure at the harness side.
(2) Turn on the power supply mode of the electric motor switch.
(3) Measure the voltage between terminal power supply line and ground.- Voltage should be 12V starter battery positive voltage.
(4) Turn off the power supply mode of the electric motor switch.
Is 12V starter battery positive voltage (approximately 12 volts) present?
Go to Step 3. Repair or replace the connector(s), or check and repair the harness of short to ground and open circuit in power supply line between MFI relay connector and bypass valve connector. Then go to Step 8.
STEP 3. Measure the power supply voltage at ECM harness side connector.
(1) Disconnect connector and measure at the harness side.
(2) Turn on the power supply mode of the electric motor switch.
(3) Measure the voltage between terminal VAPR and ground.- Voltage should be 12V starter battery positive voltage.
(4) Turn off the power supply mode of the electric motor switch.
Is 12V starter battery positive voltage (approximately 12 volts) present?
Go to Step 5. Go to Step 4.
STEP 4. Check of short to ground and open circuit in VAPR line between bypass valve connector and ECM connector.
STEP 5. Check of harness damage in VAPR line between bypass valve connector and ECM connector.
STEP 6. Check of harness damage in power supply line between MFI relay connector and bypass valve connector.
STEP 7. Using scan tool (M.U.T.-IIISE), check evaporative emission system component test item 1 and 2: Bypass Valve.
STEP 8. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to Diagnostic Function - OBD-II Drive Cycle - Pattern 1 . (2) Check the diagnostic trouble code (DTC).
Is DTC P1445 set?
Retry the troubleshooting. The inspection is complete.